Small update. I wanted to do a couple of things - lots of the time with this, I have to leave with a problem still unsolved. I kind of have the thought about how I'll solve it, but not sure if it will work until I try. One example is how I am going to transfer drive to the wheels. In a normal go-kart that you'd buy, the axle has a keyway cut in it. A sort of square-ish channel. There's another cut in the wheel hub, and then when you go to assemble it all, you line up the two keyways and push a piece of rectangular bar called a key into the hole. This means that the axle and wheel will turn together.
If I had a mill, or a broaching machine, I could probably make the keyways, but I don't, so my plan is to drill and tap through the wheelhub and into the axle, and screw in a high-tensile steel machine screw into it. I'd done this, and got to the stage where I was about to screw in the screws, when I realised an error - I'd made the holes fractionally to close to each other and the screws interfered with each other. I was wondering if I could turn the screwheads down just enough for them to miss each other, and, luckily, I could!
Just a few odds and ends to address. Need to dress the welds holding the wheelbolts on and trim them to length.
I've also carried on with the other wheelhub. I had to weld up the hole I'd made down the middle because I need to have a flat surface for marking out the wheel bolt holes. So I welded it up and faced off the weld in the lathe. Then I did a bit of schoolboy geometry and marked out and drilled the holes.
Next I needed to drill a 30mm hole down the middle to match the axle:
Bit of a test fit.
And then weld on the wheel bolts and mock up:
If I had a mill, or a broaching machine, I could probably make the keyways, but I don't, so my plan is to drill and tap through the wheelhub and into the axle, and screw in a high-tensile steel machine screw into it. I'd done this, and got to the stage where I was about to screw in the screws, when I realised an error - I'd made the holes fractionally to close to each other and the screws interfered with each other. I was wondering if I could turn the screwheads down just enough for them to miss each other, and, luckily, I could!
Just a few odds and ends to address. Need to dress the welds holding the wheelbolts on and trim them to length.
I've also carried on with the other wheelhub. I had to weld up the hole I'd made down the middle because I need to have a flat surface for marking out the wheel bolt holes. So I welded it up and faced off the weld in the lathe. Then I did a bit of schoolboy geometry and marked out and drilled the holes.
Next I needed to drill a 30mm hole down the middle to match the axle:
Starting with a very small drill bit, and then moving up to the final size hole which is cut with a reamer.
And then weld on the wheel bolts and mock up:
I need to go through the same process with the drilling and tapping on this side too, and then that's the wheels done. All 4 of them!
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