Step 3Platform and Axle
I suppose there are a lot of materials that can be used for the bottom of the cart, they just need to let sand and water through and be lightweight.
The axle is just a length of steel bar I got from the hardware store. Mine is actually a little smaller in diameter than the holes in my tire hubs, but I correct that some year. A little wobble doesn't affect the performance.
I just drilled holes in the side rails of the frame and slid the axle through. Note how the intermediate support also keeps gear off of the axle. Was that planned? I don't remember. But it works.
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