Slowly getting a bit more built in between getting gear ready for the upcoming Lefroy trip.
After rolling the rims, I drill two 8mm holes and plug weld the joiner into one side, of the inside of the rim. It has to be the inside (spoke side) this allows for the tyre profile to be rolled onto it afterwards, from the outside. Hope that makes sense.
One side is flushed off after plug welding it, so that the rim can be checked with a template to make sure it's ready to be joined, nice and true but more importantly perfectly round and flat.
This is the backbone (frame) of the bike. I cut long pie shaped sections out of tube to make the end taper. I have made up the some mandrels. The mandrels are welded to lengths of smaller pipe, that slide fit full length inside the backbone tube, to allow me to tap the tube to the correct taper over the last 250mm on the 34mm diameter small frames and 300mm on the 42mm large frame tubes.
Squeeze it up with the chain vice grips. Lots of spot welds to hold it in shape, while it's peened round.
Back in the tube roller with another set of dies and roll it to shape it. Camera on my phone doesn't like the shed lights.
Slowly getting there.