I sent this along to Fred, our resident wheels expert. I also took the attached photos. Good Luck!

Hi Jonas:

The wheels sleds we use here at the USLA are a good design and work very well, however they do require a few tools to make them. The brackets we use are 2”x2” L shaped  ¼” aluminum. There is no bending of the bracket necessary so that keeps that easy.

The only critical measurement is drilling to holes for the axles bolts. They should be drilled so that all the wheels touch the ground. This means that when drilling, you will need to adjust for the curve of the bow in the fiberglass runner. I would suggest drilling the runner bolt holes in the bracket first and then attach the aluminum bracket to the kufen. This way the bracket will take the shape of the bow. Then you can draw a straight line down the length of the bracket on which you will drill 7 holes for the axle bolts. This way, all axles will be the same level when on the sled and the therefore all wheels on the ground.

If you can use any kind of inline skate wheels but if you are going to do any wheel training also, a larger diameter and harder durometer works better.

For the runner bolts you can use any kind of bolt really and lock washers and for the axle bolts. For the runner bolts, a 5/16” hardened steel of about

1 ¾” inches length works well. The best thing to do is thread them right into the bracket, but you can also insert them through the bracket and then use a lock nut to secure them (this might require a slightly longer bolt, maybe 2”).

Hoe this helps.

Fred Zimny