Brompton Cheesywheel

So I didn't get on with the printable roller for Brompton bikes that was on here already, the o-ring kept falling off all the time as the groove for it wasn't deep enough, they cracked easily because the edge of the wheel was a thin flange, so I made these things. A really chunky 65mm wheel.

I am using 55mm ID 65mm OD 5mm O rings with these. Most of the ring is inside the wheel, this is so they don't get pulled out when sliding the wheel sideways as you turn corners on linoleum supermarket floors in shopping trolley mode. Please note that I designed the wheels to be slightly loose on the spacer, and slightly narrower than the spacer so they roll easily even when the bolt is tightened up all the way.

I may make one with a bearing later on but I'm going to test these ones for a few months to see what happens before I make any future versions.