wrote:

I'm getting set to do the ground runs on my engine and intend to run
it throughout the summer at high power settings. I don't understand
people who just bolt an engine, any engine, to the airframe and then
try to go flying without any test runs.

Corky Scott

And don't just run it on the ground. You've got to instrument that
baby. Get a bunch of temperature probes and stick one to everything you
can. Add a handful of accelerometers to measure vibration at multiple
points if you can get your hands on them. I've read that the biggest
advances in aviation power during the second world war came about due to
improvements in instrumentation. It makes sense. You won't know what
to strengthen or cool if you don't know what's hot or under harmonic
vibrations.

Someone here mentioned an adjustable strobe light at night to look for
harmonics.


--
http://www.ernest.isa-geek.org/
"Ignorance is mankinds normal state,
alleviated by information and experience."
Veeduber