Flyler

@OSUAV8TER Awesome, thanks for making that so easy for me

Hello sir, Do you still have the Plane Plastics door trim? Mine is all cracked up on my new-to-me J and this would really help make the old girl look her best.

Do you have a recommendation to replace the nav/strobe lights on my '79 J? Mine are working now, but figured it would be smart to get some replacements ready. Could I replace the strobe unit too?

I imagine any time the nose wheel bounces and the leg goes "boing" in rebound against the stop, the moment it imparts will unlock the nose gear momentarily. A shock damper would really help with that phenomenon, if it does indeed happen.

I'll look through logs now, but its coming out anyways. Fortunately whoever put it in, did not modify any of the factory wiring and left the connectors there. Since the other end of the switch wiring is disconnected/capped off, its easy to remove and not worry about. Seems a lot safer than having that switch in the loop!

Thank you for your input. I'm sorry if my first post was not clear- the switch is wired directly to the oil pressure gauge. It is a toggle switch. So in one position the oil pressure gauge works as normal and the factory intended. In the other position. The signal is sent off to a wire is not connected to anything. Perhaps it was at one point, but no longer. It is intentional as the connector is covered with shrink tube and zip tied.

Hello detectives. I have a new, beautiful M20J. It includes a mysterious, unlabeled switch. My pieces of evidence: 1) when toggling switch, only noticeable change is that the factory Mooney oil pressure gauge pegs high. Toggle switch back, it goes back to normal reading. 2) chasing wires of switch, it appears to be a 2 position switch that interfaced with the oil pressure gauge. The wires on the other end of the switch head towards RH side of panel but are disconnected and tied off. I would like to remove this switch one day, but am curious about what it may have done? Plane has a JPI700 and Fuel Scan 450. Any idea what instrument may have, presumably, ingested oil pressure data when the pilot flicked the switch?

Call South West Texas Aviation. They also repair the leg via welding and heat treat. It was a year ago now, but I sent them a leg from my F model and while it did not have the shock absorber installed, it did have the extra hole in the leg. Maybe you'll get lucky!

Write the items down in a list, and start with the big show stoppers. Check for a corroded spar before you waste much time reading plugs and such.

I remember the guys in the composites shop used to "debulk" with vacuum bags. Precut your fiber patches, lay them in place (no resin or prepreg and leave cold) bag and vac and then let it sit overnight. The fibers would tend to stay-put a lot easier after that.

Gentlemen, I have spoken to Plane Power (Hartzell) engineering and they recommended the AL12-70 kit, which includes new brackets. They directed me to the engineering drawing on their website as well. So the old girl will have a new alternator in 2 days from Aircraft Spruce. I acknowledge this is an expensive option but worth the money for me at this time. Thank you all!

Thank you for this reply, this really helps with my decision.

Did you find the Plane Power overhaul unit to be lacking? I'm just curious about the details. My current alternator case has some issues, seems like the bearings are probably quite worn, etc. I believe I'm due for an alternator overhaul anyways. There's also an issue of timing as right now the plane is at a nearby airport, but not my own, and sitting out on the tarmac. So just getting something "working and complete" is worth the extra money for me right now.

Thank you sir.

After its 10 hour flight home, my new (to me) '79 M20J gracefully waited until landing at home to break the field wire right at the alternator. Upon inspection, it looks like the belt tension adjustment bracket slot has a slight crack in it. My alternator is an ALY-8420 and while I have it out, I am considering replacing it with another unit. I had hear of "Plane Power" a few times so looked up a replacement. The replacement looks good, and most images show that it conveniently comes with a new bracket as well! So that is a nicety I did not expect. Now I have not been in this airplane business too long, but I do know that niceties such as this are not common... has anyone had exerience with the Plane power kit from ALY-8420 to their AL12-F60 and used the new bracket?