Gary C. Buster LPT wrote:

Oops... Paul, I've got some real time, first hand, objective data to report
on this topic...

The gyro was running a consistent 205-210F average with the previous pulley
at 7000 rpm.... now I am typically able to keep it around 195 with the same
settings except for a smaller crankshaft pulley and a larger alternator
pulley... the H20 pulley remained the same, just rolling over slower due to
changing the driver pulley to a smaller diameter (Atkins).

The local flying environment is actually harsher recently with the local
heat at 104 and a heat index (with humidity) at 115F.

These flights were conducted with full gross and flying behind the power
curve pushing the engine at 7K WOT around the patch x 40 minutes!!!

Needless to say, I am pleased with the changes that have resulted in the
current configuration.

N263GB (November Too Sexy Golf Bravo!!!)

Gary C. Buster LPT
gbuster@ballistic.com
Tyler, Texas   

BTW I would like to mention something here about thick verses thin
radiators. They don't call them radiators for nothing. There are at
least
two forms of heat transfer. Radiation and conduction. Back in the
old days when people heated their houses with hot water there were
RADIATORS in every room. There were no fans on these radiators. How
these
things heated the room was partly and maybe mostly by RADIATION duh!
Any conduction taking place was by heated air at the bottom of the 
radiator rising and absorbing heat on the way up through the radiator.

A large area thin radiator will RADIATE more heat than a small area
thick core heat exchanger. this could possible explain why Jim Mosur's
and other large area relatively thin radiators are working so well.
 
Paul Lamar
 
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