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-   -   G.P. Pitts engine angle? (https://www.rcuniverse.com/forum/arf-rtf-75/1159538-g-p-pitts-engine-angle.html)

Rambo-RCU 09-24-2003 07:27 PM

G.P. Pitts engine angle?
 
Hey anyone built the S2 Pitts yet by G.P.? I've started mine and noticed the engine box mounting plate angle is well to the right about 1/4 inch.Anyone elses? This would provide a lot of right thrus[sm=drowning.gif]t but this does'nt seem right.Thanks

Goldwing-RCU 09-26-2003 12:52 PM

RE: G.P. Pitts engine angle?
 
Mine has that much right thrust too! I too was wondering the same thing. I read some where it should be 2 degrees but cant remember where. (Maybe the Manual) not ready to bolt engine in yet for a couple days so hopefully someone will help you and I can learn off your question. I'm putting in a Quadra 52

Rambo-RCU 09-28-2003 04:24 PM

RE: G.P. Pitts engine angle?
 
Thanks I guess we will both blunder thru this at the same time.I likewise am using Q52. What prop size are you considering? I'm thinking 22x8 or 20x10 with the latter having a little more ground clearance.Let me know how yours turns out.My E mail is jma0422@my bluelight.com Oh by the way G.P. finally got back to me and said the angle is intentional and would help thrusting probs.

Tired Old Man 09-29-2003 11:06 PM

RE: G.P. Pitts engine angle?
 
The right thrust built into the firewall of the Pitts is intentional. Without it, the plane would be very hard to trim out for aerobatics.

I'm flying mine with a Brisson 3.2 gas engine, and when I power up for take off I still have to input a lot of right rudder to offset the torque.

The size of this plane dictates that a larger engine be used than a lot of people may be used to. Great Planes actually did us a favor by building in a SMALL amount of right thrust (about 1/4"). Without it, we would all be adding washers under one side of the engine mount to correct a left yawing tendency. It also helps the plane roll fairly equally both left and right.

Don't change a thing. Just center your engine in the cowl and everything will work out great. It's a good flying bipe. Keep the speed up on final and don't cut the throttle to idle until landing is assured. Just like the full scale.

Silversurfer


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