Fit of steel elevator bushings in bronze bearings

[Flyboy66]

I was pretty sure that I was not making any progress but I kept going and finally one end started to go in to the bushing so I knew I was actually making headway

[Shadowrider]

I was pretty sure that I was not making any progress but I kept going and finally one end started to go in to the bushing so I knew I was actually making headway

It takes what feels like forever. I had a few that where way bad, so I started with a couple of them with a file, then 200 grit then 400 grit. Its just dangerous using the file because it takes a lot off at once. It also helps to change sand paper often. Also don't mix up the direction or the bushings or you will be back sanding. Next step is to be careful that when "pressing them in" as you can get them stuck. I had to sand the outside to get a couple to fit or you may stick them half way in.

[FoxTrotter]

BTW: in my message of 12:40 below, the measurements are off by a constant amount; the actual measurements are 0.295 and 0.315 or so (zero was off on the digital calipers before).

[efwd]

It seems I recall doing the same as shadowrider. File as it turned on drill press.

[FoxTrotter]

All right, now this is ridiculous.

I accept ('cause the manual warned me) that I've got to sand the steel bushings so they fit in the brass bearings. But after I got the first one done, I went to put the AN3 bolt through it -- and it wouldn't begin to fit.

I checked all 7 bushings, and the AN3 bolt fit slick as you like in 5 of them, and wouldn't start to enter the other 2. I had to ream them (fortunately, I had a 3/16 reamer) and then work them to get the bolts to fit.

Who cast these bushings -- Manny, Moe and Jack or Larry, Moe and Curly?

[Clark in AZ]

Probably Lee or Chang. Sorry couldn't resist...

[efwd]

trust me, you won't come across too many more of thse laborious cross roads if any at all. Sometimes you just have to work more to achieve the gratification I suppose.

[Shadowrider]

All right, now this is ridiculous.

I accept ('cause the manual warned me) that I've got to sand the steel bushings so they fit in the brass bearings. But after I got the first one done, I went to put the AN3 bolt through it -- and it wouldn't begin to fit.

I checked all 7 bushings, and the AN3 bolt fit slick as you like in 5 of them, and wouldn't start to enter the other 2. I had to ream them (fortunately, I had a 3/16 reamer) and then work them to get the bolts to fit.

Who cast these bushings -- Manny, Moe and Jack or Larry, Moe and Curly?

I hear you! We where getting frustrated, but just had to have a change of attitude. Don’t expect anything to fit correctly and be prepared to sand, check, sand, check and so on. Going into each task expecting it won’t fit correctly and you won’t be disappointed. Rudder, rudder pedals and brake pedals, control linkage, all have to be sand down. Rudder pedals are a pain. Just take your time and don’t rush it. It will pay off down the road when your flying it.

[FoxTrotter]

One last (I hope!) question on this topic: the manual does not specify any lubrication for the 7 horizontal stabilizer bushings (6 to hold the elevator, 1 connecting horizontal stabilizer to fuselage). Is that correct? No lubricant?


Thanks


Michael