I want to get myself a dropper seatpost but I have an aluminum frame that doesn’t support internal cable routing and I don’t really want to drill a hole in my bike. Has anyone tried to fit the cable through the water bottle cage screw holes in the seat tube? Is it at least possible?
PS: any recommendations for a good affordable dropper post with internal cable routing?
Go with the external routed cable. The angle with which the cable coming through the bottle cage bolt hole would be at 90° to the frame and the diameter to small for the cable any way probably which will cause other routing issues. You would need to hack the bottle cage hole which I expect you do not want to do.
My guess is the water bottle mount hole is too high anyway. Go with an external, just make sure to get one with a fixed cable position, rather than one where the actuator cable attaches at the top where the seat mounts.
I didn’t measure diameter of the hole and cable housing but most likely it’s too small, so you’d have to drill – make it bigger. Provided that hole is low enough to connect to dropper post. After that you’d have to deal with almost 90 degree angle for your cable. And final bit – you need another hole near head tube for your cable to go inside that frame.
Just as others said, get an external – there’s nothing wrong with one more cable outside your frame.