Ciao, can someone can help me to find some tech_data of a B31S plunger 1951? info as max speed, whellbase, total height etcc... . Thanks a lot in advance Devis

email (option): vadori@libero.it

Hi Devis..Seat hieght 29" (approx), wheelbase 52.5", Dry weight 325lbs. (approx, this is the weight for a rigid model, the plunger is a little heavier...probably around 340lbs.), Bore and stroke 71mmx88mm, compression ratio 6.5-1, Power..17bhp @ 5500rpm.
Contact breaker gap .012" fully open,Spark plug gap .018"..grade Champion L82C. Inlet and exhaust tappet clearance .003" (set cold).
Sprockets.. Engine 17Tooth,.. Clutch 43T,.. Gearbox 19T,.. Rear wheel 42T.
Tyre sizes front and rear 3.25x19..rim sizes WM2. Brake diameters 7" front and rear.
Top speed of a sound example will be about 70-75mph.Cruising speed about 55mph and fuel consumption in the 70-80mpg. range, this also dependent on the condition of the bike and how it is ridden..hope that helps. I have a rigid B33 I have owned for 32 years...a great bike..Ian

Thanks a lot my friend, really appreciate. Devis