What's NOT said about Suntour NCX seatpost

[Gionnirocket]

In the process of setting up a new bike with new NCX seat post, and just wanted to share that after flipping that top bracket 180 degrees, I found myself too far forward without enough real estate ahead of me. Post functioned perfectly.

Point being, flipping that top bracket is not going to work out for everyone - though I can certainly see the logic behind the idea!! Noteworthy is the fact there are not many guys my size riding bikes (6'1"/315)

I concur... I have no need to flip the top bracket and if I did I'd be too crammed towards the handlebars.
I do think that having the option is coolio and glad someone used a little common sense/problem solving and posted it.

 

[bill_1960]

I concur... I have no need to flip the top bracket and if I did I'd be too crammed towards the handlebars.
I do think that having the option is coolio and glad someone used a little common sense/problem solving and posted it.

So far I prefer mine with the NCX seat mount reversed, more fwd position. I'm 182cm 70 kg, Cannondale Trail 7, casual urban riding with a few dirt roads.
I'll review it further when I've tested it more.

 

[AHicks]

So far I prefer mine with the NCX seat mount reversed, more fwd position. I'm 182cm 70 kg, Cannondale Trail 7, casual urban riding with a few dirt roads.
I'll review it further when I've tested it more.

I like the change in geometry. Makes a lot of sense. That's why I changed it before even riding the bike!

 

[mlandau]

The seat binder bolts, I stripped one of them, so I can't loosen it to get the seat off. Does anyone have a suggestion for loosening the bolt? Yes, I always tightened the bolts to 15nm.

 

[bill_1960]

After a few 100km's with the Brooks B17 and NCX seatpost I've changed the seat mount position back to standard from reversed. This positions the mount further rearwards, and I run the Brooks B17 seat set forward in the mount.

As mentioned by others, the Brooks B17 seat rails will rub against the front linkage of the NCX seatpost unless the seat fwd/aft is positioned most of the way fwd, or you reverse the seat mount (explained earlier in the topic).

There's around 45 teeth on the NSX to adjust the seat tilt angle. Thats around 8 degrees per tooth. I found it put the Brooks B17 seat tilt angle either down too much, or up too much for my liking.
My remedy was to insert thin washes between where the teeth mesh, adjust seat tilt to my preferred angle (roughly level in my case), drill 2 holes each side with a 2.9mm drill bit, and tap in 3mm dia stainless steel dowel pins.

So far so good. A few things to note:
I determined the right tilt angle for me by test riding with a 2 bolt micro adjust seatpost.
When the Brooks B17 is new, nearly any position wont feel comfortable. Let it wear in before you think about modding the NSX seatpost, imo.
You can do the same mod with the NSX seat mount reversed, but the drilled holes wont line up if you change back to the standard position.

 

[Ron25]

Absolutely not. What I did is remove the 4 set screws which hold the roller pins in place and pushed out the pins; reassembled the lower part as per how it came (had to remove this lower roller pins to get to the upper set screws); then flipped the top part + seat mount around so the seat mount is almost inline with the post. It works the same as it came when new, it's just the seat mount is about 1.5" more forward, and higher, which allowed me to drop the post further down into the tube.

Hopefully this picture helps show how the seat mount is more forward and higher than the original position:
View attachment 122763
The stock location from Suntour has the seat mount back much further and lower.

After reading Avg Joe’s method here I pulled mine apart and reversed the top link. Took all of maybe 20 minutes and now mine also looks like his pic. I haven’t tried it out yet (hoping for in the morning) but it looks like a “no duh” solution to the problem.
Many thanks, Avg Joe!