13-02-2019, 11:57 PM
Decel is 44 ft/sec squared divided by 2xdistance. The figure is then expressed as a fraction of 1G, 32 ft/sec/sec The legal requirment here reduces to .5G from low speed but an unrealistic .4G for 2 wheel brakes. Fortunately the old codgers who test old cars ignore the latter! (Applied to trucks it is all a bit of a fraud as the initial delay of the air sytems are more or less ignored! Something else to ponder when being tailgated by 50 tons in your 75% late Rubuy or better special!)
Rolling roads are misleading as all the lead effects etc get confused. And the pad type only assess very low speed.
The Tapley meters must require care. If the car is brought to a full stop the final jerk confuses them.
Has the car in question semi Girling or the simple earlier brakes?
Austin seemed very carelss with many publications. The ignition timing in early Ruby book and copied far and wide has caused enormous strife. Many of the parts diagrams are wierd ie straight cut diff pinion.
Rolling roads are misleading as all the lead effects etc get confused. And the pad type only assess very low speed.
The Tapley meters must require care. If the car is brought to a full stop the final jerk confuses them.
Has the car in question semi Girling or the simple earlier brakes?
Austin seemed very carelss with many publications. The ignition timing in early Ruby book and copied far and wide has caused enormous strife. Many of the parts diagrams are wierd ie straight cut diff pinion.