okay for starters to measure string for a cross bow is no different
than measuring for a long bow. or recurve for that matter. you go from nock to nock following the curvature. then if your going with a continuous loop. subtract 3 inches from that total.
It is going to be a thick string no matter what material or style. you use. But I have made a couple of strings for a Crossbow. I made it in continuous loop, but I made it out of Fast Flight, it strength is 2x over B50. it is a safety thing for me. If memory serves, I would have to say I made it continuous loop. I think I went 15 laps around the jig.
And get the serving designed for crossbow strings. It WILL set you back but again, SAFETY, SAFETY, SAFETY!!!!
--- In SCA-Archery@yahoogroups.com, Sam Wise <sam-wise1@...> wrote:
> A friend has asked me to make a crossbow string for his wife. The prod
> should pull about 150lbs. That is about all the information I have on it.
> I know how to find the length of a longbow or recurve string. However,
> I don't know much about making crossbow strings.
> How many strands of B-50 should be in a continuous loop string?
> I know the center serving should be double served. Should the end loops
> be double served?
> Without knowing how long the string should be, is there anyway to
> measure the prod, draw length, and whatever else, to figure out how long
> the string should be?
> What other information should I have before getting in over my head?
> Samuel le Medier
> East Kingdom, Southern Region.