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Unread 28-10-2014, 16:00
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Re: 2 Speed Gearboxes FPS?

Please show me good, real data for a COF of 1.3-1.5....

Quote:
Originally Posted by Oblarg View Post
If you want to push continuously with a 150lb robot with a high wheel COF (say somewhere around 1.3-1.5) without any danger of tripping the breaker, 5.5 is very reasonable. I saw a lot of ~5/15 splits for 6CIM drives at worlds. It is always nice to give yourself a bit of headroom. It's not so much of a sacrifice to lose a bit of speed on your pushing gear when you have a shifter and won't be moving any serious distances in that gear, anyway.

Of course, with a lighter robot or one with less grippy wheels or one that doesn't draw much power other than the drive, one can (and should) gear more aggressively.

For reference, our preseason drive (which, we hope, will also be our competition drive this year) is going to be geared for around 6/16 with roughtop wheels.
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