TapeMeasure Climber Dropping after Match End

[philso]

Originally Posted by CalTran

Usually teams cut off half of a ratchet wrench.

Usually tools are not left in the robot on purpose

[dirtbikerxz]

Originally Posted by philso

Usually tools are not left in the robot on purpose

And when they are, you either find a random wrench on the field.... or very baaaad things happen.

[philso]

Originally Posted by dirtbikerxz

And when they are, you either find a random wrench on the field.... or very baaaad things happen.

Yes!

We look forward to seeing your robot scale at Lone Star. Safe travels.

[dirtbikerxz]

Originally Posted by philso

Yes!

We look forward to seeing your robot scale at Lone Star. Safe travels.

And who knows, we might just do a repeat of last year and alliance up again See you there.

[philso]

Originally Posted by dirtbikerxz

And who knows, we might just do a repeat of last year and alliance up again See you there.

And we get past Semi's this time?

[Kevin Sevcik]

We're braking our tape-measure lift with a piece of rubber tubing attached to a Firgelli linear servo. We're using a WCP DS gearbox, so we have easy access to the gearing. The servo just pokes the rubber tubing into the mesh of one of the gears. The only annoying thing is we currently can't leave it engaged during the lift because during retraction it gets sucked into a different mesh and pulled off.

Still, if you can identify a mesh inside that toughbox nano that you could jam with a piece of tubing, you might be able to cut an access hole in the side and do something similar.

I've got a second linear servo coming in today or tomorrow because someone (Joshua Bryant) slightly broke our original, and it's been acting mildly flakey. I could give you the mildly flakey one, but it'd be mildly flakey.

[who716]

Originally Posted by dirtbikerxz

What material are you using as the ratchet (is that what its called?...)

We had these solid steel ring hanging around that we cut off our gearboxes every year. We machined ratcheting slots into this and attached it directly onto the shaft In which the winch pullies are on. Then we attached a servo to a piece of metal so that when the winch is pulling down the ratchet rides over the servo but when it goes up just a second the ratchet locks in. The spring is simply to prevent the robot from falling if power is cut to the servo for any reason specifically the end of the match and we didn't fully climb the spring overrides the servo and locks the ratchet

[Cam_Team 2619]

If you would like some help with a pneumatic disc brake, our team used one to stop our lift from backdriving last year, and therefore I have a fairly good understanding of how it works.

[PeeDiddy]

A simple way to eliminate back drive would be to toss a worm gear (looks like twisty pasta) in the gearbox.