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


2 posters

    Steel prod - unknown draw weight

    avatar
    Cornerstone
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 4
    Join date : 2019-05-18

    Steel prod - unknown draw weight Empty Steel prod - unknown draw weight

    Post by Cornerstone Sat May 18, 2019 5:19 am

    So, last summer a friend of mine was kind enough to give me an old crossbow steel prod. He got it about 8 years ago by the maker (not knon by name) and passed it onto me since he knows my affection for crossbows. I've been really eager to start building with it, but there's a problem - both draw weight and length is unknown...
    So, my questions is if anyone has any tips on how to figure the numbers out without risking breaking the bow and risking injury?
    It's not a monster of a bow lookwise, but if I bend it over my knee with all my strength it only bends about 1-2 mm. The bow is supposedly x-rayed and should be entirely free of cracks.
    Here are some measurments:
    Length tip to tip - 78 cm
    Width at center - 2,2 cm
    Width at tips: 1,2 cm
    Thickness at center: 1 cm
    Thickness at tips: 0,5 cm

    Other clues are two numbers stamped into the top of the bow at the very center that says 1   33 with a dot in between to mark the center.
    So, what am I dealing with here? Grant me your wisdom! 
    Steel prod - unknown draw weight 20190510
    Steel prod - unknown draw weight 20190511
    avatar
    Rizzar
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?


    Posts : 194
    Join date : 2012-08-11
    Location : Germany

    Steel prod - unknown draw weight Empty Re: Steel prod - unknown draw weight

    Post by Rizzar Mon May 20, 2019 10:49 am

    Hey.


    The point is the supposed center of the prod.
    The numbers are a production number (#133) and do not give a hint to data.

    If you know the prodsmith (this one is clearly not made by a beginner), you could get in contact to him and ask him.

    Is there no forging mark on the bow???

    Coincidence:
    got some bows here that are marked the same way.
    is it possible your friend got the bow in or near germany???

    ahh, i have the feeling the prod is made by jens sensfelder.
    Style, detail and time seems right for around 8 years ago, since i have numbers around 200 made 2014, could be he got his forging mark later on.

    If i give it a guess it is supposed to work for a bullet shooting crossbow but does not neccessarily apply.

    Greetings
    avatar
    Cornerstone
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 4
    Join date : 2019-05-18

    Steel prod - unknown draw weight Empty Re: Steel prod - unknown draw weight

    Post by Cornerstone Mon May 20, 2019 1:18 pm

    Thank you for your answer! 
    Found a small stamp on it, could you perhaps identify it? 
    Steel prod - unknown draw weight 20190512
    avatar
    Rizzar
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?


    Posts : 194
    Join date : 2012-08-11
    Location : Germany

    Steel prod - unknown draw weight Empty Re: Steel prod - unknown draw weight

    Post by Rizzar Mon May 20, 2019 10:37 pm

    You are lucky, since this is a pure coincidence

    As I thought it is in fact the forging mark of jens sensfelder.
    Steel prod - unknown draw weight 110

    He is a good guy and I know he provides his prods with safety hints and data to work with.

    ask him if he can provide you with the data for the prod, he must have some type of chart for his works.

    good luck and inform us here if you are successful
    avatar
    Cornerstone
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows


    Posts : 4
    Join date : 2019-05-18

    Steel prod - unknown draw weight Empty Re: Steel prod - unknown draw weight

    Post by Cornerstone Sat May 25, 2019 3:07 am

    I managed to get in contact with Jens, thank you so much Rizzar! 
    The bow was made in the autumn of 2011 and has these specifications: 

    String length total 770 mm
    Bracing 65 mm
    Centre Cross section 22x11 mm
    Outer Cross section 13x5 mm
    Weight 872 g

    At a bracing of ca. 70 mm and a drawing distance of 180 mm (Distance bow - lock), the bow has a draw weight of ca. 115 kg.

    Off to the drawing board! Very Happy 

    Sponsored content


    Steel prod - unknown draw weight Empty Re: Steel prod - unknown draw weight

    Post by Sponsored content


      Current date/time is Mon Dec 02, 2024 9:29 pm