when it's so warm and sunny outside? Well, for a start, limited time. And otherwise? Well, we'll get to that in a second...
So I've started on spin for the season - hoorah! Or something. I skipped the PG Calibration and decided to just go with last year's setting - I'd soon find out if that was ridiculous or not.
Started out all well and good - couple of HCLRs, then the first BGSS. One or two 'clicks' during that, but no problems. Second BGSS - second stroke on the right leg, and bang - off comes the chain on the outside of the big ring. Set it back up, spin it around a few times under moderate pressure to make sure it's sitting snugly, and try again. Same result. Go through it again and switch back to the left leg leading - same result. Front der appears to be aligned, and unlike last time, I can't detect any wobble in the chainring. This is why I didn't want to go out and do hill sprints - in case this happened. It's not an uncommon occurrence, whether doing uphill sprints or maximum power downhill or flat sprints in 53x12 (once even in 53x14, if my memory serves me correctly) and I've skidded along the road, sitting on the top tube with cleats skidding along the ground at ~60km/hr once too often.
I'm stumped as to the cause - I doubt it's because I'm putting out 2500W. Possibly I'm putting out 1500W at 114kg, but that surely shouldn't be too much if the bike's set up correctly. So presumably it's something in my setup. Might have to book a 'fit' session with Carl when I have some dosh, see if we can work it out.
Anyway, I continued on, doing the PGRSes and the rampup, finishing with HCLRs. Well, one MCLR, anyway. Clearly once again I've lost endurance, but my experience is that that should be back as I progress along with spinning, so I'm not fussed with that.
Stats? I have none. I'd noticed, and then forgotten because I've been doing all of my riding outside and not bothering with cadence, that the battery in my cadence/speed sensor has died. Obviously GPS speed isn't much help indoors on the trainer! I'll get that sorted sooner or later.
The same thing was happening to me with the chain jumping off the big ring. A couple of the links in my chain were bent meaning the chain wouldn't sit on the big ring with perfect alignment.
ReplyDeleteGot a new chain -> problem solved.
Hmm... chain is a bit old, I'll check it out!
ReplyDelete