Tag / wheels
Performance Sportster – Wheels
Billet aluminium wheel blanks from USA. R19x3.00 for the front and R18x5.5 for the rear. Planned 100mm tyre in the front and 180mm tyre in the rear. The CNC machining center is too small to process the blank in one go, so it has to be done in parts.
Performance Sportster – Wheels hubs
Hubs have been designed to match OEM Harley-Davidson Sportster hubs dimensions. The widths between the bearings are the same. The bearing housings are the same. The brake rotors and the pulley bolts patterns are the same. This means that all the hubs are a little bit different, none of them are the same. CNC machined…
Performance Sportster – Revising components design
It turned out that there is no need for a custom front axle as OEM Kawasaki ZX-6R front axle is the same diameter as Harley-Davidson Sportster. I have not been happy with prototype wheel spacers. Neither appearance, nor manufacturing process. So they have been updated to make them visually more appealing. The same goes for…
Performance Sportster – Front Brakes
Harley-Davidson Sportster XL1200N front hub had only one brake disc. However, the hub itself is symmetrical. So, I had to drill and tap mounting holes for second brake rotor. And now we have a twin brake disc setup.
Performance Sportster – Front wheel
Next step for the project – mounting front wheel. Custom front wheel axle has been made from 304 stainless steel. Very simple and lightweight wheel spacers have been turned from aluminium. Inside diameter of wheel bearings is 25mm, but inside diameter of fork bottoms is 32mm. So a bushing and a nut for axle have…