So my team have chosen to use the climber in a box for this years game with red lines motors. The only issue is the motors do not seem to be able to hold the robot at max power. We are using two of these of these hangers with a 16:1 gear ratio for both motors which I believe may be the problem because the site recommends 48:1 gear ratio motors . But I am not mechanically inclined so I am not exactly sure of the problem.
are you saying your problem is the robot fall back to the ground after you stop driving the motors?
If so there are a few options:
- increase the gear ratio
- add a mechanical break onto the robot for example a ratchet wrench
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The problem is we are unable to get off the ground completely when motors are at full power. I was wondering if it could still be the case of needing to increase the gear ratio.
I think the additional gear ratios will increase your advantage, should make it easier for the motor to climb.
yes, without knowing the exact spec of your robot, weight etc. etc. It would seem like you may need more gearing, what are your amps limits set too? I have never used redlines but our Neos would defaulted to 40-amp limit, and we could not climb until we increased this. again, I am not familiar with the redline motors, so idk what their specs are but we can climb with a 6-1 ratio with two neos. So it more depends on your system, but it seems like more ratios might be needed.
I understand not being able to hold at a 16:1 ratio, but you can’t even climb off the ground in the first place. If you can get a brushless motor in there (neo, vortex, falcon, kraken), you can easily climb off a single one of them. If not, then you need a lot more reduction.
We currently climb at a 15:1 off a single vortex with no trouble.
Redline motors are designed for speed, not torque-they run at over 3X the speed of a Falcon or CIM and are air-cooled rather than enclosed (bad at being stalled). They make poor climber motors as being held at stall can damage them and they make less torque than a NEO or CIM. My team learned this the hard way in 2022 and ended up running our only two falcons to climb.
I would recommend switching to a Neo/CIM/Falcon, as their higher torque is better suited to climbs and holding robots.
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