Originally Posted by
El Cid
I never even thought to look at the quality and material of my old spokes. If they turn out to be generic, low-grade crap, then I'll replace them.
For those keeping score, I have a Surly Krampus with 50mm Rabbit Hole rims. I've decided to replace the SRAM hub with a Shutter Precision PD-8. Since I've never done this, I looked at specs for my wheel and hub. The Surly website says that my rim is compatible with 32 hole hubs. The SRAM hub has a QR...something or other, and a 100mm o.l.d. I don't even know what those numbers mean, but they appear to be the same on both hubs.
So the spokes are going to come out of the wheel and then go back in. Well, ideally. If I mess it all up I might end up back at the bike shop anyway.
You are replacing a low flange hub (I'm guessing) with a high flange hub. Probably the required spoke length will be different. If you can, get a copy of Jobst Brandt's book, look over the section about spoke length, and then download a calculator (spocalc.xls implements the same formulas) and experiment with the numbers to see. Or look over Sheldon Brown's info to figure out what the measurements mean and then play with the calculator. You will probably find that the new, high flange hub, needs shorter spokes.
In short, you probably need new spokes, but check it out to make sure.