REFLECTOR: Ignition Timing

[Michael Watson]

John,

Was your takeoff power reduced, ie longer takeoff run?
How was your climb power settings compared to normal timing (28 BTDC)

Mike W.


On Tue, May 21, 2013 at 8:32 PM, John Dibble <aminetech at bluefrog.com> wrote:

> Well, I think I'm on to something here.  A while back  I mentioned that I
> was experimenting with reducing the timing on my Franklin engine.  I now
> have it set at 24 degrees BTDC, which is 4 degrees less than standard.
>  Yesterday I flew from MS to NY at 11.5 k feet.  The engine ran very
> smooth, much smoother than in the past several years.  My #3 cylinder which
> had been running 30 F higher than the others is now in line with the rest.
>  Best of all, I gained 6 kn in airspeed.  One thing I was hoping for that
> didn't happen is elimination of the oil streak on the cowl from the
> breather tube.  I plan to reduce the timing further and see if the oil
> streak goes away.
>
> John
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