Drive motor options

[daveimi]

Do they do Banebots stuff with 3/8 output shaft that you could put RoboChallenge wheels on? I'm not into the keyed shafts etc.

[Liftoff]

Yes I originally had the 24v motors, but had them replaced by the 18v ones, so they should be ok. I had the output shaft of the motors machined into a square drive, and in turn that engaged into the track drive wheel which is supported on both sides by ball bearings...that is there's no side loads on the motor.
Will post a couple of pics tomorrow when I'm back home for better understanding.

Regarding the banebots, do they only do 16:1 ratios? Think that's too fast! What do you guys use?

[Max]

I presume you weren't using the Gimson 24v motors as these had big problems with lots of people's motors failing under relatively little load? If you were using them then I'd suggest changing to the 18v motors

[Liftoff]

Thanks Ellis, what I was thinking was of reducing the motor shaft diameter and press the input gear on to it, then mount it directly to the gearbox just like the original motor (maybe with some minor machining) But if the banebots are of similar size but with more power then I'll have a look at their specs to compare... I think it will pay off to invest a bit more in a better matched motor rather than end up burning up motors not suited for the job.
Something else, don't know if it has any effect on what happened, the gearboxes I run are 1:36 ratio...

[typhoon_driver]

banebots seconded

[Ellis]

The problem with coupling a more powerful motor to the gearboxes, which would be possible with an adapter plate of some sort, is the added torque and power going through the gearboxes. They won't last long, with enough resistance to almost burn out a motor on the output, and a motor that will just keep on spinning on the input, I imagine the drill internals will get eaten.

You may need to look into some 775 16:1 Banebots motors and gearboxes, or similar. They aren't cheap (US-only, too) but they'll be more suited to the job. The gearboxes are also roughly 40x40, so with some new bolt holes they might be able to just drop in. Whether they'd arrive soon enough for you, I don't know. For similar money there's the Magnum 775s, also US based.

[Liftoff]

Hi there, need some advice/suggestions regarding drive motors for my feather build.

As some might know I'm using track drive on my machine and the motors I'm using are the gimson Gr02 18v. I used these motors as their compact size and little weight makes them ideal.

Unfortunately when the first test drive was done the motors overloaded and almost burnt! Don't think the issue is with the motors themselves but rather with the tracks...they do put some load on the motors even when free wheeling, which increases as you steer.

What I'd like to know is if there's any motor I could get with more power than the Gr02 but which could be coupled to the Gr02 gearbox and of the same length. Diameter up to 55mm is ok, larger than that will not fit....