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What are these?

gevertex

By gevertex
in General Mooney Talk

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gevertex Rising Star

gevertex

Posted
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Posted
  On 11/25/2024 at 2:39 AM, PT20J said:

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

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

1980Mooney Grand Master

1980Mooney

Posted
Posted
  On 11/25/2024 at 2:44 AM, gevertex said:

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

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

 

EricJ Grand Master

EricJ

Posted
Posted
  On 11/25/2024 at 2:44 AM, gevertex said:

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

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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
 

  • Like 2
IvanP Community Regular

IvanP

Posted
Posted

+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. 

  • Like 1
201er Grand Master

201er

Posted
Posted
  On 11/25/2024 at 2:44 AM, gevertex said:

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

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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! :lol:

  • Haha 1
LANCECASPER Grand Master

LANCECASPER

Posted
Posted
  On 11/25/2024 at 7:27 PM, 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

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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.

  • Like 2
EricJ Grand Master

EricJ

Posted
Posted
  On 11/25/2024 at 7:27 PM, 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

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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.

  • Like 4
EricJ Grand Master

EricJ

Posted
Posted
  On 11/26/2024 at 3:03 AM, 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

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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 Mentor

dkkim73

Posted
Posted
  On 11/26/2024 at 3:12 AM, 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.

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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 Grand Master

EricJ

Posted
Posted
  On 11/26/2024 at 3:30 AM, 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. 

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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 Community Regular

IvanP

Posted
Posted
  On 11/26/2024 at 3:03 AM, 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

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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 Grand Master

LANCECASPER

Posted
Posted
  On 11/26/2024 at 5:56 AM, 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. 

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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

 

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