Quote:
Originally Posted by glennword
Have you thought about utilizing the tapped hole in the end of the VP output shafts? you could either use a 1/4-20 screw and somehow clamp on the sensor shaft that way, or you could drill it out, and put a tapped setscrew hole in the side of the shaft to lock onto the sensor shaft.
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The problem I'm facing is that the absolute encoder/potentiometer needs to rotate with the module 1:1. The only solution I have been able to come up with is to have a separate series of gears originating from the VersaPlanetary at the same ratio as the belts, but I've run into found a few issues with that (stemming from the short VersaPlanetary output and/or vex and andymark gear thickness). I'm trying to keep as much as possible contained within the plates that make up the body of the module (and I'm trying to go no higher than 1.25" from one to the other). I'm sure there are a lot of ways around this I haven't thought of... [EDIT] I could use a motor other than the BAG motor with a lower RPM and have 1:1 pulleys turning the module. Then mount the sensor right on top of the VersaPlanetary
Quote:
Originally Posted by anthonyttu
A tension system for the belts. It could be very difficult to assemble without something. Also you might want to look into sliverthin bearings http://www.silverthin.com/ They are a few X more expensive then the ones you used but can be worth it with the weight and size. |
Hmm... I was told that properly spaced pulleys wouldn't require a tension system :/ I guess I'll get looking into how that's done. As for the bearings, do you have a ballpark estimate for the prices they offer? I like the weight and look of them, but the bearings I've found are only $19.
Even if my team actually decides to go through with this and build it (which I'm almost certain they won't), we're probably not going to use it in competition because of the technical problems that undoubtedly go along with swerve.
I was wondering if anyone had any thoughts about holding the pivot yoke to the rotating module using screws (8xM5). Its not something I've seen done, so there's probably a reason...