Last night, when setting up our new Neo550s for our intake, we discovered that the press fit GT2 pulleys were able to press on VERY easily (with one hand). Holding the bell of the motor, we were able to spin the pulleys on the shaft easily by hand.
After measuring the shaft diameter and pulley bore diameter I went to REV’s website to compare the measurements to their drawings. That’s where I found this note:
We used some sleeve retainer that we had (unfortunately not one of the ones recommended by REV) and after sitting for about an hour the pulleys were no longer able to spin around the shaft. Hopefully this solution stands up to use/competition.
I have not seen anything about this issue here, or any communication from REV to teams that may be affected. So, I figured I would make a post to raise awareness of this potential problem for teams.