RCU Forums - View Single Post - 26GT2 lagging at top end
Thread: 26GT2 lagging at top end
View Single Post
Old 11-10-2007 | 06:55 PM
  #3  
pe reivers
Senior Member
 
Joined: Jan 2002
Posts: 6,571
Likes: 0
Received 5 Likes on 5 Posts
From: Arcen, , NETHERLANDS
Default RE: 26GT2 lagging at top end

ORIGINAL: dupuisma

I've got a new 26GT2. I've completed the break in w/ 30:1 per the manual and I've run about 400ml of 40:1 fuel so far. Low end setting seems right, high end is set for max rpm per PRME instructions, and ignition is per spec.
I am only getting about 5200 rpm on a Zinger 18x12 in a pusher configuration at WOT. I know this is a little more prop than recommended. Even so, 5200 is only about 1.0 HP on the MVVS prop power calculator.
Any suggestions?
Nothng much to add!
At these prop loads, the engine is strangled without any cooling. 18x10 already is a heavy load, 18x8 is OK, but in a pusher cooling is an issue that needs utmost attention and constant monitoring.
What are your cylinder top temperatures in flight?
pe reivers is offline  
Reply Like