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Old 09-21-2015, 09:29 PM
bsacks05's Avatar
bsacks05 bsacks05 is offline
Join Date: Jan 2005
Location: Warner Robins, GA
Posts: 1,187

Nice flying, Ron! I watched it with my A&P students today.
Bruce Sacks
RV-9 N659DB - Flying since 7/1/06
Hatz CB-1 - Fabric covering with Polyfiber.
Warner Robins, GA
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Old 09-21-2015, 10:46 PM
sandifer sandifer is offline
Join Date: Jan 2007
Location: NC
Posts: 628

This is a maneuver I feel that the RVs are not well
suited for because high G forces are needed to produce a brisk
snap roll. The low stall speed, and thus low maneuvering speed,
of the RVs limit the speed range in which snap rolls can be
performed....A careless approach to snap
rolls can overstress the airframe and cause structural failure.
This is probably a good recommendation for most RV pilots who have not studied and received training, since homegrown snap roll technique invariably leads to very rough technique, pulling too hard, and maybe even putting a good bit of rolling G on the airplane. There's a very well known and long-time aviation writer who describes a god-awful rough snap roll technique. What many don't realize is how small of a stick pull snaps can be done with if our technique is good. First problem is thinking of snaps as "horizontal spins". That will lead to rough technique. 3.5G's will do a good snap in the Pitts. I'd be curious what Ron sees in his RV-8. A snap on top of a loop is a very low G snap. Snaps do put torsional stress on the wings and tail section - the amount being a function of entry airspeed.
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