Suntour SP12 NCX suspension seatpost bargain!

[Fordulike]

So that's the part where you sit on the seat and see how far it drops, I believe 33% is fine?

Yeah, a third is what you're aiming for.

 

[richtea99]

Correct. The safety advice is to avoid bottoming out (or topping out):
Extract from user manual:

WARNING !
Proper preload adjustment is critical for the safe functioning of the SUSPENSION
seatpost. Repeated bottoming- or topping-out under use can lead to a structural
failure of the suspension seatpost, resulting in accidents and/or injuries.

With somebody’s support, sit on the bike with your hands and feet positioned normally. Have
the supporter looking and confirm that the seatpost is approximately 1/3 compressed.
2. If the compression is not within the range as explained above, remove the seatpost from the
bicycle frame.
3. To increase the preload, with a 6 mm Allen key, turn the adjuster clockwise. To decrease the
preload, turn the adjuster counter-clockwise, taking care to leave a minimum 10mm of
exposed threads visible at the bottom of the seatpost.

 

[KeithMac]

I've had an NCX SP12 on my GTECH for 6 years, it's had the stainless pin and bush rebuild around 2 years ago.

Bought another recently for my Carrera TSDZ2 conversion.

At 77kg I set standard spring pre-load bang on middle and it's been fine.

I didn't know you could buy covers, bought two!. Road grit does stick to the greasy bits!. Will strip and clean and grease my 6 year old one before fitting cover.

Can't speak highly enough about these seatposts, excellent bit of kit!.