DI2DI2

Ciyrus 5000

New Member
So I have now Di2 on by Turbo S.
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And the performance is very good.
 

Douglas Ruby

Well-Known Member
This is cool. What advantage does this give you over the default 11 speed Shimano XT? And why did you go with a close ratio road cluster instead of an 11-40?
 

James Kohls

Active Member
Very nice. Did you install it yourself? Any difficulties? Are you powering it using the Shimano's battery or the Turbo's? If Shimano's, where did you mount it?
 

Senseiwai

Member
WOW!!!! What component did you changed? Rear derailleur and chain of course did you change cassette and what gearings? Did you changed chainring also?
 

Ciyrus 5000

New Member
This is cool. What advantage does this give you over the default 11 speed Shimano XT? And why did you go with a close ratio road cluster instead of an 11-40?
This set up is better for me in 11 / 28.The circuit is now much quieter and much more fun. In 11/40 I did not need the last 3 pinion.
Very nice. Did you install it yourself? Any difficulties? Are you powering it using the Shimano's battery or the Turbo's? If Shimano's, where did you mount it?
Yes I install himself and no difficulties and yes is the shimano di2 battery.

What all did you replace and how much did it all cost?

I have changed Dura-Ace crank with bottom bracket, rear derailleur ultegra RD 6700 and Dura-Ace cassette cs7900 10fach with chain. The price with Di2 ca 800€
 

John Dombrowski

Active Member
This set up is better for me in 11 / 28.The circuit is now much quieter and much more fun. In 11/40 I did not need the last 3 pinion.

Yes I install himself and no difficulties and yes is the shimano di2 battery.



I have changed Dura-Ace crank with bottom bracket, rear derailleur ultegra RD 6700 and Dura-Ace cassette cs7900 10fach with chain. The price with Di2 ca 800€
Can you take. Pic of the crank and bottom bracket you changed out?
 

Tonqin

Member
Yes more pictures please, very interested in your gearing - what chainring size are you using?
Is that an adjustable stem? More details please.
You're the first I know of with electronic shifting, will someone on here do wireless shifting yet?
Very nice bike...
 

Tonqin

Member
Very impressive and equally impressed you can use a 52t front as well. Do you get to use the 52 x 11 or 12 much?
 

Ciyrus 5000

New Member
My cassette is 11x28 this is my set up you need perhaps another set up. The Chainring can you take in 50,52,53,54 and cassette in 11/27,11/28,11/32,11/36.

That you can try everything , do not know how fit you are
 

Douglas Ruby

Well-Known Member
Ciyrus 5000,

With the 11-28T RD 6700 cassette (11-12-13-14-15-17-19-21-24-28), your 52T chainring, and the stock 700x45c tires, your gearing ranges from 52" (4.1 M-dev) to 132" (10.6 M-dev). At a cadence of 80 rpm, your speed ranges from 12.4 mph (19.9 km/h) to 31.5 mph (50.7 km/h). At 100 rpm, your speed ranges from 15.5 mph (24.9 km/h) to 39.4 mph (63.4 km/h). You can cruise at a comfortable cadence of 70-80 rpm in 9th or 10th gear at the 45 km/h limit of the e-assist.

Based on your gearing, I am guessing you ride a cadence of 70-90 or so. You must be a pretty strong rider to climb in your 52 x 28 low gear.

I ride a faster cadence, am 65 yrs old, ride the base Turbo instead of a Turbo S, and weigh 105 kg. This gearing would be too "tall" for me. I use an 11-36T SRAM 10 speed rear cassette, a 44T chainring, and typically ride a cadence of 80-100 rpm. I am now looking at the Shimano XT M8000 system (non DI) with an 11-40T or 11-42T M8000 11 speed rear for a lower first gear. Of course, I have less assist so having the lower gear is a real help. The cost for derailleur, shifter, and cassette would be around $200 USD.

Doug
 

Ciyrus 5000

New Member
When I will cadence to buy a Hometrainer or a racer. I need to work 28 minutes for 20km and this is important. I want to go fast and use the full speed from turbo s.

I'm 57 yrs and 86 kg

Best regards Michel
 

Ciyrus 5000

New Member
Only the ultegra 6700 is for 10-fach and all the others 11-Fach.
With 11-fach is only 11x40 cassette.

I have seen that also stromer st2s and wanted to have so.
 

Douglas Ruby

Well-Known Member
That is German for
I still don't understand. What is 10- fach/11-fach? Advantages/disadvantages?
10 speed or 11 speed. The OP was looking for high speed close ratio gearing like an unpowered road bike. He chose 10 speed Ultegra instead of 11 speed XTR. The 11 speed 11-40 gives a wider ratio than stock, but not closer. Since you have the 11 speed XT on your Turbo S, there is little to be gained by switching to DI2.