Cannot get my Kore seat post to clamp tight

othello

I have a Kore Elite carbon seatpost on my Cinelli and it is causing me no end of grief.

It just won't hold the saddle rails tight. Over the course of a couple of hours ride the saddle will gradually slide back on the clamp, and then come loose as the clamp gets to the narrow part of the saddle rails. Every ride I have to stop and tighten the saddle rail clamps.

Anyone got any tips or ideas? I'm using a Sella Italia saddle. I've tried tape on the rails. I've cranked the seat clap bolts up super tight. I am a big guy -- 6ft 1" and 15 stone, and I like to ride in the saddle, so I expect I'm putting a fair bit of force through it. But my old Cinelli lump of alu seat post with a 'standard' clamp never did this.

gds08

It's probably because the Kore Elite seatpost is designed specifically for 'I-Beam' saddles which have a single solid central beam ('I' shaped) rather than the conventional twin rail arrangement. The Kore Elite will not work on any other type of saddle as it has nothing to clamp the individual rails against and hence why it will hold it in place but after a short time with even a light rider on it, it will move. Unfortunately you will need to replace it with a seatpost designed for conventional type saddles. Sorry to be the 'bringer of bad news' but this should have been explained to you by whoever sold it to you in the first place.
If you have a look at an 'I' beam saddle you will see how it works in that the two sides of the Kore seatpost press against the central rail.
Graham

othello

gds08 wrote:

It's probably because the Kore Elite seatpost is designed specifically for 'I-Beam' saddles which have a single solid central beam ('I' shaped) rather than the conventional twin rail arrangement. The Kore Elite will not work on any other type of saddle as it has nothing to clamp the individual rails against and hence why it will hold it in place but after a short time with even a light rider on it, it will move. Unfortunately you will need to replace it with a seatpost designed for conventional type saddles. Sorry to be the 'bringer of bad news' but this should have been explained to you by whoever sold it to you in the first place.
If you have a look at an 'I' beam saddle you will see how it works in that the two sides of the Kore seatpost press against the central rail.
Graham

Thanks for the message Graham.

When I bought the seat post, it came with 2 saddle clamps. The i-beam one you mentioned, and a standard rail one. See http://www.kore-usa.com/products/seaposts/rail-adaptor

gds08

I know this is probably going to sound like a daft thing to ask and please forgive me for asking but are you using the black bit in the middle of the adaptor that fits between the two saddle rails and gives them something to clamp tightly against. If not then you need to!!

othello

gds08 wrote:

I know this is probably going to sound like a daft thing to ask and please forgive me for asking but are you using the black bit in the middle of the adaptor that fits between the two saddle rails and gives them something to clamp tightly against. If not then you need to!!