After a long weekend of lathe work (not really) here are my new offroad skates.
Rails, spacers and washers for boots - aluminum
Wheel hubs - chromoly
semi hard boots - old pair of rollerblades

Let me know if you want more details on this project.

They look great! I got sidetracked with another project (custom mountainboard) so my skates are still in parts.

What size are the rails and where did you get them?

The rails are aluminum (6061) 1 1/4 x 3/8 x 28''
I got these at a local metal shop http://www.industrialmetalsales.com/688.html
but you can get them at any metal supplier.

Here are some details of the rest of the parts:

Thanks for posting the link Cornel - nice job!