Some Kona Process frames had a version of this actually. I was working on a Process 134 the other day, from maybe 2016, and there are housing stops where the cable sections enter and exit the internally routed downtube. The cable is in a tube (not hard to feed) but it's significantly larger than housing so there's no, or at least limited, friction.
Any brand could do the same with their tube-in-tube or channel setup. Just have a housing stop and the entry and exit of the frame and make the channel the cable runs through straight and large enough that the cable is running free.
Neat idea.
Oct. 9, 2022, 8:44 p.m. - Andrew Major
Some Kona Process frames had a version of this actually. I was working on a Process 134 the other day, from maybe 2016, and there are housing stops where the cable sections enter and exit the internally routed downtube. The cable is in a tube (not hard to feed) but it's significantly larger than housing so there's no, or at least limited, friction. Any brand could do the same with their tube-in-tube or channel setup. Just have a housing stop and the entry and exit of the frame and make the channel the cable runs through straight and large enough that the cable is running free. Neat idea.