201 Style yokes on F?

[Lood]

Well, I kind of put the cart before the horse in this case. I bought a pair of OEM 201 yokes while my AME was/is still finding out whether these can actually be fitted in my '67 F. He wasn't sure whether 201 yokes will fit on the standard, thinner shaft of the F or whether the shaft also needs to be replaced with a thicker one. Any help to shed some light on this would be appreciated.

[danb35]

I believe the shaft does need to be replaced.  Mooney has a drawing that calls out the required changes, but I don't have the number handy--I'll keep looking through my logbooks and post if I find it.

[scottfromiowa]

I did this to my '66 E.  The shafts are drilled in opposite direction yoke/shaft on 201.  I believe my older yokes had vertical hole/pin vs. the 201 being horizontal...I bought the shafts after the yokes from same salvage company in Ft. Collins, CO...fortunately he still had the control shafts for the plane they were removed off of...

[Guest Anonymous]

Quote: scottfromiowa

I did this to my '66 E.  The shafts are drilled in opposite direction yoke/shaft on 201.  I believe my older yokes had vertical hole/pin vs. the 201 being horizontal...I bought the shafts after the yokes from same salvage company in Ft. Collins, CO...fortunately he still had the control shafts for the plane they were removed off of...

[Lood]

Thanks for all the replies. Not exactly what I wanted to hear, but I'm pretty sure that used shafts will be much easier to come by than yokes.

[M204ever]

FYI, look in my gallery, there are two photos showing the 201 Joke and shaft interface.

The F style shaft may be redone to fit the jokes but you may consider SB?? dealing with the control shaft if applicable for your F.

Please let me know if you need more information.

[N44AB]

After reading all the posts on this thread (201 style yokes on F?), I'm left with a couple of questions that I hope someone can answer for me.

I have a 75M20F with the smaller diameter control shafts and the giant yokes. I want to install an S-tec autopilot and the installer is saying that S-tec requires the yokes be upgraded with a Mooney retrofit kit (just under $4,000) to accommodate the  new AP switches.

It seems that others have simply installed salvaged yokes and control rods on their pre J model Mooney’s. When doing this, is it a "plug and play" job with the J model yokes, control rods, and the larger diameter control rod guides mounted behind the panel or does the Mooney retrofit kit have some type of modified fitting(s)/ connector(s) etc. that allow installation of the J model rods and yokes?

Simply put, will J model yokes and control rods with the appropriate size control rod guides bolt right into my 75 F model?

Thanks,

Ron

75 M20F

 

 

[Ned Gravel]

Ron:

My 65 E model already had an STEC 50 installed when I bought it and the attached photo should give you an idea of how they hooked up the AP and Alt buttons on the left handle of the pilot side yolk.

My PTT is also on that side of the yolk.  You can see the STEC 50 over the right side of the same yolk.

[N44AB]

Thanks Ned!

I know my yoke could be modified to accept the switches however the installer sent me the S-tec document showing the modification requirement for the STC...

[Ron McBride]

Check out the pictures of my panel. Pictures are here as N9154V.  I have a 69F with an STEC 30 plus altitude hold.  3 buttons and the push to talk is on the end.  This is on the original yoke. My plane is unusual as I have 2 Pilots Yokes.

Ron

[N44AB]

 The wording from S-Tec is as follows;

"This kit does not include switch installation data for control wheel, P/N 91720 used on M20C, S/N 20-1147 thru S/N 20-1185, M20E, S/N 21-1161 thru S/N 21-1180 and M20F, S/N 22-1179 thru S/N 22-1305. Control wheel may be replaced using Mooney Aircraft Company Drawing No. 940021. Retrofit Kit No. 946021-507 - this kit includes both pilot and co-pilot control wheel shaft."

It just so happens my M20F falls in between the S/N's listed.

[Lood]

I didn't really take a look to determine exactly how it was done, but the 201 yokes were fitted and a new shaft was not required. As for the S-Tek, I'm not sure as I have seen many older airplanes with flat plates fitted to the control yoke in which the autopilot and other swithces are accommodated.

I can't manage to load the picture, but you can have a look at it in my gallery.

[Lood]

Ooopsie - the pictures actually loaded.

[KSMooniac]

There are quite a few pre-J Mooneys flying with S-TEC autopilots and their original yokes...  I think you need an alternate opinion on the wording of that STC language.  There is no reason it shouldn't be approved with a supplemental switch plate added to the yoke in some fashion and approved via 337.  

[DaV8or]

Here's how mine was done with the original yokes. Not pretty, but it works. I may enclose the exposed wires. I hope to one day go to the 201s.

[DaV8or]

Quote: Lood

I didn't really take a look to determine exactly how it was done, but the 201 yokes were fitted and a new shaft was not required.

[Lood]

I have to go check and refuel my Mooney tomorrow for a long flight on Monday. I'll take a couple of pictures and post them here when I get back.

[Lood]

First off, I'd like to apologise for not keeping my promise regarding the pictures. I fell critically ill, without warning and have been out of action for about 10 days. Needless to say that my intented flight also never took place.

I went to take a picture today and I've added it below. It is clear that they did drill a new hole through the shaft - horisontal for the 201 vs vertical on the original yoke. However, as you can see, they covered even the back, where the shaft enters the yoke, in leather. So, I'm not sure what they did to solve the size difference. I'm pretty sure that they used some sort of insert or bush. I'll send my AME an e-mail and ask him exactly how the made it fit. It is rock solid with no play whatsoever.

[DaV8or]

Quote: Lood

First off, I'd like to apologise for not keeping my promise regarding the pictures. I fell critically ill, without warning and have been out of action for about 10 days. Needless to say that my intented flight also never took place.

I went to take a picture today and I've added it below. It is clear that they did drill a new hole through the shaft - horisontal for the 201 vs vertical on the original yoke. However, as you can see, they covered even the back, where the shaft enters the yoke, in leather. So, I'm not sure what they did to solve the size difference. I'm pretty sure that they used some sort of insert or bush. I'll send my AME an e-mail and ask him exactly how the made it fit. It is rock solid with no play whatsoever.

[Lood]

Dave, apparently, the early model 201's also had the thinner shaft like that on the vintage models. I guess I was lucky to have, unkwowingly, purchased 201 yokes with the small diameter hole. The only difference is that the bolt holes in the 201 yokes are horisontal while those on the vintage yokes are vertical. They simply drilled new, horisontally orientated bolt holes through the shaft and bolted the 201 yokes on.

So, if you buy, make sure that the yokes have the correct size hole for the shaft. It will probably save you a few headaches and some $. If you get yokes with the bigger hole, it couldn't be too difficult to make them fit. Simply turning a perfectly fitting bush on a lathe is what I would do.

[N601RX]

I noticed someone has a pair of leather wrapped 201 style yokes on ebay.

http://cgi.ebay.com/ebaymotors/Mooney-Leather-Wrapped-201-Style-Control-Wheels-Yokes-_W0QQcmdZViewItemQQhashZitem2a11812b37QQitemZ180682304311QQptZMotorsQ5fAviationQ5fPartsQ5fGear

 

[aerobat95]

If I didnt just have mine done by Aerocomfort I would be all over those.  That is a great price all things being considered. 

[jetdriven]

1800$ is a good price? 

[Lood]

I bought mone on e-bay as well. IIRC the price was $650. Final cost was around $700, delivered here in SA. I think I got lucky.

[N601RX]

1800$ is a good price? 

 

I'm thinking we should start casting these things.