26-01-2014 14:47

joelg236

Re: pic: VexPro out of stock? No problem.

Looks cool, I can't comment on how well they'll work. Why did you make 6 of them though?

26-01-2014 14:54

David Guzman

Re: pic: VexPro out of stock? No problem.

We are making 3 robots

26-01-2014 14:55

Andrew Remmers

Re: pic: VexPro out of stock? No problem.

Pretty standard for 1251 if you ask me.

26-01-2014 19:51

pwnageNick

Re: pic: VexPro out of stock? No problem.

I believe we had a gear in the gearbox for our drive last year that VEX didn't offer as a dog gear (they now offer it this year). So we did the same thing you did here. We did not have a single issue with our gearbox last year so I think you'll be fine.

-Nick

26-01-2014 20:20

magnets

Re: pic: VexPro out of stock? No problem.

That's really neat. How did you guys hold the gears in place while machining them?

26-01-2014 20:22

Cory

Re: pic: VexPro out of stock? No problem.

Hard anodize will have zero benefit on those surfaces with the number of cycles you will see in FRC.

26-01-2014 20:33

David Guzman

Re: pic: VexPro out of stock? No problem.

Thank you guys. That's what I figured anyway, but wanted reassurance from someone who has done it.

As for how we held them, we made a fixture plate with a protrusion that had a nice fit on the gear counter-bore. We then had a bolt pattern around the outside diameter of the gear and clamped it down with the head of the screws. You can see in the teeth of the gear where we clamped. We did multiple holes so we can put the same pocket on any size gear up to 60 teeth using the same fixture.