What are these?

[gevertex]

They came with the plane, but haven't found a use for them yet. They look like tops, but maybe they are something else? Any ideas?

[hammdo]

Jack points maybe? — may have something they inset into…

-Don

[PT20J]

Jack points. Remove the wing tie downs and insert them in he holes between the wing and the jack cup.

[gevertex]

2 minutes ago, PT20J said:

Jack points. Remove the wing tie downs and insert them in he holes between the wing and the jack cup.

Good to know, thanks. I would have thought jack points are threaded.  These have smooth shafts. They spin perfectly like tops :D.

[1980Mooney]

53 minutes ago, gevertex said:

Good to know, thanks. I would have thought jack points are threaded.  These have smooth shafts. They spin perfectly like tops :D.

Here are some slightly different ones but also with smooth shafts. I guess Mooney didn’t want you to fly with them in. 

 

[EricJ]

2 hours ago, gevertex said:

Good to know, thanks. I would have thought jack points are threaded.  These have smooth shafts. They spin perfectly like tops :D.

You can get them threaded with a tie-down replacement from Lasar.    They're actually kind of nice:

https://lasar.com/tie-downs/tie-down-jack-point-combo-ss-tie-down-wing
 

[IvanP]

+1 on the Lasar jack points/tie down combo @EricJ mentioned above. The factory jackpoints require removal of the tiedowns every time you need to jack the plane up. It is relatively easy for someone to crossthread and strip the threads in the wing when replacing the tiedown (happened on my plane before I bought it and I had to helicoil one hole when installing the Lasar points). The Lasar points are mounted once and there is no need to remove and reinstall them. 

One slight disadvantage of the Lasar points i s that you need a jack with narrow pad, or proper adapted. Meyer jacks have large pad and could bend the tiedown on Lasar points if used witout proper adapter. Alpha jacks work fine. 

[201er]

16 hours ago, gevertex said:

Good to know, thanks. I would have thought jack points are threaded.  These have smooth shafts. They spin perfectly like tops :D.

Wait till you find out how much those tops (dreidel if you're jewish) cost, you won't be spinning them and playing games any more!

[gevertex]

1 minute ago, 201er said:

Wait till you find out how much those tops (dreidel if you're jewish) cost, you won't be spinning them and playing games any more!

I'll tuck them away safely. IT does look like there are some alternatives out there:
https://www.aircraftspruce.com/catalog/topages/bogert30M-MO.php

[LANCECASPER]

32 minutes ago, gevertex said:

I'll tuck them away safely. IT does look like there are some alternatives out there:
https://www.aircraftspruce.com/catalog/topages/bogert30M-MO.php

It's a good idea to keep them in the airplane. If you have problems when you are away from home and the airplane needs to be on jacks you'll need them. It was part of Mooney's "Fly-Away Kit" with every airplane they sold.

[Fly Boomer]

8 minutes ago, gevertex said:

IT does look like there are some alternatives out there:

Those look factory to me.

[EricJ]

1 hour ago, gevertex said:

I'll tuck them away safely. IT does look like there are some alternatives out there:
https://www.aircraftspruce.com/catalog/topages/bogert30M-MO.php

One of the rare cases where the Lasar jack tie-downs are a better deal than the alternatives.   With the lasar parts you just leave them in since it includes a loop for the tie-down.   Mine haven't come out since I put them in about five years ago.

[Pinecone]

For the Lasar ones, do you use some Loctite to make sure they stay in?

[201Steve]

In a pinch, a carriage bolt with washers will work. 

[dkkim73]

Arrow heads for hunting marshmallow rabbits at Easter?

More on topic: The lasar kit has two... What do you use for the nose? 

D

[EricJ]

8 minutes ago, dkkim73 said:

Arrow heads for hunting marshmallow rabbits at Easter?

More on topic: The lasar kit has two... What do you use for the nose? 

D

The CG is ahead of the wing jack points.    Many people tie the tail down (or tie it to a weight) so that the nose comes up when you jack the wing up.    The fun part is that this is controversial and there really are no "approved" ways to do it, because the "approved" methods have since been shot down by Lycoming and Mooney.    On most Mooneys there is no third jack point, so tying the tail down is a common way to do it.

Edit:   Lifting the nose with straps around the motor mount frame is probably the other most common way to do it.

[dkkim73]

15 minutes ago, EricJ said:

The CG is ahead of the wing jack points.    Many people tie the tail down (or tie it to a weight) so that the nose comes up when you jack the wing up.    The fun part is that this is controversial and there really are no "approved" ways to do it, because the "approved" methods have since been shot down by Lycoming and Mooney.    On most Mooneys there is no third jack point, so tying the tail down is a common way to do it.

Edit:   Lifting the nose with straps around the motor mount frame is probably the other most common way to do it.

Thank you, Eric! I'd wondered about getting the plane re weighed at some point (instructor said the BEW might be over stated). I imagine that might complicate it. 

[EricJ]

1 minute ago, dkkim73 said:

Thank you, Eric! I'd wondered about getting the plane re weighed at some point (instructor said the BEW might be over stated). I imagine that might complicate it. 

It's not a big deal.   I've weighed Mooneys and the hardest part is getting it level with the weight on the scales.   Mooneys are normally pitched up on the ground, but they need to be level on the scales, which usually means taking the air out of the nosewheel and shimming up the scales under the main wheels.    The jacking part is relatively easy. 

[IvanP]

2 hours ago, dkkim73 said:

Arrow heads for hunting marshmallow rabbits at Easter?

More on topic: The lasar kit has two... What do you use for the nose? 

D

Long body Mooneys have a third hoist point under the engine mount on the left side. To teh best of my knowledge Lasr does not have the jack point for the nose. It is my understadning that Mooney had a special jackpoint for the nose, but it did not come with my plane and I could not find one anywhere so I had an adapter fabricated for it.  However, the original Mooney jackpoint will fit the nose hoist point Alha 24 in jack works well under the nose. 

[LANCECASPER]

6 hours ago, IvanP said:

Long body Mooneys have a third hoist point under the engine mount on the left side. To teh best of my knowledge Lasr does not have the jack point for the nose. It is my understadning that Mooney had a special jackpoint for the nose, but it did not come with my plane and I could not find one anywhere so I had an adapter fabricated for it.  However, the original Mooney jackpoint will fit the nose hoist point Alha 24 in jack works well under the nose. 

Here's a picture of what would have come with your M20M when it was new:

https://www.dropbox.com/scl/fi/jvhp84b7xhi3m9f2eb25r/jack-point-M20M.jpeg?rlkey=aenndms7kafbhbgwo30wjcp5i&dl=0

 

[IvanP]

4 hours ago, LANCECASPER said:

Here's a picture of what would have come with your M20M when it was new:

https://www.dropbox.com/scl/fi/jvhp84b7xhi3m9f2eb25r/jack-point-M20M.jpeg?rlkey=aenndms7kafbhbgwo30wjcp5i&dl=0

 

Thanks. What I had made is pretty close to this.

[1980Mooney]

14 hours ago, Pinecone said:

For the Lasar ones, do you use some Loctite to make sure they stay in?

I installed the Lasar jack-point/tie-downs on my plane over 20 years ago without any Loctite. They have never come loose.  No issue.

[LANCECASPER]

21 minutes ago, 1980Mooney said:

I installed the Lasar jack-point/tie-downs on my plane over 20 years ago without any Loctite. They have never come loose.  No issue.

Same here. I’ve put them on a few Mooneys and they’ve never come loose.

[Pinecone]

Thanks.