B44 similar to C15 with stronger internals and modern chassis. Some quirk of capacity, bore and stroke made this sweeter than its ancestry suggested. Poorly rebuilt examples are dogged by reliability hassles. Known as the Victor, then as the Shooting Star (with good TLS front drum). B50SS Gold Star had leg-breaking, self-destruct engine that’s best avoided unless it’s updated with CCM bits. Good B44 mills are smooth(ish).
1965-73 441/499cc OHV single 30/34hp 95mph 100/70mpg 290/320lbs