seat clamp size for nimus II frame?

delcypher wrote:
Despite unicycle.com listing it that way (it does make it easier to buy
stuff from their site though) a 25.4 seatpost will not work with a 25.4
clamp as the seat tube is thicker the 0mm as the majority of seatclamp
manufactures (let's ignore UDC here) refer to the external diameter of
the seat tube( as in the frame tubing) not the seatpost because not all
frame tubing is the same thickness.

if the tube is about 1mm thick and the seatpost is 25.4, it'll probably
be something from 27.4 (accounting both sides of the tube) upwards.

If the bike shop will let you pop down there with your unicycle and get
them to measure accurately the external diameter of your frame and then
go from there.



ignoring UDC
everything i have said still applies.
you are right a 25.4 seatpost clamp's ID is not 25.4
actually most seatpost clamps are 2 layered in the middle (one over the
seat post and one over the frame)
so should we call it a 25.4and 27.4 seat post clamp to confuse us
more?
it is designed to work with a 25.4 frame and 25.4 seatpost.
which makes total sense.
and if you want to be technicall. a 25.4 ID frame and and a 25.4 OD
seatpost would not work. because a minescule layer of metal would have
to take up the same space. so should we make the seatpost
25.39999999(repeating)?

and their is nothing wrong with taking the uni into a bike shop.


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Unicaw89 wrote:
Koxx rapes Torker hard!




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sorry I forgot to ask because I just remembered occassionally seat clamp
manufacturers actually have clamp size etched on the clamp. Have you
taken the original clamp off and taken a look all over the clamp to see
if it's size is written on it anywhere?


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here is proof supporting what I said, we all know KH's are 27.2, well,
UDC lists the clamp size as 32mm.
here's the link http://www.unicycle.com/shopping/shopexd.asp?id=1032


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kerosian wrote:
here is proof supporting what I said, we all know KH's are 27.2, well,
UDC lists the clamp size as 32mm.
here's the link http://www.unicycle.com/shopping/shopexd.asp?id=1032



NO! UDC says"Aluminum construction in black with Kris Holm logo on the
front, 32mm internal diameter, weighs 68g. These clamps will only fit
the Aluminium KH frames."
They list the ID as 32.
so what is your point?

delcypher: never bothered. i can tell what it fits by looking at it.


--
torkerdx

gordito8me wrote:
it's like running across the highway at rush hour. Dangerous, stupid,
but not really that fun.




Unicaw89 wrote:
Koxx rapes Torker hard!




skianduniaddict wrote:
never give 4 teenagers a camera... they go crazy
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here it is again, but it seems like they variate between both methods,
between the OD of the seat tube, or the OD of the seatpost, they use
both at different times
Here it is my way http://www.unicycle.com/shopping/shopexd.asp?id=245
and your way http://www.unicycle.com/shopping/shopexd.asp?id=928


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@torkerDX -
- It's true that most seatclamps have two interal diamters, the larger
one is the important one. The smaller int. dia. is the collar which
stops the clamp sliding down the frame.

'So should we call it a 25.4 and 27.4 clamp to confuse us more?' - I'm
affraid we don't have much choice because that is the way seat clamp
manufactures measure it. Personally I think it's better that way as not
all seat tubing is the same thickness which means a 25.4 seatpost will
not always go with same clamp.

'because a minescule layer of metal' - the frame is not minescule it's
probably about 1mm thick which if you count both sides of the seat
tubing(frame) is 2mm so the clamp would need to be about 2mm bigger
than the seatpost, making the clamp 27.4mm. That is not a minescule
difference.

@thejdw - Personally I think 28.6mm is probably the right size assuming
your frame takes a 25.4mm seatpost as when I worked for a bike shop in
the past a 28.6mm clamp always went with the bikes that had a 25.4mm
seatpost (the seatpost size will written on your seatpost by the way,
near the bottom underneath the safety mark.


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this thread is not worth argueing. i am right. i know i am right.
maybe i am not getting my point across. at this point do i really care
you don't believe i am right? no

@thejdw take it into a bike shop to get the size seat post clamp you
need. or just get a 25.4 which is what you need


--
torkerdx

gordito8me wrote:
it's like running across the highway at rush hour. Dangerous, stupid,
but not really that fun.




Unicaw89 wrote:
Koxx rapes Torker hard!




skianduniaddict wrote:
never give 4 teenagers a camera... they go crazy
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Is it me or does that come across as slightly arrogant and conceited? Ah
well seeing as we're going nowhere slowly, I suggest as torkerdx has
said to go the bike shop, they should be able to sort something out for
you.

-@thejdw I still personally thick you'll be needing a 28.6mm clamp or
round about that area. Let us no how it goes so we can settle this
argument properly.


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torkerdx wrote:
for the frame, seat post, and seat post clamp you use the same number.
for the nimbus 2 frame it is a 25.4 frame. referring to the ID (inner
diameter).
for the seat post it is a 25.4 referring to the OD
and the clamp is also 25.4 referring to the size post it holds.

so you need a 25.4 seat post clamp



Just a quick note in case anyone finds this in the search. The advice
above is wrong. Do not follow it if you want to buy something that
works on your frame, you'll end up buying something too small, and
being screwed.

A 25.4 frame refers to the ID of the frame, correct. A 25.4 post refers
to the OD of the post.

But the clamp sizes are measured in terms of the inner diameter of the
clamp.

That is why when you look at 'this seatpost'
(http://tinyurl.com/2nbv5z) and 'these seat clamps'
(http://tinyurl.com/297332), the numbers for the seat clamps are all
slightly bigger than the numbers for seatposts.

If this wasn't the case, frame materials that use different
thicknesses, would have to have different clamps, you'd have say a 25.4
aluminium frame clamp, a 25.4 steel frame clamp, a 25.4 really fat
steel frame clamp etc etc.

Joe


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delcypher wrote:
Is it me or does that come across as slightly arrogant and conceited? Ah
well seeing as we're going nowhere slowly, I suggest as torkerdx has
said to go the bike shop, they should be able to sort something out for
you.

-@thejdw I still personally thick you'll be needing a 28.6mm clamp or
round about that area. Let us no how it goes so we can settle this
argument properly.


I'm gona order a 28.6mm, I'll tell you if it works


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