M20F aileron flap rigging boards

[Ronnie Pool]

I am an A&P IA and recently purchased an M20F. I am looking for a set of aileron rigging boards. I’ve seen the topic brought up a couple times on here but they seem to be from a while back. Does anyone have a good contact for drawings or the boards themselves? Thanks for any info.

 

 

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[Jsno]

The boards are made out of thin plywood with the scales bolted to them. I don’t think that they would be easy to copy.  A used set if you find them will run $1500.00. You can by new from a Mooney Maintenance center but that will be very expensive.  Keep an eye out and if you see them on E-Bay or here. Grab them quick.

[Kelpro999]

 I have a set for my C. With a sample they could be copied exactly to OE dimension with some basic skills and some time, however if you have one to copy then you have one to use and move on. They aren’t something used repeatedly on the same plane but if you’re like me then having proper tools on hand is important.

[Ronnie Pool]

I would be interested in and capable of making a copy rather quickly if I could locate a set close by. I would definitely like to retain a set as I may be working on others in the future. I am in Savannah GA.


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[Kelpro999]

1 hour ago, Ronnie Pool said:

I could locate a set close by.

 That’s important given shipping sizable fragile unobtainium. I’m about as far west of you as one could get driving and I think there’s a difference between C & F on one of them.

 Someone on here should be close to you.

[EricJ]

Rigging can be performed without the boards.   The control surface angles are described in the TCDS.    A protractor or digital level/protractor can be used effectively.    The boards just make it easier.

[cliffy]

 

On the ailerons and flaps one can come close just by clamping a wooden bar across the top of the control wheels and 

then aligning the balance weights of the ailerons to match the top of the wing skins (taking care to account for aerodynamic

forces pushing up on the ailerons) and while those two are clamped secure, adjust the flaps to match the ailerons.

One would still have to make a few trim control check flights and adjust the up stop of the flaps to counter any small roll

tendencies.

The aileron balance weights generally run about faired with the top of the wing in flight ( w/ flight loads)

Then use a Devil level to check the control throws. 

 

Always check the ball both on the ground and in the air for perfect center (in flight adjusted with rudder tab)

 

When doing the pitch controls you do need some sort of board to set the stab to the correct angle in relation to the C/L level position of the fuselage  (3 1/2 degrees LE down on some) in order to get the correct deflection angles on the elevator. 

One can clamp the elevator weights to the stab and then make a board that keys on the LE and TE and has a flat  parallel

top to the LE/TE notches and then use a Devil Level to set the correct nose down angle