Quote:
Originally Posted by s_forbes
Allen,
Thanks for all the good and open info on this prototype, it's great! We are emulating this design for another shooting prototype, and noticed that the 1:1 gearbox generates heat very quickly. Does your transmission do this as well? I suspect the bearings in the output shaft don't really like to spin at 15,000 rpm. (in fact, we actually released a little bit of magic smoke from a 550 just by spinning up the 1:1 transmission several times in quick succession)
If I had one gripe about the vexpro planetaries, it is that the motor is not indexed very well in the plate that it mounts too. This can lead to binding if teams aren't careful assembling it. That aside, I love these things!
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Glad to help,
That's one of the reasons we are using the BAG motors. I have heard they are better at dealing with heat than the Big CIMs. We've been running a 1:1 for a lot of tests over the last two weeks and they have been rock solid. A student even had a 1:1 BAG motor in a stall condition for about 30 secs (Frsibee caught in the shooter) and it didn't seem to do anything except get hot. The gearbox shaft felt hotter than the motor.
You do have to be careful mounting the motors, make sure you are following the directions on the VEXpro website. It's pretty simple to get a good fit since the motor shaft is doing the piloting.