Finally got this baby dialed in after 5 short rides and was looking forward to stretching things out today. I had been riding around 15 miles per ride to work out fitment and get to know things. My first 5 rides were all in Manual Mode on the Di2. Coming from an Ultegra Roadlite, this bike has taken some getting used to.
My last ride finally felt like I’d nailed my fit, and today was a day off with a beautiful morning here in SoCal. I figured it was time to stretch things out, hit some light hills, and get comfy with the endurance side of this bike. I also decided to enable Synchronized Shift for the first time.
This is where I miscalculated. I’m using the factory gearing setup in the app, and figured that should be ok for me. I’m no pro, and I’m not riding the Pyrenees mountains out here. First hill, I start down shifting and prepping to come off the seat for the push and bang. Synchro shift hits the small ring and I go from a cadence of about 70 to 120 in seconds. I damn near fell off the bike. I slammed down on the saddle so hard that the VCLS cranked the seat down about two degrees. I saved myself with a quick up shift, but it was super sketch. Going back to the big ring was smooth as butter, but from big to small was a problem.
How can I keep this from happening? How do I need to set the app up so that when it hits the small ring it’s not such a violent change in resistance? Should I just stay mostly in the smaller ring? It happened a couple of more times, but I was ready for it and handled it ok. But the next 20 miles were damn uncomfortable with the seat at that angle.
Any tips and tricks are greatly appreciated.
by tasimm