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Main Boards => PowWow => Topic started by: luvnlongbow on January 04, 2022, 11:27:40 PM

Title: B50 vs B55
Post by: luvnlongbow on January 04, 2022, 11:27:40 PM
I am wondering what if any difference there is in the performance of these string materials. I have shot B50 but have not shot B55. I am interested not so much in speed but in the feel of the shot. I am wanting to try them on my ASLs. Any information will be very much appreciated.
Title: Re: B50 vs B55
Post by: Pine on January 05, 2022, 12:02:50 AM
I like B55 slightly better.
Another point, B55 doesn't bleed color as bad as B50.
Title: Re: B50 vs B55
Post by: Pat B on January 05, 2022, 08:53:42 AM
I've always used B-50. When they stopped making it I changed to B-55. Only difference I've noticed is smaller diameter.
Title: Re: B50 vs B55
Post by: Possum Head on January 05, 2022, 09:57:41 PM
Shot both no preference
Title: Re: B50 vs B55
Post by: Lehtis on January 06, 2022, 01:23:12 AM
B50 stretches more than B55 (BCY55). I pre-stretch my LB strings with 63 kg (140 lbs) weight, at least over night, usually a couple of days. I have not measured the difference, perhaps 50 % less. After pre-stretching B55 also sets faster to proper string height on my ca. 75 - 85 lbs bows, single loop on upper nock and bowyers hitch on lower nock.

Note: Polyester, the chemical name for these string materials, is the only allowed string material in IFAA’s Historic Bow classes. That’s why I’m stuck on these instead of using Fast Flight or other more modern less stretchy materials.
Title: Re: B50 vs B55
Post by: Rob DiStefano on January 06, 2022, 07:59:17 PM
I prefer B55 for all the reasons Pine and Lehtis posted. 

I'll add one more personal reason - the "spring" of Dacron (polyester) affords me some measure of shot "stability" that I typically find lacking with HMPE string fibers.
Title: Re: B50 vs B55
Post by: luvnlongbow on January 06, 2022, 10:07:49 PM
Thank you for all your responses.
Title: Re: B50 vs B55
Post by: Petrichor on January 07, 2022, 10:44:15 PM
B55 all the way. B50 is way too stretchy and b55 is plenty safe for non free bows.
Title: Re: B50 vs B55
Post by: Pat B on January 08, 2022, 08:47:10 AM
B-50 is not being made anymore. You can still find a spool or two but B-55 has taken its place.
Title: Re: B50 vs B55
Post by: Rob DiStefano on January 09, 2022, 08:51:04 AM
Brownell still makes and sells spools of B50 bowstring fiber.