Join Date: Jul 2006
Location: Columbus, OH
Bikes: '08 Surly Cross-Check, 2011 Redline Conquest Pro, 2012 Spesh FSR Comp EVO, 2015 Trek Domane 6.2 disc
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Deep V's and DT240's are pretty easy to find anywhere. The Sapim CX-Ray spokes, maybe not so much... but they are a QBP item so your LBS should be able to order them.
My thoughts on the Sapim CX-Ray:
- 274g per 64 count.
- Polyax (?) alloy nipples
- 2.0mm end profiles
- $50 - $60 per 20
Well, I'm not a big fan of alloy spoke nipples; but if you're building a 32h rim you can leave a little lower tension than if you were building a 24/20 set, so the chance of stripping one out or pulling one through is less likely. Still, for the minisule weight difference you may want to consider standard brass nipples. Moving on, the profile on the Sapim CX-Ray is identical to a couple other manufacturer's aero-blade spokes. 2.0 head/thread with a 0.9 bladed center section. I'm not sure what Sapim's metallurgic process is that they claim more strength than any other spoke on the market (direct from their website), but it sure sounds good for marketing.
They're expensive, but most ultralight bladed spokes are. They're not out of the routine price range for comparable items.
At 32h front/rear, I wouldn't be worried about any of the issues that plague low count bladed wheels, like differential cross patterns and drive-side weakness at the spoke heads. (I'm assuming you're going with a 3 cross lacing in the rear.)
I think it sounds like you'll end up with a really kick-butt pair of light, strong wheels with the setup you've chosen.
If your shop can't get Sapim spokes, consider DT Swiss Aerolites. Approximately the same price, and identical profile.