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Unread 03-04-2007, 12:11
Jared Russell's Avatar
Jared Russell Jared Russell is offline
Taking a year (mostly) off
FRC #0254 (The Cheesy Poofs), FRC #0341 (Miss Daisy)
Team Role: Engineer
 
Join Date: Nov 2002
Rookie Year: 2001
Location: San Francisco, CA
Posts: 3,082
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Re: Robot doesn't turn in high gear

Having seen 1647's drivetrain this weekend, I feel obligated to reply.

Their machine has a 6WD configuration with four custom 8x3" wheels with roughtop tread in the middle and rear, and unpowered omniwheels in the front for support.

I can't comment on the ratios they are using, but I WILL say that I noticed a few things when they were running. One, their right gearbox had a big bend in one of the plates (from what I can't guess). I pointed this out to a team member but I don't think they did anything to fix it.

Two, their machine makes a terrible noise when turning. I think that this is a byproduct of the aforementioned dent and possibly grease/chain tension issues.

But all in all, their middle and rear wheels are VERY close together and I really don't see why they would have issues turning. I don't think that changing the motors will make a huge difference - I'm willing to bet that the problem is in the gearbox, greasing, and chain tension.

That said, I loved 1647's machine, and they were a fierce competitor in the playoffs!