's Forum Archives - Components

Archive Home >> Components(1 2 3 4 5 6 7 8 9 10 )

Upgrading Seat Post on the Raleigh Pro(3 posts)

Upgrading Seat Post on the Raleigh ProJK_Northend
Sep 24, 2002 5:23 AM
The bike shop I purchased the bike from upgraded the stock seat post to a Ritchey Pro Road Seat Post. I could not tighten the seat post bolt tight enough to keep the post from slipping (very annoying, stripped one bolt). Right now I am using the stock seat post and it seams to be holding fine. Both posts are 27.2. Has anyone had similar problems with the Ritchey Post? Has anyone else upgraded their post on the Raleigh Pro? If so with what and how were the results? Has any one had to rough up the surface of a post or use a fine abrasive powder to secure the seat post. Any help would be greatly appreciated.

re: If it ain't broke...Mike Prince
Sep 24, 2002 5:37 AM
I wouldn't fix it. You say that the stock seatpost is holding fine. Changing posts may save some weight, but you will not notice a significant difference in feel. If you are really set on upgrading, my recommendation would be to go with a two-bolt post (Thomson, others). The clamp design allows for infinite microadjusting of the saddle angle and does not slip at all.

I can speak for the Thomson as I use it on all my bikes. A true set and forget component for me. Not the lightest or prettiest out there, but rock-solid and reasonably light.

After re-reading your post as I type this, it's not clear if the slipping you describe is the saddle/post or the frame/post. If it's the saddle/post, then my above answer applies. If it's the frame/post, then either the seat tube is on the high side tolerance-wise or the Ritchey post is on the low side. If the stock post fits, then the logical answer is the Ritchey post is a bit "skinny". If you have access to a good set of calipers this problem is quite easy to solve. Measure the OD of both posts as well as the ID of the seat tube and you'll know for sure before you drop $50+ on a new seat post that may or may not fit well. If the seat tube is oversize, you may need to fabricate a shim to tighten things up with a non-stock post.

Hope this is helpful.
re: If it ain't broke...JK_Northend
Sep 24, 2002 5:55 AM
Thanks for the quick response. It is the Frame/Post connection that is the problem. Good idea about getting an accurate measurement on the posts. I'll try to find a set. I don't think there is enough space for a shim unless they make some really thin ones. Did you have a shim in mind?