pic: This is our robot as of last night. Alot more should get done this week now that things are in place

[AdamHeard]

Originally Posted by Hachiban VIII

We did some tests with our 5lb. grabber on the end of an arm aprox. the same length as this.

One keyang motor was not able to lift it. After adding a spring, which took virtually all the load off the motor, the keyang could lift it with ease.

However, even without a load on the motor, a light tap on the end of the arm was capable of stripping the gear inside the keyang. Further investigation found that the plastic gears inside these motors have very small teeth and are easily damaged.

Just a warning...

The keyang motors aren't that powerful when compared to the others in the kit.

A FP motor (or the BB RS540, which has less power) into the 256:1 42mm gearboxes from Banebots make an easy to integrate motor with lots of torque.

Or take a hint from 968/254 (60 too maybe?) and swap you FPs into the drive to free up two small CIMs to use on the arm.

[=Martin=Taylor=]

Originally Posted by AdamHeard

The keyang motors aren't that powerful when compared to the others in the kit.

A FP motor (or the BB RS540, which has less power) into the 256:1 42mm gearboxes from Banebots make an easy to integrate motor with lots of torque.

Or take a hint from 968/254 (60 too maybe?) and swap you FPs into the drive to free up two small CIMs to use on the arm.

Yeah I forgot to metion that we had a reduction off the keyang...

Unless you can make a worm gearbox FPs and CIMs are backdrivable.

[AustinSchuh]

Or take a hint from 968/254 (60 too maybe?) and swap you FPs into the drive to free up two small CIMs to use on the arm.

I specifically remember 254's driver telling me after last year that they were NEVER going to use the FPs in the drive train again. The FPs caused them too much trouble.

[AdamHeard]

You're completely right. I remember 968 telling me the same thing...

Too many hours of robotics and too little sleep causes me to forget things....