rr54

middle of the downtube that is.

You should try pushing a cable through the internal cable housing from the back. You can see the cable housing between the two triangles. It is essentially a plastic straw. The straw also doesn't extend past the middle of the seattube so you cannot feed a cable from the top. No idea where it starts in the chainstay, but you cannot get past the first bend in the chainstay for the derailleur cable at least (I tried). A mention of the difficulties of running cables through the headset for anyone wanting to maintain their bike would be good to see. IMO, the cheap cable internal cable routing and the headset cabling are very irritating design flaws. A good example of fixing something that wasn't broke.