[hsk808]

I recently bought a Bear Resurgence. While setting it up I wasn't able to tune out a tail left tear. My whisker biscuit and drop away rests both produced the same results. Then I noticed that the limbs were significantly offset. I took a picture with a couple of straight edges (arrows in this case) against the riser to illustrate. You can compare the yellow lines which are parallel with the riser edges and centerline with the light blue lines drawn between the inside edges of the limbs. The yellow lines are parallel. It's just the camera angle that's making them look like they're not, but they do provide a necessary reference point. I estimate that this limb offset is causing the string to sit about 1/4" to the right of where it should be.

I tried to fix this by backing out the limb bolts until the cables were loose and removed the cable guard and slide. Then I straightened out the limbs and tightened the limb bolts to about 40lbs. I reattached the cable guard and slide, increased to 50lbs and verified that the limbs were still straight. My first shot through paper was nearly a bullet hole. The second shot was tail left by half an inch. With subsequent shots I'm back to the persistent 1" tail left tear. The limbs moved back into the original offset position to the right; the obvious cause being the force generated by the cables from the slide/guard.

Does anyone know a remedy for the slop in the limb bolt/cup/pocket? There's just enough play in the system on this bow that allows the limbs to be pulled to the side by the cables and sit crooked. The bow is certainly shootable, but that tail left tear is super-irritating! I want bullet holes, lol! Any help would be greatly appreciated. Thank you!

P.S. I'm pretty good at tuning binary cam bows. I've owned five so far and have never had a problem getting bullet holes with any of them. Thanks again!

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[Swampwise]

Check limb pockets for a missing part.
Post pics from underneath and front without the added lines.

 

[hsk808]

The limb pockets look OK.

 

[hsk808]

 

[hsk808]

 

[hsk808]

I found the source of misalignment in the limb pocket. The hole for the limb bolt is quite large and allows the entire limb pocket to move laterally and tilt:

The limb pocket is supposed to be held securely centered by the limb bolt and cups, but the cups are made of plastic and I'm guessing that they compress under load, allowing the pocket to tilt and be pushed off center. These next photos confirm that the limb bolt is contacting one side of the hole in the pocket and not the other. :

Are there any Bear engineers here? As a quick fix, I'd be interested to see if a steel sleeve on the limb bolt could fill in this gap and eliminate the lateral movement and tilt. With a little work, I bet this bow could shoot on par with any flagship level bow with similar geometry. I still think it's one of the best bang for your buck bows available.

Ultimately though, it would be really good to develop a large metal T-shaped limb bolt cup that allows the limb pocket to rock but not tilt laterally. This could potentially keep production costs low while increasing precision greatly. Bear Archery, are you listening? I'd be happy to draw up some prototypes and 3D print them for you...

 

[Ledbeter]

Have you tried using your yokes to tune cam lean to correct your tear? I have a resurgence and it’s as accurate as my Hoyt ventum pro long as I shoot it just as well. You might be looking in the wrong place maybe not but did you try to yoke tune?

 

[hsk808]

Thank you for the suggestion. I've had to yoke tune my other bows, but I want to get the limbs aligned properly on this bow first. It's kind of like if your car was in a major accident and it pulls to the right. You could get an alignment done to see if you can get it tracking straight, but you won't be happy with that when you know the suspension is tweaked and the frame needs to be pulled.

Anyway, I'm engineering a solution that will hopefully align the limb pockets properly. It's basically a 3D printed block that controls the gap on both sides between the limb pocket and riser. Unfortunately If I ever want to go up or down in poundage I'll have to print different dimension blocks for each poundage setting. I don't mind this if it gives me the precision I'm looking for though. I'll post pics and results once complete.

 

[Ledbeter]

Good luck, I think you might be chasing something that isn’t going to make a difference. If this truly does affect the way I shoots then I would have bear fix or replace it they have a very good warranty. But if you want to do this then more power to you. Sometimes good things come from experimenting. Also this is not a binary cam bow it’s a hybrid. It does not tune like a binary. It is meant to have cam lean to tune the tear.

 

[hsk808]

You are probably right, Ledbeter. I sent them pictures and Bear has offered to repair the bow. The top cam is so far from where it should be that I don't really want to do anything until this is fixed. I took this picture with the camera lined up with the center plane of the riser:

The cam is offset by about 3/16" but you can see that the back part of the cam lines up almost perfectly with the center of the riser. If I were to adjust the cam lean with the yoke to get the string aligned within spec centershot, the cam would lean away from the cable rest! I'm almost certain that would cause the string to derail.

I'm waiting to hear back from Bear to see what the shipping charges will be.

 

[Ledbeter]

Yeah i would let bear have a go at repairing that for sure. Honestly cam lean is weird. One of my bows likes a lot of lean at rest to tune. But when you check the lean at full draw it’s not much. Hope they get you squared away. They are usually pretty good to deal with. I’m curious how big is your tear? If it’s a nock left tear you should be putting twist in the left side to lean the cam. I would forget about it being centered at rest this means nothing on a hybrid bow. They are meant to have cam lean at rest what matters is what it’s doing at full draw. I would just try this to see if it works. Set your rest at 13/16 to the center of the arrow. Make sure cams are in time or the top slightly advanced. Mine like very slightly advanced but your may not. Paper shoot. Fix up and down first ignore left and right. Once you get up and down and you have your left tear. Add a twist in the left yoke and take one out of the right. Shoot again if tear gets better keep going until tear is gone or it starts tearing right then go back half a twist and fine tune rest left right for the last bit. If you can’t tune out the tear like that then your bow definitely has a issue. I took a look at a few different bear bows I have around and two of them look like they have a little offset like yours but they all tune. But I’d give this a shot just to see. I’m not saying you don’t know how to tune and I don’t know everything you’ve done but if you haven’t tried this I would just to see.

 

[Natecotterman]

You are probably right, Ledbeter. I sent them pictures and Bear has offered to repair the bow. The top cam is so far from where it should be that I don't really want to do anything until this is fixed. I took this picture with the camera lined up with the center plane of the riser:
View attachment 7626020

The cam is offset by about 3/16" but you can see that the back part of the cam lines up almost perfectly with the center of the riser. If I were to adjust the cam lean with the yoke to get the string aligned within spec centershot, the cam would lean away from the cable rest! I'm almost certain that would cause the string to derail.

I'm waiting to hear back from Bear to see what the shipping charges will be.

Did you ever get this sorted. I have an Alaskan I’m ready to thrown in he trash because of a left tear i cannot remedy. I can yoke tune it out in paper but down range my arrows are fly all over the place.

 

[masseurj]

I have a resurgence that has snapped 2 strings and now have a cracked limb the bow is only 5 months old. It shotos great at first but maybe 50 arrows in it starts falling apart. Piece of trash. I shot my last bow over 500 arrows a week and put it through he'll and back never once did anything like this happen. I dont have alot of money and archery has become a life saver in this crazy time. I try to step up to a better set up with this resurgence bow and can't keep it one piece for more then A couple days. Ive never in my life dealt with anything like this. Dont buy the resurgence. This one is a day away from the trash can. It would already be there if it wasn't for the fact that it will take me months to afford to replace it .