what motor did you use(arm)
 

Hello, im wondering what motor your teams used for the arm, the cim or the window motor.

Re: what motor did you use(arm)
 

648 used the fisher price motor. It turned an arm, which was connected to another rod fixed to the arm. When the motor turned, the first arm raised the second, raising the arm, pretty much a large cam system. The arm had a telescoping feature driven by the banebots motor. We used the four small CIMS to power the drive system, and the window motors to turn the wheels in our swerve drive.

Re: what motor did you use(arm)
 

1714 used the Keyang window motor through a bane bots 56mm 12:1 transmission (the one meant for the cim). The motor worked great, but the transmission gave us problems all season.
For the second joint on our arm, we used a Nippon Denso window motor. We mounter the motor on the opposite side of the arm as the gripper to be used as counterweight. We ran a chain down the arm and used a 4:1 ratio. This section of the arm worked great all season.

Re: what motor did you use(arm)
 

108 used a globe motor on a 1.75:1 rack and pinion assembly to control the telescoping part of the arm and the other globe motor on a 30:1 worm gear reduction to rotate the arm. Although it was pretty slow, it was controllable and reliable. In fact, the arm assembly never failed through 3 competitions, it just never worked great to begin with :p . Hope this helps.
-Evan

Re: what motor did you use(arm)
 

Which arm? our first telescoping 1 used a fischer price through 64:1 42mm banebots. the second 1 used a globe motor with 2 sprockets and the rebuild of the second one now uses the fischer price through a lead screw it works amazingly well

Re: what motor did you use(arm)
 

1726 used the small Banebots motor and a 125:1 Banebots gearbox. this drives an 8:1 chain reduction, and the arm is mostly supported by a gas spring. it worked all season, and is still working (they're playing with autonomous programming now).

AJ R--I'm not at all surprised that you're having trouble with the 56mm Banebots transmission...think about what you are doing to it, you are driving it with a gear reduction motor that can put out way more torque than the transmission is designed to handle.

Re: what motor did you use(arm)
 

Gael Force used two FP motors this year, one for the lift and one for the extension. Both powered a ball-screw through repackaged FP trannies. The extension simply slide back and forth on bearings while the lift worked through a sliding four bar linkage.

Re: what motor did you use(arm)
 

364 used the small banebots gearbox with the default motor (mabuchi?), and we used a globe motor for our extension.

Re: what motor did you use(arm)
 

we used an AM Planetary Cim gearbox at 181:1. The arm can lift the whole robot.

Re: what motor did you use(arm)
 

Our first stage was a CIM and a 12:1 BaneBots gearbox, reduced another 1:3 (as I recall) through chain to the actual arm. The second stage alternated between a Denso and Keyang motor, although we never quite nailed that.

Re: what motor did you use(arm)
 

We used two Fisher price motors to move our two jointed arm, and then used a globe motor to rotate it and a window motor to open and close the claw. The problem with using a globe motor for the rotation was that it had no backdriving on it so we eventually broke the gear that was on the arm and had to lock the arm rotation half way through Curie.

Re: what motor did you use(arm)
 

One FP Motor (without original FP transmission) on a 64:1 BB transmission driving a 40:1 worm gear assembly for both the base and the arm.

BB RS540 motor in the 64:1 BB transmission that came with the kit for the wrist.

Re: what motor did you use(arm)
 

The Fischer price had more than enough power to move the arm. At our test days, I accidently snagged the corner of a tote full of tools and wire with our tube funnels on the arm, and when i tried to free it up, it flipped the tote over like it wasn't there. After competition, I was dinking around with the robot, and the arm was strong enough to lift the front of our robot off of the ground without a problem. For our wrist, we used the globe motors on a PID loop with a slight reduction.

Re: what motor did you use(arm)
 

1885 Used a window motor connected to parachute chord with no xmission/reduction in the pulleys to power a simple elevator. We then used the Globe motor for the "shoulder" joint and the 2 tiny motors (the ones that smoke if they're run for more than 20 seconds at at time) for the claw movement.

Re: what motor did you use(arm)
 

S.P.A.M had a 2 link arm with a grabber, this year. We used an F.P. for each link and an N.D. window motor for the grabber. We burned up a grabber motor or two during build and competition season.

Eric