Is it ok to get a seatpost with zero setback?
 

I've been riding for a few years on a Craigslist Cannondale but got a new bike recently and was interested in light upgrades. I was interested in a KCNC Ti or other brand carbon seatpost to save a few grams (hopefully 100 or so). This is how I'm set up currently with the stock FSA post with 20mm setback. I think I've only seen KCNC posts with zero setback. Would that be OK or do I need the setback in my case? Also, cost etc being equal, is there a reason to go either Ti or carbon (ie vibration dampening, etc)?

Thanks

You probably couldn't put the saddle that far back with a zero setback post. Maybe...it's hard to tell from the picture. Zero setback posts are good for people (like me) who for some reason always jam the saddle as far forward as possible, regardless of the bike.

Where else are you saving weight? Wheels are the obvious but expensive place to start. Tires can be a big one depending on what you're running. But I think saving 100g on a post makes sense. If you can do that 4.5 other places (bars, stem, etc.) you've lost 1 pound.

Based on your picture, you have your saddle far enough forward to use a zero setback post while keeping the saddle-to-bars distance the same. As to seatpost material, I'm no fan of carbon even though it's the big thing these days. Too many reports of slipping and the possibility of crushing it if you get too ham handed with the clamp bolt. Ti is strong but not all that light and very expensive.

Consider the Thomson Masterpiece aluminum seatpost. These are very strong but very light with the 240 mm/27.2 diameter road seat post at less than 160 grams.

Do you have short femurs? is this an appropriate set back for that saddle position.

USE in UK offers zero setback posts in carbon,

or in a rider's weight adjustable spring and elastomer suspension post.
if the damping is more important than a few more grams..

Thanks for the replies. I'm not trying to go full weight weenie, but it a few pounds lighter than my Cannondale and I really like the acceleration and responsiveness so I'd like to drop another pound or so. For wheels I'll eventually go with something like Soul2.0. I really love the FSA wing compact bars and am liking the Fizik saddle so those are keepers (proving I'm not a true weight weenie)

The bike is a 61 cm and I really like the fit. If the need for a setback is in question, I'll probably just try to find one that has some setback. Kinda had my heart set on a KCNC, but there are a lot of nice seatposts with some setback that'll ensure I don't need to compromise my setup/comfort.

yea , that knee over the pedal spindle, at 9:00. adjustment
is where you adapt via the setback.

Cuing on Not Carbon, but .. offers some shock absorption, + setback ..
Cane Creek ST(short travel ) , thudbuster.
suspension: an elastomer block inside a parallelogram.

happen to like the LT version, I got on my BF (different kind of bike)

Looking at the saddle tilted forward, I think it may make sense to have someone who understands correct positioning before buying a new seatpost. All these comments about setback position and femur length are silly without knowing the seat tube angle. Every degree change of seat tube angle shifts the saddle position by about 1cm (for the same rider position), your seatpost needs to have enough range to fit you to the bike.