Crossbows - Everything about Building, Modding, and Using your Crossbow Gear

Latest topics

» Wooden Crossbows - Seeking Info
by Franck Yesterday at 4:16 pm

» crossbow prod material/what type of steel
by Franck Yesterday at 4:11 pm

» Ball shooting Crossbows worth the bother
by septua Thu Jul 19, 2018 11:07 am

» my composite crossbow lath project
by stuckinthemud1 Wed Jul 18, 2018 1:35 pm

» Limb harding\ tempering ?
by ragumup Wed Jul 18, 2018 2:03 am

» how made homemade (reverse) crossbow ?
by Ricardo Sat Jul 14, 2018 3:56 pm

» Pump action crossbow (powerful)
by Ivanhoe Fri Jul 13, 2018 7:50 am

» nut from antler
by OrienM Thu Jul 05, 2018 8:50 am

» Nut from a pool que ball?
by drawknife Sun Jun 17, 2018 5:29 am

» Trouble with my Gafa
by drawknife Fri Jun 15, 2018 2:56 am

» Do all triggers Have claws - what types and claw or no claw
by globalmark Thu Jun 14, 2018 12:19 am

» For Sale: Masai Crossbow
by TonyU Mon Jun 11, 2018 1:15 pm

» Medieval composite bows
by juanjo Fri Jun 08, 2018 5:10 am

» yew and sinew prod help needed
by stuckinthemud1 Thu Jun 07, 2018 1:34 am

» Small gothic crossbow (with wooden lever)
by OrienM Fri Jun 01, 2018 10:35 am

» Binding on the stirrup
by Geezer Sat May 26, 2018 7:26 am

» horn inlay and veneer
by OrienM Thu May 24, 2018 8:44 pm

» Presentation
by c sitas Wed May 23, 2018 4:31 pm

» My latest crossbow
by drawknife Tue May 22, 2018 3:13 pm

» The Arbalist Guild - Around the World
by stuckinthemud1 Sun May 20, 2018 5:32 am

» angles and rivets
by Geezer Fri May 18, 2018 1:16 pm

» morticed nut blocks
by Dark Factor Wed May 16, 2018 12:02 pm

» Crossbow triggers
by Croftage Mon May 14, 2018 1:41 pm

» Cocking lever
by c sitas Fri May 11, 2018 8:09 am

» Late roman crossbow
by Dark Factor Wed May 09, 2018 10:27 am


    Collapsible/Folding Shoulder Stocks

    Share
    avatar
    Ivo
    Admin
    Admin

    Posts : 1041
    Join date : 2009-11-25
    Age : 30
    Location : NJ, USA

    Collapsible/Folding Shoulder Stocks

    Post by Ivo on Mon May 09, 2011 8:09 pm

    Guys, I just had another case of FAIL.

    You know this child hood sorrow every wanabe Engineer encounters? You
    know the one where you spend a ton of time designing something only to
    find out that the bicycle was invented by some French guy? Laughing

    So here it is, My invention and contribution to the opening of this Collapsible/Folding Stocks topic.












    Pretty kick ass stock ey?...that's what I kept telling myself when designing it, only with "It's going to be..." in the beginning of the phrase.

    Perhaps you guys might know of a few more cool folding stock designs that I'm inventing? Razz

    Let me know please...I was in the dumps all day today because of this. Laughing

    Ivo


    Last edited by Ivo on Mon Jul 11, 2011 5:55 pm; edited 1 time in total




    * *
    ~ "I don't have any special talents. I'm only passionately curious."
    * * *
    ~ "All Genius is Simple"
    * *
    avatar
    Basilisk120
    Moderator
    Moderator

    Posts : 548
    Join date : 2010-03-01
    Age : 39
    Location : Arizona

    Re: Collapsible/Folding Shoulder Stocks

    Post by Basilisk120 on Mon May 09, 2011 9:16 pm

    That really is a neat design. I have over looked it in the past, to simple, but looking at it again. I like it smooth and simple and clean.

    Good for you Ivo on inventing it. Razz Yeah I know the feeling of creating something only to find it has been done already. It gets worse if the other design is better Crying or Very sad

    I have always been partial to the HK MP5 collapsible stock http://www.hkparts.net/shop/pc/MP5-Stocks-Fixed-Stocks-and-Retractable-Stocks-c83.htm



    Another snazzy design http://en.wikipedia.org/wiki/File:MP_40_Schmeisser_Machine_pistol-_randolf_museum.jpg



    Everything else I looked at was pretty much run of the mill folding stocks.



    Something Something Dark Side
    avatar
    Ivo
    Admin
    Admin

    Posts : 1041
    Join date : 2009-11-25
    Age : 30
    Location : NJ, USA

    Re: Collapsible/Folding Shoulder Stocks

    Post by Ivo on Sun May 15, 2011 2:57 am

    Sorry it took me so long to get back to this topic. Once again I'm caught up in work.

    The H&K stock is a sweeet, I actually tried replicating it and learned about a few interesting details in the process.

    My inspiration were a bit different though...

    Saw CheTac M200 and fell in love with it.



    Looks like it even uses a cam lever to lock the stock in place. drunken



    And the platform chosen for the mod was one of those Taiwanese folding crossbows...chose the platform after seeing this crossbow made by Zaoshi (some company in Taiwan that's notorious for cloning a variaty sports equipment...a nock off manufacturer of sorts).

    http://www.teraasekeskus.com/tuotteet.asp?osasto=zhaoshi&lan=eng


    Drag for a 360 view.

    ...still the folding bow they made actually showed some interesting features(like the unique folding limbs that are locked by swinging the stirrup in place) and I moved on with the mod.



    Now the issues I was talking about is that this wire stock was flexing left and right on me, I used a 3/8" rod and the butt still tilted to the right when I shouldered it. It was comfortable and all since it shifted to contour the shoulder anatomy, but I abandoned the project since it didn't instill in me much confidence. Might pick it up again though and try to reinforce it somehow...perhaps do a molded hollow butt/cheekpiece part similar to CheTac and use thicker rods(probably even tubes or slides). Any suggestions welcome. Smile

    I got more on the Uzi stock, but I'm out of time now and most of it will have to wait till tomorrow(ok, I know it's already 4 hours into tomorrow, so tonight actually Razz )

    OK, Last thing, since I just can't not mention it...

    Good for you Ivo on inventing it. Razz
    Yeah I know the feeling of creating something only to find it has
    been done already. It gets worse if the other design is better Crying or Very sad

    Yeh, it really sucks, but thinking about it now....at least we don't have to work out all the bugs. Razz
    What makes me happy is this...I would have spent more money building my half ass prototype when in reality that stock goes for only $15 on this site: Link
    *don't know what I'm going to do with the slide cover that comes with it, but I'm getting the stock to use with the project that I was designing it for...hey saves me some time, so why not? Smile *

    Ivo




    * *
    ~ "I don't have any special talents. I'm only passionately curious."
    * * *
    ~ "All Genius is Simple"
    * *
    avatar
    Basilisk120
    Moderator
    Moderator

    Posts : 548
    Join date : 2010-03-01
    Age : 39
    Location : Arizona

    Re: Collapsible/Folding Shoulder Stocks

    Post by Basilisk120 on Sun May 15, 2011 10:55 pm

    $15 for a collapsible stock? Shocked I just might order one of those to have on hand till I can figure out what to do with it. Very Happy

    As for the bending issues. A tube would be more resistant to bending than a similar diameter solid bar. I did get a couple of ideas for crossbow collapsible stock. Not sure how buildable they are. I'll try to get some drawings up soon.

    The nice thing about a crossbow stock is that it can be lighter since it doesn't have to take the strong recoil shock of a rifle.



    Something Something Dark Side

    8fingers
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 188
    Join date : 2011-04-06
    Location : Chetwynd, BC, Canada

    Re: Collapsible/Folding Shoulder Stocks

    Post by 8fingers on Tue May 24, 2011 1:03 am

    It seems to me that using steel with a square cross section might flex less than a piece of round stock same diameter. At least you could control the direction of flex?
    avatar
    Ivo
    Admin
    Admin

    Posts : 1041
    Join date : 2009-11-25
    Age : 30
    Location : NJ, USA

    Re: Collapsible/Folding Shoulder Stocks

    Post by Ivo on Fri Jul 08, 2011 6:56 pm

    Found another interesting folding stock on Izhmash (weapons manufacturer) website.



    Couldn't find a good video showing the over the receiver folding stock in action, kinda lame, but what can you do...the thing is still pretty cool with it's cylinder mag and good for show. Smile



    I think it's very similar to the stock on this little prop crossbow, not sure if it was copied off of Bizon or the builder had the same fortune/misfortune that I had with the Uzi stock.




    Still hunting out these cool little ideas. Wink

    Ivo




    * *
    ~ "I don't have any special talents. I'm only passionately curious."
    * * *
    ~ "All Genius is Simple"
    * *

    Sponsored content

    Re: Collapsible/Folding Shoulder Stocks

    Post by Sponsored content


      Current date/time is Sat Jul 21, 2018 5:43 am