Thanks for your suggestion. We plan to release an adapter cable for compatibility with other N20 Reduction Gear Motor for this kit on Maker’s Supply. However, the motor in the kit will still be included.
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great ! actually cant use it with sh1 connector leds , and this motor dont fit the power distribution card .
I just got these in the mail today with the speed controller too - even at its slowest setting it’s too fast for me, and I didn’t realize there wouldn’t be a way to make to go clockwise instead of counter clockwise! D’OH! 
Maybe I can still find a use for them, but i’d love to slow them down even more if possible.
I do not know the actual speed, but, it looks like around 1 revolution per second.
You can use gears to change speed, either faster or slower, and you can also use gears to change direction.
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You can (in theory) pull out the wires and resolder them in the opposite direction. This would reverse the direction. Not the best solution, but it’d work for a one-off.
I used it with gears and set the controler at 3 v , its very slow now
Yeah, I was hoping to avoid using extra gears to slow it down, but that might be the only way. I’m looking for more like 1RPM or so. I tried putting two of the voltage controllers back to back and reducing them all the way down and it’s still too fast. 
Cheap brushed electric motors usually have their brushes on a cantilever spring that holds the brush to the commutator. These motors are designed to run in one direction only. If you reverse them, the force on the brushes goes the other way, pushing towards the cantilever spring rather than pushing away. That causes the brushes to chatter, reducing performance, increasing EMI, and causing the brushes to wear out faster. Possibly a lot faster (it depends on the quality of the motor).
I used to use really small (8mm diameter) brushed motors for some of my micro drones. They made both clockwise and counterclockwise motors for these. If you ran the motors backwards, they’d die about 3-4x faster than the motors running in the right direction.
There are brushed motors where the brushes are pressed by a spring that’s perpendicular to the commutator surface and they’ll run in either direction without a problem. But from what I remember looking at the power kit, the motors aren’t this type.
If you can reverse the direction with gearing, that’s a better choice IMO.
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Thank you for the insight here! I had no idea. Yeah, i’ll look into a gearing option for my prototypes then, unless they release a clockwise version
We need a speed controler for the motor of the rechargeable kit . It goes so fast ! Even with gears I wont be able to use it in my project . I need to go back to the other one with 4 battery and speed controler .