pm25-mv z axis power feed

Yes- I suspect there are many sizes and applications for fiber reinforced nylon gears- just have to stumble on one that will fit. I am in not hurry, so will alert you if something good pops up.

BTW: I think I already have an functional and effective Z axis motor drive without much fabrication . - Its a little red neck, but what do you expect? Pretty hi torque, and don't need a transformer or pot for speed control.

a- PM25mv Motor Z axis motor drive.JPG


PM25mv Motor Drive.JPG
 
redneckmachinist said:
https://ridingmowerparts.com/go/ebay/371557725885

Size: 16 Tooth OD: 1-5/8" . PN: 860-3

Description:​

Quantity 3 Replacement Aftermarket Briggs & Stratton Plastic Starter Gears
for Aluminum and Plastic Flywheel Gear Engines.
Gear will fit many models of Briggs Engines.​
Click to expand...

Those should be strong enough to last a long time!! A good way to test your skills to make a adapter ring for the inside of the gear to mill for a 5/8" shaft and keyway and a matching gear to fit whatever the motor drive shaft happens to be. (In my case a 3/8" D shaft). Just about can't beat the price!!
 
mrjbinok said:
Those should be strong enough to last a long time!! A good way to test your skills to make a adapter ring for the inside of the gear to mill for a 5/8" shaft and keyway and a matching gear to fit whatever the motor drive shaft happens to be. (In my case a 3/8" D shaft). Just about can't beat the price!!
Click to expand...

Yes- still looking at options, but these are designed to work a flywheel of mower motors. I was thinking of epoxying 2 together for a 1" wide gear surface, so would need a total of 4 for both z drive and motor shaft. Adapter spindle could be turned on lathe, and could even attach roller bearings to the motor shaft to show off?

https://www.ebay.com/itm/New-Starte...518513?hash=item53f825e4b1:g:IWoAAOSw63FaEGml

The 12 volt starter motor is cheaper than a windshield wiper motor, but not sure if RPM would be to high to control? orientation would be similar to Tin Barn's drive, and it may have enough torque. Looks to be permanent magnet motor with ground, so have to isolate the motor from column to use a double throw toggle switch.

-------
Cheaper by the dozen?

https://www.ebay.com/itm/10-STARTER...699073?hash=item3ac3f4bb81:g:1LoAAOSwbcJXPf3K

Lifetime Supply?

https://www.ebay.com/itm/25-STARTER...846546?hash=item3ac3f6fb92:g:lDIAAOSw71BXPgIY
 
I'm not sure that a starter motor would have the ability to reverse.... I'm sure that it would have plenty of torque, but yeah speed would be a challenge to gear down to something usable.
 
Yes- Starter motor has positive pole, and grounded frame body.

Don't know if you used positive ground and hit pole with Neg if the motor would reverse- I'm not an automechanic.

If it did work that way, would be bugger to double insulate the mounting frame and work in a double pole reversing switch.. but just an idea- as briggs starter motor can be had for $25, and wiper motors look to be $65

If it could be double insulated, would not need gears and could direct mount the motor shaft to the z axis handle shaft with a single rubber/plastic connector joint?

Think I'm heading for auto salvage yard for wiper motor, and the briggs flywheel gears... But I have time
 
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