1949 Jack & Heintz Twin Motorbike kit is installed on a Schwinn MP97 bicycle.
Schwinn designed the MP97 specifically for the Jack & Heintz and Marman Twin motorbike kit.
-Twin cylinders - smoother
power -Rated 3 1/4 HP - 30% more powerful than any other American - made bicycle motor -Extra-large tank - includes
utility compartment - provides knee support -Average 100 miles per gallon -Auto-type clutch -Twist-grip controls -Compression release - easy starting, faster stopping -Eisemann magneto -Permanent air cleaner -Center-flow
carburator -Die cast motor mount -No oil level to watch -Only 5 moving motor parts -Cool, safe idling -Protected from road dirt -Manufactured by Jack & Heintz Precision Industries, INC. Cleveland, Ohio