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Date: Sat, 15 Apr 2006 20:33:23 -0400
From: John Slade <sladerj@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Typical EGT
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Rotarians,
When I installed my T04 turbo I must have damaged the EGT probe. I was 
seeing 500F on take-off. Today I installed a new probe and it looks like 
the new turbo runs a lot hotter than the old one. While installing the 
new probe I noticed that the ceramic coating on the turbo had turned to 
dust.

On take-off today I saw 1730 and the EGT alarm went off. I backed off 
the throttle and flew with it down around 1600, but that only gets me 
around 4500 rpm and zero boost. Bring it up to 5000 rpm and I see 1650. 
This is with the mixture a little higher than mid scale. Richen the 
mixture a tad and I can reduce EGT by 30 F or so. If I bring the rpm up 
to 5300 the EGT is up to 1700 pretty quickly. Oil and coolant temps are 
fine at around 180 - 190. I put 3.3 hours on the plane today with no 
other issues, but at 4500 rpm I don't get there very fast. :(

What do other rotary flyers consider max EGT, and what could be causing 
it to be so high (if this is really high)?
John
N96PM
60.5 Hrs.