We had a C11g in maroon and a C12 swinging arm in black . Mother had a C11 with a sidecar for 10 years and I never saw father put a spanner on it but he did tie up a broken spoke in the back wheel with a bit of welding wire, unfortunately he left the twisted end sticking out and my foot got dragged into the back wheel, always panelled in sidecar outfit back wheels after that.