29-10-2013 17:16

donkehote

Re: pic: Found these on our quadrennium robot checkup

Marcus, wahappen!

No lube?

29-10-2013 17:21

AndreaV

Re: pic: Found these on our quadrennium robot checkup

Those toughbox nano's are from 2011, and the mecanum robot they are in is the school's favorite demo bot. It gets a lot of use, they probably needed more lube at some point.
RIP little pinions..

29-10-2013 18:46

ekapalka

Re: pic: Found these on our quadrennium robot checkup

Quote:

Originally Posted by AndreaV Those toughbox nano's are from 2011, and the mecanum robot they are in is the school's favorite demo bot. RIP little pinions..

29-10-2013 18:53

MrForbes

Re: pic: Found these on our quadrennium robot checkup

Grease...regular maintenance....make it a way of life.

29-10-2013 19:13

mman1506

Re: pic: Found these on our quadrennium robot checkup

Quote:

Originally Posted by AndreaV Those toughbox nano's are from 2011, and the mecanum robot they are in is the school's favorite demo bot. It gets a lot of use, they probably needed more lube at some point. RIP little pinions..

29-10-2013 20:29

BBray_T1296

Re: pic: Found these on our quadrennium robot checkup

Once we assemble (and grease) a TB nano, we just run a strip of duct tape around the whole thing 2-3 times. "seals" the ends and keeps stuff out. Of course, it may be harder to remember to grease the boxes, as you can't visually check them easily

30-10-2013 07:23

Taylor

Re: pic: Found these on our quadrennium robot checkup

Quote:

Originally Posted by mman1506 Oh, I thought it was older than that. They were fairly well lubed after we rewired the robot last year but a lot of grit had collected in the open gear boxes. I'm going to chalk it up to all those joystick mashing grade 8's.

30-10-2013 08:05

IndySam

Re: pic: Found these on our quadrennium robot checkup

Quote:

Originally Posted by Taylor I believe the AndyMark nanotubes were first available for the 2011 season.

30-10-2013 20:56

donkehote

Re: pic: Found these on our quadrennium robot checkup

Might be a good idea to put a grease fitting in the case if you guys want to keep using them long term. Just for the sake of maintenance.

30-10-2013 21:19

DampRobot

Re: pic: Found these on our quadrennium robot checkup

We saw a similar problem in a WCP 11T pinion this offseason. It turned out that in our gearbox, the CIM itself was flexing around because we removed one of the spacers that held it in place. The flex created enough separation in the gears for the teeth to occasionally slip past each other, wearing the teeth over time. We replaced it with a new 11T and put the spacer back in, and never had problems again.

So, if you see tooth wear like this, it isn't necessarily a grease problem.

30-10-2013 21:25

Gregor

Re: pic: Found these on our quadrennium robot checkup

Quote:

Originally Posted by donkehote Might be a good idea to put a grease fitting in the case if you guys want to keep using them long term. Just for the sake of maintenance.

30-10-2013 21:37

mman1506

Re: pic: Found these on our quadrennium robot checkup

Quote:

Originally Posted by DampRobot We saw a similar problem in a WCP 11T pinion this offseason. It turned out that in our gearbox, the CIM itself was flexing around because we removed one of the spacers that held it in place. The flex created enough separation in the gears for the teeth to occasionally slip past each other, wearing the teeth over time. We replaced it with a new 11T and put the spacer back in, and never had problems again. So, if you see tooth wear like this, it isn't necessarily a grease problem.