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Theres a good story about the hambini BB, where he had to get past internal BB routing... great video with a lot of engineering know how... https://www.youtube.com/watch?v=1XXrVoF2TwY
@Jaap thanks for the explanation, interesting. Yep I did mean aluminium. -
A few reasons for not going full internal:
First of all I'm running just an inner cable inside the downtube. The small tubes brazed into it have an outer cable stop at the end. And I really couldn't figure out how to run just an inner cable along the BB.
Also the Chris King BB cups cover the spot where the chain stays are welded to the BB shell. So there is no way to continue the cable through the BB shell into the chainstay.
On my road bike I had my di2 wires run through the PF30 BB shell and the room inside the shell was so little that it was really difficult to get the thin di2 wires past the BB sleeve, so really didn't think a 30mm spindle would leave enough room for an inner and outer cable inside regular PF30 shells.
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BernardRenault
Jaap
@carson
what was your thinking for bypassing the BB shell with the internal cable routing?
interested as i recently had a real fight with hydro cable routed through a BB shell with an oversize crank spindle - had to adapt a different BB sleeve to fit and got there eventually but it was a pita.