Building an Offroad Fixed Gear on the Cheap

I've just used a front wheel with a disk mount as a rear today in my latest project. Went together well with a little cold setting of the rear triangles. Even made my own fixed gear by modifying a sprocket off an an old casette. Seems to be OK so far.

Nice one. Did you just keep the same axle then? That's surely quite a big difference is it not?

Looking at the Shimano front disc hubs, I'm pretty sure you could just replace the axle with a solid, rear one and be set to go.