The Brooks B17 saddle on my touring bicycle doesn't allow for much forward/backward adjustment. Thinking I might like to try a setback seatpost to make my bike a bit more comfortable.

Anyone know what this is? Looks very adjustable.

https://re-cycle.com/ImageFetch.ashx?...2&ImageID=3045

Sorry, can't help you. It does look very adjustable, but also very heavy. If it were me I'd prefer to try a seatpost with about the amount of setback I thought was right, and slide my saddle fore and aft from there. But that's just me.

Try here https://www.velo-orange.com/vogrcrusepol.html Nitto also makes a good long setback post.

That is the SR MTE-100. There's one on ebay right now. I don't know what size post you need, but you might need a shim. I have only seen these in 26.8 or maybe 27.0.

The Nitto Wayback seatpost mentioned above is extravagantly expensive. I agree with Bigbluetoe.

Hmm, I didn't realize my options would be so limited by seatpost size. From what I can find through google on setback seatposts, the only option that is remotely affordable is the VO Grand Cru, and that appears to be 27.2 only. Anyone know what size a A-86 SR Laprade seatpost from a 1986 Schwinn Passage is? If it is a 26.8 this ebay auction might be my best bet.

Appreciate the help.

Well, damned if this page is correct the seatpost is probably 26.6

https://velospace.org/node/15970

Sanding off .1mm from a seatpost probably wouldn't weaken it much though I suppose.

Take a look at your seatpost, they are usually marked with what size they are. If not, your LBS should have a tool that will easily measure the seatpost size. It's just a stepped rod that goes into the seat tube and where it stops is your size.

There is another seatpost that might work for you. It has a big bend in it for a lot of setback. Unfortunately, I can't remember who makes it. I just looked through QBP and I couldn't find it.

Dunno about the seatpost in your photo, but if you need a post with more setback, check out the CLB posts sold at www.wallbike.com

Brooks saddles are notorious for not having long enough rails for many modern frames with steep angles. The CLB post provides more setback than just about any other. I was able to use a B-17 saddle on my De Bernardi frame with a 74-degree seat tube angle with a CLB post.

A Sakae Ringyo MTE-100 Layback seatpost. Thing weighs in at a very hefty 435g for a rather short (around 180mm if I recall correctly) mountain bike post. I had one on my first mountain bike. Horrible thing. Didn't really work that well and, on a bike with a 69 degree head angle, made the bike a wheelie machine when climbing.

You might look for an old Titec Hellbent seatpost. They have a bend in the post that sets them back a long ways. They can be detrimental to your frame, however. A lot of setback puts stress on the seatpost collar and the seattube. I broke a frame that way.

I ended up going with an MTE-100 that I just found at a local shop. According to that link, with a bolt in place of the QR it's 380g, which is actually only 3 grams more than the stock seatpost from this bike. Plus at $25 used it's much more affordable for me. Just gotta do some sanding on a shim to fit it though.

Appreciate all the info you guys have provided.

I just had to add that the bike in the photo is astonishingly retro. Stem mounted shifters and cheater bars for the brakes. Must be early 70s!

Can't be: has alien technology - a stealth cyclocomputer. Visible magnet, invisible sensor and display.