Brian,


This is from the manual for Super Tigre engines:
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The ABC engine break-in process is similar to the ringed engine break-in
process with one major difference:ABC engines are not run as rich
as ringed engines in the early process.
Choke and start your SuperTigre ABC engine in the same manner as
detailed above in the Initial Running and Break-in (Ringed Engine).
Let it warm up for 30 seconds,and then advance the throttle to full. Now
slowly lean the high-speed needle while you listen to the engine. As you
lean the needle, you will hear the engine increase in RPM. At some
point, you will hear the engine sound like it’s jumping up and down in
RPM.The exhaust sound will be jumping up and down in pitch. You want
to continue to lean the engine until it’s running mostly at the higher-pitch
sound, with just an occasional break to the lower sound. Let the engine
run at this setting for five minutes.

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If the ABC engine will sustain no (?) damage from being broken-in as rich as a ringed piston engine, why do you suppose Super-Tigre tells the user to do the break-in less rich; just lean of the point where it breaks into a two-cycle (with occasional four-cycle 'burping')?


Since you are out to fail the method I described in my thread; to bust "myths", are you sure you can be completely objective as to the final results?

Do you think your testing on two examples of one cheap engine, from 'you know where' will produce results that can be trusted?

This goes for both negative and positive results, of-course.