Shimano show off 1,100g carbon tubular wheelset, plus the successor to the popular RS80

RS10 and RS30 get replaced too, and there's an entry level 700c disc wheel.

by Dave Atkinson   March 1, 2013  

Hot on the heels of Shimnano's new entry-level groupset, Claris, comes a slew of new road wheels too, including a new Dura Ace ultralight carbon tubular wheel weighing a claimed 1,100g.

Let's do that first. The C-24 tubular is designed to be as light as possible, for professional racers looking to gain an advantage on a mountain stage for example, although obviously us mere mortals will have to make do with fitting them to knock a few seconds off our Dragon Ride time… The UCI rules state that any wheel that a team races on has to be commercially avaialable, so it's in the line-up mostly for that reason. Shimano were fairly up front in saying that the last incarnation of the C24 tubular didn't exactly fly off the shelves, but the weight weenies will certainly be perking their ears up.

It features Shimano's OptBal 2:1 spoke ratio at the back, a similar approach to some that which other manufacturers use to even out the tension in the spokes across the asymmetric rear wheel. The rear is a 21-spoke design (14 on the drive side and 7 on the non-drive), with two-cross lacing on the drive side and radial opposite that; the two flanges are different designs so that both can use straight-pull spokes. The front wheel is a 16-spoke radial design. In the hub there's an oversize alloy axle and angular contact bearings which are easy to adjust using Shimano's tool-free Digital Adjust system.

Shimano's RS80 wheels have been very popular wheels over the last few years, and they're due to be replace with the RS81 range. Complementing the 24mm and 50mm rim depths in the RS80 is a new 35mm profile, which looks like it'll be a good all-rounder. There's plenty of good stuff trickling down from the top-end wheels too. RS81s get the D2 aerodynamic profile and OptBal 2:1 spoke lacing from Dura Ace, as well as tool-free adjustment and angular contact bearings. The RS81 range is all 11-speed compatible.

The RS30 and RS10 wheels have also run their course, and they will be replaced by – can you guess? That's right, RS31 and RS11. The main change is that the wheels have been made 11-speed compatible, which means that there's 11-speed wheels available all the way from the entry level RS11 to to the top-of-the-pile Dura Ace tubs. The RS31s and RS11s are both available in silver and black in five different colours of graphic – orange, red, green, blue and dark blue – so we'd expect to see them speeced as OEM wheels on quite a few bikes for 2014.

There's a new entry-level 700c disc wheel coming, too: the RX05. It's 135mm rear spacing, which seems to be the accepted standard now, and a 10-speed hub with a Center-Lock disc mount. They're built with 28 spokes to be nice and strong, so they're aimed at urban hybrids and disc tourers more than disc-equipped road bikes. Not that anyone's going to be making road discs or anything.

7 user comments

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I genuinely thought when I read 'disc wheel' that Shimano where releasing a aero, solid disc wheel for TT! Douhh!

posted by boardmanrider [67 posts]
1st March 2013 - 14:59

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"Not that anyone's going to be making road discs or anything"

So when is the hydraulic road disc brakes embargo over?

Wink

posted by euanlindsay [77 posts]
1st March 2013 - 15:49

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Err.

My 2013 RS10's are 11 spd compatible.

Go figure.

Sir Velo

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posted by Raleigh [1728 posts]
1st March 2013 - 18:32

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boardmanrider wrote:
I genuinely thought when I read 'disc wheel' that Shimano where releasing a aero, solid disc wheel for TT! Douhh!

You aren't the only one, I was nearly starting saving for that Tongue

posted by pdows47 [103 posts]
1st March 2013 - 20:10

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What's the weight for RS81? Pleeeeeez say you have it?

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posted by koko56 [319 posts]
1st March 2013 - 22:47

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RS80's about 1400-1500g, so I'd guess the aim with the 81s would be to improve the aerodynamics without adding weight? At a guess.

posted by bashthebox [639 posts]
3rd March 2013 - 0:39

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The RS11's come with a 1.85mm spacer (adapter) for use with 10 speed CS typically the Tiagra 4600 series. However the Ultegra CS-6700 and 105 Cs-5700 series 10 speed cassettes come with their own 1mm low spacer whereas the Tiagra does not. Does anyone know if you need to use one or the other or both to run the Ultegra or the 105 cassette on these 10/11 speed compatible wheels. If you know the answer please post. I have tried all combinations 1mm,1.85mm and 2.85mm and all fit I guess it's just a question on the chain line ?..... At Wits End

Also I have noticed that the rear wheel profile is offset sloping steep on the opposite side to the freehub. This makes the innertube hole even though central look a bit wrong as it allows the inner tube threads to show at first I thought that this was a drilling error but on closer inspection the hole is dead center so it must be just the way they are made... Wink

RS11_10spd_Spacer_1.85mm.JPG RS11_rimhole_innertube.JPG

posted by OwenD [1 posts]
19th February 2014 - 20:32

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