Hello guys, Im about to install an OS .91 FX in my Extra 330L, 1.65 span; 1.55 fuse, 3,4kg weight. Just wanna know if I need to put some degrees of incidence to the engine, in order to get a maximum performance in 3D manouvres, for example.

Thanks you so much for your answers, and have a nice day!
Andrés

Hi!
I don't use it!

G'day Mate,
It's actually known as thrust, either down, up, right or left, the plane's firewall probably has some built in, but the best way to find out is to fly it & see.
There are lots of variables involved, so check out the page below, & adjust accordingly.

http://www.palosrc.com/instructors/trim-chrt.htm

Cool dude! Thanks alan0899!!! That page supports me about all concerning balancing and flying characteristics.

Ill try those tests on my other planes too.