Tried the di2 Jamis... Not sure i'm sold on this electronic lark. Definitely seemed efficient shifting on the front, but felt a bit sloppy on the rear, making a bit of grinding noise- this could be just a case of it's poor life as a test bike for people like me though. However i assumed that it's vaunted as being self-correcting.
Tempted to borrow one from wimbledon evans so i can give it a proper go round the park rather than in traffic.
It's not self correcting, the big plus is that once setup correctly it simply stays that way.
The front mech trims automatically depending on where you are on the block at the back so you don't get any chain rub on the front mech cage.
When it's setup correctly it's pretty much silent apart from the "kzzert" noise at the front.
Under load the rear shift can fire in with a bang- although I suspect that that is amplified by my bike.
It's not self correcting, the big plus is that once setup correctly it simply stays that way.
The front mech trims automatically depending on where you are on the block at the back so you don't get any chain rub on the front mech cage.
When it's setup correctly it's pretty much silent apart from the "kzzert" noise at the front.
Under load the rear shift can fire in with a bang- although I suspect that that is amplified by my bike.