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Jun 24, 2001, 08:47 PM
Addicted Member
miker's Avatar

B-2 motor != N20 mabuchi?

I have always assumed that the motors used in the Watt-age B2 were the same as the N20 motors. I have a reliable source that explains that these are not the same.

Can anyone give more information on the differences?

Here is the B2:

Here are the motors:

Here are the N20 motors:

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Jun 24, 2001, 10:27 PM
Just an average RC'er
Jim McPherson's Avatar
Well, I'm using those exact motors from allelectronics as direct replacements for the B2 motors. Working fine so far.

Jun 25, 2001, 08:00 AM
Addicted Member
miker's Avatar
Thanks for that data point. Do the motors look identical? Do you notice any reduction in thrust?
Jun 25, 2001, 09:51 AM
Strange Plane Central
frankenfoamy's Avatar
A quick look at the endbell tells you that they are not N20.
The thrust is similar but the N20PN pulls almost twice the amps an gets hot as compared to the B2 mystery motor.
The N20PA is anemic.
The N20s have wire brushes. B2?
Jun 26, 2001, 07:17 PM
Just an average RC'er
Jim McPherson's Avatar
Yes, frankenfoamy is correct, I just compared the two motors and the B2 motor is not the same.


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