999 999s Front Wheel

Little ducati logo is on the right side.

 

It doesn’t matter which way round they go, it’s not like the 5 spokes that have a spoke orientation.

 

Yes

 

its not an arrow, it's a ducati logo. just a foundry mark probably to denote which manufacturer the wheel was for out of the many Y spoke wheels they made during that era for different manufacturers.

 

Ducati Performance version.



On this, yes, right hand side.

 

looking at that image, unless the bearing pockets are assymetrical and have different depths across the hub, there's no point in having a direction as the spokes are symmetrical in their design.

 

The webbing of the spokes is external on the left and internal on the right. They don't otherwise mirror each other, so maybe to equalise their respective weights? If I was at the garage I'd look at the bike, because otherwise I still don't see that it would matter which way round they are. Unlike with the tyres.

Where does the speedo drive come from?

(Notwithstanding forgetting about the exhaust stubs, this is what all the plastic does. It would have been unthinkable not to know where everything was on a Meriden Triumph. Notwithstanding forgetting about the exhaust stubs).

 

it's the pockets for the bearings. They're deeper on the rhs. Just checked my spare wheels. The webs alternate on the spokes but still have a left / right pattern that means you could flip the wheel all things notwithstanding, otherwise you'd have a balance issue.

 

The difference in depth is intentional Paul.
remember that your axle is also the (floating) spacer, whereas on the lhs you have a ring to act as a spacer.
measure from the disc mounting faces to the bearing race as the disc mounting faces are hard points and the surface is a controlled distance symmetrically about centreline.