Ugh just great

Crossbow Hunting

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mr meat
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Re: Ugh just great

Post by mr meat »

I'm just around the corner if ya need a bow to!
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Riflemanz
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Re: Ugh just great

Post by Riflemanz »

one shot scott wrote:Mattones, I see your in 87 as well. If you need a loaner bow let me know, I have 3 x cals. Can drop one off tonight so u don't miss much of the long weekend
We really have some good people on this web site! :mrgreen:
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BrotherRon
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Re: Ugh just great

Post by BrotherRon »

Yes, this is a great site... everyone willing to help others in any way they can ;)
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mattones
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Re: Ugh just great

Post by mattones »

mr meat wrote:I'm just around the corner if ya need a bow to!
That you are. :D
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mmc
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Re: Ugh just great

Post by mmc »

Your riser has excessive camo coating inside the limb sockets on each side of the limb supports that capture and support the limb vertically. There are four locations within the limb socket where excessive camo coatings affect an overly tight limb fit. The pinch area causing your limb failure is on each side of the limb below the recoil clamps. You'll likely find that there are chamfers machined into those sockets as well, that are now filled with coating material and so no longer performing as designed.

When the limbs were installed it was done forcefully by pulling them down into the pinching sockets with the limb bolts. Doing so causes the limb sockets to cut and bust open the sides of the limbs and cut through those fibers, weakening each limb in that area where they are the thickest and strongest.

My M380 was like that, but I fully disassembled my package as soon as it arrived and the limb pinching problem was discovered and fixed long before I ever assembled and shot it. I sealed up the limb damage too and never had a problem with them until a limb tip came loose (unrelated of course) a year later. I have photos somewhere of the damage I found on my pinched limbs. I have photos of the necessary corrections I performed on my limb sockets as well. But displaying them in public is probably not a good idea because very few people have the necessary measuring tools, fixtures etc. to insure proper limb alignment is maintained as excessive camo material is carefully removed. I also used a unique protective seal coating on my limb sockets only, that I doubt many have on hand.

The fit is intended to be firm and precise. Limbs should not ever be altered in any way, as that is not part of, or causal of any problem. For the record, those limb sockets as measured on my 380 are machined at precise angles. Don't alter them ever.

I would ask Excalibur to perform the necessary custom fitting of new limbs if I were you. There is nothing wrong with the design of the riser or with the limbs. It is a simple over-application of camo goo in the worst possible spot for that to happen.

Good hunting,
Current interest: VPA non-vented 125gr, 150gr, 175gr broadhead flight for long range
foofoo
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Re: Ugh just great

Post by foofoo »

just a thought. did you tighten the recoil plates yourself. im thinking if they get overtightened the plate acts like a pinch point. i leave mine barely snug with the rubber gasket just about squashed. also ive always wondered with the string stops located directly behind the recoil plates the shock gets transfered to that part of the limb. just a theory.
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mmc
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Re: Ugh just great

Post by mmc »

foofoo wrote:just a thought. did you tighten the recoil plates yourself. im thinking if they get overtightened the plate acts like a pinch point. i leave mine barely snug with the rubber gasket just about squashed. also ive always wondered with the string stops located directly behind the recoil plates the shock gets transfered to that part of the limb. just a theory.
The recoil clamps cannot cut the limbs, they only secure them from unintended movement. The limb sockets on the riser (at four locations within each socket) cut into the lower limb edges as the limb bolts are drawn down, cutting limb fibers and opening wounds in each limb that continue to expand until they eventually fail.

If a person must force the limbs down into the riser sockets using the limb bolts during installation, they are cutting those limbs open on each edge. A proper firm and precise fit requires no excessive force, and so damage cannot occur. The limbs should last for many, many years if installed properly.

This problem is caused by an accidental over-application of camo coating goo in the limb sockets. Its easy to correct, but I don't advise anyone to attempt to fix their own riser because those sockets are precisely machined and accuracy can be quickly destroyed by carelessness or lack of skills, proper measuring tools and experience working with precision components.
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fratri
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Re: Ugh just great

Post by fratri »

That really sucks Matt, must have been very disappointing.... I too have a back up excal, exocet 200 if you want to use it. We are fairly close as well. I hope they solve the problem because we need confidence in our hunting equipment.
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janesy
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Re: Ugh just great

Post by janesy »

Oops sorry, wrong post
.
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sproulman
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Re: Ugh just great

Post by sproulman »

My 2 micro 335 have the air brakes installed ..I believe they do take shock out of limbs etc ..Maybe having air brakes on is good idea?
mattones
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Re: Ugh just great

Post by mattones »

Just took the limbs off I added pictures to the first post :) the one plastic shim is toast. The other limb looks in OK shape
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ihunt
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Re: Ugh just great

Post by ihunt »

Hopefully my Mirco never do that? If so, I'd call Excalibur and tell them to fix it if they don't then it goes in the garbage and I'll never buy their products again, period.
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sproulman
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Re: Ugh just great

Post by sproulman »

mattones wrote:Just took the limbs off I added pictures to the first post :) the one plastic shim is toast. The other limb looks in OK shape
2 i saw bro same place gen 1 micro 335 using 350 gr arrows and both had less than 20 shots on bows.3 others gen 1 two with airbakes and 1 without with air brakes no problems but using 400/420 gr arrows 2 with 100 shots ....
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robertyb
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Re: Ugh just great

Post by robertyb »

I bought a Matrix 330 used off a dealer on another forum and a few months later while shooting it I thought I heard a crack so I pulled the limbs and the right one was starting to crack in the same place from the bottom of the limb. Sent them to Danny Miller and got new limbs and all is well with several hundreds of shots on the new limbs.
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foofoo
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Re: Ugh just great

Post by foofoo »

i know we can be passionate about our theories but i didnt say the recoil plates cut the limb :roll: the recoil plates job is to cushion the limb and to minimize overtravel of the limb after firing. when you honk down on those plates youve changed the stress points.for a limb to take full advatage of its power the length is crucial. tighten down too much on those recoil plates and youve just shortened the the length of the working limb.now the plates are acting more like the main limb bolt. the Micro doesnt have a dipped painted riser so having too much coating has nothing to do with no enough room. in fact most of my experience fitting limbs has found plenty of wiggle room in the limb to riser pocket fit.I had an issue with my first GEN limbs and replaced them with no issues in 2 years. a little birdie indicated to me that many of the issues that year showed up at the recoil plates but on the back side of the limbs. since ive had no issues the cooked limb theory i will have to go by. I LOVE MY GEN 1. :mrgreen:
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