Anyone have an opinion on Kore's I-Beam seat post / saddle combination?
I'm looking to have some weight-saving options for my Dahon Mu Uno for when I travel by train and will be putting the bike in overhead luggage racks, yet riding for short enough distances that I'm willing to forgo the seat-post pump that came with my Mu Uno.
Two things give me pause:
1) Would this really save much weight?
The Biologic Postpump I have now is listed at 755 [g] on Thor's site, whereas the Kore I-Beam seat post is listed at 394 [g]. I can't find a weight for my saddle, but I figure even in the worst-case scenario an I-Beam compatible saddle wouldn't weigh any more. Accordingly, it seems like a lower bound on the weight savings should be 361 [g] (~0.8 lbs). Perhaps a light I-Beam saddle could bring this up to a total of close to a pound? Hmm... that best-case scenario might not be quite enough to justify the ~$100 expense...
2) Would an I-Beam setup lower the maximum height at which I can position my saddle?
I set my current saddle to right at the limit. Thor's site says the I-Beam post is 24" long with a 6" minimum insertion height. The Postpump is listed at only 23" long, but it doesn't specify a minimum insertion height. For comparison, however, I see that a standard Tern seat post is also only 23" long, but that it has a minimum insertion of only 4". If those numbers are the same for the Postpump, then I'd actually be an inch lower at maximum extension.
Hmm... It seems that in thinking this through to write this post I've just about talked myself out of it. That said, I'll keep an open mind in case anyone has any strong opinions in favor.