Quote:
|
Originally Posted by Some Guy
ok, i have a demand for an output rpm of 4800, and I was wondering if the fisher price motor would be good enough with gear reduction down to this speed. Is torque higher if i use the fisher price motor alone, or is it with the gearbox. As you can see, the rest of my team members (3 of 'em) and I are rookies. I don't even understand what mNm means. If higher mNm means more torque, than the motor alone has higher torque? Also, how do the units progress for torque (what comes after/before mNm) and i would also appreciate if someone could link me to a site with basic electricity facts, about watts, amps, atc., since i don't know what those terms mean in real life. I'm really sorry if i'm asking a lot, but any and all help is greatly appreciated. Thank you, on behalf of team 1514.
|
As the folks who have already posted have said, you get more torque with the gearbox, but more speed without. As far as getting a speed of 4800rpm, you might try opening up the FP gearbox, taking out the first gear, and just using it with the motor. We were doing some calculations earlier this week, and the reduction between the motor and the first gear should get you somewhere in the neighborhood of 4500-4800rpm. (I forget the exact number that we figured.) Not only will that gear mesh with the gear on the FP motor shaft much better than something you can get off the shelf since they're meant to go together, but the gear weighs almost nothing because it's made of plastic, which is always nice. The inside of the FP gearbox is a little disgusting, but that's probably the best way to get what you're looking for.