Ken,
> The throttle lines are as they have been for four years and 430
> hours. I do not have a stop for the 100 percent power
So the throttle cables are ruled out.
Nevertheless, the absence of the required 100% gate reminds me of what I
have seen happen on a few occasions : when advancing the throttle at
takeoff, the pilot fails to push it all the way, at leaves it in the
100-115 % sector where Rotax advises that turbo operation is instable.
And indeed, the result was "attention getting" power surges ;-)
Could this have happened ?
> but have a manifold guage which I did not look at.
Too bad, as the reading could have helped discriminate between
governor/prop and engine trouble.
It is good practice to monitor the two gauges during the takeoff run : I
always make sure the RPM are 5800, and manifold pressure 39.9 in Hg.
Some pilots reported a stuck waste gate, or a runaway prop governor.
All the best with your investigations,
Best regards,
Gilles
http://contrails.free.fr
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