2021-01-09, 02:30 PM
After a bit of testing with my multimeter it seems to draw 1.4-1.5amps spinning with no load. Fingers adding friction brought it up to about 5 amps before my fingers couldn't stand it. When I hold the spindle with a pair of pliers to completely stop it and briefly connect power it shows about 11amps.
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It is probably ok with the standard controller for that motor then.
10 tooth pulley is not very efficient. The smallest I would consider is 16 tooth, but I prefer 24.. then I 3d print larger pulleys like 180 or 240.
How many turns does the wheel rotate?
your rudder appears unbalanced.
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It is probably ok with the standard controller for that motor then.
Quote:Google netted me the info that they are specced to run at 4200rpm. How much reduction would you reccomend? One idea I had was attaching a 10 tooth pulley to the motor and a 120 tooth pulley to the center cap of my wheel, with a continuous MXL belt, which I can relatively easily order from robotics stores online. Would this potentially be enough reduction?If you have two stages of that. This would give you 144:1 reduction which would be about right if it actually spins 4200 rpm at 12 volts unloaded. Is there any way you can determine the rpm?
10 tooth pulley is not very efficient. The smallest I would consider is 16 tooth, but I prefer 24.. then I 3d print larger pulleys like 180 or 240.
How many turns does the wheel rotate?
Quote:The other idea if this motor isn't suitable is could you point me to a part number of a good windshield wiper motor thats not too hard/expensive to track down at the local to me auto shops.You can use just about any windshield wiper motor. They typically have 2 windings, one is 60rpm the other about 90. This you can reduce down to get 15-30 rpm you need to turn the wheel.
As for rudder shape a picture speaks a thousand words:
your rudder appears unbalanced.