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Discussion & Design of Mechanics for Automatic Bladed Weapons & Exotic Gear
 
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 The Assassin Extension Knife

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SINZA
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PostSubject: The Assassin Extension Knife   October 15th 2008, 2:44 pm

First topic message reminder :

I'm going to start a new post for this new weapon design.
PLEASE KEEP THIS POST ON TOPIC. DISCUSS THIS DESIGN ONLY PLEASE.
We seem to have so many it just gets worse when they are mixed together.

..................................................................................................................

Recieved my 'Assassin's Extending Knife' in the mail today.
It was $135.00 + $10 to have it sharpened.

Description:
The Assassin Extension Knife locks into place with a simple slide.
A release button allows it to slide and retract.
Attaches easily to your Assassin vambrace.
Overall: 19-1/8"
Wt: 1 lb/4 oz
Blade: 9" long, 5/8" wide, 3/16" thick

Buy it here:
http://www.atlantacutlery.com/atlantacutlery/detail.aspx?ID=1946
or
http://www.windlassstudios.com/p-76-assassin-extension-knife.aspx

Here it is out the box...smells like oil.


Closed


Extended


The blade and sleeve.


Close up of the blade. Rounded tip to be a safe prop....it's a easy fix on the belt-sander.


The sleeve and front.


Here's the button lock. Very simple, this is all you really need guys!!



Opened up. Here's what you guys have been waiting for!!!! And it's simple!









How the flex cable is attached to the blade.


How the sleeve is attached to slide plate.


But how does it all work?!?!?! So simple....


It's so basic it's almost embarrassing.
If this is the first of this design I'd love to see really nice version made really strong.
It's great for what it was made for, a costume prop or addition to a collection.
That's why it has a rounded tip. It would be easy to make it a sharp point on the belt sander if you wanted.
I can't see it taking too much abuse before it broke or bent.
As it is it came without the lock spring, so I had to open it up to fix it with one of my springs.
Not a real big deal, but I wasn't happy about it until it was fixed.

It's a little big...but looking at it I really think it could be done without the top half of the 'box'.
If you re-positioned the lock this might be able to be made half thickness. That would make a big difference.

Can it be made automatic? Semi-automatic?

Maybe.
I could see a few different ways of redesigning this, maybe with springs....maybe with a lazy-tong...or both.
The cable and pully extension system is so simple, it's how our curtains used to work as a kid.

Is it worth the money?!?! That is up to you to decide. I know I'm happy I have one!!

O.k......did I cover it all??? Any questions??

Now....on to the redesigns and the project builds!!!!


Last edited by SINZA on November 26th 2009, 2:04 pm; edited 3 times in total
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PostSubject: Re: The Assassin Extension Knife   January 13th 2010, 3:45 pm

Now i have added a locking mechanism that releases the blade if turned, it is attached to a spring so if it is turned by pulling in it with a wire it will reset back to normal if the force on the wire is decreased (very similar to nightsade's mechanism).
Also i have installed a mechanism who locks the blade in place when it is fully extended, it turned out well. The pictures are blurry because i only had my phone's camera available. But, it works like this: there are a hinge with pulled springs placed over it, so it always tries to retract, on the one hinge there is a piece of metal with a bolt attach. So when the blade slides all the way out (the bolt always pushing lightly into the blade) it snaps inside a hole (visible on the picture) and goes through the entire slide and blade and locks it tight in place. This mechanism seems very sturdy and fail-safe, while it hinders the sliding just a little. The downside is that it is much more bulky and "high profiled" that alternative designs.


The locking mechanism in a blurry closeup


The entire blade wived from above. I plan to cut down the lever when i am done with the wire pulling system. All tough it is kid of cool to release it by flexing my arm, but it makes the arm hard to maneuver and it is easy to unlock it by accident.


The blade wived from the side, it is more bulky than it might seem now with all the extending and locking stuff Crying or Very sad


The blade extended on my arm so you get an id of it's size relativistic to something
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Athelstan
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PostSubject: Re: The Assassin Extension Knife   January 13th 2010, 3:54 pm

Looks great, you made it look like the "three-part folding system" from AC. Cool cool :)

Greets, Athelstan
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PostSubject: Re: The Assassin Extension Knife   January 13th 2010, 6:34 pm

Very Happy Thanks quertyui0 Since the blade I am designing was inspired by yours, those pictures you posted really help.

Once again, bravo on your design cheers
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PostSubject: Re: The Assassin Extension Knife   January 13th 2010, 6:52 pm

Looks awesome, man. That thing's got one hell of a reach too. How stable are those articulation points? I don't mean to be a downer, I'm just interested in how all of these designs hold up, and how increasing or decreasing size would affect the functional stability of the whole thing. But congratulations, that's fantastic if it's your first shot at one. Your locking mechanism is also very unique. And I wouldn't worry about the bulk of this ting too much. Now that you've got a working design (which is the hard part IMHO), you've got the leeway to toy around with it until you have everything the way you want it.

At which point you can suitably taunt all those (like me) who have yet to do something productive. Razz Cheers, brother. rocker
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PostSubject: Re: The Assassin Extension Knife   January 13th 2010, 6:56 pm

LordThanatos3 wrote:
Haha I understand completely. The more articulation points you're dealing with in a mechanism, the greater the likelihood something will go wrong. I figure I'll go for a two part slide. Make a nice mounting base for the static rail, and attach the blade to the slider. And that looks like a nice, solid blade to start working with. Any ideas as to how you'll attach the knob?

I'm assuming you'll be using two tension springs like in the above video? Luckily, since it's manual-in, you'll have a wider variety of springs to work with. The force in the push of a finger is enough to overcome the spring's tendencies to contract. Great ideas so far. Simple and effective, much like the same way I plan on making mine (eventually). And go crazy with that lathe! Looks like your cooking up some badassery over there, brother. thumb up


Thanks man, I cut up the slides today, so thats one thing down. About the knob, You know how that one guy has his tension springs attached to a screw and nut? That would be the place I would put the knob, to reload it simply by pulling the springs back.
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PostSubject: Re: The Assassin Extension Knife   January 13th 2010, 9:48 pm

qwertyui0 wrote:
Now i have added a locking mechanism that releases the blade if turned, it is attached to a spring so if it is turned by pulling in it with a wire it will reset back to normal if the force on the wire is decreased (very similar to nightsade's mechanism).
Also i have installed a mechanism who locks the blade in place when it is fully extended, it turned out well. The pictures are blurry because i only had my phone's camera available. But, it works like this: there are a hinge with pulled springs placed over it, so it always tries to retract, on the one hinge there is a piece of metal with a bolt attach. So when the blade slides all the way out (the bolt always pushing lightly into the blade) it snaps inside a hole (visible on the picture) and goes through the entire slide and blade and locks it tight in place. This mechanism seems very sturdy and fail-safe, while it hinders the sliding just a little. The downside is that it is much more bulky and "high profiled" that alternative designs.


The locking mechanism in a blurry closeup


The entire blade wived from above. I plan to cut down the lever when i am done with the wire pulling system. All tough it is kid of cool to release it by flexing my arm, but it makes the arm hard to maneuver and it is easy to unlock it by accident.


The blade wived from the side, it is more bulky than it might seem now with all the extending and locking stuff Crying or Very sad


The blade extended on my arm so you get an id of it's size relativistic to something

yet its really nice!! all u really need
to prevent accident's is a safety
mechanism or 'on and off' switch if u
may. then once its all done. disguise it
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PostSubject: Re: The Assassin Extension Knife   January 14th 2010, 12:48 am

Clyde wrote:
Well depends on how you are like some people like to come up with a design, draw it out then build it, others start with something partiallly working and mod it into a xiphiod. Then I just tinker with a pile of random bolts, slides, and knives.

The method of playing with drawer slides is a good start I'm my oppinion. Just cutting it to be the right size, then figure out a release/locking mechanism or use one from another persons design.
Could you suggest any good, clear designs to start with that I could try to imitate/modify?


Last edited by Skypage on January 14th 2010, 3:22 am; edited 1 time in total (Reason for editing : grammar)
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PostSubject: Re: The Assassin Extension Knife   January 14th 2010, 1:07 am

haha i love the game and the blade, but you people think too much. Arrrggggg
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PostSubject: Re: The Assassin Extension Knife   January 14th 2010, 9:18 am

Thanks for all the praise :)

LordThanatos3 wrote:
Looks awesome, man. That thing's got one hell of a reach too. How stable are those articulation points? I don't mean to be a downer, I'm just interested in how all of these designs hold up, and how increasing or decreasing size would affect the functional stability of the whole thing. But congratulations, that's fantastic if it's your first shot at one. Your locking mechanism is also very unique. And I wouldn't worry about the bulk of this ting too much. Now that you've got a working design (which is the hard part IMHO), you've got the leeway to toy around with it until you have everything the way you want it.

At which point you can suitably taunt all those (like me) who have yet to do something productive. Razz Cheers, brother. rocker

Actually as it is now it is very stable. The drawer slides are naturally strong, so no wiggling there. The entire blade in the middle is made from one whole piece of metal that i carefully filed down so it fits snugly inside of the "rail". It just wiggled around a little. But when i added the wire component, and made sure the wire where very tight around the pulleys it makes sure the blade sits still in the rails (it's primary function being extending the blade).
Then it only wiggled when unextended(the design makes the wire loop a bit shorter when the blade is compacted). The rattling bothered me a little, but now with the locking mechanism always pushing in the blade it does not :)

Originally I only had one spring, it was enough to extend the blade when it where horizontal, but not when pointing upward. Now with two springs and some grease it got enough force to stab trough an apple, and still extend fully so the locking mechanism kicks inn.

I have not tried to stab something hard with the blade, but it seems sturdy. I have dropped it in the ground a couple of times with no damage.

Fun fact: the blade consist of 46 nuts and bolts.
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PostSubject: Re: The Assassin Extension Knife   January 15th 2010, 6:15 pm

hey uhm just a basic suggestion. Im not sure if anyone has suggested manual out back in. Theres a nice Youtube vid about it. It looks pretty realistic. And if you evaluate if from a logical perspective you would want a blade that is more or less always trying to go in as opposed to one that get flicked out. I dont know just my thought. But it seem really easy to do. anyways without further ado here it is. Him using it
http://www.youtube.com/watch?v=ur6bGL91mW0&feature=related and him making it. http://www.youtube.com/watch?v=rr7leAkf1no&feature=channel
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PostSubject: Re: The Assassin Extension Knife   January 15th 2010, 10:01 pm

Skypage wrote:

Could you suggest any good, clear designs to start with that I could try to imitate/modify?

I'd suggest going over and looking at NightShade's work. He's got diagrams, schematics, pictures, etc. up that pretty much detail how to make your own gravity blade. It's entirely gravity-operated, but it's simple and the instructions are detailed enough that you have all the information you need to create one. Also, take a look at most of the railed-based designs around. I personally want to try to incorporate a rail-slide into NightShade's design. Really, the possibilities are endless. Just stay away from lazy tong designs for now! Haha happy building! pirat
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PostSubject: Re: The Assassin Extension Knife   January 16th 2010, 1:39 am

LordThanatos3 wrote:


I'd suggest going over and looking at NightShade's work. He's got diagrams, schematics, pictures, etc. up that pretty much detail how to make your own gravity blade. It's entirely gravity-operated, but it's simple and the instructions are detailed enough that you have all the information you need to create one. Also, take a look at most of the railed-based designs around. I personally want to try to incorporate a rail-slide into NightShade's design. Really, the possibilities are endless. Just stay away from lazy tong designs for now! Haha happy building! pirat
Ironically, I discovered that one earlier today. and am already thinking how I'll be able to start it once I get into my jewelry smithing class again, which has access to a full metal workshop. ^_^
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PostSubject: Re: The Assassin Extension Knife   January 17th 2010, 11:05 pm

Hey guys, i thought i would throw my idea out there since i haven't seen it mentioned yet. I apologize in advance for the crap-tastic drawing

Pic:


The basic idea is a housing(black) that holds the blade(gray) with a lever(green) that extends to the base of your palm.

pressing down on the lever causes it to rotate on a fulcrum, resulting in the first catch (arrow shaped blue) to be pushed down and out of the way of the blade. This should allow the deployment springs(pink-ish) to pull the blade into position i.e. fully extended. The second catch(other blue) would then slip off the top of the blade, where it has been resting, and lock the blade into the deployed position.

To retract the blade, press the lever down again. This will cause the second catch to come up, allowing the blade to be pulled back into the sheath by the retracting spring(yellow). the first catch would the slip back up over the front of the blade, preventing the blade from accidentally deploying.


The biggest problem i see is that one set of springs wouldn't be able to work against the force applied by the other set resulting in a half-deployed/half-retracted stalemate. However, i think this can be solved with a little bit of experimentation on the types and combination of springs used.

if you see any other problems with the design, pleas point them out
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PostSubject: Re: The Assassin Extension Knife   January 19th 2010, 3:52 pm

wow... the ideas have really progressed since i last checked on this topic. im really liking some of these... i actually think i will try oliver84's idea. that is if you are okay with that ollie... ive seen that design before but it never really made any sense to me. study but i get it now! fall as well as the one that qwertyuio made. that one is pretty awesome. idk if i missed it but could you draw up and post some blueprints to show a little better as to how it works? thanks. whip (master) lol anyway untill next time (sorry i know im being a smiley whore XP money shot
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PostSubject: Re: The Assassin Extension Knife   February 2nd 2010, 11:37 pm

WOO HOOO finished! I cant wait 2 get the pics up guys

Mine is less complicated meaning less parts than the other guys, but same function What a Face
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PostSubject: Re: The Assassin Extension Knife   February 3rd 2010, 6:46 am

i iz gona make one any 1 wiv any goog sites
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PostSubject: Re: The Assassin Extension Knife   February 3rd 2010, 6:56 am

NEBNEB09 wrote:
i iz gona make one any 1 wiv any goog sites

If you want to make one then,
reas rhe dorum snd yio wull fund alk teh imfp yu nwwd.


:skep:


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PostSubject: Re: The Assassin Extension Knife   February 3rd 2010, 3:10 pm

Quote :
WOO HOOO finished! I cant wait 2 get the pics up guys


Well 'urry up then Bruv, Chop-Chop! Rolling Eyes Laughing Wink Wink cheers

Bill Sykes
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PostSubject: Re: The Assassin Extension Knife   February 7th 2010, 1:43 am

im actually working on a hidden blade (its my first attempt) its almost finished when it is i will put up picturess ninja 2
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PostSubject: Re: The Assassin Extension Knife   February 17th 2010, 4:02 pm

As you probably can see on the AC Diaries Vid, the blade has sth round on the bottom, turning when the blade moves. It seems, that I've been right. It may use a clock type of spring, which keeps turning something around till the energy runs out... I plan to make the double action one with this type of spring used.
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PostSubject: Re: The Assassin Extension Knife   February 17th 2010, 11:40 pm

beverx wrote:
As you probably can see on the AC Diaries Vid, the blade has sth round on the bottom, turning when the blade moves. It seems, that I've been right. It may use a clock type of spring, which keeps turning something around till the energy runs out... I plan to make the double action one with this type of spring used.

Yeah, dont you mean Lineage? And I highly doubt a design like that would work very well, its all movie magic, the people on here are trying to design our own ways.
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PostSubject: Re: The Assassin Extension Knife   February 17th 2010, 11:43 pm

Sorry guys, may camera is being a little disfunctional
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PostSubject: Re: The Assassin Extension Knife   February 27th 2010, 2:17 am

qwertyui0 wrote:
Hi! I am new to the forum, even though I have been reading around on it for a wile. But, this is first post, yay! Very Happy

I have tried to make an "Assassins Creed like" blade,
like this in the thread.
Mine use rails from drawers for stability improving and to ease the construction, the price is the increased size.
I have yet to add springs and release trigger. It is going to be automatic-out, manual-inn. At full extension it reaches 4cm past my middle finger.
The "too be blade" is 8 cm to long, it does not extend that far, the furthest away black spot marks where the blade intend to end. (it is hard to see)
What i am happy about is how sturdy it turned out, it nearly does not wiggle around at all! What i am unhappy about is how hard it is to pull inn/out; it is going to need unnecessary powerful springs. (I got them though, just havent got the time to mount them yet.)
I figured to post it here, though it is probably a bit late seeing how much of it is already done. (for advice on building it, that is)

Edit: After getting all the bumps and greasing it up. It slides well enough that it may be pulled out by gravity :)



Closed length: 24cm
Fully extended: 49cm





hey i was just wondering if i could get a parts list for this
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PostSubject: Re: The Assassin Extension Knife   February 28th 2010, 8:34 am

can someone give me instructions to make an assassin hidden blade Im kinda new to weapon making
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PostSubject: Re: The Assassin Extension Knife   February 28th 2010, 4:19 pm

we have said it many times before, we are not going to just hand it to you. If you read what we have suggested then you should be capable of making these things
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PostSubject: Re: The Assassin Extension Knife   March 3rd 2010, 5:36 pm

I have been thinking about this concept for a while. The ring and cable idea as a release mechanism seems a bit problematic, as has been discussed. It makes it a bit difficult to have any hand movement without setting it off accidentally. I think possibly using a lever as a release would be more realistic. I was reminded of a toy i had as a kid that used the same motion: The Spiderman web shooter! deadpool
...anyway, the lever would run all the way through the blade housing, and a catch would hold the blade under tension, with whatever automatic propellant you wish (spring, scissor jack, whatever). When pressure was put on the lever, the blade would release. Another catch would be further up on the lever, so when pressure would be let off, it would lock the blade in place. If you wish, a cable could draw the blade back into the housing, but it wouldn't inhibit your movement. Anyway, ill try to post a concept drawing soon. What do you think?
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Hoax44
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PostSubject: Re: The Assassin Extension Knife   March 3rd 2010, 8:07 pm

having some minor difficulty even trying to unlock the thing!
I've pricked all of my fingers xD
I must sound like a tard, but it's killing me
!
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LordThanatos3
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PostSubject: Re: The Assassin Extension Knife   March 3rd 2010, 8:19 pm

Kheldar wrote:
I have been thinking about this concept for a while. The ring and cable idea as a release mechanism seems a bit problematic, as has been discussed. It makes it a bit difficult to have any hand movement without setting it off accidentally. I think possibly using a lever as a release would be more realistic. I was reminded of a toy i had as a kid that used the same motion: The Spiderman web shooter! deadpool
...anyway, the lever would run all the way through the blade housing, and a catch would hold the blade under tension, with whatever automatic propellant you wish (spring, scissor jack, whatever). When pressure was put on the lever, the blade would release. Another catch would be further up on the lever, so when pressure would be let off, it would lock the blade in place. If you wish, a cable could draw the blade back into the housing, but it wouldn't inhibit your movement. Anyway, ill try to post a concept drawing soon. What do you think?

Check out the "DA-OTF Switchblade Designed Wrist Blade" thread on this site. Teenageher0 made a DA-OTF out of PVC, and added a solid metal lever to activate the switch. I know this isn't exactly what you're talking about, but it's similar. I know people on the thread commented on how the solid link between the hand and the housing limits mobility a bit, but it makes it fully automatic. So if you can adopt the lever idea to a DA-OTF, you wouldn't even have to worry about having separate mechanisms for deploying and withdrawing the blade.

I hope that made sense. I just got excited that I could contribute and started typing. But regardless of what you do with this, you have my thanks for bringing up fond memories of the Spider-Man web shooter. jumping
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PostSubject: Re: The Assassin Extension Knife   March 17th 2010, 7:31 pm

this has been getting annoying. i havnt had ANY time to work on my new designs... i also have been lacking the money to get the parts i still need. i have a box of parts that i believe could be used to make a single action blade and i still have the goal to make the double action blade for myself... no time... no parts.... Mad
im going crazy here Arrrggggg
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IXNAY
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PostSubject: Re: The Assassin Extension Knife   March 22nd 2010, 12:52 pm

hi every one im from mexico so my inglish is not so well but ill try to meake understandable
so im creating a prototipe of slicing blade wit automatic sistem taken froma previous post i saw here so i hope to help you .it is has ben made in 3D in autocad so i hope to put a video on youtube son explaining everi pice and giving you a list of materials and proces.well tenx all for sharing all the grat ideas.
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PostSubject: Re: The Assassin Extension Knife   March 31st 2010, 11:58 am

Ive been trying to make an assassins creed hidden-blade, im making a prototype, im using a desk slider, and does anyone know how i could make it into a hidden-blade, i could put a pic of it on here.
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PostSubject: Re: The Assassin Extension Knife   March 31st 2010, 1:04 pm

Search the New member Quick links menu on the home page you will find it useful Wink

Welcome Aboard Btw Very Happy

Bill Sykes
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PostSubject: Re: The Assassin Extension Knife   April 12th 2010, 8:37 pm

New to the site, i was thinking what if you simply hand a second string (Short) that you pull on to raise the blade?
It would take about a second,then its ready for realease again
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PostSubject: Re: The Assassin Extension Knife   April 13th 2010, 8:59 am

Well, i mean i want to make one but, i dont know if they have any blueprints of one here.
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PostSubject: Re: The Assassin Extension Knife   April 15th 2010, 10:25 am

@maninthewhitehood

There are some rough blueprints on here, but that's exactly what they are: rough. A lot don't have materials lists and are mostly ideas scribbled down. So while there are a lot of ideas to build on, there's not really any streamlined process that will hold your hand as you make one. Your best bet might be trial and error, or to wait, read over everything, and try to come up with your own ideas that will fit your budget. So I'd say get to reading! study cheers
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maninthewhitehood
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PostSubject: Hiddenblade   April 15th 2010, 11:27 am

I tried to make something but, im gonna use a drawer slider, those have three sleeve-like slides, i dont what length to get, i was thinking a twelve inch one, the idea i got my blade was from abonude.
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PostSubject: Re: The Assassin Extension Knife   April 19th 2010, 3:12 am

Ok, Ive been here for a day or two, and I will admit I haven't read every single Assassin's creed replica thread, and every post. I cant help but post before I finish them all. Ive seen dozens of threads asking about this weapon, and everyone trying to think of a way to make this work... And I don't see the complexity to it. And so I'm just dying to ask why what I think would work, wouldn't (I know, I know Sinza, dont ask, go build and find out yourself... But I dont wanna start with a DA OTF Assassin blade confused ) . I played the game, thought about the blade, came up with a answer, an left it to that. It might simply be because I don't know enough, I can think of a more simple answer, or the exact opposite, I'm just not seeing the problem.


Anyways, what you guys want is a DA OTF blade attached to your arm that you activate with a ring finger pully, right?

Then I'd propose doing just that, with no additional complicated design behind it. Get a DA OTF (Buy or make), Attach a string to the switch, add a ring, and your done, right? No, I know, wrong. Thats not DA. So add a spring to the back of the switch, pulling down on it. Flex hand (Pulling against spring weight), pulls switch, theres your knife. Relax, spring pulls switch back, bye bye blade. The end, yes? As far as I can tell, you guys seem to be making it too complicated, or trying to re-create what is already there.

This is obviously the Ezio version, which doesn't require a removed finger. Alt'air version, which allows the closed fist around the blade, which obviously would work slightly different... Well, I guess Ill need to spend more then the, roughly, 30 seconds Ive put into thought on this. But for practical use (HA!) What Ive suggested seems like it would work perfectly fine. Less complicated, and using whats already been created seems logical to me. I'm open to getting yelled at for not reading everything, lol. And I apologize if this has been suggested already.
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Beefy mongoose
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PostSubject: Re: The Assassin Extension Knife   April 19th 2010, 3:26 am

well z1411 that idea has been proposed about 4 time, but no one has built it.

One reason why there are all of these complicated designs is because most people want to make it so that the blade will lock out and will stay out if you relax your hand.
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PostSubject: Re: The Assassin Extension Knife   April 19th 2010, 3:37 am

Well shit. Go figure its the "remove your finger" design you guys are after. Ok. So I.... Hmmm.... Uh. Hm. Arrrggggg

And now I am enticed. study Give me few minutes, lol. scratch


(You saying nobody has built it makes me wanna build it... But Ill have to learn to build a DA OTF first (which I saw there is a thread on). Gah!)
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PostSubject: Re: The Assassin Extension Knife   April 20th 2010, 10:59 am

Oh another simple idea, if you are not wanting your ring finger gone, drill a ring finger sized hole so you can put your ring finger into and it will look like it does off the game.Very Happy
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PostSubject: Re: The Assassin Extension Knife   April 22nd 2010, 12:25 am

um were do you guys get this stuff?
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Beefy mongoose
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PostSubject: Re: The Assassin Extension Knife   April 22nd 2010, 1:09 am

And by stuff you mean?

Most of it is just at standard hardware stores. Some specialty things like assorted spring kits may be online.
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PostSubject: Re: The Assassin Extension Knife   May 1st 2010, 2:35 am

the way i made the blade as a starter is a gravity version that is basically a otf with a lock blade type catch in the front and back that has held up pretty well on the test dummies but I will post a schematic and vid asap so yall can c wat u think but this is my first model I am tryin a wheel type spring and a pully system next its startin 2 b interestin but major flaws with the spiral spring. ne ideas 2 counter the pull of it so I can make an auto extend?
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PostSubject: Re: The Assassin Extension Knife   May 13th 2010, 5:36 am

ok my first post yay
why not makea sort of spiral spring that goes up so far and leaves the momentom of the blade to lock it self in place in a sort of clip lock and to bring it back in have wire springs coil when you sind it out so that it will spin back in to place when you hit a metal clip right at the botom of your palm
ps i hope you like
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PostSubject: Different blade idea   May 19th 2010, 12:01 am

I have a different idea. It wouldn't be as unnoticeable or as true to the game but couldn't the blade be attached to a pulley that was moved using a flat bar gripped in the palm of the hand? It seems to me that it would be the simplest way to do it and could be retracted easily without using springs. Also it would make sense due to the hand movement Ezio makes opening the blade. The major problem I see with it is that it wouldn't be able to lock very well.
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PostSubject: Re: The Assassin Extension Knife   May 25th 2010, 6:09 am

So i read every single post here, and its been quite a long time. I watched countless clips on the games, the movie of Giovanni. (Cant remember the name, yet i just watched it)

So i read the countless ideas, and put em together with the other knowledge.

How do you get a spring like contraption that will not only go out, but lock out as well? A blade that can be far enough off your wrist to keep your fingers, but still strong enough to impale someone?

So here are my thoughts. Judge me harshly, the only mechanic knowledge I have was learnt reading you guys.

A button system. You have your wrist blade mounted in its case as the replica is, only slimmed down. Now on the inside, where you lay it against your wrist, have a button that you press against with your wrist. I know it sounds difficult, but it also sounds simple too. This is for the Ezio's blade, not Altair's.

With the slight bend of the wrist, the button is pushed, the scissor lift is released, shooting the blade out. From here, when the blade goes to fall back in, a clip holds it in place. Adapt something to release the clip, say a press of the same button, and with that the blade falls back into place. Enough pressure on the blade in order to function properly, and you can release it from any position of the wrist, upside down, walking, jumping, whatever.

I know this aint incredible, but maybe it will spread an idea. or develop into something better. Or go ignored. Who knows. Its up to ya'll
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PostSubject: Re: The Assassin Extension Knife   May 25th 2010, 5:17 pm

MasterT wrote:

Now on the inside, where you lay it against your wrist, have a button that you press against with your wrist.

With the slight bend of the wrist, the button is pushed, the scissor lift is released, shooting the blade out. From here, when the blade goes to fall back in, a clip holds it in place. Adapt something to release the clip, say a press of the same button, and with that the blade falls back into place.


Hey Bro,... Welcome to the forum !....... You, like so many others have arrived here in your quest for knowledge about the AC Hidden Blades. This topic has been covered EXTENSIVELY in many numerous posts, and in many different threads. The fact that you managed to read through this entire thread is pretty amazing in itself, (usually the newbie kids just skim the thread then post a question that's already been answered a hundred times).


First off,....... The Wrist Button idea has a couple of drawbacks. Because of it's location, it's tricky to design a button that won't be pressed by accident,...yet still be easy to trigger with a "slight bend of the wrist".

Another problem with this design is that you need a space between the wrist and the button so that the button isn't being pressed all the time, and this "space" means that the entire rig has to be mounted only on the forearm. (It's a lot easier to get a solidly mounted device if you have a location near the wrist to lash to).

I discussed this problem with another member in a different thread..... Here's the link if you want to check it out in more detail.
http://sinza.forumotion.com/type-5-double-action-automatic-both-way-f17/ac-hidden-blade-ramp-trigger-design-t1667.htm

The only other major problem I see is that you mention pressing the button again to have the blade unlock and having it "fall back into place". If your lazy tong mechanism is spring loaded to "shoot the blade out" when it's released, it will require re-compressing the spring before the blade could "fall back" into it's housing.


Read through a few more posts and check out the sections under "Gravity Blades", "Double Action Out The Front" (DAOTF), and "Single Action Out The Front"(SAOTF)....... You might find the information there useful as well.



Shadowhound
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PostSubject: Re: The Assassin Extension Knife   June 13th 2010, 5:07 am

hi newbie here

I saw drawing of LordThanatos3 http://sinza.forumotion.com/type-3-gravity-blade-f15/the-assassin-extension-knife-t557-200.htm#23404

so .. can anyone give me a reason why this shouldn't work ... maybe the holes on middle of blade will week him significant .. or it can be improved ..




thnx
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PostSubject: Re: The Assassin Extension Knife   June 13th 2010, 5:45 am

You learn nothing without trying.

Stop drawing and start building.

Many of your designs we don't know if it will work or not. Start with cardboard, work your way up to metal.

Take a risk and build something. If it dosen't work you didn't fail, you just need to keep working. You can draw pictures and ask if it will work forever, but you won't know if it will work or not unless you try.

So try.
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PostSubject: Re: The Assassin Extension Knife   June 29th 2010, 8:59 pm

I am building a blade.
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PostSubject: Re: The Assassin Extension Knife   July 5th 2010, 9:24 pm

Here is my idea for a locking/retraction system for specifically this Assassin Extension Knife

Please understand that this is just a drawing I made very quick, and is no way accurate. Again, I am not saying this is exactly how it will work, this is just explaining the idea.


Photobucket

First of all, as Sinza said, the best lock would have to lock the blade, not the cover or anything else. The lock is just a bit of metal bent so as to press upon the back of the blade (it can also be made wider and sturdier)

As the video showed, extension is not a problem. However, retraction is. The technique of retraction would require the lock to be lifted as well as pull the blade (all with one hand, of corse :) )

So, have the retraction string go through the lock, so it will stretch up as the string is pulled.

----
To the observant, you would have already found a few flaws.

- The biggest one, I believe, is all the extra slack (I believe the word is,) of the string when the blade is closed.

----

Again, I am in no way of saying that this is exactly how the technique will work. I drew it as to only show the movement of the steps.

To anyone who wants to try and make it, feel free and modify it (which you'll have to)

I would like to see it made it real life
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PostSubject: Re: The Assassin Extension Knife   July 19th 2010, 9:50 pm

well i think that is preaty coll also
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PostSubject: Re: The Assassin Extension Knife   July 23rd 2010, 4:12 pm

automotion wrote:
On another design i saw not related to this design it looked like it was somehow connects to ur tendons in ur arm because if u look real close in the game u see the guy hold his fingers a certain way and when its not being used his hands look normal.
Its to protect his finger so that it doesn't get stabbed.
The original design in the game had it so you had to cut off your finger.
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PostSubject: Re: The Assassin Extension Knife   July 25th 2010, 4:42 am

seems simple!
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PostSubject: Re: The Assassin Extension Knife   August 23rd 2010, 7:43 pm

I'm not sure if i want to buy this, i mean looks goog but i'm think that i prefer to build it by my self!!!!


I'm not sure if I want to buy this. I mean it looks good, but I think that I'd prefer to build it by myself!!!!
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