Clive George wrote:
> "Duncan Smith" <[email protected]> wrote in message
> news:[email protected]...
>
>>> "Spacer kit"? Just use any aluminum headset spacer..no need for them
>>> to be 'Chris King'..
>>
>> Guess not. But if I follow that to its conclusion I could just use
>> any alu headset.
>
> Think about the engineering involved and where the problems will be.
> Headset : bearings, seals, and stuff to hold them in place. Lots of
> chances to use lower quality bearings, bits which don't fit as well, etc.
>
> Spacer : ring of metal (or CF if you're feeling posey 
). Even I
> could probably make a straight spacer...
Are you sure? Those are very special spacers according to their website,
I cite:
Spacers are an important link in properly setting up your headset. While
used to adjust the height of your stem, they transfer important
alignment from the bottom of your stem to the top of the headset.
Lacking exactness, there will be little you can do to achieve and
maintain proper adjustment. While spacers are simple in their design and
duty, there is no more room for compromise here than in our other
components.
Our precision headset spacers are made to the same exacting standards as
our headsets. Each spacer is lathe-cut from high-grade aluminum bar
stock in a single operation ensuring exactness of size, concentricity,
and parallel surfaces. Many of the other headset spacers available in
the market are saw-cut from a tube resulting in variances of these
all-important tolerances. This is especially true with the now popular
carbon fiber headset spacer. Fashionable? Yes. Precision? Questionable.
In addition to sizing variances, carbon fiber has poor qualities in
compression, which is what it is subject to during adjustment and from
trail forces as the bicycle is ridden. We believe that this is an
impractical material to specify spacers to be made from when our 3mm
spacer weighs just 2.5 grams by the way.
Geezzz.
Lou
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