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Old January 15th 10, 06:10 PM posted to rec.bicycles.tech
AMuzi
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Posts: 13,447
Default Tire Making, episode four

Chalo wrote:
thirty-six wrote:
DougC wrote:
No offense, but where does it say that carbon black aids in wet
traction? I haven't seen that mentioned anywhere so far.

Religious tenet introduced to 'explain' why patterned tread tyres grip
better in wet corners with smooth surfaces. Fillers had to be used
because raw latex was and is expensive,


drugs

fillers also not only reduce
cost but stabilise the rubber product against stability problems due
to temperature fluctuations. With heat, the latex will crumb and not
provide the dry traction required, or economical wear rate.


Huh? If plain latex had any advantage whatsoever over filled rubber,
track racers or time trialists would use plain latex tires. But they
don't.

Iron oxide seems to boost traction more than carbon black does; why else
would Kool Stop be using iron oxide in their brake pads, and not carbon
black instead?

Because they want the blocks to crumb easily so as to provide steady
revenue from replacements.


Have you used red Kool Stop or Scott Mathauser pads? Because in my
observation, they last longer in both miles and years than black
pads.

Chalo


I do not have any special knowledge but Clement classic #1
and #2 pista tubs were offered in white latex tread on open
silk casings. Sold and performed well when they were
available to us.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971
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