Such engineering magnificence! Chairs - with wheels - and fine mounts attached! This sort of thing is stratospherically beyond my meagre abilities. I was hoping to bodge something up out of a bit of pvc piping and various bits of wood. I do have a old pushbike I can use for parts - assuming I can get the frame apart; maybe I can somehow turn the axle assemblies into a mount, if I can find some way to lock them into place...
We did once also have an old wheelchair (not motorized though), which belonged to my late mother-in-law. But that's long gone.
I rather like the idea of a job which looks cheap, cheerful and plain junky, but still works really well.
I'll have fiddle this weekend.
Thanks, folks!
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