TJ wins on discs

Especially for light weight issues concerning cyclocross / touring bikes & parts.

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Illuminate
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by Illuminate

Limba wrote:Some companies don't even make any 26" mtn.bikes anymore! You have to buy a 29"er..


Yeah, oh what an advancement forward that has been.
-Increased weight (tyre + wheel)
-Decreased lateral strength of the wheel (trig 101)
-Increased COG on the bike

Anything to sell bikes to gullible riders (and yes, I've ridden both).

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maddog 2
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by maddog 2

My own bike with the new shimano ultegra di2


what wheels are you running OCCP?

OCCP
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by OCCP

maddog 2 wrote:
My own bike with the new shimano ultegra di2


what wheels are you running OCCP?



Novatec light hubs with revo spokes and mavic reflex rims. Tires are Tufo Flexus Primus.

periodcorrect
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by periodcorrect

Its going to happen weather you like it or not! They make sense and are worth the extra weight

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the_marsbar
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by the_marsbar

Illuminate wrote:
Limba wrote:Some companies don't even make any 26" mtn.bikes anymore! You have to buy a 29"er..


Yeah, oh what an advancement forward that has been.
-Increased weight (tyre + wheel)
-Decreased lateral strength of the wheel (trig 101)
-Increased COG on the bike

Anything to sell bikes to gullible riders (and yes, I've ridden both).


Only focusing on the negatives, eh :) What about things like increased stability and better traction?

By the way, saying "increased center of gravity" doesn't make sense. You can move the center of gravity because it's a position. You can't increase it.

JK
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by JK

the_marsbar wrote:
Only focusing on the negatives, eh :) What about things like increased stability and better traction?

By the way, saying "increased center of gravity" doesn't make sense. You can move the center of gravity because it's a position. You can't increase it.


So he probably means 'higher COG', which is false too. The rider is in the same position, just a bit lower relative to the wheel axles.

By the way, how did this discussion end up in a CX topic about TJ's discs??

Dammit
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by Dammit

These are now available, and I will be getting a pair ASAP: http://www.hopetech.com/page.aspx?itemID=SPG343

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kaniuts
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by kaniuts

" The fact is that 99.9% of top riders all around the world are not using them.
Before adding 2-300gr on the wheels and maybe something around 500gr on the whole bike for nothing, they think twice"

Is nobody considering the lower rotating mass on disc wheels that do not have to be thicker to support cantilever brakes? In the end racers will choose from what their sponsors want to sell, and from this, what makes them faster.

With more and improving disc brake choices vs. decreasing number and stagnant development of cantilever brakes it is clear to which way CX will go.

K

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euan
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by euan

Thing is those lower rotating mass rims don't exist yet, and until there is a wider adoption manufactures are unlikely to risk the money on a die or mould for a wheel that will be pretty niche.
"Step forward the climber and all those who worship at the altar of lightness" - R. Millar

Dammit
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by Dammit

What about disc only 29er rims?

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euan
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by euan

Enve's road rims are lighter than their 29er rims. Pretty much the same everywhere
"Step forward the climber and all those who worship at the altar of lightness" - R. Millar

jooo
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by jooo

@euan - Only the 25mm option weighs less and I imagine many people would shy away from it for CX use (although the newer rims are beefed up compared to the older 24mm and 25mm rims). The ENVE XC tubular on the other hand weighs less than all their other road rims.

elmar schrauth
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by elmar schrauth

it tokk 5 years to see v-brakes on pros bikes
it took 5 years to see alloy frames, carbon
it took years to see cliplesspedalks on pros bikes.
..........................
i love my disc, especially when mud, wet or snow. a little more space for fenders.
it easy to buil a sub 7 kilobike with disc

JBV
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by JBV

elmar schrauth wrote:i love my disc, especially when mud, wet or snow. a little more space for fenders.


FTW!

Ghost234
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by Ghost234

I think until discs are allowed for road, you may not see too many manufacturers switch to discs. Many customers for cross want a bike that they can dual purpose cross and road race/crit (if necessary). If a manufacturers full line up is in discs, they exclude this group - at least for now.

I can see cyclocross going mostly full discs sometime in the near future, but for now Canti's will be fine.

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