a3holerman
Well-Known Member
- Joined
- Apr 22, 2007
- Messages
- 293
- Reaction score
- 11
Hi,
I have been so lucky to have found this site. Posted a while ago about my newly rebuilt C90 with some questions and was overwhelmed by the response. It was extremely helpfull.
In line with the new engine question another issue has popped up. With the old 65 the elevator trim was fairly easy to operate. Got a little stiff when trimming nose down at cruise of 75-80 mph. Now with the new engine and trying to run it hard during breakin I am seeing 85-90+ mph and nose down trim is extremely hard to crank in. A year or so ago I did tighten the trim cable and use a thin strip if friction tape on the cockpit pulley and it did stop any slippage. The trim is fine when the plane is on the ground but as airspeen builds up it seems to get progressively stiff especially on nose down trim. Now with the higher airspeeds I almost have to slow down retrim then speed up. The plane is due for its annual and I am wondering if its worth pulling both stabs and cleaning out the tubes and greasing them where they mount on the horizontal post? They do have zerk fittings retrofitted on them but not sure how long its been since anyone actually removed and cleaned them.
Again the trim works relatively freely on the ground but as airspeed increases it gets very stiff. Is this quite normal or can it be improved with good maintenance?
As always thanks in advance for any help.
Tom
I have been so lucky to have found this site. Posted a while ago about my newly rebuilt C90 with some questions and was overwhelmed by the response. It was extremely helpfull.
In line with the new engine question another issue has popped up. With the old 65 the elevator trim was fairly easy to operate. Got a little stiff when trimming nose down at cruise of 75-80 mph. Now with the new engine and trying to run it hard during breakin I am seeing 85-90+ mph and nose down trim is extremely hard to crank in. A year or so ago I did tighten the trim cable and use a thin strip if friction tape on the cockpit pulley and it did stop any slippage. The trim is fine when the plane is on the ground but as airspeen builds up it seems to get progressively stiff especially on nose down trim. Now with the higher airspeeds I almost have to slow down retrim then speed up. The plane is due for its annual and I am wondering if its worth pulling both stabs and cleaning out the tubes and greasing them where they mount on the horizontal post? They do have zerk fittings retrofitted on them but not sure how long its been since anyone actually removed and cleaned them.
Again the trim works relatively freely on the ground but as airspeed increases it gets very stiff. Is this quite normal or can it be improved with good maintenance?
As always thanks in advance for any help.
Tom
