Originally Posted by
Willbird
I guess looking at it....the RD will absorb so many teeth difference, if you remove the FD you can use a wider range cassette.
The problem isn't the take up - yes without 2 different front rings a short cage can handle just about every cassette out there. The formula to calculate take-up still works just 0 for the front and largest sprocket - smallest sprocket for rear. So a 11-36 cassette need a RD capable of 25 teeth capacity. The bigger issue is the max size sprocket it can physically handle. For example my DA7800 is only rated for 27t... without the extended hanger it would just crash into the cassette far before reaching the 36t sprocket. Some say the extended hanger will make the shifting poorer or some such problems, so I guess I'll find out soon enough.
Originally Posted by
Dean V
You could of used a Sram mtb derailleur then you wouldn't need the shift mate or hanger extension.
There are many different options here. I already had the DA7800 parts and wanted to use them, plus I got em cheap on ebay. While they are different than the campy shifter, I still wanted to keep some uniformity of the rear components, and polished silver. However my tri build I am thinking of doing something similar, but want black components (bike is white and red with some black trim) those Sram RD might fit. I never looked at Sram before... so you are saying something like the X0 10 speed would work with Camp Ergo? I was planning on DA bar ends but I'm not sure if I really like the aero bars or not. If I decide to use a regular drop bar I may consider this.