Stem height

[Cyclopath! - Keiron]

Issues with the 'stack' height of stems. Why aren't these posted on online
shops is it not considered a relevant measurment? Anyway, i'm need a budget
stem, between 60 and 90mm in length, degree of rise about 20 degrees from
horizontal but the stack height needs to be 40mm. The 2 i've purchased are
larger than this and i'm starting to think every bicycle i own is made from
unstandard (aka shite) parts. Please help. The golden measument is 40mm, the
rest doesn't matter too greatly as long as it doesn't exceed 90mm in length.

ideas?

Thanks

 

[* * Chas]

"Cyclopath! - Keiron" <[email protected]> wrote in message
news:[email protected]...
> Issues with the 'stack' height of stems. Why aren't these posted on
online
> shops is it not considered a relevant measurment? Anyway, i'm need a
budget
> stem, between 60 and 90mm in length, degree of rise about 20 degrees
from
> horizontal but the stack height needs to be 40mm. The 2 i've purchased
are
> larger than this and i'm starting to think every bicycle i own is made
from
> unstandard (aka shite) parts. Please help. The golden measument is
40mm, the
> rest doesn't matter too greatly as long as it doesn't exceed 90mm in
length.
>
> ideas?
>
> Thanks
>

Road or MTB? What diameter steering tube?

Chas.

 

[Cyclopath! - Keiron]

* * Chas <[email protected]> wrote in message
news:[email protected]...
>
> "Cyclopath! - Keiron" <[email protected]> wrote in message
> news:[email protected]...
> > Issues with the 'stack' height of stems. Why aren't these posted on
> online
> > shops is it not considered a relevant measurment? Anyway, i'm need a
> budget
> > stem, between 60 and 90mm in length, degree of rise about 20 degrees
> from
> > horizontal but the stack height needs to be 40mm. The 2 i've purchased
> are
> > larger than this and i'm starting to think every bicycle i own is made
> from
> > unstandard (aka shite) parts. Please help. The golden measument is
> 40mm, the
> > rest doesn't matter too greatly as long as it doesn't exceed 90mm in
> length.
> >
> > ideas?
> >
> > Thanks
> >
>
> Road or MTB? What diameter steering tube?
>
> Chas.
>
Oh yes sorry.
MTB and the steer tube is 28.5/29diameter. my calipers are pretty poor
quality so which ever is standard of those 2, assuming either one is.

Thanks

 

[[email protected]]

Cyclopath! - Keiron wrote:
> Issues with the 'stack' height of stems. Why aren't these posted on online
> shops is it not considered a relevant measurment?

Its not too relevant. The height of the stem clamp and the spacers
must be about 2-3 mm greater than the amount of fork steerer tube above
the headset. If for some reason you or the biek shop cut your steerer
tube extra short and now cannot find a different stem with as short of
a stem clamp, then you may have some troubles. But if the stem clamp
sticks up 5-10 mm above the fork steerer, it won't matter too much.
Unless its a carbon fork steerer, and then it might. I'd suggest mail
ordering a variety of stems and finding the one that fits. Or go to
your local bike shop(s) and measure the ones they have on hand and have
them order one in the right length if they don't have it on hand. Life
would be wonderful if all problems were as easy to solve as yours.




Anyway, i'm need a budget
> stem, between 60 and 90mm in length, degree of rise about 20 degrees from
> horizontal but the stack height needs to be 40mm. The 2 i've purchased are
> larger than this and i'm starting to think every bicycle i own is made from
> unstandard (aka shite) parts. Please help. The golden measument is 40mm, the
> rest doesn't matter too greatly as long as it doesn't exceed 90mm in length.
>
> ideas?
>
> Thanks

 

[Cyclopath! - Keiron]

<[email protected]> wrote in message
news:[email protected]...
>
> Cyclopath! - Keiron wrote:
> > Issues with the 'stack' height of stems. Why aren't these posted on
online
> > shops is it not considered a relevant measurment?
>
> Its not too relevant. The height of the stem clamp and the spacers
> must be about 2-3 mm greater than the amount of fork steerer tube above
> the headset. If for some reason you or the biek shop cut your steerer
> tube extra short and now cannot find a different stem with as short of
> a stem clamp, then you may have some troubles. But if the stem clamp
> sticks up 5-10 mm above the fork steerer, it won't matter too much.
> Unless its a carbon fork steerer, and then it might. I'd suggest mail
> ordering a variety of stems and finding the one that fits. Or go to
> your local bike shop(s) and measure the ones they have on hand and have
> them order one in the right length if they don't have it on hand. Life
> would be wonderful if all problems were as easy to solve as yours.

EASY?! EASY?! Well okay, easy but ruddy annoying, not that i'm easily
angered (1,2,3....9, arrrrggh!!)

The overlap without the spacers is about 5mm and it doesn't look as if i
tightened the bolt it would damage the steer tube top so i may run this
stem, but riddle me this probably elementary, 'easy' question; can i
(obviously i could but is it 'proper' to) run a stem directly on top of a
headset without spacers? Would still like to hear of alternative stems
fitting that description. thanks.

 

[Cyclopath! - Keiron]

Further clamp info:

Handle bar is 25.something mm

thanks

 

[Lou Holtman]

"Cyclopath! - Keiron" <[email protected]> wrote in message
news:[email protected]...
>
> <[email protected]> wrote in message
> news:[email protected]...
> >
> > Cyclopath! - Keiron wrote:
> > > Issues with the 'stack' height of stems. Why aren't these posted on
> online
> > > shops is it not considered a relevant measurment?
> >
> > Its not too relevant. The height of the stem clamp and the spacers
> > must be about 2-3 mm greater than the amount of fork steerer tube above
> > the headset. If for some reason you or the biek shop cut your steerer
> > tube extra short and now cannot find a different stem with as short of
> > a stem clamp, then you may have some troubles. But if the stem clamp
> > sticks up 5-10 mm above the fork steerer, it won't matter too much.
> > Unless its a carbon fork steerer, and then it might. I'd suggest mail
> > ordering a variety of stems and finding the one that fits. Or go to
> > your local bike shop(s) and measure the ones they have on hand and have
> > them order one in the right length if they don't have it on hand. Life
> > would be wonderful if all problems were as easy to solve as yours.
>
> EASY?! EASY?! Well okay, easy but ruddy annoying, not that i'm easily
> angered (1,2,3....9, arrrrggh!!)
>
> The overlap without the spacers is about 5mm and it doesn't look as if i
> tightened the bolt it would damage the steer tube top so i may run this
> stem, but riddle me this probably elementary, 'easy' question; can i
> (obviously i could but is it 'proper' to) run a stem directly on top of a
> headset without spacers?

Of course. 'Normal' stack height of stems is 45 mm.

Lou

 

[Werehatrack]

On Fri, 13 Oct 2006 14:55:40 GMT, "Cyclopath! - Keiron"
<[email protected]> wrote:

>
><[email protected]> wrote in message
>news:[email protected]...
>>
>> Cyclopath! - Keiron wrote:
>> > Issues with the 'stack' height of stems. Why aren't these posted on
>online
>> > shops is it not considered a relevant measurment?
>>
>> Its not too relevant. The height of the stem clamp and the spacers
>> must be about 2-3 mm greater than the amount of fork steerer tube above
>> the headset. If for some reason you or the biek shop cut your steerer
>> tube extra short and now cannot find a different stem with as short of
>> a stem clamp, then you may have some troubles. But if the stem clamp
>> sticks up 5-10 mm above the fork steerer, it won't matter too much.
>> Unless its a carbon fork steerer, and then it might. I'd suggest mail
>> ordering a variety of stems and finding the one that fits. Or go to
>> your local bike shop(s) and measure the ones they have on hand and have
>> them order one in the right length if they don't have it on hand. Life
>> would be wonderful if all problems were as easy to solve as yours.
>
>EASY?! EASY?! Well okay, easy but ruddy annoying, not that i'm easily
>angered (1,2,3....9, arrrrggh!!)
>
>The overlap without the spacers is about 5mm

That's actually near the low end of what's considered permissible.

>and it doesn't look as if i
>tightened the bolt it would damage the steer tube top

Unless it's a fragile carbon steerer, quite correct.

>so i may run this
>stem, but riddle me this probably elementary, 'easy' question; can i
>(obviously i could but is it 'proper' to) run a stem directly on top of a
>headset without spacers?

I have yet to see a headset for which this would be a problem, and
many bikes are set up with no spacers between the stem and headset
when delivered. (And yes, on occasion, a bike is configured with
spacers *above* the stem; it's odd, but it does no harm, and permits
rethinking the stem height later.)



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[Cyclopath! - Keiron]

Many thanks to you all for advice and knowledge. Will run with spacers for
now but if anyone else finds themselves in the same position it seems that
the EASTON EA50 Stem is of the exact spec for my needs in case, that is 40mm
height, 90mm length and 25.4mm clamp (most probably further permutations of
the model too).

Thanks again.

Cheers