Step 1: Free Steel
Step 2: Straighten the Tubing
I do not want to cut the tubing to length, yet.
Step 3: Fit the Axle Holes
Step 4: Make Brackets
Step 5: Position the Axle and Mark
Step 6: Bare Metal Needed for Welding
Step 7: Weld
Step 8: Bracket Modification
Step 9: Tack Weld Washers
Step 10: Attach Wheels
Step 11: Sliding the Wheels Into Place and Using
Step 12: Storage
Spray paint the brackets and any marred areas with gloss black acrylic spray paint. Mask anything that should not be painted.
To use, attach the NordicTrack to the axle set as described in step 11. Grab the upper part of the NordicTrack with one hand and pull downward so the back end of the Ski Machine rises and wheel it to its new location. This works very well when moving to another room on the same level. It does not work so well on steps, but could if the axle set were locked to the NordicTrack rather than just resting on the axle set.
When the back end of the NordicTrack rises, the wooden skis will slide forward off of the front of the machine. It is possible to remove them before moving the machine. It would be possible to run a short bungee cord from the axle up and over the top of the "U"-shaped frame piece and back to hook again on the axle. One would be needed for each side and could be directly in front of each ski. That would hold the axle set more firmly to the NordicTrack so stairs could likely be negotiated.
Or, try this. I bought a spring for a screen door and cut two pieces from it about 3 3/4 inches long. I bent the cut ends to make loops for attaching hooks. I made two hooks for the tubular axle and two larger hooks for the NordicTrack frame. I place the springs so they are in front of the ski ends. These work very well to keep the axle and the skis in place while moving the NordicTrack. Also, I found I can collapse the entire NordicTrack and then pick it up from the rear end. That gives it a much shorter turning radius for going around corners, etc. I may even be able to store it upright in a closet.
Note: I posted a topic in the forums on rebuilding the clutch drive rollers when they begin to slip. Click on this link. I have also posted an Instructable on several other adaptations I made to our NordicTrack ski machine, including how to store it vertically in a closet.