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OK, I thought the 'encoder' was an optical sensor like what tracks the movement on the old mechanical mice. Thats what I was hoping it was at least...
~Mike
Hobby stores that specialise in radio-controlled models usually have a range of good motors to choose from. Many stores are operated by owners that are also modellers and can give excellent advice.
I went back to the RC car shop and returned the big motors I had. He gave me the smoothest motors he had and they still 'cog' about 6 times per revolution. I shall continue to look online as there are no other hobby shops that would have motors in my area. If anyone knows some good high quality motor supply site, please let me know.
~Mike
Pittman motors sells motors motors for servo apps - very smooth but they are expensive - something like $50 each for the ones I've used. It might be worth giving them a call and asking if they have any inexpensive motors. Maxon also sells servo motors.
How does this Pittman look to you? It seems to have all the requirments I need and 1.75Amps Peak which means I should be able to use my little H-Bridges. It is one of their LO-COG models so it will have very little cogging at low speeds. https://www.electro-tech-online.com/custompdfs/2005/01/GM8712-11.pdf
Perfect, then everything matches. I hope those little motors (a lot of their size is the gears) have enough torque, and that the gearing-down of their speed allows them to react quick enough.
Your other motors were 21 times more powerful. That's a big difference.
All the informastion and reviews I've found on these Pittman motors shows them as being very high quality. Being 7 pole motors, they have very high torque for their size. David Anderson, builder of nBot http://geology.heroy.smu.edu/~dpa-www/robo/nbot/ uses these motors, although I think he uses a different gear ratio, but I think it'll be enough.
Motors are on the way.
~Mike
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