Rim Diameter

Here is a simple question,

I am trying to figure out how wheel diameter is calculated. Is it from spoke hole to spoke hole, flat to flat between the spokes, or wheel edge to wheel edge?

I need to order spoke sets and don't want to get it wrong.

Also are all spokes created equal?

Greetings from Namibia.

Part for the rebuild got here yesterday, waiting for frame to come back from powder coat.!!!!!!!!!!!!!!

namibchris said:

I am trying to figure out how wheel diameter is calculated.

Click to expand...

Dimension [A] shown in the photo below is the rim/wheel diameter. Therefore a "19 inch" rim (for a 19 inch tyre) measures 19 inches at [A], and an 18 inch rim would be 18 inches etc..

namibchris said:

Also are all spokes created equal?

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No.

Spokes come in in single thickness, thick or thin or a necked down kind thick at the nipple but rest a step thinner for bit less mass. Then type of metal and finish varies.

Chris, where are you getting the spokes from? If it's an outfit like Central Wheel or Buchanan's and you're going with a stock setup or one of the common variations, then I don't see why you can't just tell them what bike you've got and what you need. Any of the Norton specific suppliers probably carry what you need too.

http://www.buchananspokes.net/products/ ... norton.asp

http://www.central-wheel.co.uk/index.html

Definitely learn the rear rim as 1st one and best wishes getting a rim from Bucannan that drilled as wildly as Norton steel rim, so not to put spoke in bending bind once all laced up correctly. Norton front brake rim is definitely the ultimate hard to do, test your concepts and manhood patience rim lacing lesion there is. Al nipples are for show bikes not real world ones, beware.
You can't get spokes tight enough unless the nipple strips, the spoke twists or the rim folds up. Best tedium is getting each row of spokes ringing similar maxium tension and still keep rim in tolerance... If montitored close enough you can pick up each ripple of each spoke in the rim plus manufacture variation on 100'th" & 1000'th"scale.

Take a look here wheelbuilding-102-for-dummies-t8724.html?hilit=wheelbuilding

Jean

Well I was going to buy a set of spokes from Buchanan and I have determined that I have stock 19" wheels......

I'm not doing the spoking though having it done by some speciality guys in the capital.

Thanks for the help........


Chris

Make sure to tell them if it's a drum or disk front brake. They are not the same.

Also measure offset from centerline of rim to some reference point like the edge of the hub before disassembly. Some places will just center the rim on the hub centerline. If the shop is doing everything then hopefully they know this already and will get it right. Take detailed photos of spoke pattern beforehand.

If you are getting the stainless spokes from Buchanan's they should come with some sort of assembly lube for the threads - at least they did 30 years ago.

batrider said:

Also measure offset from centerline of rim to some reference point like the edge of the hub before disassembly. Some places will just center the rim on the hub centerline. If the shop is doing everything then hopefully they know this already and will get it right. Take detailed photos of spoke pattern beforehand.

If you are getting the stainless spokes from Buchanan's they should come with some sort of assembly lube for the threads - at least they did 30 years ago.

Click to expand...

OOPS, Will FM Dead, I just had one of my guys take the small angle grinder to the wheels in order to get them to the capital for powder coat.......