Subject:
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Re: RC Motors
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 1 Oct 2002 14:01:55 GMT
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Viewed:
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526 times
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"Steve Hassenplug" <hassenplug@mail.com> wrote:
> A couple people have pointed out how the new motors on the RC Buggy
> seem to be very fast. So with the Workshop 3D challenge coming up, I
> wanted to see how they compare to the Mindstorms mini-motors. • [snip]
>
> The results: the RC Buggy motor did not perform as well as the mini
> motor. While they returned about the same readings for the first test
> (forward 2 seconds) the speed of the RC motor dropped off quite a bit
> for the other two, while the mini motor only dropped a small amount.
>
> I admit, this isn't a complete test for the motors, but it was enough
> to convince me that the good old mini-motors are the best way to go.
Thanks Steve, very useful info. My friend Marco Berti inspected the
inside of the new RC motors (he's an expert of small electric motors) and
told me that they are of a cheaper kind than the Mindstorms ones: they
draw more current but return less torque. Your experiment seems to
confirm his opinion.
BTW, it seems to me that the RC motor has slightly different gear ratios
on its two cross-holes, one rotating about 3/4 the speed of the other.
Ciao
Mario
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Message has 1 Reply:
 | | Re: RC Motors
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| (...) I believe those are just two stages of gearing down. The hole by the motor goes at ~4x the final hole (used by the buggy wheels). Actually, I'm sure TLG made it exactly 4x, not just close. That could be very useful, if you want different (...) (22 years ago, 1-Oct-02, to lugnet.robotics)
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Message is in Reply To:
| | RC Motors
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| A couple people have pointed out how the new motors on the RC Buggy seem to be very fast. So with the Workshop 3D challenge coming up, I wanted to see how they compare to the Mindstorms mini-motors. To test them, I started by hooking a rotation (...) (22 years ago, 30-Sep-02, to lugnet.robotics)
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