I’m needing a new seat post for my MUni and a suspension post is an option. As I
understand it they only really provide a benefit when travelling over bumpy
ground and not for absorbing impact from drops. Please correct me as this is
based on an old post I read some time ago.
I’m wondering if the extra flexibility would actually impede hopping and jumping
as some of the pull on the seat would be absorbed during launch. Can anyone
comment on this or, for that matter, any other pros / cons of suspension posts?
Shockposts do add a significant measure of comfort for cross-country MUni,
especially for all the little bumps where you’re still sitting down. Somewhat
ironically they don’t add much comfort for big drops, as you indicate.
The main problem is that unless you are really tall the shocks come too long to
fit in a unicycle and need to be modified (shortened).
I’ve used a Rock Shox post for a while and it worked OK although I did need to
replace the internal keying mechanism after around 8 months (the seat started to
wobble from side to side). This is cheap and easy to do, though. USE posts are
probably the best but are expensive. Based on a look at the internals of a USE
post, it also looks like the best post for modifying. Basically, the internals
are a spring plus a 3" length of spacer. By removing the spacer it looks like
you could hack off about 3" of the post length at the bottom.
I’ve never found that shock posts posed any problem for hopping or pulling up on
the seat. Some people have theorized that trapezoidal posts avoid this “problem”
better than telescoping posts, but I personally don’t agree since I don’t think
it’s a problem in the first place.
Cheers,
Kris.
— Neil Dunlop <n.dunlop@kildrummy.co.uk> wrote: > Hi All, > > I’m needing a new seat post for my MUni and a suspension post is an option. As > I understand it they only really provide a benefit when travelling over bumpy > ground and not for absorbing impact from drops. Please correct me as this is > based on an old post I read some time ago. > > I’m wondering if the extra flexibility would actually impede hopping and > jumping as some of the pull on the seat would be absorbed during launch. Can > anyone comment on this or, for that matter, any other pros / cons of > suspension posts? > > Cheers, Neil >
> Shockposts do add a significant measure of comfort for cross-country MUni, > especially for all the little bumps where you’re still sitting down.
The longer the ride, the more the payoff!
> ironically they don’t add much comfort for big drops, as you indicate.
Unless you do big drops sitting down
The only drawback I have found with my suspension post (Thudbuster Uni-Pivot) is
that occasionally you’ll hit a big bump while your pedals are vertical. This can
cause you to bounce up off the seat, and take your bottom foot off the pedal.
This is rare enough, though, to be far outweighed by the comfort provided the
rest of the time.
> I’ve never found that shock posts posed any problem for hopping or pulling up > on the seat. Some people have theorized that trapezoidal posts avoid this > “problem” better than telescoping posts, but I personally don’t agree since I > don’t think it’s a problem in the first place.
I have also used a more recent (trapezoidal) model of Thudbuster, on a Telford,
and found it to be excellent. I believe that most posts have to be set stiff
enough that they are at the top before you even stand up. So pulling up will not
lose you any energy. The only concern I’ve had was that the post be strong
enough to take the stress of all that lifting. I know the Thudbusters have no
problem with it.
— Carl Hoyer <choyer@i-d-g.com> wrote: > If we’re starting to make notes and take design suggestions for a new uni > seat, perhaps we should also look at a suspension seat post specific to MUni? > or are the seat posts out there for bikes good enough for uni’s?
My opinion is that in the short term the best solution might be to try to
convince USE to make a batch of extra-short seatposts. I’ve sort of been working
on this but we’ll see how it goes.
>From: “Roger” <Roger@unicycle.uk.com> > >Kris, > >I have had this done and unfortunately it reduced the life of the seatpost >dramatically. The seat post has a rather exaggerated wiggle on it now. > >Roger > >------------------------------------------------- > The UK’s Unicycle Source http://www.unicycle.uk.com/ >------------------------------------------------- >----- Original Message ----- From: “Kris Holm” <danger_uni@yahoo.com> To: "Carl >Hoyer" <choyer@i-d-g.com> >Cc: <unicycling@winternet.com> Sent: Sunday, December 10, 2000 11:47 PM > Subject: Re: Pros and cons of suspension seat posts > > > > Hi, > > > > — Carl Hoyer <choyer@i-d-g.com> wrote: > > > If we’re starting to make notes and take design suggestions for a new uni > > > seat, perhaps we should also look at a suspension seat post specific to > > > MUni? or are the seat posts out there for bikes good enough for uni’s? > > > > My opinion is that in the short term the best solution might be to try >to convince USE to make a > > batch of extra-short seatposts. I’ve sort of been working on this but >we’ll see how it goes. > > > > -Kris > > > > > > __________________________________________________ > > Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. > > http://shopping.yahoo.com/ > > >
Telescoping seatpost shocks are too long for almost everyone except for
professional basketball players. For most people they need to be chopped
down and have the insides reworked a bit to be made short enough to be
usable on a muni.
I’m in the process of looking for a shock for my Vortex. I’m sure that the one I
find will need to be cut down to be made short enough for me.
john_childs
>From: “Neil Dunlop” <neild@roachmill.demon.co.uk> > >Cheers for everybodys input on this but, unless I can get some leg extensions, >shock posts are only just too long for me The shortest posts I could find >start at 350 which is about 50mm too much. > >Using shorter cranks would probably give me the extra room for a longer post >but I guess my butt will just have to grin an bear it > >Neil >
I was really impressed with the Thudbuster Quadra-pivot on Geoff’s uni. It’s got
three or four inches of travel, and there are no moving parts inside the seat
post. The only problem there is you either need a sloping seat tube on your
unicycle (I’m not sure what the optimum angle would be, but I think you’d
definitely want more angle than a bike has), or else put a kink in the post
right before it enters the suspension unit.
Chris
Kris Holm wrote:
> > Neil, > > Shockposts do add a significant measure of comfort for cross-country MUni, > especially for all the little bumps where you’re still sitting down. Somewhat > ironically they don’t add much comfort for big drops, as you indicate. > > The main problem is that unless you are really tall the shocks come too long > to fit in a unicycle and need to be modified (shortened). > > I’ve used a Rock Shox post for a while and it worked OK although I did need to > replace the internal keying mechanism after around 8 months (the seat started > to wobble from side to side). This is cheap and easy to do, though. USE posts > are probably the best but are expensive. Based on a look at the internals of a > USE post, it also looks like the best post for modifying. Basically, the > internals are a spring plus a 3" length of spacer. By removing the spacer it > looks like you could hack off about 3" of the post length at the bottom. > > I’ve never found that shock posts posed any problem for hopping or pulling up > on the seat. Some people have theorized that trapezoidal posts avoid this > “problem” better than telescoping posts, but I personally don’t agree since I > don’t think it’s a problem in the first place. > > Cheers, > > Kris. > > — Neil Dunlop <n.dunlop@kildrummy.co.uk> wrote: > > Hi All, > > > > I’m needing a new seat post for my MUni and a suspension post is an option. > > As I understand it they only really provide a benefit when travelling over > > bumpy ground and not for absorbing impact from drops. Please correct me as > > this is based on an old post I read some time ago. > > > > I’m wondering if the extra flexibility would actually impede hopping and > > jumping as some of the pull on the seat would be absorbed during launch. Can > > anyone comment on this or, for that matter, any other pros / cons of > > suspension posts? > > > > Cheers, Neil > > > > __________________________________________________ > Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. > http://shopping.yahoo.com/
I’ve been contemplating the purchase of a suspension seat post for MUni and my
newly assembled carbon fiber base/packing material stuffed/air pillow
filled/Roach seat covered ultimate comfort seat (inspired by David Maxfield’s
seat :). The only issue that was making me think twice about going out and
getting one was its effect on hopping. I wasn’t sure how the upward force would
affect the suspension mechanism (I thank you Kris for the answer).
If we’re starting to make notes and take design suggestions for a new uni seat,
perhaps we should also look at a suspension seat post specific to MUni? or are
the seat posts out there for bikes good enough for uni’s?
Carl
Kris Holm wrote: > > Neil, > > Shockposts do add a significant measure of comfort for cross-country MUni, > especially for all the little bumps where you’re still sitting down. Somewhat > ironically they don’t add much comfort for big drops, as you indicate. > > The main problem is that unless you are really tall the shocks come too long > to fit in a unicycle and need to be modified (shortened). > > I’ve used a Rock Shox post for a while and it worked OK although I did need to > replace the internal keying mechanism after around 8 months (the seat started > to wobble from side to side). This is cheap and easy to do, though. USE posts > are probably the best but are expensive. Based on a look at the internals of a > USE post, it also looks like the best post for modifying. Basically, the > internals are a spring plus a 3" length of spacer. By removing the spacer it > looks like you could hack off about 3" of the post length at the bottom. > > I’ve never found that shock posts posed any problem for hopping or pulling up > on the seat. Some people have theorized that trapezoidal posts avoid this > “problem” better than telescoping posts, but I personally don’t agree since I > don’t think it’s a problem in the first place. > > Cheers, > > Kris. > > — Neil Dunlop <n.dunlop@kildrummy.co.uk> wrote: > > Hi All, > > > > I’m needing a new seat post for my MUni and a suspension post is an option. > > As I understand it they only really provide a benefit when travelling over > > bumpy ground and not for absorbing impact from drops. Please correct me as > > this is based on an old post I read some time ago. > > > > I’m wondering if the extra flexibility would actually impede hopping and > > jumping as some of the pull on the seat would be absorbed during launch. Can > > anyone comment on this or, for that matter, any other pros / cons of > > suspension posts? > > > > Cheers, Neil > > > > __________________________________________________ > Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. > http://shopping.yahoo.com/
Cheers for everybodys input on this but, unless I can get some leg extensions,
shock posts are only just too long for me The shortest posts I could find
start at 350 which is about 50mm too much.
Using shorter cranks would probably give me the extra room for a longer post but
I guess my butt will just have to grin an bear it
Neil
“Neil Dunlop” <n.dunlop@kildrummy.co.uk> wrote in message news:AHECLPPMPEFCOBOOLPOEOEMKCAAA.n.dunlop@kildrummy.co.uk… > Hi All, > > I’m needing a new seat post for my MUni and a suspension post is an
option. > As I understand it they only really provide a benefit when travelling over > bumpy ground and not for absorbing impact from drops. Please correct me as > this is based on an old post I read some time ago. > > I’m wondering if the extra flexibility would actually impede hopping and > jumping as some of the pull on the seat would be absorbed during launch.
Can > anyone comment on this or, for that matter, any other pros / cons of > suspension posts? > > Cheers, Neil
> Hi, > > — Carl Hoyer <choyer@i-d-g.com> wrote: > > If we’re starting to make notes and take design suggestions for a new uni > > seat, perhaps we should also look at a suspension seat post specific to > > MUni? or are the seat posts out there for bikes good enough for uni’s? > > My opinion is that in the short term the best solution might be to try to
convince USE to make a > batch of extra-short seatposts. I’ve sort of been working on this but
we’ll see how it goes. > > -Kris > > > __________________________________________________ > Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. > http://shopping.yahoo.com/
The shortest posts I could find