Wanted pn 470002-8 FAIRING TAIL CONE STINGER RH 1967 M20F 6700046

[Bobaran]

I need the part covering the tail cone gap. 

Bob

[charlesual]

I have one of those. From an F. $75 free shipping or meet me a KJYO or mooney summit next month.


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[EricJ]

That's pretty easy to make.    A sheet metal shop or ambitious individual can fab one.    Take the other side as a pattern, leave it undrilled, and borrow a drill strap from an A&P or home builder to drill the holes. 

[Bobaran]

13 minutes ago, EricJ said:

That's pretty easy to make.    A sheet metal shop or ambitious individual can fab one.    Take the other side as a pattern, leave it undrilled, and borrow a drill strap from an A&P or home builder to drill the holes. 

Where would I buy this type of aluminum? And did you mean borrow a drill press? Thanks Bob

[EricJ]

34 minutes ago, Bobaran said:

Where would I buy this type of aluminum? And did you mean borrow a drill press? Thanks Bob

If you use 2024-T3 aluminum of the same thickness you can't go wrong.   You can buy that at aircraft spruce or many other places.

A drill strap, or strap duplicator, lines up holes with the piece in-place so that you can drill the hole to match the work.    They're very easy to use.   Hold the piece where you want it and use the strap to drill the first hole, put a screw in that hole with enough slop so that the strap can line up the next hole, etc.  Like this:
 

 

[Amateroy]

21 hours ago, EricJ said:

If you use 2024-T3 aluminum of the same thickness you can't go wrong.   You can buy that at aircraft spruce or many other places.

A drill strap, or strap duplicator, lines up holes with the piece in-place so that you can drill the hole to match the work.    They're very easy to use.   Hold the piece where you want it and use the strap to drill the first hole, put a screw in that hole with enough slop so that the strap can line up the next hole, etc.  Like this:
 

 

Nice thanks for this info.

[Aerodon]

I'd rather make a new one than have to deal with a half worn out one with the mounting holes in the wrong place?

Aerodon

[N201MKTurbo]

I have one that looks just like yours. 
 

I went over and sweet talked the local shop and they let me use their sheer and brake. It took 5 min to make a new one. 
 

It took a year to get it properly painted…

[N201MKTurbo]

On 8/4/2024 at 12:35 PM, EricJ said:

If you use 2024-T3 aluminum of the same thickness you can't go wrong.   You can buy that at aircraft spruce or many other places.

A drill strap, or strap duplicator, lines up holes with the piece in-place so that you can drill the hole to match the work.    They're very easy to use.   Hold the piece where you want it and use the strap to drill the first hole, put a screw in that hole with enough slop so that the strap can line up the next hole, etc.  Like this:
 

 

When I made mine, I just match drilled it with the one from the other side. It fit perfectly. The only difference is the direction of the bend.

[jsgro]

On 8/4/2024 at 7:39 PM, EricJ said:

That's pretty easy to make.    A sheet metal shop or ambitious individual can fab one.    Take the other side as a pattern, leave it undrilled, and borrow a drill strap from an A&P or home builder to drill the holes. 

That’s correct Very easy to make, just slight difference but fits perfectly. I’m a home builder.

Edited August 29, 2024 by jsgro

[Bobaran]

I found the part online for $60.  Thanks everyone.   One salvage place wanted $275!    WOW!  Now I need to paint it.   

Mooney owners make sure you check the screws on this fairing as part of your walk around.  One missing screw can cause the fairing to tear off.

[Vance Harral]

9 minutes ago, Bobaran said:

Mooney owners make sure you check the screws on this fairing as part of your walk around.  One missing screw can cause the fairing to tear off.

As someone who also lost one of these cover panels in flight, I concur.

When we got the airplane back home after our event, we worked with our mechanic to install rivnuts in the fuselage, to receive the screws that hold these panels on.  Signed off as a minor mod.  Much more secure than the "screw only" technique, and no issues with loose screws or loss of panel in the 10+ years since.

[Bobaran]

1 hour ago, Vance Harral said:

rivnuts in the fuselage

Do you happen to have any pics of the rivnuts?

[Vance Harral]

I don’t have pictures of them installed in our airplane, no. But rivnuts are pretty simple devices, they’re just non-structural, hollow, threaded, plastic rivets: https://www.aircraftspruce.com/menus/ha/rivetnuts.html

You install them with a special, but inexpensive tool: https://www.aircraftspruce.com/pages/to/rivetnuttools/bluepneumatic12-03440.php

The installation process involves drilling the receiving sheet metal for the O.D. of the rivnut, then you thread the rivnut onto the tool, insert it into the hole, and gently squeeze (important not to overdo it). Then you unthread the tool from the rivnut

[Bobaran]

23 hours ago, Vance Harral said:

unthread

So...you then have a threaded receptacle,  but a scthreaded screw still has the potential to come loose? Thanks 

[Vance Harral]

7 minutes ago, Bobaran said:

but a scthreaded screw still has the potential to come loose?

Yes, but now we're talking about fine-thread (we used 6-32) machine screws going into 1/4" of plastic, threaded receiver; rather than coarse thread sheet metal screws that just go through two drilled aluminum sheets (with no nut plate on the back!)  The rivnut arrangement is considerably more secure.  It's been 10+ years since we did the work, and I've never found one of the machine screws backed even the slightest bit out of the rivnut.

[Bobaran]

On 8/30/2024 at 4:00 PM, Vance Harral said:

Yes, but now we're talking about fine-thread (we used 6-32) machine screws going into 1/4" of plastic, threaded receiver; rather than coarse thread sheet metal screws that just go through two drilled aluminum sheets (with no nut plate on the back!)  The rivnut arrangement is considerably more secure.  It's been 10+ years since we did the work, and I've never found one of the machine screws backed even the slightest bit out of the rivnut.

Great points! 10 years! That's awesome.