Twenty years ago, I worked with a fellow who built aircraft engines.  He used a test bed of instrumentation and a "club-prop" which set in a cage. The engine was bolted to the aircraft just like being installed, aircraft tied down all around and his test bed instruments, all cylinder, exhaust, oil temp, fuel flow, etc. instrumentation hooked up and prop installed.  He would then break in engine running same.  He claimed he could also tell pretty much anything a person could by dyno-ing an engine simply by seeing what rpm, with what other details his instrumentation told him; so, maybe this is a good path to go down.  jofarr

----- Original Message ----- From: "Phil White" <philwhite9@aol.com>

Why not make a "chassis dyno" out of our fuselage?
   Install the engine with all its accessories and prop, cooling system,
etc.  Attach tail to your car/truck to prevent movement, place scales
under the main gear.  Have an assistant collect weight differential
readings at various rpm's.  With accurate measurement of the track
distance, the scale readings can be converted to ft-lbs of torque, and
horsepower calculated.

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