I think that I spun my wheel at a start this morning. I peeled out, broke loose.

I was coming from a stop and I started then I pumped hard and something slipped. It was not chain or crank related. So I thought maybe I just spun my rear wheel. I was pushing really hard, I may even have been standing. I had my son on the rear, so 40+ pounds of kid and seat. It is pretty awesome.

I was on the left or just to the left of the left tire track, so maybe some oil helped. The road was dry. Unless I turned my cassette without the free hub body turning