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Re: quick question
Quote:
Originally posted by Joseph F
the 3.6 to 1 gear ratio is for the no load, max rpm correct? Wouldn't varying loads and speeds alter the necessary ratio to keep them in sync? What happens if they do go out of sync, how badly will it effect driving?
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The 3.6 ratio is for no load and might not be the 'perfect' ratio to use under load conditions, but it should be close. Last year we used drill and FP motors connected 1 to 1, not be the 'ideal' setup, but it worked pretty well. We used the same pwm inputs to the speed control for both types of motors. If you have a large mismatch, you might need to use different pwm outputs and 'throttle back' the motors that are geared higher.
There is no 'synchronization' of the motors that they have to be in. Mainly, you want both types of motors to run in the same portion of their rpm/torque/current curve, and you should avoid gearing too high. It is good to go fast, but not if it means breakers tripping and smoking motors.
If you gear the motors in question 3.6 to 1, the machine should drive fine if the design would drive ok with any other motor arrangement.
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Team 233, "The Pink Team," 2004-present
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