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[Fwd: REFLECTOR: front control bearing]
"James F. Agnew" wrote:
> Dale, it took about 1 hour to make and install the plate. I took the simple way
> and just scribed around the plate that the bearing goes through, sawed the 1/8"
> 6061-T6 plate with a metal cutting blade in a saber saw, filed it smooth and used
> the original mount to drill the two bolt holes. A 3/4" hole saw proved to be
> sloppy enough to clear the protrusion on the inside bearing with a little filling
> replace the bearing and bolted the cover plate on with two slightly AN-3 bolts.
> RE-INSTALL AND CHECK ALL BOLTS AND ROTATING PARTS FOR PROPER CLEARANCE.
> I also took two 2" x 2" pieces of 1/16" plate and drilled the same large hole in
> the center, cut up one side to make a U shaped slot that will slide down over the
> aileron torque tube bell crank, drill and bolt in place to clamp these bearings
> DAlexan424@aol.com wrote:
> > In a message dated 1/7/99 5:20:59 AM Pacific Standard Time, Jim_Agnew@ibm.net
> > writes:
> > > Sam DaSilva and I inspected the bearing mount yesterday and came to the
> > > conclusion
> > > that a retaining plate over the back side of the bearing with a hole
> > > slightly
> > > larger than the torque tube would solve the problem. The two existing AN-3
> > > bolts
> > > would be changed to standard flat head ones and would be more than
> > adequate.
> > > We
> > > also discussed this with Simon using my plane since this bearing is clearly
> > > visible. Although there is no axial load on the bearings for the aileron
> > > torque
> > > tubes I'm tempted to also put captive retaining plates on them. I will
> > look
> > > at
> > > the rear bearing on the stick torque tube to see if it should also get the
> > > retaining plate.
> > >
> > > At this point I'm thinking that 1/8" 6061-T6 aluminum would be adequate but
> > > I have
> > > not ruled out thinner steel since these plates are nothing but large
> > washers
> > > for
> > > all intents and purposes.
> > >
> > > Jim
> > >
> > >
> > That's what David and I were thinking of. Just a little cap plate to cover
> > the bearing and capture it to the mounting plate. Shouldn't take more than 30
> > minutes to make once set up in a lathe. And the hole doesn't have to be as
> > small as the tube unless one were worried about the bearing coming apart and
> > if that is the next worry du jour, then the bearing needs to be replaced. But
> > the bearing will work fine I think. Not THAT much axial load with a sliding
> > tube.
> > Lord, this could get complicated unless we check our nature to be
> > perfectionists at the door. I can just see this developing into a pair of
> > tapered Timken bearings, shimmed to fit with a mandatory 25 hour inspection
> > and zerk fitting on all sides!
> > We can be a strange lot sometimes.
> > Dale Alexander
> > 173 RG Gull-Wing
> // James F. Agnew
> // Tampa, FL
> // Velocity 173 FG Elite ( http://www.VelocityAircraft.com/ ) under construction
// James F. Agnew
// Tampa, FL
// Velocity 173 FG Elite ( http://www.VelocityAircraft.com/ ) under construction