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Unread 28-12-2013, 14:47
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DampRobot DampRobot is offline
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AKA: Roger Romani
FRC #0100 (The Wildhats) and FRC#971 (Spartan Robotics)
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Re: Some Versa Chassis Questions

Quote:
Originally Posted by Kevin Kolodziej View Post
Maybe I'm missing something, but it seems as though the WCP DS 2 CIM gearbox does not have room inside for sprockets/pulleys inside the gearbox. Using the WCP DS - Dual Speed Base Kit step file from the Vex website, there is no room on the output shaft inside the gearbox for pulleys or sprockets. A couple ways off the top of my head to solve this:

1. Modify the 3/8 hex shaft (I assume this is the "Standard Input Shaft" listed in the included items?) to be longer and use longer standoffs to gain the necessary room.

2. Do not modify anything but use additional standoffs and/or structure to space the outer plate of the gearbox away from your chassis rail.

Your solutions may vary.

Will there be layout drawings posted for the new gearboxes at any point?

One other thing I was surprised to find once I finally got a chance to tinker with the files is that there is less than 1/32" ground clearance for the 2 CIM gearbox (3 CIM is likely similar) when using the 3.25" Versawheel:

Attachment 15670
I'd betcha that that's the standard version of the DS gearbox. There's a "WCD" version with room inside for your sprockets or pulleys or whatever. It also includes a wheel truck.

We did a mod similar to what you described in #1 for the offseason, in order to turn a standard DS into a WCDish DS with space for only one more output sprocket. It was fairly simple to do, but requires a lathe. Of course, if what you really want is the WCD DS, then you should buy the WCD DS.
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