I need the rear axle.
It is threaded on one side and has a pressed in end cap on the other.
The threaded side require a standard cone and locknut like traditional hub axles.
The freehub body is a standard Shimano.
I would machine a new one if I had the time. It wouldn't be hard. Just don't have the time to plan it all out and do it.
I plan on using an 11 speed freehub body. With a longer mountain length axle, I can shave that down a bit. The frame is 131mm and the dropouts are super thick and they are carbon. So I am using the extra length to make sure the axle is in the dropout as to not have any issues.
I did it recently on an Falcon Sports Accel disc wheel. Worked perfect. That used a standard 10x1x141mm axle. I swapped it for a 146mm one and redid the freehub and everything was perfect.
It is actually going on a back up wheel for a friend of mine. I am building up a custom carbon TT bike. The disc is his primary. The Spinergy is the backup.
I could also take and use a regular threaded axle and make a stepped adjustable nut and throw on some spacers. I can do a couple things. Just trying to avoid it.