I actually had to remove material so that two halves would mate closer. Then I found I removed too much so I had to shim it.
I actually had to remove material so that two halves would mate closer. Then I found I removed too much so I had to shim it.
Eddie Forward
Flying
SS7, 912iS, Garmin G3X
So you shimmed the mating surface, or the bearing surface? What with?
Paul
Building STi
Rotax 915is
MT Prop
Oratex
N951CT
shimmed only surfaces that involve the bolts. No shim inside the radius. You can use anything really but I had the slivers of material that I had removed on the band saw. I just smoothed them out on the belt sander and slipped it between the mating surfaces before the bolts.
Eddie Forward
Flying
SS7, 912iS, Garmin G3X
Paul, make absolutely sure that left side plastic bearing block is installed and bolted to final torque before you decide if you have too much or too little clearance. Tightening the bolts makes a very definite difference. Fitting it up on the bench with hand tight bolts is not the way to evaluate clearance. Maybe you already know this, but just a reminder.
Jim Ott
Portland, OR
Kitfox SS7 flying
Rotax 912ULS
I too remove ever so slightly too much material and repaired exactly as Eddie did with a very thin stainless shim material in the same location as Eddie and yes Jim’s advice would likely prevented my needed shimming. No harm though. Works perfect now. Live and learn.
DesertFox4
Admin.
7 Super Sport912 ULS Tri-gear
Thanks guys, I got the plastic bearing fitted properly. Thanks for the suggestions. Sorry to ask so many questions. Trying to fit the bronze bearings into the the control column mounting bracket. What prep did you do before pressing the bearings in. Ream the bracket? Take down the bearing diameter chucked up in a drill press?
Paul
Building STi
Rotax 915is
MT Prop
Oratex
N951CT
One trick I always try before removing any material on a bearing that is supposed to be a press fit is to put the bearing in the freezer for a few hours before installation. Sometimes its close enough that the shrinkage allows for the install without any material removal. Bruce N199CL
Are the stick pivot bearings supposed to be seated all the way down into the bottom of the bushing or just flush with the control column bushing?
Paul
Building STi
Rotax 915is
MT Prop
Oratex
N951CT
I believe they should be all the way down. You could lay it on a table and put the specified bolt through it, along with some calipers and do a prelim measurement without full install if that makes sense.
Flying SS7, G3X, 912iS
https://mountainfoxbuild.wordpress.com/
What tools and methods have people used to trim the rudder control horns for the adjustable rudder pedal option?
Paul
Building STi
Rotax 915is
MT Prop
Oratex
N951CT