Quote:
Originally Posted by RRLedford
DavisDad, regarding the VEX mechanum wheels, I am not sure if their square axle material is considered legal for FTC.
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Hi RRLedford,
I've been following your work in another thread. Nice work!
To be honest, it never occurred to me that the square shaft axle might be an illegal part. I'll have to look into this. Thanks for the heads-up.
We had initially planed to bore to 3/16" and make a hub, as I thought the VEX design would be prone to strip. After working with the system, I'm comfortable that it'll hold up; hope we can keep it.
Questions from a first year FTC team:
- Have you seen teams using the Matrix 9V motors? If so, was there an appreciable difference in power?
- Are you using the Tetrix motor controller internal PID control for encoders? If so, have you been able to use Tetrix motor controllers for position control? We haven't gotten this to work with Matrix.
- How important is power in FTC for blocking and shoving? The videos I've seen from early scrimmages don't have much "combat".
We custom weld aluminum structures as it's a lot of fun, quick and strong. Anyone interested in Al welding, I'd be glad to post on the subject. We've been MIG welding steel for a while, but had thought Al was difficult; not true with a "spool gun". The welder and spool gun set-up is about $1,000 equipment costs. The up side is that the Al stock is cheaper than vendor structural components. Welding is also good for prototyping as you can tack weld a design together more quickly than bolting and it's easy to grind away the spot welds for changes. We've yet to have a weld failure.
Thanks for the post