Re: pros use tubular tires, not clinchers.

They are all carbon clinchers? No metal hoop? Don't think so but since
I don't drink the Trek koolaide, not as 'informed' as you Mike.

100% carbon. Probably the most expensive (in terms of R&D) product they've
done, when compared to the return on investment. Took them a year longer
than planned; it's just not easy doing a clincher carbon wheel, 'cuz those
sidewalls have to be made so perfect so you avoid braking issues... plus a
lot of the weight advantages are illusory. The first wheels to test strong
enough weighed as much as aluminum rims, so what would have been the point?
Their weight target was to drop a quarter pound (from the lightest of their
aluminum ones) and have considerably greater strength. They could get the
strength, but it took forever to get the weight down. In the end, the
reduced weight is partly in the rim, partly in the hub.

The look cool, they ride great (especially sprinting), and the brakes work
very well. They're just... expensive. Really expensive. Fortunately, I don't
destroy wheels, so they should last for a while. But I sure wouldn't want to
do an urban survival run on them. Sure, they're stronger than aluminum rims,
but even a solid car rim can meet a pothole that is its undoing!

--Mike-- Chain Reaction Bicycles
www.ChainReactionBicycles.com


"Qui si parla Campagnolo" <peter@xxxxxxxxxxxx> wrote in message
news:1140531494.656152.280880@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Mike Jacoubowsky wrote:
4)with all the carbon rims, most are tubular only. To date, only 3
carbon clinchers I know of-FSA, Campagnolo and Reynolds and hoo-boy
expensive

Don't tell that to my bike; it believes it's sitting on a pair of carbon
Bontrager clinchers. It will be highly disappointed to learn otherwise.
And
yes, they are hoo-boy expensive. Hopefully they're also hoo-boy durable!


They are all carbon clinchers? No metal hoop? Don't think so but since
I don't drink the Trek koolaide, not as 'informed' as you Mike.

--Mike Jacoubowsky
Chain Reaction Bicycles
www.ChainReaction.com
Redwood City & Los Altos, CA USA

"Qui si parla Campagnolo" <peter@xxxxxxxxxxxx> wrote in message
news:1140449235.943216.241320@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

jim beam wrote:
i stood at the weigh-in of the amgen tour of california prolog today

http://www.amgentourofcalifornia.com/

and watched the first hour's worth of various sundry bikes having
their
conformity tests. [i was at the barrier and could literally touch
them,
so visibility was not a problem.] the ratio was about 20:1 in favor
of
tubs. "but, but, but" i found myself thinking, "the r.b.t. 'experts'
all swear that pros use clinchers for lower rolling resistance".

this leaves two possible conclusions:

1. r.b.t. "experts" don't know what they're talking about.
2. it was all a figment of my imagination.

wouldn't 2 be so much more comfy?

First, not all RBT guiys say clinchers are used by pros. I have always
said the majority use tubies for the following reasons(notice I will
not mention lower RR).

Tubies cuz
1)-safer-generally will not roll off when flat
2)more comfy-no need to use a bunch of PSI to prevent pinch flats
3)-corner better-hello Jobst-more supple sidewalls, no need for any
bead to hold it onto the rim, rounder.
4)with all the carbon rims, most are tubular only. To date, only 3
carbon clinchers I know of-FSA, Campagnolo and Reynolds and hoo-boy
expensive

All these guys have a squadron of support cars and people so flatting
isnobigdeal. Tubies for racing is still a better tire. IN MY
OPINION>>>>>>>
-




.

Relevant Pages

  • Re: pros use tubular tires, not clinchers.
    ... Mike Jacoubowsky wrote: ... it's just not easy doing a clincher carbon wheel, ... Sure, they're stronger than aluminum rims, ... Bontrager clinchers. ...
    (rec.bicycles.tech)
  • Re: pros use tubular tires, not clinchers.
    ... I don't drink the Trek koolaide, not as 'informed' as you Mike. ... Diamond rims? ... about the use of the word "carbon" in the bicycling context. ... If the rims are made from diamonds, ...
    (rec.bicycles.tech)
  • Re: pros use tubular tires, not clinchers.
    ... I don't drink the Trek koolaide, not as 'informed' as you Mike. ... Diamond rims? ... If the rims are made from diamonds, ... I expect the referenced rims are actually of carbon fiber reinforced ...
    (rec.bicycles.tech)
  • Re: Carbon Clincher EOY Report
    ... But I did manage to put about 1500 miles on the new wheels. ... compared to alloy rims. ... I had been using Kool Stop carbon ... The Zipp pads do produce a lotta dust which is a bit of a pain to ...
    (rec.bicycles.tech)
  • Re: Carbon Clincher EOY Report
    ... compared to alloy rims. ... rims and changed to the Zipp carbon compatible pads and braking ... I had been using Kool Stop carbon ... The Zipp pads do produce a lotta dust which is a bit of a pain to ...
    (rec.bicycles.tech)
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