His "Behemoth" bike had such low gearing for hill-climbing that, as I recall it, the bike had two retractable small wheels, one on each side, that worked like t

His "Behemoth" bike had such low gearing for hill-climbing that, as I recall it, the bike had two retractable small wheels, one on each side, that worked like training-wheels to stabilize the bike at very low speeds.