Is there an adapter to reverse a motor?

[JM1971]

I'm look for a way to reverse one motor without using 2 receiver channels or cutting up extensions.

Edited December 1, 2013 by JM1971

[S.I]

extension -> old style 9V cable -> extension with polarity reversed might work.

[Milan]

extension -> old style 9V cable -> extension with polarity reversed might work.

Not sure about that, PF cables can connect at only one position.

JM, maybe to add one line of gears, on one side 16t + 16t to one motor, and 8t+ 8t+ 8t to another motor.

[D3K]

Just use a polarity switch between the IR receiver and one of the motors?

Edited December 1, 2013 by D3K

[Alasdair Ryan]

Just use a PF switch...

[DrJB]

Just use a PF switch...

Very 'elegant' solution ... needs not be 'mechanical'.

[Alasdair Ryan]

Very 'elegant' solution ... needs not be 'mechanical'.

But it ts electrical not mechanical.....

[DrJB]

Exactly ... one more example where electrical can often be more 'elegant' 'effective' than mechanical (though less obvious).

Edited December 2, 2013 by DrJB

[Alasdair Ryan]

But it was obvious to me....

[DrJB]

hehe .... I'm a mechanical engineer, my first thinking was of course ... a 'mechanical' solution, which is typically what the Technic theme is about.

Though, per BL or other sites, that Pole Reverser is not a common part, unless of course you have 8297-1 / 8258-1 / 41999-1 ...

Edited December 2, 2013 by DrJB

[Junpei]

Yeah, mechanical things are cooler, what would GBC be if each model was operated by multiple NXT servos? Mechanical is much more elegant than electrical IMO.

[JM1971]

A balanced way to do this but the pf switch is just what I was looking for, nice.