Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
By coincidence, I'm putting a new rim on the front of the orangutang (550F1) - one of those awful DID jobs from DS with that side script, so I have just plated the spokes and nipples. Checking the 550 spokes they are as near as damn it 4BA - but not right. BA is a threadform usually used on brass electrical fittings and had a metric based pitch - no idea why. So I have no idea what this thread is exactly - British Standard bottle top, lawn mower and chastity belt thread as my old metalwork teacher called any thread he couldn't identify.IanI've put the horrid side script on the left of the bike on both wheels, so at least it's not as visible when on the side stand!