Originally Posted by
fietsbob
As I see it , front shifters shove the chain from one plane to another. the chain ring being a disc with teeth on its edge.
Never touched any Di2 stuff, this area does not spend that kind of money on bicycles ..
Braze-on FD means , pretty much leave it as is , or sell the bike and get something that better suits your needs..
since you are un satisfied with what you have.
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I don't think that could have possibly been more unhelpful lol, I'm sure there are plenty of other people here on Di2. electronic DA is actually far superior to mechanical in my opinion, as long as you are open to trying it.
Originally Posted by
gregf83
Can't help on the Di2 problem but why not just use a 14-28 cassette?
I think that's what I'm going to do
Originally Posted by
rm -rf
Ultegra CS-R8000 11-speed is available in 14-28. (many online stores don't stock these. A little hard to find.)
It's a straight block from 14 through 21:
14 15 16 17 18 19 20 21 23 25 28
I use this for my fast-for-me group rides, since it has close shifts from 16 through 25 mph. The downside is having to shift 4 or 5 cogs when shifting the front rings (but that's fast and easy with Di2). And spinning out at 30 mph.
I'll also combine it with the 5 large cogs from an 11-32 if there's steep hills:
14 15 16 17 18 19 20 22 25 28 32
~~~~~~~~~~~~
The 14-28 with 34/50 chainrings. 36/52 would be about 1/2 shift higher gearing (a 4% difference). At 100 rpm, 52-17 is 24.0 mph, 50-17 is 23.1 mph.
Chart from Mike Sherman's Gear Calculator. Here's the link to this setup, with a 50 vs 52 comparison:
14-28 and 36/50/52
Originally Posted by
gregf83
There is an 11-speed Ultegra 14-28 cassette available.
Originally Posted by
ThermionicScott
I spent a couple of idle moments on Universal Cycles' website the other day and was pleasantly surprised that you can get 14-25T or 14-28T Shimano cassettes in 9-, 10-, and 11-speed. Good thing for juniors and those of us who don't need super-tall gearing.
Thanks for all the helpful responses about the 14-28 Ultegra cassette, I think I'm going to go with that