Nose gear push rod question for Mooney A&Ps

[cliffy]

This was promted by another thread

Can you see any reason why the electric gear spring push rods for the

nose gear wouldn't work on the manual gear system and if it would work,

what affect would it have on handle force going down?

I've never measured their length so I don't know if they are an exact fit.

I also realize its not legal to do it.

Just trying to think it through. Looking for other opinions.

[Hank]

On our vintage birds, I would expect there to be no problem doing this. Mooney simply cut the Johnson bar off at the floor and attached an electric motor there.

 

I'm sure Clarence or another A&P will be along soon to confirm or deny this. It may make entirely too much sense.

[Andy95W]

Another head-scratcher, Cliffy.

I'm with Hank- I'll bet the length is the same.

As for Jonson Bar pressure, I think to be rigged properly (both spring compression and over- center link pressure) the last inch of Johnson Bar movement would take more effort than normal, since the electric gear models don't have the heavy springs in the belly of the airplane, only the bungees at the landing gear. The pilot would have to overcome both spring pressures at the furthest extent of the movement.

[Culver LFA]

On our vintage birds, I would expect there to be no problem doing this. Mooney simply cut the Johnson bar off at the floor and attached an electric motor there.

 

I'm sure Clarence or another A&P will be along soon to confirm or deny this. It may make entirely too much sense.

Interesting, my M20F was converted from Johnson bar to electric when new (1967 or 68). I found this info while going through the logbooks on my first annual this year and then looking at all of the gear mechanism parts closely I could find no indications of manual gear once being installed. Definitely no cutting the Johnson bar off that I could see, appears to be with proper replacement parts.

What would it take to properly convert back to Johnson bar, does anyone have a list of parts normally required or is airplane converted different?

[N201MKTurbo]

The bell crank that the Johnson bar attaches to is different for the electric gear. You would need to put in the up and down lock brackets and redo the gear up/down wiring and remove all the wiring for the gear motor.

The wiring changes would be a lot more work then the mechanical changes.

[Alan Fox]

I think the point was lost here , if I am reading the OP correctly , he wants to know if he can put an electric gear retract rod in a manual gear plane....the answer is probably , if not I have a manual rod for a 66 E ....

[cliffy]

Clarification-

I was wondering what effect the spring rods would have on the extend cycle compared to the solid rods.

I was thinking that with the solid rods pulling up hard against the overcenter link to provide the proper

torque the force vector goes up real fast as the rod pulls up tight against the link stop. It was my

postulation that the pull direction would be limited to spring pressure only if the bungees were used in

manual gear systems. The spring rods would obviuosly provide enough over center force as they do on the

electric gear models and maybe the last inch of closing in on the gear down socket would be somewaht easier,

especially if the rod adjustment was a little off. A little off on the solid rods makes a big difference

in the last inch.

On the retract operation no difference would be noted as it is essensially a soild rod that way.

Yes, scratching my head and wondering.