Post by: Autumnarcher on February 05, 2021, 06:50:27 PM
Post by: EvilDogBeast on February 05, 2021, 06:58:10 PM
Alternatively, you could probably peel that strip of glass off and replace it without too much trouble. You would need to reverse engineer a form for it though.
Post by: Mad Max on February 05, 2021, 07:32:50 PM
I would take it out to shoot every now and then, Be sure to use a B-50 string to shoot with, so it doesn't hit brace so hard when you shoot. :thumbsup:
(https://i.imgur.com/hqPoNLL.jpg)
Post by: Crooked Stic on February 06, 2021, 10:22:37 AM
Post by: Mad Max on February 06, 2021, 12:52:11 PM
Post by: Stagmitis on February 06, 2021, 05:07:20 PM
Post by: Longcruise on February 06, 2021, 05:33:51 PM
Post by: Roy from Pa on February 06, 2021, 05:39:13 PM
What is that core lam in there, looks corrugated?
Post by: Stagmitis on February 06, 2021, 06:24:16 PM
Post by: Stagmitis on February 06, 2021, 06:25:24 PM
Post by: Longcruise on February 06, 2021, 06:36:10 PM
Post by: Roy from Pa on February 06, 2021, 07:00:56 PM
Post by: Longcruise on February 06, 2021, 08:45:11 PM
I never said that Mike:)
Oh sure, back out on me. :tongue:
Post by: Autumnarcher on February 06, 2021, 09:10:46 PM
Post by: stan v on October 06, 2022, 05:14:22 PM
However, I had the same issue on an American Archery Cheetah recurve I picked up last week. The tips on one end had been repaired before, the core looks fine. So, I cleaned up the area, heated a little to pull back the glass and recleaned/sanded and used epoxy to make the repair. Clamped overnite and didn't mess with it for 24 hrs. Just restrung after wrapping wool around the string to fit the limb grooves. Super quiet and no issues at this time. I will follow up should I see any issues with this repair. Other than the tip delam the bow is in excellent shape. If the core is in fact fine this should be a repair that lasts.
Just rechecked repair and noticed delamination below the repair, starting to come apart. It's not gonna work.
Post by: Jeff tech on October 06, 2022, 05:52:15 PM
Post by: stan v on October 06, 2022, 09:13:15 PM
I am looking for a bowyer that messes with these old bows, near Houston would be great.
Post by: Kirkll on October 06, 2022, 09:57:04 PM
Take my suggestion with a grain of salt, but I would clean up both surfaces and clamp it down with EA40 using a short mini form copied from the other end. When it's cured, clean it up and use the same mini form to clamp an overlay onto face side and fill the old string grooves at the same time. Shape and file new grooves.
I would 2nd this repair, only i dont think a form would be necessary. I'd just use some masking tape and spring clamps in about 3 locations. If you used small C clamps i would go real easy on the pressure applied. just enough to close the gap and hold it there.
Those Y shaped string groove are bad for doing that..... Stick with a single groove below the loop. Kirk
Post by: stan v on October 07, 2022, 03:04:04 AM
Take my suggestion with a grain of salt, but I would clean up both surfaces and clamp it down with EA40 using a short mini form copied from the other end. When it's cured, clean it up and use the same mini form to clamp an overlay onto face side and fill the old string grooves at the same time. Shape and file new grooves.
I would 2nd this repair, only i dont think a form would be necessary. I'd just use some masking tape and spring clamps in about 3 locations. If you used small C clamps i would go real easy on the pressure applied. just enough to close the gap and hold it there.
Those Y shaped string groove are bad for doing that..... Stick with a single groove below the loop. Kirk
Let me make sure, remove glass belly and clean up both core and glass, and reglue with enough pressure to avoid gaps? Fill y string groove. That pretty much it?
Post by: Kirkll on October 07, 2022, 10:51:41 AM
[ You are not allowed to view attachments ]
Note* if you mill that overlay at about ..60-.80 thick and feather sand it from .60 to nothing before you glue it on, its much easier to sand out a clean transition from the overlay to the glass. .02 worth Kirk
Post by: stan v on October 07, 2022, 11:02:47 AM
Post by: Buggs on October 07, 2022, 11:14:35 AM
Epoxy compatibility with a variety of old adhesives could be a problem.
Post by: stan v on October 07, 2022, 11:39:14 AM
Post by: Buggs on October 07, 2022, 12:37:44 PM
What did you use for epoxy on your repair?
You did not say if your bow has a split in the glass, like the OP's. Should be able to tell with some magnification.
If not, you might have a bigger problem. Like glue failure, if as you say the de-lamination is traveling down the limb.
Post by: stan v on October 07, 2022, 01:56:49 PM
You have any pictures Stan?
What did you use for epoxy on your repair?
You did not say if your bow has a split in the glass, like the OP's. Should be able to tell with some magnification.
If not, you might have a bigger problem. Like glue failure, if as you say the de-lamination is traveling down the limb.
And that's a concern I have with any repair at this point. I'm 50/50 to bite the bullet and give it a go by shipping it out and see what happens or trashing the whole thing. It just seems fixable to me. I have photos but havn't messed with posting them. If I do it'll be on another thread. I've torpedoed this one enough. :biglaugh:
I used gorilla 2 part 5 min epoxy. It's holding
Post by: Buggs on October 08, 2022, 08:54:22 AM
Still don't know if your bows glass fractured or splintered or just de-lam-ed?
Post by: stan v on October 08, 2022, 09:31:04 AM
Still don't know if your bows glass fractured or splintered or just de-lam-ed?
I'm not sure what's going on with the fiberglass. It appears to have delamed. I have another referral near Houston I've reached out to for an opinion on what's the best way to approach this problem. If he responds with an interest I'll take bow to him. I just started picking these old bows up and have a great desire to pass them on to grand kids. This is the only one (out of 6 purchased) that I've had any problem with at all.
Post by: Kirkll on October 08, 2022, 11:26:45 AM
From what I know, when it's on the belly side, it's an underlay. But yeah along with the rest, either heated and peel it off and re-glass it. It. Or glue it down and do an underlay. I would probably if I had the time and want to. Heated up and reglass the belly side. JF
Where on earth did you come up with that definition? An “Underlay” ??? The term underlayment is used as a flooring base used under carpet. Typically partial board. But I’ve never heard this term used in any other context.
regardless of which side of the limb or riser it goes on , belly or back, these are still overlays. :biglaugh: :biglaugh:
Now the layer below the overlay could be considered and underlayment I suppose….
I did not notice how old this thread was…. I wonder if he ever got it fixed and if it held up?
Post by: Kirkll on October 08, 2022, 09:29:50 PM
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I would not use EA-40 either, it's really thick and will not flow into tight spaces. A thin epoxy, heated and applied to a heated surface will naturally wick into any voids.
Hey Buggs, You would be surprised what you can do with EA 40 and a heat gun. That stuff thins down nicely with heat. i put my two parts in a microwave prior to mixing and it will liquify the resin in 15 seconds in the winter when its cold. i only use 10 seconds in the summer weather..... after mixing it, applying the heat strips in the form liquifies it again right before it starts to kick off.
granted.... a thinner epoxy has its place, and may be easier to use than EA 40....But for flexibility after curing smooth on is hard to beat. Kirk
Post by: Buggs on October 09, 2022, 12:03:05 AM
Post by: Kirkll on October 09, 2022, 12:18:34 AM
Post by: stan v on October 09, 2022, 08:14:59 AM
Then I can use the EA-40 to overlay the tips, correct? All this for a $150 bow!
Post by: Buggs on October 09, 2022, 11:14:00 AM
Then I can use the EA-40 to overlay the tips, correct? All this for a $150 bow!
Be a hell of a lot more if you have to pay someone to do the repair. :tongue:
Post by: Kirkll on October 09, 2022, 11:21:17 AM
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Then I can use the EA-40 to overlay the tips, correct? All this for a $150 bow!
You can use the EA 40 for replacing tip overlays too, but I prefer super glue for those. Mostly for easy of application.
But….You need not replace the tip overlays on that repair if you don’t want too. Just file the new grooves, and be sure and round them over nice and clean into the belly side of the limb. Kirk