What is the proper nomenclature, where do I find a new one?

[Mooneymite]

Working on my throttle linkage, I found the "stop nut", or whatever it is called is damaged.

 

Most of you will recognize this as the carburetor end of the linkage.  This is on a 74 C model.

 

I have tried Aircraft Spruce and my local engine re-builder, but have not come up with either a name for the "stop nut", or a replacement.  Obviously, the one I have is useable, but it's "broke", so I'd like to have a new one.

 

Anyone?

 

 

 

[Rwsavory]

Call Don Maxwell Aviation. He will probably have a replacement in stock.

[1964-M20E]

I’ve not worked on a C model but from the looks of it the castellation on the set screw is only there for a cotter pin or safety wire.  It is hard to tell from the photos but what size screw is it?  I’d guess not larger than ¼”.  If you have access to a milling machine you might be able to mill a new set screw  but if it is ¼” or less it would be challenging but doable.  Now as for the other part that might be a little more challenging to make a new one but I think doable.

 

Spruce does have a selection of other cable locks one might work and you mechanic might sign off on it.

[mike_elliott]

Now you know why a MSC will change that type out whenever they see it. Call Don Maxwell and he will send you the heim type. Don't worry about trying to match that kind, it is a bad idea. Get the new end.

[Mooneymite]

Now you know why a MSC will change that type out whenever they see it. Call Don Maxwell and he will send you the heim type. Don't worry about trying to match that kind, it is a bad idea. Get the new end.

Hmmmm.  A heim link was suggested to me by the engine shop.  However, I'm not sure that such a substitution is technically legal without a bunch of paperwork.

 

As they say, "this is the way the airplane was designed".

 

I can make a replacement (owner fabricated), but I was hoping someone might recognize/identify a readily available part.

 

It is 3/8" in diameter, fine thread.  Such bolts are plentiful in the PMA section of Lowes, but have to be modified.

[N601RX]

I noticed mine had been previously changed out with heim rod ends.  It's possible Mooney may have superceeded the part number.

[mike_elliott]

I *think* there may be an SB on this. I know Don Maxwell changes every one he sees to the new heim type. But instead of guessing here, why not give him a quick call, order up what you need. He will let you know what is needed for legality, but I think it is a simple log entry by an FAA approved A$P.

[Rwsavory]

Hmmmm.  A heim link was suggested to me by the engine shop.  However, I'm not sure that such a substitution is technically legal without a bunch of paperwork.

 

As they say, "this is the way the airplane was designed".

 

I can make a replacement (owner fabricated), but I was hoping someone might recognize/identify a readily available part.

 

It is 3/8" in diameter, fine thread.  Such bolts are plentiful in the PMA section of Lowes, but have to be modified.

 

Come to think of it, Don did our pre-buy and noted we had the old style.  We did not have it changed since it was in good shape.  The new-style end is what you need, and I'm sure Don can sell you the part or find it for you.

[Mooneymite]

Here's what Don Maxwell emailed me:

 

Hi, That part is no longer available but there are parts in automotive applications that are very similar. Mooney has a retro kit Pn. 660051-005, that includes a heim bearing, bolt, 2 spacers, flat washer, castle nut and cotter pin for  $132.82. Let me know if you would like to order one.

Don

 

 

So, I'm still looking for that "stop nut".  Anyone have one in their "junk box" after the conversion?

[mike_elliott]

Dang! I think the "kit" was only about $20 when Don changed mine, albeit 9 years ago. Mooney is real proud of their version of a Heim bearing nowdays, or maybe its the flat washer or cotter pin driving up the price...

[Yetti]

There seem to be several type ends for nomenclature. But mostly Ball Joint Throttle cable should work.  This page should help narrow it down to the type.   http://www.jamestowndistributors.com/userportal/document.do?docId=744   Then a boat or tractor store should help. 

[Mooneymite]

There seem to be several type ends for nomenclature. But mostly Ball Joint Throttle cable should work.  This page should help narrow it down to the type.   http://www.jamestowndistributors.com/userportal/document.do?docId=744   Then a boat or tractor store should help.

Thanks.

Lots of choices for throttle linkages, but no luck finding the stop nut.

I'm still looking.

[jetdriven]

I have one. PM me.   It fell off our mixture cable when flying, luckily the mixture was in the mid range and the IO-360 runs well LOP.  We replaced it with a high-misalignment rod end, this one in fact: http://www.amazon.com/gp/product/B003JQLNC6/ref=oh_details_o06_s00_i00?ie=UTF8&psc=1

[Mooneymite]

Thanks.

 

PM sent.