P40 ground handling
#27
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RE: P40 ground handling
I think we got off course on warbird takeoff discussion. In order to minimize plane pulling to the left on take off, bottom line is:
1) Take advantage of weathervane effect if having crosswind. Take off in direction that allows wind to blow against right side of fuselage.
2) Reduce P-factor which can be done by: a) put in 3-4 degrees right and down thrust on engine, b) get the tailwheel off the ground asap to reduce angle of attack/reduce P-factor, and allow rudder to be more effect to keep plane tracking straight down the runway.
1) Take advantage of weathervane effect if having crosswind. Take off in direction that allows wind to blow against right side of fuselage.
2) Reduce P-factor which can be done by: a) put in 3-4 degrees right and down thrust on engine, b) get the tailwheel off the ground asap to reduce angle of attack/reduce P-factor, and allow rudder to be more effect to keep plane tracking straight down the runway.
#30
My Feedback: (6)
RE: P40 ground handling
ORIGINAL: aghost
harley, don't know what Tx you have, but my Futaba has a throttle curve feature. If your Tx has it, that feature probably works better than using expo on a throttle.
'' Engine at full rpm with with transmitter stick at half throttle. Going to try adding expo to slow throttle. Never tried this before.''
Brian
#31
Join Date: Jan 2008
Location: darwin, AUSTRALIA
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RE: P40 ground handling
ORIGINAL: harley6133
My Zirolli P40 has terrible ground handling. On take off I steers hard left, not a drift, a turn left.
Gear is straight, both wheels roll free, engine thrust is good Flys like it is on rails , once you get it in the air, landing are straight
Engine is a 3w75 turning 6700, Mej 3 blade 22x10. Any suggestion would be helpful.
My Zirolli P40 has terrible ground handling. On take off I steers hard left, not a drift, a turn left.
Gear is straight, both wheels roll free, engine thrust is good Flys like it is on rails , once you get it in the air, landing are straight
Engine is a 3w75 turning 6700, Mej 3 blade 22x10. Any suggestion would be helpful.
hope this helps
Greg
#32
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RE: P40 ground handling
I have a couple of Skyshark P 40 that had the same problem. It was a handful on takeoff AND landings. Always wanted to pull left. The engines were set up straight as per instructions. One club member put in 2 degrees right and 2 degrees down thrust on his. It handles like a normal plane now. I did the same on both of my P40s and there are a real pleasure to fly now. It took some work to do but worth it! Paul