Wheelbuilding / Wheel Building / Wheel build help

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hippy

Need new rear wheel for the ultra bike. Currently thinking of blowing my wad on:
DT Swiss 240S hub 12mm TA
HED Belgium Plus 32h
CXRaysalways

Alternatives: (using another 350 hub to save some coin)
Kinlin XR31T rim (very similar to HED but slightly skinnier, 19mm vs 21mm)
DTSwiss 511db (same as my front wheel, deeper, 18mm internal compared to 21 for HED)

Anything else I should consider that's as wide as HED and decent?

EDIT: JRA don't do HED Belgium any more but they do have a Lark rim that looks wide as:
http://www.justridingalong.com/jra-wheels/jra-road-wheels/jra-lark-road-wheelset.html

EDIT EDIT: hmm they have braking surface, wonder if they do non-braking surface version.

EDIT EDIT EDIT:
The JRA disc rim is the MAP not the Lark:
http://www.justridingalong.com/jra-wheels/jra-map-road-disk-wheels.html
JRA Map rims: 24,28 or 32 hole front and rear. Width 19mm internal, 24mm external, depth 25mm.

Ooh, there's a DTSwiss 521 for disc brakes that's wider than the 511db (20mm vs. 18mm internal)

https://www.chainreactioncycles.com/dt-swiss-rr-521-disc-brake-20mm-road-rim/rp-prod168804

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Simba in reply to @hippy

What are you aiming for with the wheel? Speed, strength or lightweight?
Current suggestions seems a bit all over the place tbh, as all those spokes negate the aero benefit of bladed spokes.
Since it’s a rear and disc, I would personally consider a deep carbon rim (50-60mm), fewer regular spokes and the 350hub.
But that’s just me :)

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hippy in reply to @Simba

They might seem all over the place but I know what I don't want.
For example, low spoke counts are stupid for an ultra wheel, especially one under a 90kg rider.

What I do want is durability, serviceability and any speed benefits be they from lightweight or aero properties is a bonus.

I use CXRays in all my wheels, that's not really an aero thing, it's an 'I like CXRays' thing.

As for lots of spokes negating bladed spoke aero benefits, it's the opposite. I require 32h for durability so reducing the aero penalty by making them all bladed is no bad thing.

If you knew the trouble I've had with deep carbon rims and valve extenders you'd know why I'm not bothering with another one and staying shallow.

Wider rims are better because comfort during ultra races is more important than rear wheel aerodynamics and bigger volume tyres help in that regard.

I use a 350 now. Choosing a 240S instead of a 350 was simply me being a bit bling for a change. Typically I shoot for bang for buck within my specific parameters but sometimes I choose to splash out.

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