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For 2, it can be either, I found the downtube easier though as it is a larger diameter tube.
Some points from my setup
- As the bb is just a BSA threaded there isn't a lot of room around the axle shell for cables, so try to keep things tidy.
- Fair of forceps can be very useful with getting the internal routing working
- Kind of have to force di2 cable through port on chainstay. This required some force due to the size of the hole and the small tube diameter here to get it around the bend. Then you push cable through and fish for it through the BB shell.
- Due to location on chainstay on BB shell the hole for the routing is within the threads for the BB cup. Try to use a shallow bb cup without too many threads. For example, I couldn't use the Chris King BB I had as it'd shear the di2 cable, so went with a shimano one instead.
- As the bb is just a BSA threaded there isn't a lot of room around the axle shell for cables, so try to keep things tidy.
motoko-
Very useful thanks
Yeah I've also specced a BSA Threaded BB was just going to be using a standard Shimano Ultegra BB with it.
Sounds like the whole thing is going to be a bit of a faff, shame second hand Di2 was so much cheaper than second hand Etap.
Might be a stupid question but how do you keep the cables tidy inside the frame? Tape them to parts of it?
Saffronspokes
Ok cheers Matt, yeah had to order last night unfortunately.
Might have gone a bit short on Box A to B and Battery to B. Should be able to return them easily though. All other lengths should be good.
Another few questions whilst you're here...
1 - What is the max tyre size the 51cm can run on 26" wheels with guards?
2 - On the Isen frames does junction B lodge in the downtube or seat tube?
Ta