Long awaited Dura Ace 9000 C24 wheels - first look and feel

Discuss light weight issues concerning road bikes & parts.
qeaou
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by qeaou

plpete wrote:Anywho.... back to the topic... :thumbup: I own and ride the previous version of the C24 wheels (7900) and as far as the rim width goes here is what I noticed. They were definitely wider than my previous standard 19mm wide clinchers at just about 22mm in width, but not 23mm. I wonder if the new 9000 version of the wheels is exactly 23mm. Makes me want to pull the tire from the front wheel and remeasure.


Nope, no change. Spot on 22mm (according ty my measurements)

Unfortunately don't have a precise enough scale to weigh the skewers,
(damn it, every cyclist should have a digital scale to weigh skewers and other stuff... what's wrong with me LOL)

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ultimobici
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by ultimobici

sawyer wrote:
qeaou wrote:That's only fair.
These wheels are not the top shelf.
I should have re-phrased the main thread to,
best allrounders in the $1000 category.

Unless someone knows better ones in that mark?

Also, I am curious,
what kind of wheels you have in mind, lighter stiffer, more area etc?
examples ?

cheers


For example Boras.

Lighter - yes about 140g lighter than C24s
Stiffer - yes
More aero - yes
Better handling - yes, they are tubs
Safer - yes, they are tubs.

Marginally tougher hubs IME also.

Are you seriously comparing a £2000 pair of wheels to a pair less than half the price? FFS!! Like comparing a Ferrari 458 to a VW Golf R32. Both are quick but one ain't all that hot on the school run or for nipping to Tescos!

by Weenie


timzcat
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by timzcat

Best thing to do is just ignore him and he'll go away.

What is different about the skewers? I have both 7850 and 7900 C24 wheels. The 7850 came with silver skewers and the 7900 came with black skewers. They are not really any lighter.

7850 to 7900 the hubs are different. The front and rear both have a noticably larger body diameter.
Red nipples on 7850 and black on 7900.
7900 wheels were marginally heavier then the 7850 wheels.
7900 wheel 632F 815R = 1447g
7850 wheel 613F 821R =1434g

As far as width, measured at the brake track they are 20 to 21 mm wide (outside measure)

petal666
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by petal666

See if this link works. New skewers

Image
Image

timzcat
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by timzcat

Oh wow they are different, :shock:

Doubt they are any lighter unless the handles are hollow,

qeaou
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by qeaou

First road test - impressive so far.
(Nothing epic, chum creek (cat 3) climb but gentle+Melba descent to test - outside of Melbourne, VIC)

Sturdy feel, good handling, no scary crack or creak noises even on accidental pot holes.
Handle bad country roads well,
Good on the climbs, seem to have good power transfer, relatively low weight of rear wheel (for the price category) helps, especially if you are not a mountain goat... (like in my case)
solid feel on descents with cornering, might have had better areo from a deeper dish,
but a handles side wind well instead (this was a pain with 50mm carbons)

This is just the first test, so we'll see how they last,
(the brand new wheels come with fancy bags, but no spare spokes, that is either a bad thing, or a good thing, who knows) - i've had new sets come with 5 spare spokes, this made we wonder... and of course they started braking and eventually the hub broke - will not mention the brand, I am not about bad-mouthing anything or anyone)

petromyzon
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by petromyzon

I was under the impression that these were going to be offset drilled rear rims whilst the others were all going triplet. Definitely same rims?

timzcat
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by timzcat

Spare spokes? That would concern me.

I have two sets and never a problem. The 7850s have at least 5000 miles on them and the hubs are smooth as can be and have never been touched.
Spoke tension are pretty much dead on with a tension meter right out of the box.

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PSM
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by PSM

Aren't Boras Campy and Dura-Ace Shimano ? Or did I miss something ?

petal666
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by petal666

You can put a shimano freehub on boras.

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ultimobici
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by ultimobici

petal666 wrote:You can put a shimano freehub on boras.

Herecy!

petal666
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by petal666

If they are so good, why not?

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PSM
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by PSM

You may put a Ferrari engine in a Porsche.

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Valy
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by Valy

internets... never a dull moment :mrgreen:

_______________________________________

I've had an interest in these C24 wheels from Shimano though. Has anyone had direct comparison 7950/7900 to the 9000?


and those new skewers look shit hot!

qeaou
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Joined: Sat Sep 01, 2012 8:32 am

by qeaou

you don't need to quote the above post!

Unfortunately never had the pleasure to ride the 7900 series, shame.
Got the 9000 after a series of recommendations of DA C24 as the best allrounders in this price category,
I wish there was someone adding to this thread who actually tested both.
I do have a distinct impression that rolling resistance is much lower than previous few sets of wheels.

(additional 50km test riding on a route I did 20+ times, I was able to beat most sections,
same conditions, same form, same weather etc and not really pushing it too hard... so I guess this is a promising)

I absolutely love the skewers for firm and easy dismantling of front wheel,
I still have not weighed them - I hope that someone online will)

by Weenie


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