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Main Boards => The Bowyer's Bench => Topic started by: T Folts on April 05, 2011, 10:22:00 PM

Title: String wear problem
Post by: T Folts on April 05, 2011, 10:22:00 PM
I asked this question on another site so ingnore if you have already seen it.
I am getting string wear prematurely on the string grove. everything is rounded and smooth but the string is wearing on the  belly side of the bow. This is a takedown R/D bow and I think the string angle is around 55deg. Here is a couple pics strung. Whats you input on this?
(http://i605.photobucket.com/albums/tt131/tfolts/stringgrove002.jpg)
(http://i605.photobucket.com/albums/tt131/tfolts/stringgrove004.jpg)
(http://i605.photobucket.com/albums/tt131/tfolts/stringgrove001.jpg)
Title: Re: String wear problem
Post by: DVSHUNTER on April 05, 2011, 10:30:00 PM
Looks fine, so it must be some abrasion. If the string had dirt in it with the wax, it could act like sandpaper and wear like that.  Maybe round the belly edge a bit?
Title: Re: String wear problem
Post by: John Cooper on April 05, 2011, 10:31:00 PM
Take a Q-tip and rub it in the string groove.  If there's a rough spot, that'll catch it.
Title: Re: String wear problem
Post by: StoneAK on April 05, 2011, 10:56:00 PM
I agree the Q tip will tell you if it is rough
Title: Re: String wear problem
Post by: vanillabear? on April 05, 2011, 11:12:00 PM
Title: Re: String wear problem
Post by: Pat B on April 06, 2011, 12:11:00 AM
I would releave the angle where the string makes the turn from the groove. Plus anything above the groove is inert so any of that can be lessened too.
Title: Re: String wear problem
Post by: Aznboi3644 on April 06, 2011, 12:51:00 AM
I'd serve the loop with some B50 or whatever string material you got.
Title: Re: String wear problem
Post by: T Folts on April 06, 2011, 05:59:00 AM
The string in the pic is not the string I normally have on the bow, this is a B-50 that I use for tillering ect.. I use a D-10 padded with B-50. Thanks for the input I will look at all suggestions.
Terry
Title: Re: String wear problem
Post by: frank bullitt on April 06, 2011, 07:56:00 AM
T, I agree with Pat. The combo of the D-10 material and the angle, at the base of the loop, would be the cause!

Every time the bow is shot, your bending the loop, a severe shock! Like bending a piece of wire over and over.
Title: Re: String wear problem
Post by: aric on April 06, 2011, 08:00:00 AM
that looks exactly like the string angle on my rd longbows and i have noticed some wear also
Title: Re: String wear problem
Post by: aric on April 06, 2011, 08:04:00 AM
i believe vanillabear is correct because when i put the bow on the tree i could see that i need to give the string some room to move on the top of the string groove. this could be made worse if you have a long draw length.
Title: Re: String wear problem
Post by: T Folts on April 06, 2011, 12:17:00 PM
I checked the back edge by using my tiller tree and there is no contact. I will adjust the groves to releive the bend some and change the angle on my next bow.
Title: Re: String wear problem
Post by: aric on April 06, 2011, 03:52:00 PM
i think your angle looks good just soften those shoulders some
Title: Re: String wear problem
Post by: kennym on April 06, 2011, 08:46:00 PM
Here is where I am at to keep the corner from wearing as much.

(http://i32.photobucket.com/albums/d34/kennym/015-6.jpg)
Title: Re: String wear problem
Post by: Roy from Pa on April 06, 2011, 10:46:00 PM
Perfect Kenny.
Title: Re: String wear problem
Post by: aric on April 06, 2011, 11:21:00 PM
nice job. have to do the same on my latest
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