Universal Joint

[swift1b]

I have noticed slack in the the control column when moving the ailerons. It appears that the universal joint has some wear in the bolts/holes that is causing the movement. Can these be rebuilt? Any shops out there that do these? Could the holes be bored oversized and new (metric) bolts installed

Regards, bob

[Pearson]

Re: Universal Joint

I reworked mine a few years ago. The part that was worn on mine was just a piece of 1" square tubing with cross holes drilled through it. It was not at all difficult to reproduce. It was a noticable improvement, but did not remove all of the slack.

[swift1b]

Re: Universal Joint

Richard

Thank you for sharing this. It will help in getting the slack out! I only wish there was a special "oversize" bolt that one could simply drill out the original holes and replace with "oversize" bolts. That would assure all slack would be removed and make a simple fix.

Thanks again for sharing.... Regards, bob

[Robert Lees]

Re: Universal Joint

I welded mine up & then re-drilled & reamed the holes:




Each pair of opposing 3/16" diameter holes are displaced from each other, this gives clearance between the AN3 bolts that are at 90 degrees inside this assembly. The section is 3/4" internal seamless square.

[swift1b]

Re: Universal Joint

Robert


Thank you for sharing. I was hoping there would be a simple solution to such a simple thing as this!

Regards, bob p

[Hal]

Re: Universal Joint

Robert,
Where did you find a reamer that small? I've looked in several catalogs and can't find one.
Thanks,
Hal

I welded mine up & then re-drilled & reamed the holes:




Each pair of opposing 3/16" diameter holes are displaced from each other, this gives clearance between the AN3 bolts that are at 90 degrees inside this assembly. The section is 3/4" internal seamless square.

[Robert Lees]

Re: Universal Joint

3/16" reamer? Fairly standard size, I would have thought. I purchased mine through a tool & die stockist in the UK, Tracy Tools.

[Len Petterson]

Re: Universal Joint

For reamer and such tool go to local industrial supply company if they dont have the can order it.
But you are NOT working on a aircraft!

[NY86]

Re: Universal Joint

Here's one. Not cheap, but...

[Robert Lees]

Re: Universal Joint

...or a hand reamer (like wot I used) for $20 from the same source.

[Hal]

Re: Universal Joint

Thanks guys.

[magman]

Re: Universal Joint

Is the "hole" you are referring to the one that gets fill with money?

I thought it was MUCH larger & required MASSIVE influx of AMU's!