Originally Posted by
MikeOK
So you're saying I can put a 36 tooth on my Ultegra 6870 Di2? I'm a clydedale and could use a little more low gear.
The thread was about shift points and I'm sorry to have taken it off topic.
A few questions were asked and so I'll say that it is a Niner RLT 9 RDO using a SRAM PG-1170 11-36 cassette with Ultegra 6870 Di2 group. Rear derailleur is a GS mid-cage and chainrings are 50-34. E-Tube was set to use an 11-32 cassette. The B screw had to be turned in quite a bit. I use every gear and crosschain it all the time. I beat the crud out of the bike on gravel and mixed surface rides and it shifts flawlessly. Whether it will work on any other bike is unknown to me.
If anyone wants to read more they can look at
http://www.bikeforums.net/recreation...rdo-build.html.
I brought it up because I wondered if moving from a 6870 rear derailleur to an R8050 would change the shift points as mentioned in the first post.
-Tim-