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Posted

Hello All, 

I gave a brief intro of myself in another thread on G5's. But basically I've purchased a '77 M20F that has been out of action and hangared in a desert environment. It's recently arrived at my hangar shown below. My wife likes the rego, as her maiden name was Kathy Whitty. So I've nicknamed it the Kathy Whitty Allstar to keep her interest. 

 

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  • Like 4
Posted

I've pulled the prop and about to remove the FCU, mags etc. 

I think I'm almost ready to remove the centre cowl, maybe just the Ram Air cable to go. Any tricks with that. It looked like a two person job.

Cheers,

Denis.

IMG_1027.jpeg

  • Like 2
Posted
Hello All, 
I gave a brief intro of myself in another thread on G5's. But basically I've purchased a '77 M20F that has been out of action and hangared in a desert environment. It's recently arrived at my hangar shown below. My wife likes the rego, as her maiden name was Kathy Whitty. So I've nicknamed it the Kathy Whitty Allstar to keep her interest. 
 
IMG_10182.jpeg.e2b254274dbf1653374c947f541b1e6c.jpeg
IMG_1019.jpeg.36312ff7ec46f8af5dd2792f79677ab4.jpeg

Smart idea! Nice bird. Welcome on board


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Posted

Here's an interesting set up. Is this typical Mooney? The STBY VAC pull.IMG_1072.jpeg.2ebda6560762b5a3015674f5f8f378a1.jpeg

 

It lead to this lever in brass.

 

IMG_1076.jpeg.4ff8d23de991f7cf614d56dc3cbf60ed.jpeg

 

Which in turn lead to the flex tube running to # 3 intake tube as a source of vacuum. Does this work ok? 

It's coming out anyway as the aircraft will be VFR and if I take it down the IFR road I'll remove the VAC system altogether. 

Posted
19 minutes ago, Denis Mexted said:

 

The tube connect to the intake tube as the VAC source.

image.jpeg.4b66974b4a987d1ca14573d4dd6d1ed2.jpeg

It uses manifold vacuum to run your gyros. You have to run a low power setting for it to work. There should be a POH supplement that describes its operation.

  • Like 1
Posted
55 minutes ago, Denis Mexted said:

Here's an interesting set up. Is this typical Mooney? The STBY VAC pull.IMG_1072.jpeg.2ebda6560762b5a3015674f5f8f378a1.jpeg

 

It lead to this lever in brass.

 

IMG_1076.jpeg.4ff8d23de991f7cf614d56dc3cbf60ed.jpeg

 

Which in turn lead to the flex tube running to # 3 intake tube as a source of vacuum. Does this work ok? 

It's coming out anyway as the aircraft will be VFR and if I take it down the IFR road I'll remove the VAC system altogether. 

In your second picture you should remove the zip tie on the steel mount tube.  They are destructive to steel.

Posted
3 hours ago, Denis Mexted said:

 

The tube connect to the intake tube as the VAC source.

image.jpeg.4b66974b4a987d1ca14573d4dd6d1ed2.jpeg

That's a Precise Flite vacuum backup.    As mentioned, you must run at partial power to get enough vacuum to keep the instruments running, about 6-7" below ambient.

These days a G5 or other electronic AI/HSI replacement seems a better route.

  • Like 1
Posted

I believe there is an Annual recurring AD for that standby vacuum. As has been said to use it you usually go full RPM and reduce MP to make the vacuum.

Better than nothing, but I don’t think they are well thought of.

This may be the AD or you could likely get there from here

https://www.federalregister.gov/documents/2005/06/07/05-10864/airworthiness-directives-precise-flight-inc-models-svs-i-and-svs-ia-standby-vacuum-systems

Posted

The standby vac has already been ditched. I want the aircraft to head bush for 1/2 hundred hours VFR. 

If I make it IFR I'll pull the entire dash and redo with a couple of G5's so I don't really need a standby vac. 

I just thought it was novel as I hadn't seen such a thing and I was told the previous owner over thought things aircraft wise. (Great Doctor) 

  • Like 1
Posted

I pulled the left aileron off this afternoon for a re-skin. 

Looking at the IPC, it just shows the aileron hinge as a unit part and not the bearing part numbers. What's the trick here? 

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Posted

Torrington PN4 bearings.  You’ll have to warm the hinge fitting in order to press the bearings out and the new ones in.  On some of them you can remove the snap ring and the seal and then repack the bearing.

Posted

Does anyone have a brake down of the Service Bulletins? 

I've done a spreadsheet of AD's but don't have a spare day to tabulate 250 SB's.

Specifically I'm looking for the fuel tank spar corrosion SB.  

Posted
41 minutes ago, Denis Mexted said:

Does anyone have a brake down of the Service Bulletins? 

I've done a spreadsheet of AD's but don't have a spare day to tabulate 250 SB's.

Specifically I'm looking for the fuel tank spar corrosion SB.  

The search function on the Mooney website for service documents changed awhile ago, now it’s totally messed up. Sadly you have to search through almost all of them to filter down to your F model.

Posted

Yikes. That may have to wait until I get some overnights again. 

Now I'm early days on this, and in learning about the Mooney, so forgive this question.

But as it looks like I'll be changing some T/P/M cables out anyway, can I ditch the airline style throttle quadrant and have them mounted on a vertical surface like I see on other models?

Posted
1 hour ago, Denis Mexted said:

Yikes. That may have to wait until I get some overnights again. 

Now I'm early days on this, and in learning about the Mooney, so forgive this question.

But as it looks like I'll be changing some T/P/M cables out anyway, can I ditch the airline style throttle quadrant and have them mounted on a vertical surface like I see on other models?

Some of us prefer the quadrant and think it's weird when somebody wants to remove it.  ;)

It's apparently a fair amount of work to change it.   Somebody here did it before and I think there's a thread, iirc.

Posted

Ha. I thought it would free up some room.

I am trying to read this website for an hour a night. But I can't find anything talking about moving the brake reservoir from behind the firewall to the back of the rear cabin bulkhead such as happens in the J model.

Cheers.

Denis.

 

Sorry, I must have been tired heading off to bed last night. Edited the above to make sense. 

Posted

How does someone make a silk purse out of this?

I'm thinking of de-riveting and anodising. But that might be fanciful thinking as I've not consumed half a day on the phone going around in circles. 

Also the seat back adjust winders, and maybe even the rudder peddles the same. IMG_1226.jpeg.3c7966716d56478aa695c82d371daf6c.jpeg

Posted

And what is it with bloody bearings on this aircraft. It's as though someone set out to put as many bearings in, with the most obscure part numbers, and kept it a secret from Dr Google. Torrington control surface bearings are impossible to find.

The IPC (Fig 29-018) shows this as a 'Rod Control'.  And although the bearing numbers are clearly visible 'the net' comes up a blank. 

I assume this is a common wear linkage in the rudder system?

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Posted

Mooney took many standard rod end bearings and welded them the 4130 tube to make their own control rods.  That is a simple one, look at the landing gear rods under the belly which are necked down at each end.  Beautiful but expensive.

Posted

Denis- Glad to have you around- Welcome

I was able to meet with many of the folks from AMPA a few years ago They are a great bunch of folks to be associated with.

You need to meet up with them. They have quite an association that supports Mooneys

They have the special tools sometimes needed for out airplanes also for rent. 

Do yourself a favor a prioritize meeting up with them.

 

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