Depending on your rpm (too low) the drop could be very smooth and maybe not even noticed. Some instruments are better at picking up the rpm drop too. What I mean is some tachs are a little more responsive. All engines don't have the same mag drop, yours just may be one with a smaller drop than someone else. Try a little higher rpm for the mag drop check and see if that helps.
Roger Lee LSRM-A & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield (KRYN) 520-349-7056 Cell
You get some odd results as well from the tach....a lot of rotax 2 stroke owners just go by ear...listen to the mag drop....you will hear a big drop if there is a problem...thats what I do anyway....and on my 503dcdi the engine note does not change very much during the check.
Yanis, there should be little or no drop in rpm in a well running engine, after all, all you are doing is switching off a duplicate electrical circuit to make sure that the other one is working.
Gentleman, You are all right,
I do apreciate your input, I did my mag check with an increased RPM and yes it was noticable,
Thank you all very much
Regards
Yanis
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