OS140RX Bearings

Ed Miller edbon85 at charter.net
Mon Jun 20 10:25:02 AKDT 2005


Dave Funk tried this a couple of years ago, Boca stainless bearing which he removed the seals from and it did not last long. He then installed the Boca stainless bearing as it came with the seals intact and it is fine to this day. I too installed the Boca stainless bearing with the seals intact and have had no problems. 
Ed M.
  ----- Original Message ----- 
  From: RCSkyraidr at aol.com 
  To: discussion at nsrca.org 
  Sent: Monday, June 20, 2005 10:28 AM
  Subject: Re: OS140RX Bearings


  Just last weekend, I finally had to replace the Boca SS bearings that I put into my OS 1.40 RX before the engine was ever run. I noticed the bearing roughness after flight number 431. Based on advice from so many Pattern pilots, I never even tried the stock bearings.

  The fuel was 15% Magnum and the engine was run dry after every session. I used Mobil 1 as an after run oil each time. The rear bearing had both seals removed and the front bearing had the rear seal removed but kept the front seal of course. The front bearing seal was metal, not rubber so I don't know if Mobil 1 would affect rubber.

  Regards,
  Frank Granelli
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