I'm sure you are right Bill, that engine had to be a real job to
tune. Dave's (can't remember last name right now) twin rotary engine Reno
racer used that system as well and it took the skills of an expert to do
it. I watched Roger Mandeville work for a long time to get it even
close. And the tune-up was only good for a short
time. A small drift in conditions or sensor calibration
would screw it up again.
Tracy
Ed,
That is interesting. Many people talk about the third plug, but
that was only for efficiency. The engine was built to run durring a efficiency
formula. (That had a max amount of fuel available for the race) They must have
worked very hard to map that engine if they ran alpha-N!
Bill Jepson
Subject: [FlyRotary] R-26B 4 Rotor Air
Measurement Approach
Bill, the R-26B engine used the a-N method to measure
intake air amount using throttle opening and engine speed as
parameters.
Ed