You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
I'm just about to build a set of Wheels for my combined Road/Cross bike; this will be mostly used on road, but with a little bit of touring and occasional CX.
So, for disc hubs laced to carbon rims, what's the general consensus? I was going to go for 24F and 28R laced 2X, but generally have no idea.
I'm 6' and 74kg and have only ever broken a chain in 10 years of riding, so ride quite light.
Why not just buy some Kinesis Crosslights and be done with it? Light & vfm £240
They are good VFM and I am tempted, but I think I can get down to around 1300g by going down the custom route which will offset the weight difference inherent with using hydros.
I've gone 24 - 28 on my Archetype road build (hopefully delivered from spokesman.co.uk today) - he recommended not going lighter even on road (although I'm 8Kg heavier than you) though I was prepared to err on the side of light vs strong as I've never really knackered a road wheel - but the disk pull has an effect I believe. If you're mixing it up surface wise I'd stick 24 28 (I have Crosslights for offroad)
Daffy - 1300 would be nice, but what price does that come out at?
*cough* £600 with Chris King R45 disc hubs
I have some 24 spoke straight pull Hope Pro 3 disc hubs I was thinking of getting rebuilt for my cross bike.
JRA reckoned they would be OK but wanted to use straight gauge spokes for strength.
The Stans Iron Cross wheelset Stans were selling was 24/28 and that is obviously cross targeted.
Touring? I'd go for higher spoke counts myself, the 6gm saved per spoke isn't worth it.
cynic-al - Member
Touring? I'd go for higher spoke counts myself, the 6gm saved per spoke isn't worth it.
...but Shirley a stiffer rim reduces the requirements for high numbers of spokes?
It might, I wouldn't risk it for 24 gm or whatever per wheel.
On my Kinesis CX disc wheelset, when I have a mudguard fitted so you have something to visually line up against, you can see the front rim deflect 2-3mm to the left under heavy breaking.
At first I thought this was the hub in the fork or something in the fork leg flexing. It's not though.
It's the disc slowing the hub and adding extra tension to the braking side spokes. This has the effect of 'dishing' the wheel over the extra distance. It used to disconcert me. Now after 1000's of miles I'm not that bothered.
I think 28 spokes is a sensible number for a front disc wheel if you are even close to heavy (>70kg). The lateral stiffness on a 24 spoke wheel would be worse. I would be tempted to go for straight gauge spokes to improve lateral stiffness if I went for a 24 spoke disc front.
It is the fork twisting.
How could the brake tension all the spokes on the disc side - half of them will be compressed, half tensioned (immaterialy)