[Tinsky]

We have been using Bosch Profile extrusions for our frame for a couple of years now so we came up with a small block that is keyed to the frame. We then grind flats on each end of the shaft and hold it in place with set screws.

The wheels that we use are machined aluminum, so we started pressing in needle bearings in the hubs for reduced friction and we use thrust bearings between the hubs and the shaft brackets.

The shaft itself is made out of case hardened shaft.

When all put together we have a very low friction setup for our tires that prevent binding and reduces power loss from the transmission system.