Why are discontinued parts permitted for use in vrc? I believe they disadvantage newer teams which won’t have access to parts that would improve their robots.
To give an example, I want to create tracking wheels for odometry. Because of the low amount of space, I have to use single roller Omni wheels, the problem being that vex no longer sells them. Robotshop and robosource do not sell them either. I can’t technically make a post on the forum asking to buy them off someone because of R6 (whose merit I won’t discuss here).
Currently, I’m trying to dremmel a poor 2.75" Omni in half to fulfill the requirements. I’ll edit the post later with pics.
But why should teams that have parts that are discontinued not be able to use them? The rule as it stands seems to make perfect sense although I understand the frustration of not being able to get the part you would like anymore.
you’d probably have better luck with a hacksaw tbh.
but about discontinued parts, I don’t think they should be banned, mostly because if you really want those parts, you CAN get them (although it might involve pestering nearby teams to sell you some) and lots of them are very useful.
As I read it (and feel free to correct me if I’m wrong), that rule doesn’t prohibit use of parts bought second-hand on robots. Instead, it establishes a test for determining whether something is an “official part”: If it is or was sold by VEX as part of the EDR product line (as described in other rules), then it’s an official part and you can use it on your robot. That status doesn’t change if a part is sold second hand, and such a rule would be basically impossible to enforce anyway.
Isn’t the wheel going to be too thin to support that weight? And what about the bearings. In that case you would only be able to fit one bearing per wheel not two. Unless you also cut the bearings in half.
A position tracking wheel doesn’t have to support the weight of the robot, it’s simply a free spinning wheel with a potentiometer on the other end of the shaft. The wheel is also on a joint so it just hits the ground without having to support any weight.