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

» [solved]Skane/Lillohus crossbow thread
by stuckinthemud1 Sat Aug 10, 2024 3:16 pm

» Colletiere a Charavines continuing experiment
by stuckinthemud1 Fri Aug 02, 2024 7:13 am

» What you building?
by hullutiedemies Tue Jul 09, 2024 12:39 am

» 12th Century Chinese Crossbow Chronographed
by stuckinthemud1 Fri Nov 24, 2023 3:50 pm

» Crossbow Stock
by kenh Tue Oct 31, 2023 6:19 am

» Cocking - how
by stuckinthemud1 Thu Aug 03, 2023 4:24 am

» Questions around heavy crossbow lath buildin
by stuckinthemud1 Wed Apr 26, 2023 1:10 am

» Arab Crossbow
by stuckinthemud1 Tue Apr 25, 2023 7:57 am

» prod angle, and lever trigger for sale anyone?
by stuckinthemud1 Mon Mar 20, 2023 5:54 am

» flexible string
by jasper1978 Mon Mar 20, 2023 1:25 am

» jens sensfelder
by jasper1978 Wed Mar 08, 2023 11:58 pm

» 400lb Windlass crossbow bolts weight and accuracy shooting high.
by stuckinthemud1 Sun Mar 05, 2023 2:53 pm

» Codex Löffelholz crossbow
by stuckinthemud1 Tue Jan 24, 2023 4:14 pm

» Digitar prodsc
by stuckinthemud1 Sun Jan 15, 2023 2:42 pm

» Troubleshooting
by Andy. Fri Jan 06, 2023 12:29 pm

» Wood Prods
by stuckinthemud1 Fri Dec 30, 2022 12:47 pm

» Colletiere a Charavines crossbow
by stuckinthemud1 Fri Dec 30, 2022 8:54 am

» Simplified Löffelhotz speedloader
by stuckinthemud1 Fri Dec 09, 2022 4:05 pm

» 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

» 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


4 posters

    New ballista: for projectiles, not arrows

    avatar
    Mr. Apol
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 17
    Join date : 2011-04-27
    Location : North Carolina

    New ballista: for projectiles, not arrows Empty New ballista: for projectiles, not arrows

    Post by Mr. Apol Wed Nov 16, 2011 12:08 pm

    OK, I have collected a number of components I'd like to assemble into a ballista sized stonebow. For power I'll be using a car leaf spring and building a frame out of 4x4 timber. I want the ballista to hurl "bullets"--gourds, croquet balls, maybe even stones, etc. Since the leaf spring is a continuous piece of steel, I thought I would mount it like a stonebow, with a raised front end, a cutaway center stock, and a raised firing mechanism. (See various forms of stonebow in Payne-Gallwey to see what I mean). Because the spring is finished with closed loops at each end (where the mounting bolts secure it to the car frame), creating a double string and pouch to hold the projectile ought to be fairly easy . . . does anyone out there have any experience with stonebows or other bullet-throwing bows?

    thanks,

    Paul
    Geezer
    Geezer
    Master Crossbowyer
    Master Crossbowyer


    Posts : 1194
    Join date : 2010-01-12
    Age : 76
    Location : Austin, Texas, USA

    New ballista: for projectiles, not arrows Empty Re: New ballista: for projectiles, not arrows

    Post by Geezer Wed Nov 16, 2011 7:03 pm

    I have only one thing to say about double-string stonebows. It is possible to make them shoot backwards. It will be a surprise when it happens, and it's no fun at all. That's why I don't make stonebows anymore. Geezer
    Todd the archer
    Todd the archer
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!


    Posts : 581
    Join date : 2010-02-25
    Age : 62
    Location : sellersville,pa.

    New ballista: for projectiles, not arrows Empty Re: New ballista: for projectiles, not arrows

    Post by Todd the archer Wed Nov 16, 2011 8:18 pm

    Here is what Geezer is talking about

    https://www.youtube.com/watch?v=-OZjHjJToVo&feature=related



    Todd
    avatar
    Mr. Apol
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 17
    Join date : 2011-04-27
    Location : North Carolina

    New ballista: for projectiles, not arrows Empty OK . . .

    Post by Mr. Apol Wed Nov 16, 2011 8:32 pm

    Hmm, that kind of backlash is possible any time you use an elastic band, isn't it? It happens because the elastic stretches equally well in any direction, and if the projectile shifts, it could go anywhere?

    If I build a ballista with a steel spring bow and stranded steel bowstrings, will that reduce or prevent back firing?

    I was more worried about hitting my own frame and having the missile rebound at me, but this is daunting, I must say.

    Anyone have a stonebow they use nowadays?

    Paul
    Geezer
    Geezer
    Master Crossbowyer
    Master Crossbowyer


    Posts : 1194
    Join date : 2010-01-12
    Age : 76
    Location : Austin, Texas, USA

    New ballista: for projectiles, not arrows Empty Re: New ballista: for projectiles, not arrows

    Post by Geezer Thu Nov 17, 2011 7:36 am

    Geezer here, concerning ball-firing catapults. What you want is a 'euthytone' ball-shooting balista. These machines use a broad web to propel a ball or similar projectile down a track, like a crossbow. They're not as friction-free as a stone-bow, but the string itself has less wind resistance, and they don't shot backwards on a whim.
    jake-owa
    jake-owa
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?


    Posts : 145
    Join date : 2010-11-06

    New ballista: for projectiles, not arrows Empty Re: New ballista: for projectiles, not arrows

    Post by jake-owa Fri Nov 18, 2011 12:59 pm

    If I were building a stone bow I would make a clap style cover for the string path. That way you eliminate the possibility of the string jumping and reverse firing the projectile. As long as your "serving" fits the string slot well and can't climb over your bullet you should be golden. This also eliminates the need for a heavy pouch that will rob your projectile of fps. Engineered correctly it should have very minimal friction and can also house a hopper or clip that drops bullets from above.

    Sponsored content


    New ballista: for projectiles, not arrows Empty Re: New ballista: for projectiles, not arrows

    Post by Sponsored content


      Current date/time is Tue Nov 26, 2024 5:08 pm