Seatpost types
#1
Senior Member
Thread Starter
Seatpost types
I've had some difficulties with my Specialized micro-adjust side clamp seatpost. I ride cross bike on local hardpack gravel paths often over rough transitions to pavement and dirt. The seat nose will occasionally shift up, no matter how much I tighten the clamp bolt. Any tighter and I fear the bolt will shear.
The original seatpost with the bike was a ratcheted single bolt design that never budged. So now I've had enough of the micro-adjust side clamp design and replaced with a Specialized 2-bolt version. It's now stable as a rock throughout my rides.
But for the general community, has anyone run into these issues? In my experience, just bad from a design point of view. And I'm not heavy (180lbs).
The original seatpost with the bike was a ratcheted single bolt design that never budged. So now I've had enough of the micro-adjust side clamp design and replaced with a Specialized 2-bolt version. It's now stable as a rock throughout my rides.
But for the general community, has anyone run into these issues? In my experience, just bad from a design point of view. And I'm not heavy (180lbs).
Last edited by Richard8655; 10-17-15 at 11:34 AM.
#2
Ozark Hillbilly
Join Date: Jul 2015
Location: Show Me State
Posts: 680
Bikes: Long Haul Trucker
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 136 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
I had the same problems with saddle movement, I am a bit heavier at 188. The bike had a single bolt setback seatpost and I had problems with movement in every direction. Seatpost slipping, fore, aft and tilt movement.
Just a few days ago I installed a Thomson Elite Setback post with a Surly Constrictor clamp. I'll wait and see if this works.
I can live with some stuff, but not seat/seatpost movement. Drives me crazy and it's a pain to readjust if your picky about the saddle position.
Just a few days ago I installed a Thomson Elite Setback post with a Surly Constrictor clamp. I'll wait and see if this works.
I can live with some stuff, but not seat/seatpost movement. Drives me crazy and it's a pain to readjust if your picky about the saddle position.
#3
Banned
2 things the diameter of the shaft and the head type .. well 3 if you include the length
I still like the old Campag 2 bolt heads at the top Campag seatposts , but they were designed to use leather saddles ..
The side clamping Race Face is an interesting design there is 1 bolt squeezing the rails , and a second one gripping the seat post shaft
you can change the saddle angle with it and not loosen the bolt gripping the saddle rails..
I still like the old Campag 2 bolt heads at the top Campag seatposts , but they were designed to use leather saddles ..
The side clamping Race Face is an interesting design there is 1 bolt squeezing the rails , and a second one gripping the seat post shaft
you can change the saddle angle with it and not loosen the bolt gripping the saddle rails..
#4
Senior Member
Thread Starter
You described my same frustration exactly. It's the last thing you want to fiddle with and adjust on a long ride.
I'm perplexed with this trend. Curiously it's the only design Specialized is now selling for their seatposts. In the meantime, hope your Thomson/Surly solution has good success.
I'm perplexed with this trend. Curiously it's the only design Specialized is now selling for their seatposts. In the meantime, hope your Thomson/Surly solution has good success.
#5
Senior Member
Thread Starter
2 things the diameter of the shaft and the head type .. well 3 if you include the length
I still like the old Campag 2 bolt heads at the top Campag seatposts , but they were designed to use leather saddles ..
The side clamping Race Face is an interesting design there is 1 bolt squeezing the rails , and a second one gripping the seat post shaft
you can change the saddle angle with it and not loosen the bolt gripping the saddle rails..
I still like the old Campag 2 bolt heads at the top Campag seatposts , but they were designed to use leather saddles ..
The side clamping Race Face is an interesting design there is 1 bolt squeezing the rails , and a second one gripping the seat post shaft
you can change the saddle angle with it and not loosen the bolt gripping the saddle rails..
#6
Banned
Campagnolo made a wrench for their seat posts , it has a Z offset to reach the Bolt head ..
accessed lifting the leather side skirt.
6 point box type on 1 end the other end, an open end, fits the tension nut on Brooks saddles
https://www.classicrendezvous.com/ima...en_sr_sp_2.JPG
accessed lifting the leather side skirt.
6 point box type on 1 end the other end, an open end, fits the tension nut on Brooks saddles
https://www.classicrendezvous.com/ima...en_sr_sp_2.JPG
Last edited by fietsbob; 10-17-15 at 12:15 PM.
#7
FLIR Kitten to 0.05C
Join Date: Sep 2014
Location: Lincoln, Nebraska
Posts: 5,331
Bikes: Roadie: Seven Axiom Race Ti w/Chorus 11s. CX/Adventure: Carver Gravel Grinder w/ Di2
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 2349 Post(s)
Liked 406 Times
in
254 Posts
I've had some difficulties with my Specialized micro-adjust side clamp seatpost. I ride cross bike on local hardpack gravel paths often over rough transitions to pavement and dirt. The seat nose will occasionally shift up, no matter how much I tighten the clamp bolt. Any tighter and I fear the bolt will shear.
The original seatpost with the bike was a ratcheted single bolt design that never budged. So now I've had enough of the micro-adjust side clamp design and replaced with a Specialized 2-bolt version. It's now stable as a rock throughout my rides.
But for the general community, has anyone run into these issues? In my experience, just bad from a design point of view. And I'm not heavy (180lbs).
The original seatpost with the bike was a ratcheted single bolt design that never budged. So now I've had enough of the micro-adjust side clamp design and replaced with a Specialized 2-bolt version. It's now stable as a rock throughout my rides.
But for the general community, has anyone run into these issues? In my experience, just bad from a design point of view. And I'm not heavy (180lbs).
They do look slick...but if they don't work that well at holding the saddle then they don't work that well.
#8
Senior Member
Join Date: Mar 2008
Posts: 8,688
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1074 Post(s)
Liked 295 Times
in
222 Posts
The weight of the saddle is entirely insignificant compared to the forces the rider creates.
What does a Brooks weigh, 2 lbs?
That's a tad more than 1% of your weight, and then we haven't even considered the dynamics if you fail to go light when hitting a bump.
Don't blame the saddle.
#9
Senior Member
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,319
Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Liked 1,092 Times
in
723 Posts
No.
The weight of the saddle is entirely insignificant compared to the forces the rider creates.
What does a Brooks weigh, 2 lbs?
That's a tad more than 1% of your weight, and then we haven't even considered the dynamics if you fail to go light when hitting a bump.
Don't blame the saddle.
The weight of the saddle is entirely insignificant compared to the forces the rider creates.
What does a Brooks weigh, 2 lbs?
That's a tad more than 1% of your weight, and then we haven't even considered the dynamics if you fail to go light when hitting a bump.
Don't blame the saddle.
#10
Senior Member
Thread Starter
Campagnolo made a wrench for their seat posts , it has a Z offset to reach the Bolt head ..
accessed lifting the leather side skirt.
6 point box type on 1 end the other end, an open end, fits the tension nut on Brooks saddles
https://www.classicrendezvous.com/ima...en_sr_sp_2.JPG
accessed lifting the leather side skirt.
6 point box type on 1 end the other end, an open end, fits the tension nut on Brooks saddles
https://www.classicrendezvous.com/ima...en_sr_sp_2.JPG
#11
Senior Member
Thread Starter
No.
The weight of the saddle is entirely insignificant compared to the forces the rider creates.
What does a Brooks weigh, 2 lbs?
That's a tad more than 1% of your weight, and then we haven't even considered the dynamics if you fail to go light when hitting a bump.
Don't blame the saddle.
The weight of the saddle is entirely insignificant compared to the forces the rider creates.
What does a Brooks weigh, 2 lbs?
That's a tad more than 1% of your weight, and then we haven't even considered the dynamics if you fail to go light when hitting a bump.
Don't blame the saddle.
#12
Banned
https://www.classicrendezvous.com/ima...en_sr_sp_2.JPG
not really.. 1 its not Carbon.. and it's about 40 years earlier .
Race face seat post I own seems to have dropped from their production It's aluminum Too..
I also have a cane creek thudbuster seat post ..
Similar to Specialized design.
Race face seat post I own seems to have dropped from their production It's aluminum Too..
I also have a cane creek thudbuster seat post ..
#13
Senior Member
Thread Starter
https://www.classicrendezvous.com/ima...en_sr_sp_2.JPG
not really.. 1 its not Carbon.. and it's about 40 years earlier .
Race face seat post I own seems to have dropped from their production It's aluminum Too..
I also have a cane creek thudbuster seat post ..
not really.. 1 its not Carbon.. and it's about 40 years earlier .
Race face seat post I own seems to have dropped from their production It's aluminum Too..
I also have a cane creek thudbuster seat post ..
Last edited by Richard8655; 10-17-15 at 01:40 PM.
#14
Old fart
Join Date: Nov 2004
Location: Appleton WI
Posts: 24,784
Bikes: Several, mostly not name brands.
Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 3587 Post(s)
Liked 3,400 Times
in
1,934 Posts
Campagnolo made a wrench for their seat posts , it has a Z offset to reach the Bolt head ..
accessed lifting the leather side skirt.
6 point box type on 1 end the other end, an open end, fits the tension nut on Brooks saddles
https://www.classicrendezvous.com/ima...en_sr_sp_2.JPG
accessed lifting the leather side skirt.
6 point box type on 1 end the other end, an open end, fits the tension nut on Brooks saddles
https://www.classicrendezvous.com/ima...en_sr_sp_2.JPG
#15
Senior Member
Thread Starter
It isn't just Specialized...Moots, Lynskey, and Erisksen all make single side bolt clamp posts like the ones I believe you are talking about.
They do look slick...but if they don't work that well at holding the saddle then they don't work that well.
They do look slick...but if they don't work that well at holding the saddle then they don't work that well.
I had the same problems with saddle movement, I am a bit heavier at 188. The bike had a single bolt setback seatpost and I had problems with movement in every direction. Seatpost slipping, fore, aft and tilt movement.
Just a few days ago I installed a Thomson Elite Setback post with a Surly Constrictor clamp. I'll wait and see if this works.
I can live with some stuff, but not seat/seatpost movement. Drives me crazy and it's a pain to readjust if your picky about the saddle position.
Just a few days ago I installed a Thomson Elite Setback post with a Surly Constrictor clamp. I'll wait and see if this works.
I can live with some stuff, but not seat/seatpost movement. Drives me crazy and it's a pain to readjust if your picky about the saddle position.
Last edited by Richard8655; 10-17-15 at 06:00 PM.
#16
Banned
Guess finally you are stuck then with that Loyalty blocking your using any thing else.. thanks for playing ..
Ergon seat posts are another interesting design ERGON BIKE ERGONOMICS
It's simpler for Me having had the <C> one for 30+ years.
FWIW Center cut out saddles make it a snap ..
Ergon seat posts are another interesting design ERGON BIKE ERGONOMICS
While the Campagnolo #771 Saddle Spanner is marginally better than an ordinary combo wrench on those posts, a 10mm flex-head ratchet is much, much better (and probably less expensive and easier to find, these days).
FWIW Center cut out saddles make it a snap ..
Last edited by fietsbob; 10-17-15 at 07:07 PM.
#17
Senior Member
Thread Starter
Not brand loyalty at play here, but an effective solution that works well in my opinion. Nothing stuck in this decision.
#18
Banned
Maybe a different saddle will work better with the post you like. IDK.. its a coin toss..
I am less component weight conscious.. Thudbuster posts have a variety of elastomer densities to adjust to rider weight,,
UK's USE is similar.. they had a package of various internal springs and elastomers in Different type of seat Post.
I had a German Airwings suspension post [Koga OEM Pick] but it is a zero set back head, CC has setback ..
I am less component weight conscious.. Thudbuster posts have a variety of elastomer densities to adjust to rider weight,,
UK's USE is similar.. they had a package of various internal springs and elastomers in Different type of seat Post.
I had a German Airwings suspension post [Koga OEM Pick] but it is a zero set back head, CC has setback ..
Last edited by fietsbob; 10-17-15 at 07:29 PM.
#19
Senior Member
Thread Starter
No. I think it's purely the head design. The 2 bolt should work fine with the saddle I use. Looking mostly at competent and cost-effective designs and brands. High-end not really my interest or need.
#20
Old fart
Join Date: Nov 2004
Location: Appleton WI
Posts: 24,784
Bikes: Several, mostly not name brands.
Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 3587 Post(s)
Liked 3,400 Times
in
1,934 Posts