...from an older 36D. I have a couple of these older 36D motors, the ones with no can mounting option, and the blank rear end with no magnet stop tabs. These ones use magnet stop "dimples" pressed into the rear of the can sides, and of course the end bells for these had the brushes riding directly on the plastic. Less than optimal, even for the original mild winds these things had...much less the likes of the later "3V" arms from (I think) Classic. To make matters worse, the ball-bushing was gone.
So what's a poor-boy gonna do? Hey...no problem. I know a guy who can make up gizmos, gadgets and thingamabobs! So I removed the original rotating bushing carrier and had at it. I made up a solid bushing adapter, this time one that would sit flush to the inside of the can for as much room down there as possible, and on the outside would include a groove for C-clip mounting.
To fit inside that, I needed a bushing for the weird size shaft these motors use. I took a worn 6MM x 2MM Mura oilite bushing which was too sloppy to work on a 2MM shaft and reamed it out to fit the FT36D shaft. I also thinned-out the very thick flange, and epoxied it "flange-side-out"...just because it made truing the bushing to the rest of the motor a little less fidgety. Because I'm paranoid, I made sure the new oilite isn't going anywhere. Now, instead of sloppy, it's a lovely close-but-not-binding fit.. I just had to clean up some of the solder that found it's way to the outside, and the look is pretty "factory".
Inside, this all sits flush...actually ever-so-slightly less than flush. I love it when a plan comes together!
Of course, the best part is how smooth an arm spins in the setup. After a while doing these things, there's a certain looseness to even an NOS Mabuchi...especially the big boys, with all that rotating mass. You spin this arm and it feels like a proper slot car motor. Watta concept!
Now I'll have to look at this thing and let it tell me where it wants to go, but I have a nice new end bell and am confident it will be a smooth motor that will benefit from this detail. A bit of prep work and I can send this can over to "the paint shop"