On Oct 18, 12:02*pm, Frank Stutzman wrote:
a wrote:
In my
case the engine ran a bit rougher -- rpms stayed where they were set,
of course, because prop pitch changed to accommodate the reduction in
power.

And if you were flying a 6 cylinder (or larger) engine, you may not have
even noticed the roughness. *

(I once failed to get the switch back to "both" after a run-up. *Managed
to take-off and fly for ~15 minutes before I noticed it. *The roughness
became more pronounced when I started leaning it out).

--
Frank Stutzman
Bonanza N494B * * "Hula Girl"
Boise, ID

The IO 360 has 4 cylinders -- the roughness was not really bad, and
you could be right -- with 6 may not have been noticeable.

My hand stays on the mag switch throughout a mag check so I want to
believe I won't forget to go back to both -- help us avoid making your
mistake: do you remember what distracted you enough to leave it
pointing to a single bank of plugs?