Running runup?

Yes. If you attend any of the major fly-ins your run-up will be a rolling
one.

Amen.

If you stop to do a "proper" run-up right before departing OSH (or SNF),
you'll have four FAA guys in pink shirts absolutely apoplectic, jumping up
and down and waving flags at you! "Rolling" run-ups are sometimes your only
option.

Many times the traffic gets backed up considerably, however, and you can
kinda cock the plane to the side, and do a "real" run-up. Of course, then
you get into the discussion of WHEN to do your run-up.

If you do a run-up in line, and it's five or ten (or 20?) minutes till you
depart, you've lost much of the utility of doing a run-up. Isn't the idea
to do the run-up as close to departure as possible, to ensure that the
engine and prop are functioning properly at take-off?

It's probably my own paranoia, but I try to do my run-up right before
fire-walling the throttle so that nothing else has a chance to break in the
meantime.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"