Traditional Archery Discussions on the Leatherwall


Limb Flaw/Crack Question

Messages posted to thread:
YamahaYG68 05-Dec-18
Salvador 06 05-Dec-18
YamahaYG68 05-Dec-18
Mpdh 05-Dec-18
YamahaYG68 05-Dec-18
George D. Stout 05-Dec-18
YamahaYG68 05-Dec-18
Orion 05-Dec-18
Car54 05-Dec-18
fdp 05-Dec-18
YamahaYG68 06-Dec-18
From: YamahaYG68
Date: 05-Dec-18

YamahaYG68's embedded Photo



I wanted to get some opinions from anyone who has had or seen limb failures on a wood & FG laminated limb.

The feature in the picture is on the face of the lower limb of my Yamaha YG68 68” 35# recurve.

It is tough to photograph, so the picture is the best of a bad lot.

There is a crack in the finish, as can be seen.

The crack follows a curved line in the pigment of the glass, the line is not dark, it is just another tone of white under the clear coat.

The tiller has not changed, the draw weight has remained constant

I am not really concerned about it as I am curious.

I bought the bow, used, in the early 1970’s; it is at least 45 years old and owes me nothing. I still shoot it, it may outlast me, or it may fail someday. It will never be a collector’s item, so I might as well use it.

The bow looks great from 5 to 6 feet away, but the original owner carried it in a padded case, great, except he there all the hard metal gizmos like stabilisers in the case with it. It has numerous little scratches and dings, but I am not sure this is one of those.

From: Salvador 06
Date: 05-Dec-18




That looks like a scratch in the finish, not a crack. But its hard to tell from that photo.

I don't know what you mean by "pigment of the glass".

From: YamahaYG68
Date: 05-Dec-18




The glass has almost a wood grain like look to it, its white but with a grain appearance. This is parallel to the limb length except where this feature is, which I refereed to as a pigment difference, which may not have been the best term to use.

This feature has been there quite a while and does not appear to be changing.

From: Mpdh Compton's Traditional Bowhunters
Date: 05-Dec-18




Looks like a scratch to me too. Where is it located on the limb? Anywhere near the fade out?

MP

From: YamahaYG68
Date: 05-Dec-18

YamahaYG68's embedded Photo



"Where is it located on the limb?"

Where the red cap on the string was tube is in the picture.

From: George D. Stout Compton's Traditional Bowhunters
Date: 05-Dec-18




You photo quality as a closeup doesn't show us much on screen. To me it looks like a scratch, but that could just be because I can't see it in enough detail. If you can't feel a crack with your fingernail, then I wouldn't be concerned.

From: YamahaYG68
Date: 05-Dec-18




It can be felt with a finger nail.

Perhaps the cup is in order ;)

Or shelve it.

From: Orion Professional Bowhunters Society - Qualified Member Compton's Traditional Bowhunters
Date: 05-Dec-18




Looks to me like something fell on/ hit it( or the limb was swung into something solid) and put a slight impression in the glass. Pretty common. I wouldn't worry about it.

From: Car54 Compton's Traditional Bowhunters
Date: 05-Dec-18




Cup check..LOL

From: fdp
Date: 05-Dec-18




I'm with Orion, I wouldn't give it a 2nd thought.

From: YamahaYG68
Date: 06-Dec-18




"I'm with Orion, I wouldn't give it a 2nd thought."

Update, I took a look at it under natural day light, using magnification.

I am beginning to think this is a finish flaw; it has been there for years and it has been shot quite a bit.

Under magnification, you can see the crack or ding in the finish. This is discolored with dirt from years of handling. The entire feature has the dirty appearance right out to the ends, there is no, new clean extension at either end.

I believe it was an actual crack, it would grow, showing new, clean, breakage lines at one, or both ends.

There are similar, smaller features in the finish of the bow in non-working areas.

I think I'll just shoot it and inspect it periodically.





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