Originally Posted by
unterhausen
I don't doubt someone at one time made what he needs, but we don't know what unusual size post the bike takes. For example, 27.4 was a lot more available in the past. If I had to bet, that's what he needs. When I needed a 27.4 post, I was lucky the owner of my lbs had been hoarding a nice 27.4 DuraAce post. Shimming a 27.4 seat tube to something that you can get a set forward post in may not be so easy. You might just shim down to a size with no available posts.
I guess you could probably get someone to make a Ti post. But the shocking price might make a new frame look more reasonable.
Ti Cycles can make a post of any setback you want using that excellent Thomson clamp. A few hundred dollars. Their posts are joys to own. I've got two because I had my two Ti Cycles frames built with steep seat tubes to get rear tire clearance with short chainstays and fenders. (I pull my weight forward when the going gets interesting. Bikes with long chainstays get bouncy and skiddy in back on mountain downhill corners where the ride is as interesting as it gets. My short chainstay bikes I absolutely love! Needing 60mm setback posts? $$$ yes. And the ride? Yes! Now if I were doing it again, I'd have the builder bend the seattube. Duh!)