Gobilda Motor Adapter

This thing is a 1:1 motor coupler for a Gobilda motor to turn it into a 6000 rpm motor, specifically for the new and old 312 rpm yellowjacket motor and the new 435 rpm yellowjacket motor. I don't remember which version goes with which motor, so you may have to try a few of them out for your motor. the main difference is the gear size, but the one for the old 312 rpm is smaller in general. THESE ARE LEAGAL IN THE DECODE SEASON, BUT YOU HAVE TO TAKE OFF THE STICKER THAT COMES WITH THE MOTOR FROM THE GOBILDA FACTORY, OR ELSE THEY ARE ILLEGAL! The FTC decode rulebook says that you cannot modify the internal components of a motor, but they are referring to the electronics of the motor, and not the gearbox. If you do modify the gearbox, the rulebook says that you can't have the label from the factory. Gobilda sells a version of these but they are $5 CAD to buy, and the printed versions do the same thing with the added bonus that you can use the old 312 rpm ones too.

Here is a YouTube video on the instillation of the coupler: https://youtu.be/KAoqqA0JHpQ To use these, what you are going to have to do is take out the gearbox of the motor, which is the black part of the motor. Note these only work for the new and old 312 rpm motors and the new 435 rpm motors from Gobilda. To install them, you have to:

Take off the 8 black screws on the gearbox case.
Pull the black gearbox case off the motor. Gears will probably fall out, and they are pretty greasy, so keep a paper towel handy.
Pull all the remaining gears out. The only one that needs to stay is the one on the very base of the motor.
Wipe off any extra grease on and around the base gear and the 3 prongs connected to the output shaft.
Align the gear on the motor coupler to the base gear and put it on. it can sometimes be quite tights, and some force is usually required. During this this step you will know if you printed the right one.
put the gearbox case back on the motor, with the printed piece on.
Put the output shaft with the 3 prongs into the 3 holes of the coupler. If the holes feel like they are too small, take a philips screwdriver and place it on the hole, and turn it back and forth until the base of the hole is big enough to fit the 3 prongs in.
put the screws for the gearbox case back on.

I highly recommend using ABS to make these out of because they will strip in the gear area. If you cannot print ABS use PETG. DO NOT USE PLA! your motor will break in the middle of a match. Use 5 walls and 80-100% infill.

Credit: Team 22092 Cyber Eagles Jade
Gobilda version: https://www.gobilda.com/1-1-conversion-kit-for-19-2-1-ratio-gearbox/