A discussions about motor cartridges that was started in this thread: Personal Vex Team Quotes - #2199 by 1422_WI Would it be better to gear up 200rpm or gear down 600 rpm? Advantages and Disadvantages ?

The 600 rpm cartridge has one planetary stage, that has a 1:6 ratio (3600/6=600) while the 200 rpm cart has two stages, 1:6 and 1:3 (3600/6 /3=200). Thus it’s more direct to gear down from 600 rather than gear up from 200

3.25" wheels have a circumference of 10.21". For each 1 degree of rotation (without external gearing), you get 0.028 inches of linear movement. For 4" wheels, each 1 degree of rotation will get you 0.035 inches of linear movement. For reference, the legal thickness of polycarbonate for Vex is 0.06…

[image] seenSeal: something to do with slop To try to explain slop: Slop is when a motor turns 5 degrees, but 4 of the 5 degrees are used to tension a chain or move an axle in a lock bearing to a point where it has to turn the wheel/sprocket. The slop is wasted motion. If a chain and sproc…

Jess is replying, we’ll see if she has any wisdom on this

[image] 16688B_Oregon: Jess is replying, we’ll see if she has any wisdom on this :flushed: I don’t think cartridge matters too much, just make sure the speed is something you can control. There is plenty of things you can do to mitigate slop outside of cartridge that will affect slop more …

[image] Personal Vex Team Quotes 8 motor 600rpm direct drive with omnis is overkill EDIT: Yes thats a quote. [image] Personal Vex Team Quotes I kid you not, one kid on my team build this, and geared it up slightly. I was kinda stipud. lemme see if I had some pictures of it. once I built…

Generally, it is a good idea to stick with green motors. Unless you need to do a quick task like making a ring intake then use the blue motors. While speed is something you want, too much of it is bad for drivetrains as it makes your bot weaker compared to other bots so you can get pushed around. A…

The blue ones also have less torque i think so a heavy load will put a lot of stress on the motors I always use green direct or green geared up because there’s more torque for things like carrying mogos up a platform

imo blue > green since theres less slop and slightly lighter. Using blue cartridges generally means you’ll have to gear up, which is also good because slop is reduced. Gearing down 200 for extra speed also means increased slop, which can reduce autonomous precision.

Drive Motor RPM cartridges discussion

VEX V5 General Discussion

1422_WI November 9, 2021, 11:32pm 11

once I built a 25x25 bot with 600rpm 4m direct omni drive
that was fun to send down the halls