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Re: BaneBots
People seem to really get caught up in xyz motor being so fantastic, and yxz being crud.
People need to think of motors purely as power sources, with some varying factors. The torque and speed output obviously determine the power, and are useful characteristics to know.
The other useful characteristics, are it's thermal mass/ability to dissipate heat, it's friction/resistance which cause it to generate heat, and then obviously any sort of special notes about the motor (current limiting breakers built in, a built in gear reduction that adds friction, etc...).
I know this is a rough approximation, and there are some "lies" here, but it's a decent way for begginners to understand.
Assuming the 775 had no manufacturing defect, the FP, 550, and 775 were actually all pretty $@#$@#$@#$@# similar in terms of power production. The 775 could be considered the "better" motor there as it is much heavier, and is much more capable of dissipating heat. One could argue the smaller motors are better, as they weigh less for the same power. It really comes down to what you need them for.
People also seem to assume the small motors aren't durable, which may or mot not be true depending on how you define durability. They certain can't handle high levels of repeated stalls, but you shouldn't design them to! They are very powerful motors, and can do a lot of work without ever getting hot if your system is properly designed. As Chris on 330 says, run them fast! which means high gear reduction, so the motor is spinning closer to free speed.
We picked hte 775s in all four places this year, and had some issues with case shorts. We had zero issues in terms of burning or damaging them. Assuming it stays the same, the 550's thru a cimulator will probably be our preffered motor.
I also forgot to mention that banebots does not make these motors. They are a standard sized motor (395/540/550, etc...) that many different manufacturers will make, for many different purposes. Within each size, there are commanalities in the shafts, mounting holes, etc... It's not rocket science to interface to any one of these gearboxes, considering the absurd amount of options on the market for them.
Last edited by AdamHeard : 10-06-2011 at 18:11.
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