VO wrote:

I believe it was cause by different problem, not by detonation/leaning.
In case detonation/leaning you should see symptoms on all engine
almost equally, of course if ignition and injection system works same.

Tension bolts shearing and rotation of front housing it could be connected
with transmission torsion against engine, where middle housing was
hold against car frame.

Vlad

N1UT - Velocity Elite, RG, Mazda 20B rotary, NA - in progress
http://www.N1UT.velocity-air.com

My experience with boosted rotaries is that it is the rear rotor that detonates
first, probably because it runs hotter.  Do not know if this applies to the NA
wankels.

Hans

The leaning I was referring to was at altitude and low power. Tracy Crook and Klause
have both been experimenting with this. Klause runs his O-200 100 degrees
lean of peak EGT. He claims a good ignition system can fire this reliably.
Perhaps you can fill us in Tracy.

I have no doubt under high boost a lean condition can cause detonation.

Paul Lamar
 
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