Excelleron Trim and CG

[Pete Cosky]

Thanks Dean,

I'll make sure to make those changes. I have a pumped OS 1.20 in mine and can see an issue with the thrust angles rearing it's ugly head.

I have to admit that this list has some of the best info I have ever found.
  ----- Original Message ----- 
  From: Dean Pappas 
  To: discussion at nsrca.org 
  Sent: Wednesday, February 02, 2005 12:51
  Subject: RE: Excelleron Trim and CG


  Oh yeah! Sorry 'bout the omission, Pete.

  I added two washers (about 0.040" ) between the hardwood beams and the front posts on the soft mount.
  That works out to another degree of down thrust, compared to stock.
  The right thrust is at 3 degrees ( 3/4" difference in tailpost distances across the 15" prop) because any more made the plane dog-track.
  Some right rudder trim was added, and it's a good compromise.
  I am anxious to try the throttle/rudder couple: planes with real big chins tend to suffer from the "there is no correct amount of right thrust" syndrome.
  I am still cutting back on control throws ... a whole bunch. I think that the high rate elevator will end up at 22 degrees, and the ailerons are at about 15 and are still faster than needed.
  The rudder is at 35 degrees.


  Dean Pappas 
  Sr. Design Engineer 
  Kodeos Communications 
  111 Corporate Blvd. 
  South Plainfield, N.J. 07080 
  (908) 222-7817 phone 
  (908) 222-2392 fax 
  d.pappas at kodeos.com 

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