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lean adjustment for cruise at altitude

by John McClintock in 912 / 914 Technical Questions 13 years ago

apparently there is a lean adjustment device available or being used on 912's, does anyone have more info

Re: lean adjustment for cruise at altitude

by Roger Lee » 13 years ago

Roger Lee

125 5.11k 4.52k

I don't mean to be a kill joy here, but...

There is such a device, but not many have been happy after they use use it a while and you may cost yourself some real money if you experiment and damage your engine. Your engine and if set up correctly with the prop will fly to 16K+. I know people who are well past the + side. I don't see a reason to mess with that since most of us don't fly there normally anyway. This is one of those times that leaving well enough alone may be the better choice.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Thank you said by: Jez O'Hare

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Re: lean adjustment for cruise at altitude

by Malcolm Ferguson » 13 years ago

Malcolm Ferguson

0 1 0

John,

I fitted a leaning device to my 912ULS a year ago. Start to be beneficial above 7000'. At 9500' by leaning I pickup another 100-125 revs and EGT another 100+ degrees C. It runs very rich at that altitude. Only monitor this forum monthly.

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