Setback seatpost ??

[Tom Norton]

I currently have a Thompson Elite seatpost and would like to switch to a setback. I see Velo Orange has one but have heard a few concerns about bolt breakage. As this is for my touring bike I really want to go with a quality product. May just a new Thompson.

[Alex I]

Color preference? For silver, I've see good things about the Nitto S83 and Rivendell says it's good for heavier duty applications (https://www.rivbike.com/collections/seat-posts/products/nitto-s83-seat-post-26-8-or-27-2). I ended up going with a Nitto S65 (https://www.rivbike.com/collections/seat-posts/products/nitto-s65-crystal-fellow-seat-post-27-2-x-250-11031), no complaints myself, but they do mention it being potentially a little lighter duty. 

[Alex I]

Jumped the gun with an incomplete response. I've also got a (silver) Ritchey Classic https://us.ritcheylogic.com/us_en/bike/seatposts/classic-2-bolt-seatpost - again, no complaints, like the look if the polish and graphics complement what you've got going. It's on a bike with a 73.5° STA, hence the little more setback at 25mm (not as much as the VO Long at 30mm).

Alex, typing before thinking in CO

[nm matt]

tom, how much setback do you need? the thompson may not get you there. i have used the VO post on a number of different builds and have been happy. i haven't heard about bolt failure, and certainly haven't experienced any. i have also used the long setback nitto post. its a beaut, but super heavy as it is steel, and not Al.

[Sadiq Gill]

I have a NIB VO long set back post in black that i am selling. $40 shipped.

I have and use several. The failures were in the original design in the threaded nut holder. Design changed and eliminated the weak point.

Sent from my iPhone

> On Feb 26, 2020, at 17:01, Tom Norton <tnort...@gmail.com> wrote:
>
> I currently have a Thompson Elite seatpost and would like to switch to a setback. I see Velo Orange has one but have heard a few concerns about bolt breakage. As this is for my touring bike I really want to go with a quality product. May just a new Thompson.
>
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[Benz Ouyang]

On Thursday, February 27, 2020 at 9:00:52 AM UTC+8, nm matt wrote:

I have used the VO post on a number of different builds and have been happy.  i haven't heard about bolt failure, and certainly haven't experienced any.

Years ago, VO did a recall of their seatpost due to clamp failure. AFAIK, this issue was resolved, and I haven't heard anything bad since.

[Evan Estern]

My favorite seatpost is the Nitto Jaguar.  They are incredibly solid and strong, reasonably lightweight and very beautiful. 

[Iamkeith]

If you're inclined toward the CNC / MUSA aspects of the Thomson and aren't on a buget, the Paul Tall and Handsome post has a better-than-average setback. I see that he's added some additional diameter sizes recently as well.

[Rashid Khan]

If you decide you like the VO one, Planet X sells the same post, unbranded, for $25.

https://www.planetx.co.uk/i/q/SPHOGS/holdsworth-gran-sport-seatpost

Ships from the UK, but still works out to about $40. Planet X often has a bunch of other cheap stuff too, which might make the shipping cost more attractive. A bunch of us BoBs used to buy Voyager Hyper tires from them for $15 a pop years back.

Rashid in PHX

[Ken Freeman]

Keith and all (not intending to pick on Keith!) I think the Thomson is a great product, with two caveats.

1. The setback is about 15 mm, measuring center of clamp to center of shaft.  It's about the same setback as a classic Campagnolo 2-bolt.  

2. The setback is achieved by a shaft that has a bent shape (I'm not concerned with how they made it and don't know).  This has the effect of limiting how deep you can insert it into the seat tube.  If you have a frame in French Fit, that might not work.

Ken Freeman

Ann Arbor, MI USA

On Sat, Feb 29, 2020 at 4:08 AM Iamkeith <keith...@gmail.com> wrote:

If you're inclined toward the CNC / MUSA aspects of the Thomson and aren't on a buget, the Paul Tall and Handsome post has a better-than-average setback.  I see that he's added some additional diameter sizes recently as well.

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Ken Freeman
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[satanas]

The Thomson post would probably be the very last one I'd consider, given they're expensive, look wrong and (IMO) are ugly AF too. I'd much rather use a Kalloy Uno, or just about anything else, new or used. :-(

Later,
Stephen

[nm matt]

rashid,
good tip on the planet x post!
matt in ABQ

[Bill M.]

The VO post is limited in how far down the nose of the saddle can be tilted.  Some combinations of saddle and seat tube angle may not work.  In my case, with a Brooks saddle and 72 degree ST I was unable to adjust the saddle to where I needed it.  The clamp is also very short front to back, so i would only use it with saddles with sturdy steel rails.  

The Paul post is nice looking and has lots of setback, but I find that the clamp is a bit fiddly to install with its two independent upper clamp pieces.

I have a Thompson offset post on my Mercian.  It's inserted almost to the bend, and the Ruthworks saddlebag I use pretty well disguises the bend so it looks fine to me.  The clamp is top notch.

Bill

Stockton, CA

[James / Analog Cycles]

Google broken thomson seatpost (and stem while you are it...).  Nitto S83 is the best setback post on the market, followed by the Zipp Service Course, which is ugly but strong and forged as well.  Both are simple to adjust, and no one is gunna break the m7 (Nitto) or m6 bolts they use.  Good seatposts always have 2 bolts, and these bolts are aways oriented one in front of the other.  Side by side or single bolts can slip under excessive loads, like wacking a pot hole at 35mph.  At Analog, we pretty much only sell the Nitto, and offer other posts as a lesser, budget option, but they always follow the same design pattern.  

-James / Analog Cycles

[Stephen Poole]

IME, single bolt posts only hold if there are serrrations, which sometimes prevent getting the exact saddle tilt needed; Campag SR has been the only exception I've found, but I never used one of those off-road. Every post I've used with side by side bolts either limits fine adjustment (if there are serrations), or else slips horribly easily if bumps are encountered, i.e., on dirt.

As for the OP's question, if a 27.2 post will fit, the 2 bolt Time posts have as much setback as anything I've seen and are solid; they occasionally come up used. FSA's SL220 posts also had lots of setback and don't slip, but are black only, and again only available rarely, used.

Later,

Stephen

On Sun, 1 Mar. 2020, 07:38 James / Analog Cycles, <analog...@gmail.com> wrote:

...Good seatposts always have 2 bolts, and these bolts are aways oriented one in front of the other.  Side by side or single bolts can slip under excessive loads, like wacking a pot hole at 35mph.

[Mike Schiller]

I started using the Dia Compe Gran Compe posts a few years ago. I have had then on every bike where they work ( 250mm long) They have 30 mm of offset and a 2 bolt clamp and come in polished or black.

mike

Carlsbad Ca

On Wednesday, February 26, 2020 at 2:01:08 PM UTC-8, Tom Norton wrote:

[Tom Norton]

Thanks Mike.
I see a few setback seatposts that mention 2 screws/bolts. But not sure they function the same way as the Thompson. The Thompson functions as a micro angle adjustment. And it has been great to dial in my B17.

[Steve Palincsar]

The Nitto S84 definitely is a micro-angle adjust and has plenty of setback.

On 3/3/20 8:23 AM, Tom Norton wrote:

Thanks Mike.
I see a few setback seatposts that mention 2 screws/bolts. But not sure they function the same way as the Thompson. The Thompson functions as a micro angle adjustment. And it has been great to dial in my B17.

-- 
Steve Palincsar
Alexandria, Virginia 
USA

[Pat Smith]

I've got a Velo Orange long setback and a Thompson setback. The Thompson adjustment is SO MUCH NICER than the Velo Orange. As someone who is still struggling to dial in fit and still trying to find the right saddle I do a lot of fiddling around. It's almost impossible to make small adjustments on the fly with the Velo Orange due to the design of the bolting mechanism. Making small adjustments with the Thompson is a breeze. Also, i like how the Thompson looks, but I have it on a much more modern (gravel, sloping top tube) bike than my Velo Orange (horizontal TT classically styled touring bike). Picked up the Thompson used locally for like $30 so can't complain about price. 

Pat in DC

On Wednesday, February 26, 2020 at 5:01:08 PM UTC-5, Tom Norton wrote:

[Ken Freeman]

The early Campagnolo two-bolt post also operated the same way.  It’s setback is about as a Nitto 83.

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[Tom Norton]

As much as I like the Nitro it is a bit too much for my touring bike. Just made an offer on a black,not my favorite color, Thompson Elite Setback. So we will see.

[Nick Payne]

Stephen

I can't say my experience matches yours regarding slipping of seatpost saddle clamps. I have a couple of the Nitto S65 single bolt seatposts (non-serrated, single bolt) on bikes, and neither of those has ever slipped on me, even though they both have Carradice Camper Longflap saddlebags hanging off them in addition to my weight. I also have one of the Ritchey posts, which use side-by-side bolts and no serrations, and it hasn't slipped either. The disadvantage of either of those designs, though, is that making small adjustments to saddle angle is less convenient than on a post that uses two bolts in a fore-and-aft arrangement. But once you have the adjustment correct, I've had zero problems with any of them.

My recommendation to the OP for a setback two bolt seatpost would be the Nitto S83 or SP-72. And if you want a lot of setback, and don't mind the price, the Nitto S84, which has 37mm of setback.

Nick

[Stephen Poole]

FWIW, I haven't used the posts Nick has, but don't doubt they work. However, I've had two from-each-side posts, Bontrager & 3T with serrations which limited adjustment, and two side-by-side posts sans serrations, Specialized and 3T, and both slipped. The Specialized post was especially bad, and on a gravel bike. :-(

Later,

Stephen