Di2 considerations and ponderings - yay or nay?

I agree with all of the above even though I have EPS.

One thing I will highlight is the lack of chain rub. I spent an age at the weekend on a sportive grinding up a long drag into the wind when I spotted another rider with a faster candace but with an obviously smaller cassette than me. A glance down confirmed that I was in 50-29 rather than the 34-29 that I thought! Sometimes that chain rub is a useful hint

I use Ultegra Di2 with both 10 and 11 spd wheels, spacer fitted to 10 spd cassette.

if the bike was Di2, could you use 10 speed wheels / cassette?
I'm aware a spacer is reqd for a 10 speed cassette but isnt the chain narrower too?

Thanks bobster, helpful thread and info. Can I just ask whether there is any residual chain rub with the auto trimming or whether the age-old cross-over issue has been resolved completely with the advent of Di2?

i to have two di2 10 speed and 11 speed
And 105 set up 10 speed compact 105 10 cassett triple

Do prefer the di2 with the 10 cassette scram powerdome X and 901scram chain

Have ultegra di2 on one bike and 105 5800 on the other. Love them both but di2 edges it for me. Shifting is so smooth and precise and I've had no issues mechanically or electronically in 2 years (cue meltdown). Hoods are a touch more comfortable too.

I have a number of friends with ultegra Di2 and all love it, so if you make the jump I'm sure you'll not be disappointed.

Having said that, I've no interest in it as I've never had an issue with mechanical ultegra, it's dead easy to maintain and cheaper to replace when things finally wear out or go wrong (commute big gets caked in muck!)

I have a number of friends with ultegra Di2 and all love it, so if you make the jump I'm sure you'll not be disappointed.

Having said that, I've no interest in it as I've never had an issue with mechanical ultegra, it's dead easy to maintain and cheaper to replace when things finally wear out or go wrong (commute big gets caked in muck!)

if you have the cash for Di2 would be daft not to.

When I witched from mech Campag to EPS then the difference is fantastic, I am sure the same applies to Shimano.

i have ultegra di2 on my workbike, 100 miles a week and used in all weathers and its been faultless

if u can afford a little extra buy the diagnostic kit aswell, allows you to customise shifting etc.. also handy if you do get a fault

dont worry about flatting the battery, just check the battery indicator before each ride, even if you forget the front mech will stop working first and you will get 50-70 miles from the rear mech (depending on how often u shift) then if u manage to fully flat the battery then the system will just stay in the selected gear so the bike can still be ridden

I've had it for about 3500kms and I love it. Battery not an issue, it did 2000km on the first charge and it's easy to check the charge level with the small control box. I check it every couple of rides just to make sure. For me it's the precision and near silence that I love and the fact that you just prod gently on the buttons, so little effort. I have another bike with mechanical and I don't enjoy it half as much.
Typically ride between 100 and 250km a week in all weather.

I would love Di2 and my frame has all the mounting points for it - but it's way over my budget. I have heard a stories about batteries running out of power on really long rides and non availability of some parts for earlier versions. How true I don't know.

I have mates who swear by Di2 but when it goes wrong, it's a trip back to the dealer..... In one instance, the unit failed in the rain and it was one gear all the way back home.
For me, it's out of my budget anyway but I prefer mechanical simplicity myself as I can always bodge a fix to get home.
Isn't Cancellera the only pro hold out against Di2 ?

I know my mates who have Di2 swear by it.

That said my mechanical ultegra never skips a beat either.

I have di2 it is so smooth easy to change gear and has been perfect in all weather including doing the torrential London 100 last year. Battery last for weeks without recharging I do a recharge twice a month. Get the battery which fits inside the down tube. Nice feature di2 has is multi shift - keep the button pressed and it changes up through the gears rapidly