krantz

Hello, I have a delta trike that I am trying to play around with a little. I would like to have hubs with a 5 bolt pattern (4.5in) so I can put various standard car rims on it. It is a 15mm axle and holds what looks to be a pretty common hollow trike hub. Am I going to need to manufacture my own hubs or is there another type of vehicle, (ATV, go kart, rocket sled...) that has something to convert a 15mm axle to 5 bolts? If there is nothing that would work perfectly, what would be the two cheapest/easiest hubs to weld together?

velomoover

I dont really think there is an easy way to do it without a lathe.

Perhaps you can cut two discs and sammich them together with lug nuts bolts.
Print off a mask or stencil and drills the holes exactly in the center, so the axle has something to go through and wont be off-center.

John Hood

How do the current hubs attach to the axle?

The automotive hubs I've worked with in the past were relatively cheap, (around $20), and were basically a round disc about 1/2" thick with 5 wheel studs sticking out around the edge. Near the middle the hubs were more like 1.5" thick and had a splined hole about 1" in diameter running through them.

It seems to me that it would be a very easy process with a lathe to turn an aluminum bar down to where it would be an extremely tight friction fit inside the wheel hub and then bore a 15mm hole down the center. It's literally the kind of thing you can do in 10 minutes without any machining skills at all. You would need a lathe though.