Electronic & Hydraulic Shifting (Di2, Ui2, customisations)

Ok, initial impressions.

Setup:

It's really, really easy. It felt too easy- you attach the mechs, battery and shifters, then plug in the wiring loom and it all works pretty much.

On the front you just set the limit screws, on the rear you back the limit screws out, then shift into fifth, press the "setup mode" button, then make sure that the mech is spot in in terms of position, and hit "exit setup mode". Then simply set the limit screws and you are done.

I zip-tied the wiring harness in place when putting everything on the frame, then used the Di2 wire cover stickers to run the wires properly.

This took some considerable time to do neatly- although I also ran an SRM harness which added to the time by a fair amount.

One issue I ran into is that the external harness has a switching block which is designed to fit in place of the bottom bracket cable guides which it supplants.

On my frame this was located with a fairly large hole, and kept in place by the wires- which meant that the Di2 block (which is designed to screw in) could not be attached.

I glued it into place with a glue gun, but will be drilling a suitable hole, tapping it, and using an M5 bolt to hold the switching block in place in future.

Operation:

I've only used it on the turbo once so far, but it was extremely snappy in it's shifting.

I found that it would shift the front under power, but it definitely preferred you to back off slightly as it shifted, rather than maintaining 320 watts and just hitting "shift".

I cannot get the chain not to rub on the front mech currently, when in the lowest gear- the front mech will not go toward the centre line of the bike sufficiently.

I will adjust it so it is slightly angled and see if this fixes it.

I'm going to take the bike to Richmond Park on Sunday if the weather is good, and will report back on what it is like after that.