The Arbalist Guild

Would you like to react to this message? Create an account in a few clicks or log in to continue.

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

Latest topics

» Troubleshooting
by Cscott Tue Nov 15, 2022 11:55 am

» Fiberglass H-bows
by c sitas Sat Nov 12, 2022 8:44 am

» Bad Antler
by drawknife Sat Nov 12, 2022 3:48 am

» Anyone make their own bolts?
by Juniper Mon Oct 17, 2022 8:20 am

» Colletiere a Charavines crossbow
by stuckinthemud1 Sun Oct 16, 2022 3:39 pm

» Josef alm in English
by Juniper Sat Oct 15, 2022 4:22 am

» Qin/Han lock drawings
by kenh Fri Sep 23, 2022 8:16 pm

» stirrup dimensions?
by stuckinthemud1 Thu Sep 01, 2022 1:49 pm

» Skane/Lillohus lockbow information needed
by stuckinthemud1 Sun Aug 14, 2022 6:23 am

» need help contacting le musee Dauphinois Grenoble
by stuckinthemud1 Sat Aug 13, 2022 3:22 pm

» Low Draw Weight Build
by stuckinthemud1 Fri Aug 12, 2022 3:09 pm

» Trigger testing Rig/Jig?
by ora8i Fri Aug 12, 2022 1:13 pm

» best type of horn to use..
by stuckinthemud1 Fri Jun 24, 2022 6:13 am

» Han Dynasty Chinese Crossbow
by hullutiedemies Fri Jun 17, 2022 1:00 pm

» Drawing of Crossbow
by stuckinthemud1 Fri Jun 03, 2022 3:01 am

» "How To Make Everything": Early Crossbow
by stuckinthemud1 Thu Jun 02, 2022 3:41 am

» Black inlay
by stuckinthemud1 Fri May 13, 2022 3:18 pm

» Roller nut details
by drawknife Thu Apr 21, 2022 2:44 pm

» 330#/7" wood bow
by Anatine Duo Tue Mar 29, 2022 11:08 am

» starting a 1400's replica
by stuckinthemud1 Thu Feb 24, 2022 1:26 pm

» 18th century German crossbow reproduction
by Fangbows Sun Feb 20, 2022 7:15 am

» replacement for baleen?
by tghsmith Mon Jan 17, 2022 9:30 am

» Medieval crossbow finished
by stuckinthemud1 Wed Jan 12, 2022 3:05 pm

» Trigger mechanisms
by stuckinthemud1 Mon Jan 03, 2022 10:23 am

» Finish wooden stock
by stuckinthemud1 Sat Dec 25, 2021 9:06 am


3 posters

    Ideas and designs for a Crossbow Inside A Pipe?

    JacobL
    JacobL
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.


    Posts : 76
    Join date : 2017-07-30
    Age : 21
    Location : Manitoba, Canada

    Ideas and designs for a Crossbow Inside A Pipe? Empty Ideas and designs for a Crossbow Inside A Pipe?

    Post by JacobL Mon Jan 08, 2018 10:19 pm

    So a while ago I made this cool little rubber powered junk launcher:



    It's a very simple, easy, and compact design, and it shoots with surprising force. 

    Now, I was thinking. What if I made a speargun-style slingshot crossbow, but made it so I can slide it into a tube of ABS pipe? If sufficient arrow spine is used, the crossbow could be loaded just like a pneumatic speargun, putting the arrow into the barrel, sticking it's point into the ground, and then using your chest to manually push the setup downwards onto itself, cocking it. The advantage of having everything contained within a barrel is the pure safety of it all, which gives it an advantage to a regular crossbow; unless your hands are in front of the muzzle, nothing will touch you, or hurt you. Another advantage could be stealth. If the rubber itself is contained withing two pieces of pvc pipe, which is contained within some 2'' ABS pipe, and sealed with a whisper biscuit on the muzzle and a wooden dowel on the back plate, I think that the already quiet rubber bands could be even more silenced, possibly creating an ultra stealthy arrow launcher. 

    Would also just be cool to make, I mean, the velocity probs wouldn't be all that high, but imagine having a huge cannon-looking gun with a broadhead on one end, like a ''Pipe of Doom''  Jam

    Seems pretty cool to me. 

    Does anybody else think this would be a cool thing to make?
    Anatine Duo
    Anatine Duo
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.


    Posts : 65
    Join date : 2013-10-07
    Location : Muskoka, Canada

    Ideas and designs for a Crossbow Inside A Pipe? Empty Re: Ideas and designs for a Crossbow Inside A Pipe?

    Post by Anatine Duo Tue Jan 09, 2018 12:49 pm

    Yes cool, especially as you can keep your rubber warm in the tube!  I gave up on the concept for some reason I can't remember... maybe just busy.


    Personally I wouldn't want to cock it using the arrow even though it is a simple solution.

    As far as speed goes my pocket slingshot with tapered bands gave me well over 300 fps with marbles consistently.
    avatar
    kenh
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!


    Posts : 865
    Join date : 2012-08-03
    Age : 74
    Location : Living Aboard a Sailboat in Fort Myers, FL

    Ideas and designs for a Crossbow Inside A Pipe? Empty Re: Ideas and designs for a Crossbow Inside A Pipe?

    Post by kenh Tue Jan 09, 2018 2:16 pm

    Interesting idea, even if it's not a *cross*bow.  The Slingshot Channel might have more info to share about the concept.  I agree that cocking by pushing on the arrow is not a good idea.
    JacobL
    JacobL
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.


    Posts : 76
    Join date : 2017-07-30
    Age : 21
    Location : Manitoba, Canada

    Ideas and designs for a Crossbow Inside A Pipe? Empty Re: Ideas and designs for a Crossbow Inside A Pipe?

    Post by JacobL Tue Jan 09, 2018 6:23 pm

    I suppose the arrow would flex during cocking. Perhaps a thick steel ramrod would work, and you could pull it out and muzzle load the arrow afterwards (safety switched on!)

    And yes, I know for sure that my slingshots really do poorly in the cold, shoot decent but not great.

    Anatine, I agree that great speed can be reached with the right bands. I don't use theraband (the durability puts me off), but I have a slingshot with tapered Dankung 1632 tubes. That is the smallest, lightest size of dankung tubing, and it shoots quite fast. 

    I also have this old extended draw starship slingshot made out of walking stick. With dankung 1842, tapered and with a draw length that's like 8 feet long, it puts holes through old steel buckets.

    Rubber is a very good medium, and if putting it into some pipes keeps it warm and eliminates the hysteresis problems, I'd love to see it. 

    Does anybody know were to get a whisker biscuit for very cheap? or should just make a simple nock on the front?

    I will make it if my designs work, just need to find a nock system.
    JacobL
    JacobL
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.


    Posts : 76
    Join date : 2017-07-30
    Age : 21
    Location : Manitoba, Canada

    Ideas and designs for a Crossbow Inside A Pipe? Empty Re: Ideas and designs for a Crossbow Inside A Pipe?

    Post by JacobL Tue Jan 09, 2018 6:38 pm

    Oh yeah, and if anybody is interested, or sees any holes in my plans, inform me.

    My plan is to have the 2'' pipe around the length of the arrow, if not a bit shorter. A piece of 40mm dowel is slotted and has a one piece trigger sear mechanism inside. On the back of it is the backplate, which is pressed against the chest for cocking. There are two holes on the left and right of the dowel (out of the way of the trigger sear) that will hold two pieces of thermal pvc, which will hold the rubber inside. The pvc has a groove on one side of each piece, and a string, or perhaps a piece of aluminum rod is used to connect the rubbers inside of the pieces of PVC, forming the ''bowstring''. 

    The trigger sear is a simple one piece claw that you actually push away from yourself to activate. it holds the string from up above, not down below, like most crossbows. A handle is attached in the same way I've done in my Junk Launcher video, and this handle has a simple trigger, which has a string attched to it. This string runs to the back trigger sear. When you pull the trigger, it pulls forward the rearward trigger sear and releases the string.

    At the front of the gun, another piece of 40mm dowel is used to secure the two pipes, and either a normal nock groove or a whisker biscuit is used to hold the arrow, and the point stick out a bit to allow clearence for broadheads.

    I make it sound so complicated, but it's quite simple. Imagine joerg's bullpup arrow shooter, but concealed in a pipe. If everything is slimmed down to fit inside, it should fit.

    It'll be like a weird plumber's arrow blunderbuss  Laughing

    Perhaps this design could be of use:http://diyworkplace.com/31-spring-crossbow.html

    Thanks for the replies everybody!

    Sponsored content


    Ideas and designs for a Crossbow Inside A Pipe? Empty Re: Ideas and designs for a Crossbow Inside A Pipe?

    Post by Sponsored content


      Current date/time is Sat Nov 26, 2022 9:24 am