Cosmic Pro Carbon v Speed 40C v Attack - choice?

Everything about building wheels, glueing tubs, etc.
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BedsGorilla
Posts: 2
Joined: Fri Apr 20, 2018 11:06 am

by BedsGorilla

Hi All. Looking for some wheel purchasing advice;

Weight - Lighter the better. Replacing Dura ace C24 (1420g), don’t really want to go heavier if I can help it.

Braking surface - must be black, must be ok for mountain descents (I’m 70kg so not too taxing, happy with carbon if proven) and ok in the wet

Rim width - 25mm absolute max - has to fit a 2014 Cannonade Evo which is very tight on rear clearance.

Cost - not primary driver but obviously less is better.

Narrowed the choice down to:

Mavic Cosmic Pro Carbon - 1490g (claimed!!) - £1400 - braking said to be excellent, solid, semi-aero
Fulcrum Speed 40C - 1420g - lighter, semi-aero
Reynolds Attack - 1365g - £850 - lightest, not aero, about to be replaced?

Any opinions on these? Any obvious options I’ve missed?

Cheers.

Marin
Posts: 2662
Joined: Wed Jan 22, 2014 11:48 am
Location: Vienna Austria

by Marin

Clincher?

by Weenie


pdlpsher1
Posts: 1413
Joined: Thu Jul 19, 2012 6:09 pm
Location: CO

by pdlpsher1

Hands down the Speed 40. The best hubs and absolutely tested to be the safest carbon clinchers. The Reynolds were tested for braking heat and failed in the test. They are the cheapest for a reason. I would stay away from any Reynolds carbon clinchers.


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BedsGorilla
Posts: 2
Joined: Fri Apr 20, 2018 11:06 am

by BedsGorilla

Yep has to be clincher.

Regarding the Reynolds - I've got a set of Assaults from 2008 which have survived a couple of descents of Mont Ventoux without drama so I wonder if they are that bad. But agree probably the least good of the three from a braking perspective.

Guevarca
Posts: 4
Joined: Sun Dec 17, 2017 8:49 am

by Guevarca

Another vote for Fulcrums as I recently had the same thoughts but actually went for the cheaper Quattro Carbons with finances tight after a bike theft. Speed 40s were my preference but went for some 2018 Quattros instead as cheaper but still had the new Ac3 braking surface to improve braking a bit more

pdlpsher1
Posts: 1413
Joined: Thu Jul 19, 2012 6:09 pm
Location: CO

by pdlpsher1

Regarding Reynolds and heat tests see the attached (see the text under smokin resin). I have a local friend who destroyed a recently produced set riding the local steep hills on a hot summer day. Luckily he wasn’t seriously injured. When contacted Reynolds refused to warranty the wheels.

The Quattros are good wheels if you don’t mind a bit more friction in the bearings and a bit more variation in actual weight. The Speed 40 is in the same class as the Campy Bora 35s. Identical sublime bearings but with a slight weight penalty (25g).

Image



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by Weenie


NiFTY
Posts: 1066
Joined: Sat May 26, 2012 11:26 pm

by NiFTY

Can you post the rest of that article or a link to it. The quattro and 40C are different wheelsets with different hubs.

I would vote for the 40C from that collection. I would also recommend xentis - braking is excellent and cool.
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