Mounting the drill motor

[Veselin Kolev]

As I've seen this done many different ways, I decided to start this thread to discuss the advantages and disadvantages of different methods of attaching the drill motor (without gearbox) to a custom transmission.

My own experience has been interesting. The drill motor mount we used was on MVRT 115’s swivel drive this year. Made from 3/4 inch solid Lexan, the drill motor is pressed in, and pins in the Lexan that go into the holes in the front of the drill motor to keep it from rotating. Not that it would, it was quite a snug press. Then, this Lexan “adapter” was screwed onto the swivel drive, making it actually really quick and easy to replace drill motors, provided you had a press (we used a vice).

All in all it was a good idea, nice and light, easy to maintain, never really failed. However, under unknown circumstances to me, one of these Lexan pieces broke. I highly doubt it was from running the motor, because it broke in the pits. Anyway, we had aluminum replacements, so we popped those on. Personally, I feel that these Lexan things were really good for their weight and size.

However, as I said earlier, this thread is for discussion of different methods, so end of my blabbing.

But… here’s how I’ve seen or think it could be done:
1. Thing that goes around it, screws down to clamp onto the motor
2. Sheet metal screws. Big ones.
3. Rivets that go into the holes on the motor