[billbo911]

Originally Posted by noa_n_f

We were planning on using two Banebots Rs775 with a planetary gearbox reduction of 256:1 to power our single pivot arm. The arm is a little less than five feet long with a light weight manipulator on the end.

However, banebots is out of stock for this gearboxes and even if they had them, the lead time is dangerous.

Are there any alternatives that we could use? Either a different type of gearbox or the use of the other motors in the kit. Would two window motors be powerful enough?

Any other suggestions would be helpful.

Without more specific information, it is hard to give accurate advice. What is needed is: how far is the center of mass from the pivot point, what is the weight at that distance and how fast would you like to rotate the arm.

With these values, an accurate calculation and recommendations can be made.

That being said, the FP motor and gearbox is quite sturdy and powerful as long as it is implemented correctly. As you can see in this thread, it is capable of 34 Ft/Lb of usable torque.