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Main Boards => The Bowyer's Bench => Topic started by: peter61 on September 10, 2013, 05:25:00 AM

Title: building a horsebow
Post by: peter61 on September 10, 2013, 05:25:00 AM
Hello Tradgangers!
When building a horsebow (glass-laminates-glass), is it necessary to take tapered lams or can I use parallel lams?
Greetings, Peter
Title: Re: building a horsebow
Post by: LittleBen on September 11, 2013, 01:42:00 PM
taperede lams will make the limbs bend more midlimb and out. Parallel lams will tend to focus more of the bending near the fades.

You could probably go either way. Check out supertiller ... it s program which analizes limb profile and taper to determine draw weight and drawen and strung profiles. That might help you get the full draw and strung profile you are looking for.
Title: Re: building a horsebow
Post by: NYArrow on September 16, 2013, 10:03:00 PM
Ive searched far and wide for the super tiller program but cant seem to find a version that is operational. Anyone have a link or download?
Title: Re: building a horsebow
Post by: scars on September 17, 2013, 07:24:00 PM
Try this
http://www.buildyourownbow.com/build-alongs/supertiller/
Title: Re: building a horsebow
Post by: LittleBen on September 17, 2013, 08:07:00 PM
I've found Supertiller to be really finicky ... it runs fine on some computers and not well on others. Haven't been able to figure out why. I've got an older laptop running windows XP I keep for running supertiller and some similarly basic open source boat design programs.
Title: Re: building a horsebow
Post by: scars on September 17, 2013, 08:59:00 PM
You need to enable macros in excel before you open supertiller.