To; jumpinjan,
If you examine the Wolseley crankshaft you will notice the addition of the eight counterweights for the balancing of the Primary Shake. Also you can go to the two places I listed plus Charles Fayette Taylor’s Volume # 2 of,“The Internal Combustion Engine in Theory and Practice”, at the bottom of page # 399 it will give you the reason that Wolseley did what they did in 1917. It is my personal believe that they were just one step away from the development of the 90 degree V-8 crankshaft. However we will never know. Fortunately World War-1 ended about a year later.
Also you will find that on page 232 of the book by Alec Lumsden the Viper and Adder engines had balanced crankshafts but not the Secondary Horizontal Shake Damper used on the 1930-1931 American car engine the Oakland and also used on the Pontiac V-8 for just one year 1932 which was the same company just a change in names.
M.L. Anderson
