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Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

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Old 09-07-08, 03:37 PM   #1
FlashBazbo
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Best zero-setback aluminum seatpost?

I would like to shorten the cockpit of my 'cross bike. Best way? I'm thinking a seatpost with zero setback.

Recommendations for an aluminum zero-setback seatpost? (27.2mm) Also, although my stock seatpost is 350mm long, that seems like a waste of at least 100mm of material. With a properly-fitting frame, couldn't I go with a 250mm post?
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Old 09-07-08, 06:15 PM   #2
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I recently bought a cheap zero-setback seatpost from FSA. The clamp is more fiddly than I'd like, but it basically works. Can't remember the model... maybe the FR-270? I lopped about 100mm off of it with a hack saw, chamfered the ends with a file, and then sanded it smooth. No problems so far.
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Old 09-07-08, 06:42 PM   #3
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Thomson. End of thread.
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Old 09-07-08, 08:26 PM   #4
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Thomson. End of thread.
I'm a little shocked it took TWO, countem' TWO, responders before I got this answer!

Thomson: Official seatpost of the Bike Forums system.

Because I read so much about Thomson here, I'm actually a little tempted to try one out.
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Old 09-07-08, 08:30 PM   #5
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I'm a little shocked it took TWO, countem' TWO, responders before I got this answer!

Thomson: Official seatpost of the Bike Forums system.

Because I read so much about Thomson here, I'm actually a little tempted to try one out.
It's not the official seatpost, but they are made very well and perform flawlessly. There really is no reason to use anything else in a non setback post. Elite or masterpiece, I have both, both work.
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Old 09-08-08, 08:22 AM   #6
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thomsons are great, but i wouldn't go messing with saddle fore-aft as a means of shortening your reach.

having the saddle too far forward can cause bigger problems, i'd go with a shorter stem.
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Old 09-08-08, 08:32 AM   #7
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What's the setback on the Thomson?
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Old 09-08-08, 11:46 AM   #8
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I'll 2nd the thomson seatpost advice (I have two also in 0 setback). One caveat is their clamp can be somewhat a PIA. As you tighten down each allen fore/aft it also adjusts the seat andle so it takes some familiarity. also on the 0 setback, the allens end up very close to the seatpost and it gets pretty jammed up to make adjustments. It works but lets just say its not fast compared to a single bolt allen adjustment.
As a long armed, long torso guy I found the zero sb post to be a good fix
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Old 09-08-08, 12:18 PM   #9
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I recently bought an inexpensive truvativ micro-adjust seatpost from jenson and it's really nice, really light, got good reviews, and cost half as much as a thompson.
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Old 09-08-08, 01:15 PM   #10
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I'm a little shocked it took TWO, countem' TWO, responders before I got this answer!

Thomson: Official seatpost of the Bike Forums system.
If you are asking for the best zero-setback aluminum seatpost, don't get all snarky when someone gives you the correct answer.
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Old 09-08-08, 02:44 PM   #11
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Snarky = "irritability"

There was no snarky there. Just an observation. Any Bike Forum regular (including Thomson fans) could have made the same observation.
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Old 09-08-08, 04:33 PM   #12
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I'll 2nd the thomson seatpost advice (I have two also in 0 setback). One caveat is their clamp can be somewhat a PIA. As you tighten down each allen fore/aft it also adjusts the seat andle so it takes some familiarity. also on the 0 setback, the allens end up very close to the seatpost and it gets pretty jammed up to make adjustments. It works but lets just say its not fast compared to a single bolt allen adjustment.
Sounds just like my FSA, albeit for twice the price...
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Old 09-08-08, 09:39 PM   #13
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Thomson. End of thread.
Yea what he said . . . and that goes for a stem too
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Old 09-08-08, 11:53 PM   #14
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Sounds just like my FSA, albeit for twice the price...
Except the thomson isn't just a tube - The cross section of the extrusion for the post makes it stronger in the fore/aft axis, while still keeping it light.

Thomson for the the win.
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Old 09-09-08, 01:33 AM   #15
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Except the thomson isn't just a tube - The cross section of the extrusion for the post makes it stronger in the fore/aft axis, while still keeping it light.
Doubt that it actually matters. But if you believe it, then by all means spend 2X for the Thomson...
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Old 09-09-08, 05:12 AM   #16
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Let's talk about what's important . . .

1. Stability. A broken or flexy seatpost is among the worst situations a cyclist can experience. I admire the technology that Thomson puts into their tubing but I wonder if it is necessary.
2. Adjustability. If it won't adjust to where you need it, it's worthless.
3. It stays where it's put. On another bike, I've got an all-carbon seatpost with an all-carbon seat clamp that likes to migrate. Not good. You should be able to forget about your seatpost once it's set.
4. Light weight. Because we're cyclists.

I'll repeat it, but it's the bottom line: A great seatpost is one that you completely forget about. It never draws attention to itself for any reason.
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Old 09-09-08, 03:55 PM   #17
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Let's talk about what's important . . .

1. Stability. A broken or flexy seatpost is among the worst situations a cyclist can experience. I admire the technology that Thomson puts into their tubing but I wonder if it is necessary.
2. Adjustability. If it won't adjust to where you need it, it's worthless.
3. It stays where it's put. On another bike, I've got an all-carbon seatpost with an all-carbon seat clamp that likes to migrate. Not good. You should be able to forget about your seatpost once it's set.
4. Light weight. Because we're cyclists.

I'll repeat it, but it's the bottom line: A great seatpost is one that you completely forget about. It never draws attention to itself for any reason.
+1... And yes, I have a Thomsen - and several others.

I'm sure you can buy a similar seatpost for less (and go ahead and feel smug if you do), but why take chances when an excellent result is guaranteed?
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Old 09-09-08, 04:00 PM   #18
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+1... And yes, I have a Thomsen - and several others.

I'm sure you can buy a similar seatpost for less (and go ahead and feel smug if you do), but why take chances when an excellent result is guaranteed?
I agree. With a seatpost, more than just about any other part of a bicycle, "overbuilt" is good.
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Old 09-09-08, 04:26 PM   #19
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I'm sure you can buy a similar seatpost for less (and go ahead and feel smug if you do), but why take chances when an excellent result is guaranteed?
What makes you think you won't get excellent results with any seatpost you buy? It's not like there's much to them...
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Old 09-09-08, 06:06 PM   #20
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What makes you think you won't get excellent results with any seatpost you buy? It's not like there's much to them...
All seatposts are definitely NOT created equal. I have had a couple of bad ones. (1) The aforementioned carbon post (expensive), and (2) an aluminum post that buckled at the top of the tube and separated from the clamp (mid-priced).
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Old 09-09-08, 06:28 PM   #21
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What makes you think you won't get excellent results with any seatpost you buy? It's not like there's much to them...
You know, it seems like that oughta be the case... But...

When they fail it's either real exciting OR real inconvenient. Plus, seatposts can also do other annoying things like generate weird noises, be difficult to adjust, lack sufficient adjustment - or simply refuse to stay in adjustment. And of course, some are built to become paperweights in their next life.

I agree, a good seatpost SHOULD cost about twenty bucks. Many of us have spent about that much with widely varying results. Nobody salivates over dropping the kind of money that Thomsen charges. We do it because sometimes certainty is a very good thing.
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Old 09-11-08, 07:25 AM   #22
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Final decision: I'm keeping my stock FSA carbon-wrapped aluminum seatpost. I hate carbon-wrapped aluminum. It makes no sense to me. But this seatpost and clamp work.

I switched saddles and the new saddle, at its farthest back position, sits forward of where the old saddle sat. Hence, no need for zero-setback.
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Old 09-11-08, 08:49 AM   #23
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i have a thomson on my track bike and am buying one for my cross bike, so def thomson.
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Old 09-11-08, 09:21 AM   #24
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I have a Thomson Masterpiece on my cx bike. It's aesthetically pleasing...appears well made...seems sturdy...and is very light. It works. Good seatpost.
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Old 09-13-08, 11:56 AM   #25
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If you're racing cross, you'll want your butt further over the rear wheel than on the road. You'll need that traction.
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