A fair sized smidgin of bad luck

[steingar]

Just got off the phone with Roger Tucker, the chief mechanic at OSU.  Either he or his mechanic will come down and fix the airplane.  The fat lady hasn't yet sung, but it looks like Oshkosh is back on.

[Marauder]

Just got off the phone with Roger Tucker, the chief mechanic at OSU.  Either he or his mechanic will come down and fix the airplane.  The fat lady hasn't yet sung, but it looks like Oshkosh is back on.

I hope you're right!

Earlier this week I saw the fat woman warming up! I was getting worried for you.

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[Guest]

We're all pulling for you.  I'd have to apply for a green card to come down and to it.  That may take a while.

Clarence

[bradp]

Shoot if my plane weren't in a thousand pieces my Id offer to ask my IA if we could buzz over, get you straight and get out of there in an afternoon before OSH.    

(Btw he has a home made prop jack that he uses for Moonies -  has been a C owner for ~40 years).   

((On a side note between my of-course-slower-than-mud interior project and family care, I won't be able to make Oshkosh this year.  I'm not sure how well I'd fare solo with a 2 year old camping.  She'd probably be playing in the unnaturally blue water by day 2)).  

[Guest]

1 hour ago, bradp said:

Shoot if my plane weren't in a thousand pieces my Id offer to ask my IA if we could buzz over, get you straight and get out of there in an afternoon before OSH.    

(Btw he has a home made prop jack that he uses for Moonies -  has been a C owner for ~40 years).   

((On a side note between my of-course-slower-than-mud interior project and family care, I won't be able to make Oshkosh this year.  I'm not sure how well I'd fare solo with a 2 year old camping.  She'd probably be playing in the unnaturally blue water by day 2)).  

Here's a copy of current jacking procedures, no prop jacks allowed.

http://www.mooney.com/en/si/M20-114.pdf

Clarence

[bradp]

2 hours ago, M20Doc said:

Here's a copy of current jacking procedures, no prop jacks allowed.

http://www.mooney.com/en/si/M20-114.pdf

Clarence

I am just going to invent a bubble wrap cocoon - there seems to be no good way of jacking.  Tail stress.  No prop jacks.  Stories of case cracks at the engine hoist point... The humanity. 

[Guest]

You could try one of those budget annuals where the plane doesn't get jacked up, then there is no danger of hurting anything.

Clarence

[steingar]

So I just got off the phone with Roger and the aircraft has been repaired.  Didn't know it was happening or I would have headed down.  Still, my Oshkosh trip is back on and I'm going to indulge my flying jones this evening. What a dumb thing to be stuck by!

[Hank]

Yay!! Good news. Glad it's taken care of.

At your next annual, hang out when the tires are removed and wheels disassembled to repack the bearings. Very educational if you've never seen it before. Just one of the many benefits of the Owner-Assisted Annual.

[Guest]

I thought that I heard angelic voices yesterday, Maurader please have them stop now.

Clarence

[Marauder]

I thought that I heard angelic voices yesterday, Maurader please have them stop now.

Clarence

I see fat people in your future.

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[Jerry 5TJ]

18 hours ago, Hank said:

At your next annual, hang out when the tires are removed and wheels disassembled to repack the bearings. Very educational if you've never seen it before. Just one of the many benefits of the Owner-Assisted Annual.

You're right, it's very informative.

 Even better than observing, do it yourself under the watchful eye of an IA:  I worked with McClellan Aviation at KSFQ on my Ovation's annual in late June, spending 4 days helping.  I pulled the wheels and we found the wrong grease and automotive bearings.  Installed new FAA-PMA bearings and races plus a liberal dose of Aeroshell 6 grease.  

 

 

[steingar]

So my bad luck needed one more go and got it last night.  I pulled out the airplane and flew it to the local field with the cheap gas to fuel up for the trip to Oshkosh.  The little fuel kiosk not only failed to give me any gas at all, but charged both my credit cards, issued fraud alerts and got both shut off.  Took about a half hour to resolve this morning.

On the  other hand, I had two really good landings.

[Hank]

That's a problem I haven't had yet. But I moved to a field with no fuel earlier this year, so I understand about going to get fuel. 

[Yetti]

6 hours ago, Jerry 5TJ said:

 I pulled the wheels and we found the wrong grease and automotive bearings.  Installed new FAA-PMA bearings and races plus a liberal dose of Aeroshell 6 grease.  

 

 

I would be interested to know the technical performance difference between automotive and PMA bearings

[Marcopolo]

The only technical performance difference I'm aware of between the two styles of bearings is the stamping /etching of FAA-PMA allow these bearings to pass IA inspection at annual.

 

Ron

[Jerry 5TJ]

The Timken bearings we found in all three wheels were perfectly fine, opined the IA, but then he added, "too bad they're illegal to use"

The new ones externally looked the same and are marked Timken just like the automotive versions, but do have the additional "FAA-PMA" marking.  About three times cheaper at the Auto Parts House site.  Hey, it's an airplane.

 

[MB65E]

When were they installed? I bet the factory used them. Unless they were changed,  I would have left them alone. I use the same grease in the mooney as Citation uses in their manual. All of the major wheel shops use SHC-100 grease. 

Many use A/S 5&6 for their bearings. I don't like how it separates and spits out when it's 110°. 

A/S22 is approved. It holds up better than 5&6. 

Best,

-Matt

[DonMuncy]

I have no idea about what the regs say. But if we can use generic fasteners, electric and electronic components, it would make a lot of sense to also allow the use of standardized bearings.

[MB65E]

Just now, DonMuncy said:

I have no idea about what the regs say. But if we can use generic fasteners, electric and electronic components, it would make a lot of sense to also allow the use of standardized bearings.

But that would make sense!

-Matt

[DonMuncy]

Sorry, how foolish of me, to forget the FAA was involved.

 

[Hank]

2 hours ago, Jerry 5TJ said:

The Timken bearings we found in all three wheels were perfectly fine, opined the IA, but then he added, "too bad they're illegal to use"

The new ones externally looked the same and are marked Timken just like the automotive versions, but do have the additional "FAA-PMA" marking.  About three times cheaper at the Auto Parts House site.  Hey, it's an airplane.

 

I had to replace my nose wheel,bearings 4-5 years ago. They cost almost TEN TIMES the automotive Timken parts . . .

[cnoe]

Though there's no way to verify it, the manufacturers "claim" that these aircraft bearings are held to much stricter tolerances than generic or automotive bearings. They are certainly correct in stating that landing gear bearings (that accelerate from 0 to ~2,000 rpm almost instantaneously, also with a shock load) endure a MUCH different environment than a car (which starts and stops MUCH more gradually). In this application I'll spring for the better bearing until somebody can prove there's no difference.

It's not quite the same as something non-critical like light bulbs and sheet-metal screws.

If somebody has better info please let us know.

[Jerry 5TJ]

2 hours ago, MB65E said:

When were they installed? I bet the factory used them. Unless they were changed,  I would have left them alone. I use the same grease in the mooney as Citation uses in their manual. All of the major wheel shops use SHC-100 grease.

This is a 2000 Ovation.  The logs show a MSC replaced the bearings a few years ago.   They may have bought them from Mooney; no parts source info was logged. 

[Guest]

An aircraft wheel bearing lives an easier life compared to an automotive bearing.  Re packed and inspected at almost every annual, no salty roads no dusty gravel roads,  no potholes.  When was the last time you replaced an automotive bearing and when did you last hear of one failing?

Clarence