Lightweight Disc Hubs

Sorry if this has been asked previously but previous searches didn't really help.

I'm planning on building a lightweight CX wheelset which will mostly be used on the road. I plan to use Sapim CX-Rays and Stans Iron cross rims but am not sure what hubs would be best. I'm looking for lightweight but not quite Chris king money. I weigh 60kg and was hoping for 24h front, 28h rear.

Novatec init.

NOVATEC D611SB HUB
Item Number D611SB , CONFIGURATION: 24H w/o QR

NOVATEC D712SB HUB
Item Number D712SB , SPECIFICATIONS: 28H w/o QR

Iron Cross is a bad idea for the road though. Better of with Crests, in which case get some OTP 29er Hope Hoops.

dont go iron cross if you plan to do anything besides cross with the tyres. They won't take high pressure even with tubes.

some better options:

disc only alpha 340 or crests, h+son archetype / tb14, that new velocity 25mm tubeless (but check the max pressure first, dunno is it ok to go road on this).

My girlfriend has Alpha 340s and I like them a lot so I'll probably go for them. I'll have a wee look at the Novatecs. They sound like they should do the trick.

Novatec D 711/712 SB are the best light disc hubs at an affordable price. If you source them from the Far east (Ebay) they come with better left hand caps, less draggy than those you find in the UK. There is a guy on Ebay, called Ian something, he takes 3 weeks to deliver them to your door, but they are extremely good for the money, but only 32 H.
If you want 28 you can get them at BDOP cycling, one week delivery but more expensive. 24 is not a good spoke count for disc brakes, I wouldn't bother.
Mine are built on Stans 340 full black (the new ones) and come pretty light

Very nice. Any idea of the weight for the wheels?

24 is not a good spoke count for disc brakes, I wouldn't bother.

Interesting. Do you have a source for that, or is it opinion? I race on 24h front, 2X, but then I weigh 60kg...

The Alphas do look nice.

My Stans ICs / Novas / Sapims weigh naff all in tubeless guise.

1,550g from memory.

Just my opinion... I would not build them... it's not about your weight... disc wheels need to be a bit over engineered to compensate for the extra stress of hub braking. 24 might do, but it's a bit borderline... on the other hand I am quite conservative...

As someone asked, I think mine are around 1.65 Kg

Mine are 28h, but then I'm significantly fatter than Howard.

The guy who's building them is a mechanic pal who builds ~300 wheelsets a year. I'll run the 24h idea by him and if he's unsure I'll go for 28h.

I'd imagine the availability of 24h front disc hubs is some kind of indicator as to whether its a viable disc spoke count.

Weight is a factor - the stress applied to the system under braking will be some function of the rider's kinetic energy. But I'd defer to Tester should he show up and give a real explanation.

Obviously just don't build them radially ;)

ZIpp among others are offering 24 H disc wheels, but their track record of reliable builds is a bit flaky... they do build with as little as they can get away with, sometimes too little... they build for racing, not for riding
http://paolocoppo.drupalgardens.com/content/zipp-188-hub-and-firecrest-rebuild-now-finished

This:

I'd imagine the availability of 24h front disc hubs is some kind of indicator as to whether its a viable disc spoke count.

FWIW my relatively long ACI spokes were ~6g each.

6 X 4 = 24

If it were me, for the sake of 24g I'd er on the side of caution. If weight was the primary consideration you wouldn't have started with discs.

If you are going to side with caution, why not go 32? Or 36?

How do we know the extra four spokes is enough?

Somebody think of the children

wanders off the burn the 24h F&R Mavic MTB wheels from 2003

Howard can you put on one of these and hurl yourself down a mountain please?

(On the bike, if that wasn't clear)

What's that skip?

Shimano did that? Strewth, and how many spokes do their disc road wheels have?

^^^ Yep that's a fair point and I probably would go for 32h as it should be strong enough and hubs are plentiful.

But you've got to pick that balancing point. Personally I'd also base it on the overall price. If the overall wheelset is cheap it doesn't matter too much.

Howard can you put on one of these and hurl yourself down a mountain please?

(On the bike, if that wasn't clear)

I'd love to - you'd have to drive me to the top though, I can't pedal.

Galibier pls

I expect my fancypants weight weeney rotors would explode before my spokes gave out though

that new velocity 25mm tubeless (but check the max pressure first, dunno is it ok to go road on this).

Aileron... is it available in the UK yet?

Mental note to call BLB in the morning...