S p e c s: J50 Special

1970 - 1971
amount produced: 13,599
engine: single cylinder, air cooled 2-stroke
induction: piston ported
bore: 38 mm
stroke: 44 mm
cubic capacity: 49.8 cc
compression ratio: 7.5: 1
bhp at rpm: 1.48 @ 4500
transmission: 3 speed
lubrication: 2%
carburetor: Dell'Orto SHA 18/12
choke:18mm
main jet: 62
starter jet:??
pilot jet: 40
ignition: contact breaker & points
ignition timing: 21 degrees BTDC
breaker gap: 0.35-0.45 mm
voltage: 6 volt
wheels: 10"
tires: 3.00 x 10
max speed: 25 mph
total dry weight: 176 lbs
Thanks to Jonas Snoeck for the images