BEARING COLLAPSE

This topic has 10 replies, 5 voices, and was last updated 12 years, 6 months ago by Walt Gifford.

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- February 13, 2014 at 7:39 pm #21992
  
  Glenn L Riggs
  Participant
  
  I had a batch of fag 6205 shifter bearings that would fail the same way. They are good bearings but made in different countries forgot which country I had the problem ones. Maybe this might help. also have to watch endplay if slightly tight heats up and melts the plastic part. Hope this may help
- February 14, 2014 at 9:23 am #22024
  
  Walt Gifford
  Participant
  
  Go to full compliment.
  
  Gif
- February 14, 2014 at 10:46 am #22030
  
  Jim Silverheels
  Participant
  
  Giff, where do I buy them please? Full comp means more rollers? not really up on that term, thanks
  - February 18, 2014 at 11:25 am #22209
    
    Jim Gerard
    Participant
    
    I would be interested in trading some parts for dyno time if your interested.
- February 18, 2014 at 11:52 am #22218
  
  Walt Gifford
  Participant
  
  It’s like all star wrestling all balls no cage. lol, I think you have to make them, that’s what I did.
  
  Gif
- February 18, 2014 at 1:35 pm #22235
  
  Jim Silverheels
  Participant
  
  Giff, I did check this out with my guru from Plattsburgh Ny and he made a point. Take the cage out and add balls would make more friction with ball rubbing on ball. Now that’s a ball of a deal like Mr Gerard wants, sure Sunday will be fine but early. Daytona comes on at 1pm.
- February 18, 2014 at 3:18 pm #22239
  
  Walt Gifford
  Participant
  
  Your guru needs more meditation. The balls rotate in their own spaces. If you’ve blown 50 engines I’d try something different.
  
  Gif
- February 18, 2014 at 3:40 pm #22241
  
  Jim Russell, Jr
  Participant
  
  Check your seals. Leaking seals can cause loss of lubrication and hot spots. Then the bearing fails.
  
  Otherwise it could be a bad batch of separator material.
  
  We have had the best luck with the SKF bearings.
  
  Jim jr.
- February 18, 2014 at 5:59 pm #22247
  
  Jim Silverheels
  Participant
  
  Giff, with no cage your saying they don’t touch? c’mon
  
  Mr Russell, the seals were new, the axial clearance was .012,balls inward, and crank dead nuts. thanks for the input
- February 20, 2014 at 10:35 am #22348
  
  Walt Gifford
  Participant
  
  After installation and the cases cool, can you feel some play on the inner race? Are you using C4 fit? When you put the bearing in do you weight it down with a big aluminum block to keep the bearing cool and seated? The hot case can push the bearing up. There is supposed to be a hole that connects the transfer passage with the space between the bearing and the crank seal, is it open? This draws lube through the bearing from differential of pressures. After you run it on track does it still have end play in the crank? The bearings could be drifting out of the pockets. Do you have a bent axle or sprocket that could be jerking the engine shaft, does your chain pulsate are your tires balanced, frame cracked? Pull the spark plug and crank the motor over fast and listen for any metallic clank, piston hitting something. Does the piston twist going up and down? Sorry for the unicorns I ran out of zebras.
  
  Gif
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