Seen 5 of them crack and 2 shatter.
The 216 belt wears the sheaves and it all comes apart.
The 216 belt wears the sheaves and it all comes apart.
Check your 850 secondaries……
- Thread starter Sheetmetalfab
- Start date
U
Wtf any pics I just had mine apart can’t say I was looking for cracks though
M
3000k on this one, I believe it was heat issue, probably from misaligned clutches. 21’ 850 khoas
M
3k miles not 3000k ?
That a factory balancing cut? Usually they round and not on the edge like that.
M
Look like that clutch has been lightened?
M
Yeah, Patrick’s. I had a long conversation with him about it. He hasn’t seen that failure before ?
Clutch had 2k miles stock and 1k miles lightened.
Clutch had 2k miles stock and 1k miles lightened.
This pics are very telling
Ehhh I'd be asking Patrick's why the crack went from their balancing mark, to their balancing mark... Might have gotten a bit aggressive with the "lightening" part of things...
S
That crack originated from the drill hole. If you look close another crack is also coming from one of the other drill holes. I worked in the airplane jungle Everett Washington for 35 years. The way they did the balance holes is a totally unacceptable on any part of an airplane. The sharp edge in the bottom corner of the hole should have a radius.
I would never send Patrick one my clutches
Crack very clearly starts at the corner of the sharp notch...which creates huge stress risers/concentrations and will initiate a crack. You can see the major failure/crack and you can also see a small crack starting right next to it.
A round drilled hole is much stronger and less likely to start a crack like that. And, yes, thermal and physical stress (both the same technically) will initiate cracks in notches like that.
Bad design.
A round drilled hole is much stronger and less likely to start a crack like that. And, yes, thermal and physical stress (both the same technically) will initiate cracks in notches like that.
Bad design.
C
Do you recommend a different belt?
I’ve only seen oem and the the gboost belt run in our group. (It didn’t last long)
Oem 216 just lasts forever. ??
Spare $40 secondaries from eBay have been working fine.
C
What sort of mileage is it happening at? I have 600 with oem and 450 with c12 gatesI’ve only seen oem and the the gboost belt run in our group. (It didn’t last long)
Oem 216 just lasts forever. ??
Spare $40 secondaries from eBay have been working fine.
Yeah what he said. Seems like the fault line is staring right in their face.
