REFLECTOR: Oil Temps - Ground Ops

[Scott Baker]

Craig,
If you have a new engine, or a newly overhauled engine with new rings - higher oil temps are to be expected.
If you have a new engine, or a newly overhauled engine with new rings, one sure way to glaze the cylinders is to spend time on the ground at low power settings - 
Engine manufacturers and mechanics recommend the aircraft be run a very high power settings as soon as possible in order to promote the best "breaking in" of the engine.
SB

  ----- Original Message ----- 
  From: Craig and/or Denise Woolston 
  To: 'Velocity Aircraft Owners and Builders list' 
  Sent: Monday, August 21, 2006 11:55 PM
  Subject: REFLECTOR: Oil Temps - Ground Ops


  John and I are starting to get real data from taxing around.  Wanted to bounce some numbers off the "collectively wisdom".

   

  With an OAT of 103 deg F we got oil temps to around 230 after, 10 minutes of taxing, one long runup and 40 knot taxi test down the runway.  We then went to the compass rose and sat for about 1-2 minutes before we shutdown.

   

  We then swung the compass for about 30 minutes, restarted, taxi back down, another long runup, 40 knot taxi test on the runway, taxied back to the hanger and we were at 220 deg F.

   

  CHTs never went above 350 deg F, most were in the high 200s for the idling parts.

   

  We have an IO-550 with the stock cooler on the engine (no ducting) and the standard nose cooler.

   

  Comments?

   

  Craig

  XL-5FG, Palmdale, CA

   



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


  _______________________________________________
  To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

  Visit the gallery!  www.tvbf.org/gallery
  user:pw   Check new archives: www.tvbf.org/pipermail
  Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tvbf.org/mailman/private/reflector/attachments/20060822/fe59e290/attachment-0001.htm