O.S. 1.4 RX bearings

[Dave Smith]

Verne:   Based on my experience with the YS .60 & .61 two strokes,the grease will disappear very soon,even with two seals intact. 
I don't think lubrication is the problem,or the cure.  The rear bearing is just too small.

It seems this size bearing started out in life as the bearing for the 1.08.   It makes no sense to me that a bearing for a rather mild 1.08 would stand up to the rigors of a 1.40.

Good luck,,,,,,,,,,,,,Dave
  ----- Original Message ----- 
  From: Verne Koester 
  To: NSRCA 
  Sent: Friday, July 04, 2003 4:03 PM
  Subject: O.S. 1.4 RX bearings


  Anybody out there try running the O.S. 1.4RX rear bearing with the shields intact? It seems to me that the design doesn't allow enough oil to get to the bearing. Keeping the case cool would help matters but I'm not sure it's the total or only solution to the bearing life problems. Seems like I read where the EFI version uses a stainless bearing with seals. If so, they'd obviously have to be packed with grease like the front bearing and from what I've read on this list, the front bearing never seems to wear out. Granted, it doesn't take the pounding experienced by the rear bearing, but it should be getting very nearly as hot. Maybe the trick is using a sealed bearing packed with grease? I'm going to give it a try and I'll keep ya posted.

  Verne
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