Please un-torque my neurons.... Prop effects et al...

[A Squared]

Originally Posted by Brian Abraham

Might interest you jcomm

Is P-factor For Real? | Flying Magazine

Interesting article. The author talks about what happens when you climb inverted, which according to the respective theories behind P-factor and "spiraling slipstream", would cause them to negate each other, rather than reinforce each other.

Originally Posted by From the article

But inverted flight required left rudder rather than right. The overriding force, therefore, was P-factor; slipstream rotation had no noticeable influence... Crow found the same in his Extra: right rudder upright, left rudder inverted and no apparent contribution from the slipstream.