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@Isaak570 posted:

Please note for the hole 3mm you need to drill just a little large to receive the head of countersunk screw.

It depends of the diameter of the head of your countersunk screw. For me it is 5,5mm. The head of the countersunk must not flush from the adapter plate.

Do you mean the head of the screw must be flush or below the surface of the adapter plate?

Pat, can you have a couple of these ready for me at York?

@harmonyards posted:

I’m guessing our new found friend is from overseas,….if he’s willing to share his motor swap plate in a drawing, I can surely duplicate it over here ……still curious how he installs the gear on the motor shaft,…..ain’t like those Mabuchis shafts are exactly strong,…..they’ll bow in a heartbeat,…..

Pat

You must drill the hole of the worm with a turn machine with precision exactly to the diameter of the axle of the motor.  You must have no mechanical play.

After you fix the worm on the axle with thread lock strong.

@Isaak570 posted:

Sorry my English is poor, how can I say that, the head of the screw must be to the same level of the plate

No apology necessary!  Your English is miles better than second language I'd attempt!

Like I said, I think your were basically trying to say the screw heads had to be flush or below the surface of the plate.  I just figured I'd clarify that for anyone reading along.

Thanks a heap for doing all the heavy lifting on this and providing the drawing,

@Isaak570 posted:

You must drill the hole of the worm with a turn machine with precision exactly to the diameter of the axle of the motor.  You must have no mechanical play.

After you fix the worm on the axle with thread lock strong.

With a 2mm shaft on the motor and the 1.98mm hole in the worm, I would think some heat on the worm and just pressing it onto the motor shaft would do the trick.  Why do you have to enlarge the worm hole?

An adapter plate can be made with simple tools. You can get aluminum and brass disks on the auction sites or just google aluminum disks or circular plate if you don’t have some handy to use as an adapter. I am using two different motors but the idea is the same as mounting holes are different.

These will help layout your holes. The center head is the key. Scribing a line in two directions will determine center.

66CEA60B-E26A-4A2D-8512-AF4DA1624F39

Use a center punch where the lines cross. Then use the dividers to measure the radius of the mounting holes on each motor and rotate it around center.

F07D694E-0F44-4F07-A934-B4C9A0232A84DD46C9FC-2E6A-4EF6-8D06-53A33D8572B4

Use the center punch at the crossing points of the circles. In this case I used the two lines at 90 degrees to each other but they can be at any angle as long as the holes are far enough apart to accommodate the screw heads.

Drill the holes and use a countersink bit for the flathead screws.



01FB1932-755C-4B04-A3D6-1A1D68F97A34

I used a lead weight from a brass engine as it was handy.



Pete

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  • 66CEA60B-E26A-4A2D-8512-AF4DA1624F39
  • F07D694E-0F44-4F07-A934-B4C9A0232A84
  • DD46C9FC-2E6A-4EF6-8D06-53A33D8572B4
  • 01FB1932-755C-4B04-A3D6-1A1D68F97A34
@Norton posted:

An adapter plate can be made with simple tools. You can get aluminum and brass disks on the auction sites or just google aluminum disks or circular plate if you don’t have some handy to use as an adapter. I am using two different motors but the idea is the same as mounting holes are different.

These will help layout your holes. The center head is the key. Scribing a line in two directions will determine center.

66CEA60B-E26A-4A2D-8512-AF4DA1624F39

Use a center punch where the lines cross. Then use the dividers to measure the radius of the mounting holes on each motor and rotate it around center.

F07D694E-0F44-4F07-A934-B4C9A0232A84DD46C9FC-2E6A-4EF6-8D06-53A33D8572B4

Use the center punch at the crossing points of the circles. In this case I used the two lines at 90 degrees to each other but they can be at any angle as long as the holes are far enough apart to accommodate the screw heads.

Drill the holes and use a countersink bit for the flathead screws.



01FB1932-755C-4B04-A3D6-1A1D68F97A34

I used a lead weight from a brass engine as it was handy.



Pete

Yeah!  Exactly what I have used! For the plate, the thickness is 2mm and I used my turn machine to cut and dress the plate.

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