[NSRCA-discussion] OS 120 AX

[John Pavlick]

Bob,
 How much time is on it? We've had a few around here that ate the rear bearing in 50 - 100 flights. One of them ended up ruining the sleeve too (bearing debris). The solution is to replace the rear bearing with an OS 140Rx F.I. (sealed) bearing before it gets bad enough to cause other damage. The front bearing is a double sealed type already so you won't need to change that one. This is a really good running motor when you get the bearing thing straightened out.

John Pavlick
http://www.idseng.com
  ----- Original Message ----- 
  From: Bob Richards 
  To: NSRCA Mailing List 
  Sent: Monday, September 03, 2007 8:35 AM
  Subject: [NSRCA-discussion] OS 120 AX


  I acquired a plane with an OS 120AX installed, and seem to be having some issues with it. It came with an APC 16x8 prop and stock muffler. Is not running as well as I think it should, but I did figure out I had some bad fuel. I plan to go out again today and tinker with it some more.

  What fuel, prop, and what rpm figures should I be seeing?

  Thanks in advance.

  Bob R.



------------------------------------------------------------------------------


  _______________________________________________
  NSRCA-discussion mailing list
  NSRCA-discussion at lists.nsrca.org
  http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20070904/c0cc76e0/attachment.html