Home built fabrication, Schwinn frame, powerplants are two backpack leafblower engines. It still pedals, the gas tank is two old canteens melded together, the exhausts are from two old pewter style teapots, with lids that flutter when the engine runs. Front wheel is from two racing wheelchair wheels melded together. Rear wheel is Schwinn 'big tire' original wheel. Front brake is the original Schwinn caliper brake. Rear foot brake is linked to a friction wheel in the drive train. The rear fender is from an industrial fan grill. One of the tensioners is from an old ratchet, another is an old skateboard wheel. The rest of the contraption is cobbled together from old tools and kitchen utensils. I don't know if Mustie1 is on this site, but if he isn't he should be:
Detail of fabricated front wheel (or wheels):
https://www.youtube.com/c/mustie1
בס'ד