S p e c s: VS51T

1958 - 1961
engine: single cylinder, air cooled 2-stroke
barrel: 2 transfer ports
induction: piston ported
bore: 57 mm
stroke: 57 mm
cubic capacity: 145.6 cc
bhp at rpm: 8 @ 7000
compression ratio: 7.1: 1
transmission: 4 speed constant mesh
primary drive: 22/67
1st gear: 14.72: 1
2nd gear: 10.28: 1
3rd gear: 7.61: 1
4th gear: 5.84: 1
clutch: wet - multiplate
lubrication: 6%
carburetor: Dell'Orto UB 23 S3 I
main jet: 103*
needle position: 3*
mixer: 2.60
slow running jet: 50
ignition: contact breaker & coil
ignition timing: 27 degrees BTDC*
breaker gap: 0.4 mm
voltage: 6 volt
max stator output: 6v - 35w
wheels: 10"
wheel hubs: cast w/cooling fins
tires: 3.50 x 10
tire pressure (front): 16 psi
tire pressure (rear solo): 20 psi
tire pressure (rear w/passenger): 32 psi
max speed: 63 mph
 
GS150 LINKS:
 
 

*Engine Note: After engine # VS5M*0071120* the compression ratio was raised to 7.2:1 and the main jet was changed to a 105. Ignition timing was changed from 31 degrees BTDC to 27 BTDC. Lastly the needle position was changed to 2 - The reason is because of a re-designd head. Cylinder head part #26100 was used prior to VS5M*0071120* and cylinder head part #58022 was used after resulting in the change in compression.

*Tail light Note: The VBA tail light was used on the early VS5T. After frame number VS5T*087590 the rear light was changed to the GS160 type.