The integrated seat post on my 2014 NS Capital frame is something that I’ve struggled to get on with, It’s just too low and therefore I decided to cut it off mine so that I could put in a normal seat post and adjust the height. This short guide will show you the steps that I took to complete the modification. The process is pretty simple, however, It’s vital to use the correct safety equipment at all times and also use tools that are fit for the job. If you are unsure, then either get somebody else who you trust to do it, or just don’t do it. I’m unsure if this affects warranty of the frame and therefore assume that it would void any that exists on the frame. However, I could be wrong. Notes: I measured the inside diameter of the frame’s seattube to be 27.2mm~
I measured the outside diameter of the frame’s seattube to be 30.2mm~
Bike parts required after mod: 27.2mm seatpost 30mm-30.8mm seatclamp (I went with 30.8mm which is just too loose, 30mm would be better). I advise you double check for yourself by measuring with a set of vernier callipers. Required tools: Hacksaw, power drill with 6mm drill bit, file, grinder with cutting disc. Before starting, you should have already removed your seat and rear wheel at least. A bike stand or somewhere to hold the bike still also helps to cut straight lines in the frame and ensure the best outcome. Step one: Mark out a straight line on the frame where you intend to cut the integrated seat post off. This line should leave about 15mm of the seat tube for a seat clamp to go onto afterwards.
Step two: Chop the integrated seat post off carefully once you’re happy that your line is straight.
If you’re using a wedge post, there is no need to continue from this point. The job is complete. Step three: Drill a hole on the back of the seat tube and about 20mm from the top of where you have cut. This is for when using a seat clamp.
Step four: Get a pen and mark out a central, vertical line down the back of the seat tube that will run down the hole that you drilled in the previous step. Get your grinder with cutting disc and cut a slot vertically from the top of the seat tube, down to the hole that you drilled in the previous step.
Step five: Get your file and get rid of any sharp burrs. I found that there was also some on the inside of the frame from the manufacturing process.