28%300spec thrust??
 

hey guys i have to use right rudder on strait up climbs and little on take off,seems like it needs more the higher i go,,seems like it needs too much,,if set up right the plane should need a little so should do a mix thr-rud,, or should i give it more right thrust??

RE: 28%300spec thrust??
 

Danny,

As the plane slows down going vertical, with the engine still pulling strong, the torque will require some right rudder to correct a pull to the left, but as I found out with my Edge, there's more involved than thrust angels here. Also check your lateral balance, both static and dynamic, and make sure to match your elevator half throws. The WH planes tend to have the thrust angels correct from the factory, built in a jig you know, so check the easy things first. Get a copy of Peter Goldsmith's trim chart and go through it. It Works!;)

RE: 28%300spec thrust??
 

I did have to add more right thrust than what was built into the airframe. But you have to remember that even changing your prop can change the thrust amount needed to hold a straight upline. You must use the same prop you trimmed your plane with when flying sequences. This is why so many pilots are falling in love with Mejlick props for there 50cc-150cc planes. You can use the same prop for sequences and 3D, they have a nice balance of both worlds without swapping back and forth.

RE: 28%300spec thrust??
 

Regarding throttle to rudder mixing. It's pretty common to use a little right rudder mix at full throttle on an upline, and sometimes to use a little left rudder mix at low throttle settings on a downline. For a little more comprehensive explanation look into the aircraft trimming articles written by Peter Goldsmith in Model Aviation a couple of issues back. Very accurate and pretty darn informative. There have also been some things written in 3D Flyer that cover some of this, but not as well written.