Not my project actually

but I'll find out what freewheel was salvaged ...
And surely a candidate for strangest bike race ever was the Bordeaux-Paris (last run in 1985). It started at 3AM and covered 570K's in one day! The last half or so was motor-paced behind small motorbikes. Each rider had 2 motorbikes, one taking over as the other re-fueled. I think the race was limited to around 20-25 riders.