Rotax RPMs

On Thu, 29 Nov 2007 21:47:23 +0000 (UTC), (Paul
Tomblin) wrote:

In a previous article, said:
A quick Google search yielded this info on the engine used in the
Remos:

http://www.rotaxservice.com/rotax_en...ax_912ULSs.htm

Ok, I'm a little embarassed that I couldn't find that info myself.

Is a reduction gearbox seen as a reliability problem, or isn't that such a
big deal any more?

I've run some accident analyses of homebuilts using alternate engines. Out of
~95 homebuilts with Rotax four-strokes that had accidents during 1998-2004,
about 14% of them were due to some sort of mechanical problem with the
powerplant. None of them were due to failures of the gearbox.

BTW, that 14% is about the same as conventional engines....

Ron Wanttaja