Jhieminga,
Were the Vanguards Tynes fitted with electric starter motors or did it have air turbine starters,
Running the risk of drifting the thread, I'll bet the Vanguard, like all big turboprops almost never needed brakes on landing - pull those props back into fully fine or even reverse pitch and they STOPPED!
Same in flight too (not reverse though!) high speed until very close in, back to idle, props would go into fine pitch and off came the speed.
Happy days.