Counting engine running time

by Paul Andersén in 912 / 914 Technical Questions 13 years ago

Anyone who know were to attach an hourmeter on 912 ULS.
We now have it connected to the master switch and would like just to count when engine is running

Regards from Sweden
Paul AndersÃ©n

Re: Counting engine running time

by Kevin Stewart » 13 years ago

Kevin Stewart

5 184 0

There is some useful info here:

http://www.rotax-owner.com/forum/4-general-discussion/63-hour-meter-type#99

Hope that helps.

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Re: Counting engine running time

by Roger Lee » 13 years ago

Roger Lee

125 5.12k 4.53k

Hobbs time is a better measure of actual engine time. An hour meter is usually around 20% off as it may vary with engine rpm. Runs slower at idle and faster at higher throttle settings. Hobbs time should be more accurate because it should be setup to read when the engine develops 15 psi or more and runs constant.

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

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Counting engine running time

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