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That's interesting, Rusty
I have noticed that my coolant temp is up and my EGT is down (about 100 -
150F) over the old engine. I am speculating that the rise in coolant temp
and decrease in EGT MAY be due to better combustion (less blow-by of gas into
the exhaust) - but a little early to tell. Once the engine has about 10
flying hours on it, the status should stabilize. The coolant temp has come
down about 5 -10F over what it was when I initially fired up the engine.
I hate to think that much heat increase is due to the friction of breaking
in all the seals. I am trying something different this time, I am breaking
the engine in using Mobile 1 Synthetic oil rather than the mineral oil as I did
previously.
Went to auto store to see if I could find a S&B filter - they once had
them, but had stopped carrying them. Claimed they were good filters.
Was going to check for me and see if anyone else in the local area carried
them. Might just end up with a K&N as they are probably easier to find
almost anywhere. But, I liked the funnel shaped inlet to the TB that the
S&B had and the K&N did not. Got to get that filter on before Leon
gets on my case {:>)
Hope your water is going down
Ed
----- Original Message -----
Sent: Monday, May 02, 2005 9:36 PM
Subject: [FlyRotary] Re: Renesis Build
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Bill, not quite certain how it do that. I can understand that the
rotor being coated would tend to lessen the amount of heat the rotor would
absorb and therefore keep the temp of the oil ,which cools the rotor,
down. But, it then seems that heat has to go/do something. I agree
there should be some increase in overall efficiency by keeping the temperature
of the combustion chamber elevated. However, I believe that heat has to
go somewhere and I think you would see a rise in coolant
temps.
Interesting
thought. Two things have happened with the recent engine, one
of which I've only mentioned to Tracy. First, the low oil temp, but
that's only partially due to the ceramic coating. The other is a rise in
EGT's. I've had a problem keeping EGT's below 1750 in climb since
the rebuild. It never dawned on me that some of this might be due to
heat that didn't go into the oil. Hmmmmm
As for the
balancing, I already chimed in on that over the backwards plastic plane
site. I've heard tale that the Renesis rotors aren't nearly as
consistent as the 13B rotors were in weight. I know that Bruce was
not really suggesting balancing in the past, but maybe the Renesis
can make better use of a balancing job. Mind you this is pure
speculation. For $350, and no inconvenience, there's no doubt
I'd get any engine balanced.
Cheers,
Rusty
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