Barry rides R9150 Di2…
I have spent a lot more time on 9100 and share Dave's thoughts.
I absolutely adore the new mechanical groupset. Shifting is so
light and quick that it made me question the need for the new Di2
I have historically ridden a lot of the two previous Di2
groupsets (10 speed 7970 and the 11 speed 9070).
When we heard rumours it was coming out we all had ideas on what
improvements it was to have - would it be 12 speed, would it
(surely) be wireless?
Looking at the naming convention; one would think 7970 to 9070
was a big jump (from 10 to 11 speed, internal battery etc), and the
latest 9150 is more of an evolution than a revolution.
Which was an initial disappointment....
But I have had the new electronic groupset for a month now and
am super impressed. Clearly it shares much of the same drivetrain
parts (cranks, cassette, brakes, chain) as its mechanical brother
which is a very good start !
Everything is just a litte bit better, crisper and lighter.
The ergonomics are much better on the road shifters and
especially the TT ones…
Nothing leaps out in isolation - but together they make a
wonderfully solid race package. Shifting the front mech is super
quick, and the rear shift is amazing - sounds like a bolt from a
rifle as it rattles up and down the cassette.
The highlight of the new system is 'syncro shift' - which has
been taken from the XTR mountain bike groupset. Basically there are
three modes; manual, semi synchro and full synchro.
Of the two synchro modes semi is the most useful - and very clever
if you change front chain ring it will automatically change the
rear cassette as well to minimse the jump. So you don't have that
annoying thing where you hit a climb, go into the inner ring but
then spin out madly and then need to shift down 4 gears, and then
10 seconds later shift up again !
I know a number of staff at Bespoke prefer SRAM RED eTap but if
I had a choice I would go Di2 on the caliper bikes.