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[Bill Glaze]

Hi, Georgie
Doubt that the problem is caused by side mounting.  I've got several Y.S.
engines from .53 to 1.40 side mounted, and never a problem.  Are you doing
some particular maneuver when it quits?  Does it seem to go rich or lean?
Any other symptoms?

Bill Glaze

george kennie wrote:

> Hey Guys,
> Need a little help here. I have a YS-63 mounted in a profile airplane.It
> will run out a whole tank of fuel on the ground turning a 12X6 APC at
> 12000 RPM with no apparent problems, but take-off and I can only get a
> couple of passes before it flames out. I'm running 20/20 Powermaster and
> I changed the OS-F plug with no improvement.The clunk is not hitting the
> back of the tank.
> I think I remember something on the list about a year ago about YS
> four-strokes not liking side mounting and that a modification was
> required to the throttle barrel or something like that. Can somebody
> enlighten me or make suggestions.
> Thanks
> Georgie
>
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