The_Mongrel
Posts: 2407
Joined: 9/19/2007 From: Murrumbateman, AUSTRALIA Status: offline
|
quote:
ORIGINAL: djanke I'm not trying to shim it. It already has some shimming built into the motor mount. After the motor is mounted, the motor itself is tilted towards the right and slightly downward. The most forward part of the mount where the screws go is angled. Either my mount was messed up and put together incorrectly or this angulation was put there on purpose. I know that on some glow machines, you add shims to counteract the torque. If anyone can take a minute to look at their motor mount and see if it has the same angulation as mine it would be greatly appreciated. David YES IT SHOULD! Is the simple answer. It is called Thrust Angle and most planes have it... even the smaller electrics. It is there to counter the torque that your motor and prop will put out. It should be down and to the right. It can look rather a big angle, but believe me, it should be there. If you were to see the thrust angle on my P51, you would ask how it can even fly. The down angle is there to counter the amount of lift your plane is producing... so in essence it is pulling your plane down as the wings take it up with lift. If you have no thrust angle, you would find yourself constantly adding down elevator to keep her nose down. NOW... the faster the plane goes, the more lift is created by the wings and the more "Down" attitude you need. Some set up the thrust angle "heavy" so that at low speed you need UP elevator, but at high speed she flies level. My advice here is to leave it at stock! You will be fine. A WORD OF WARNING.... When you are low and slow and you give it full noise, it will most likely "Dip" before it will climb. That is because the thrust angle will push her down. So if you lining up on final and you miss and want to go around... DO NOT give it full noise... increase the throttle slowly and let her climb out. Good luck! Cheers -J
_____________________________
Anyone can crash!! But I make it look good!!!
|