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

Latest topics

» Fast loading crossbow
by septua Mon Apr 23, 2018 9:22 am

» lashing a glass prod in raw hide?
by kenh Sun Apr 22, 2018 7:00 am

» Balestra Veloce / Leonardo DaVinci
by msalazar2310 Fri Apr 20, 2018 10:37 am

» Goats Foot Lever
by Geezer Wed Apr 18, 2018 12:42 pm

» Hickory and Ipe 180lb flatbow
by actionbow Mon Apr 16, 2018 1:56 pm

» goat foot questions.
by Geezer Sat Apr 14, 2018 10:26 am

» My latest crossbow
by actionbow Wed Apr 11, 2018 11:10 am

» Prod questions....
by Geezer Mon Apr 09, 2018 10:58 pm

» convert compound cross bow to ball shooter
by kenh Sun Apr 08, 2018 7:34 am

» Skane Lockbow replica (and making of)
by actionbow Wed Apr 04, 2018 11:10 am

» horn inlay and veneer
by Geezer Wed Apr 04, 2018 7:21 am

» String traps bolt to tiller when loosed
by Geezer Tue Mar 27, 2018 9:36 am

» How close to original would you go
by jamesjohnson Thu Mar 22, 2018 4:36 am

» Crossbow bullet bolt's
by Geezer Sun Mar 18, 2018 5:27 pm

» Moving the nut lugs forward.
by Dark Factor Mon Mar 12, 2018 12:33 pm

» Bridle length and waxing?
by Geezer Sun Mar 11, 2018 9:08 pm

» Draw length VS. prod length on wood prods
by Dark Factor Tue Feb 27, 2018 10:32 am

» Typical dimensions of late Gothic composite bows
by Dark Factor Sun Feb 25, 2018 4:10 am

» Medieval stirrup crossbow
by Dark Factor Fri Feb 23, 2018 10:55 am

» Reciprocating Saw?
by stuckinthemud1 Sun Feb 18, 2018 8:59 am

» Help Needed with Bullet Crossbow Prod
by Crossbowmen Sat Feb 17, 2018 2:43 pm

» Leaving the prod strung?
by JacobL Sat Feb 17, 2018 2:37 pm

» Crossbow for a 8 year old kid
by Daniel Levesque Fri Feb 16, 2018 2:11 pm

» Chinese carpenter make bed crossbow, earlest repeating crossbow and chu-ko-nu
by c sitas Thu Feb 15, 2018 8:49 pm

» Linen or Hemp String
by kenh Thu Feb 15, 2018 10:47 am

    Prod questions....


    Fresh Blood

    Doesn't mean
    I'm new to crossbows

    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 42
    Join date : 2011-04-19

    Prod questions....

    Post by Archer46176 on Mon Apr 09, 2018 8:29 pm

    A while back I bought 2 replacement crossbow prods from Alchem, They were for the Whamo crossbow that originally came with the aluminum prods. I had tons of trouble with Alchem and when I finally received the replacement prods they did not fit the Whamo, they would need several shims a new hooked bolt to hold the prod in the stock and the original prod was flat on the bottom to fit the stock where as the replacements have a V shape to them...

       All of that to ask if anyone has used the Whamo replacement prods to create a medieval bow? I know the power stroke for the prod but what angle would be a good one to set the prod at? Shouls I try to use the same angle from the original Whamo ? It doesn't look to be much of an angle.
    Master Crossbowyer
    Master Crossbowyer

    Posts : 1001
    Join date : 2010-01-12
    Age : 70
    Location : Austin, Texas, USA

    Re: Prod questions....

    Post by Geezer on Mon Apr 09, 2018 10:58 pm

    The replacement prods have a 'v' bottom to raise the ends of the prod, giving you less string drag, hence more efficiency.  You may find it helpful to put small shims under the bottom of the prod for extra support, but in fact, the Alchem asymmetric prod should give you much better performance than the old WhamO ones ever did.   As for the hooked bolt: it was a supremely crappy system to hold the prod in place, but with a little judicious shimming with leather or thin wood, you should eventually get it working substantially better than new.  Geezer.

      Current date/time is Thu Apr 26, 2018 9:02 pm