I have a RD205 AC rear hub and Kinlin XR270 28 hole which I am going to get built here in the UK using CX-Ray spokes.

Trouble is I believe 2x is best build for these hubs (correct me if I am wrong) and am having diffuclty sorting out spoke length.

Sapim site seems to offer a longer spoke as it asks for thickness of teh rim where spoke passes through. Other spoke calculators do not ask this.

Does anyone know which is best spoke calculator to use or spoke length?

Thanks,

Matty

That spoke circle diameter will be fine for a 2x build.

Regarding spoke lengths, how many mm of difference are you seeing between the calculators? I generally find spocalc to be good. Have you tried the DT Swiss calc?

That spoke circle diameter will be fine for a 2x build.

Regarding spoke lengths, how many mm of difference are you seeing between the calculators? I generally find spocalc to be good. Have you tried the DT Swiss calc?

If you're getting it built let the builder sort out the spoke length.

DT's spoke calculator lets you use the rim and hub measurements, if they're not in their database (which is extensive).

AC 205 hubs have very narrow flange spacing which makes for a weak wheel.

+1 A competent builder can find the numbers easily, and then the burden is on him/her if they come out wrong.


If by "weak", you mean they will flex laterally a little more, correct. If you mean longevity, the spacing actually balances out the spoke tension a tad. Either way, I can't detect any difference on mine.


Here's another good spoke calculator, if you need one. I usually use this as well as Spocalc, then run a third (used to use Dan Halem, now DT) if the first two don't agree.
https://lenni.info/edd/

My wheelbuilder who I used to true my existing wheels cannot source sapim spokes so I will have to do myself and supply him with the spokes. Or I will take elsewhere at this rate.

Whether he sources the spokes or not, he should still be able to calculate the length for you.

Talk to Psimet. He knows what spoke lengths to use without asking idiots like us and I bet he's significantly cheaper. Probably take you a decent amount longer to get them though.