Wheel building for polo

XC is usually somewhere between 22mm and 26mm (outside) which is about right if you're running 1.3"-2" tyres.
I've got a Halo SAS which is 36mm, it's pretty comedy but I've not bent it and the spokes are still nicely tensioned.

I don't know how a different width rim affects a tyre. It would be nice to find out. I'm guessing a different tyre with a stiffer carcass would react differently to something like a Kojac

I also have the Halo SAS, is over kill... with a D521/EX721 it will be ok, and it will be lighter

the D521 are great, great rim, (even better than the newer 721??) but the bad thing is you can not find any new any more.

second hand ones, are tricky, if the rim has been bent in one spot, they will always tent to bend again for the same spot, so no so kind in a second hand dated wheel

You're right, if a rim is bent, you'll never make it straight and strong, but 521 wheels come up quite often on ebay, and small buckles aren't a problem. Even new rims are often out by 20-50mm.

surely you mean 0.2-0.5mm

Nope. I often build new wheels, and out of the box rims, of high standard (Open Pro, Stans, etc) are usually 20-50mm out before I apply tension.

I think it's normal.

If you have a wheel, tensioned, ridden for a while, then buckled, which has a 20-50mm buckle, it's fucked. IMO. You can straighten it, but it won't stay straight.

If you're going with my hubs then rims are fine too if you have discs, halo freedoms, mid weight and mid strength. Come up to visit and I'll make then for you too.

Ignore drunk predictive text pls.

If you're going with my hubs then rims are fine too if you have discs, halo freedoms, mid weight and mid strength. Come up to visit and I'll make then for you too.

woo, might take you up on that, if I'm up soon

I was thinking custom build wheels, aiming for lightweight over strength tbh, then a pair of DT Swiss 420sl popped up on ebay and won em for much less than custom wheels I was considering. spokes break - replace em, rim buckles - true it. Plus most of my spoke losses are just snapped and snapped nipples, butted spokes can take more 'flex' without snapping and if you're 36h wheels then you could run with lower tensions while still having a strong wheel.

Moar tension!

@Rincewind I'm running a DT 440 disc rim on the rear, what hubs are you lacing them to? I found trials shops and trials-riding ebayers a good source of light 135-spaced singlespeed hubs.

@Rincewind I'm running a DT 440 disc rim on the rear, what hubs are you lacing them to? I found trials shops and trials-riding ebayers a good source of light 135-spaced singlespeed hubs.

they're a wheelset, going to leave them as is.

Oh! Fair enough :-)