From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Instructions and specifications for battery ignition systems, including wiring and cable fixing for four and six-cylinder engines.
| Identifier | ExFiles\Box 61b\4\ scan0161 | |
| Date | 1st August 1929 | |
| PAGE 5 FIXING THE CABLES ON THE IGNITION DISTRIBUTOR AND IGNITION COIL Fig. 6, Fig. 7, Fig. 8, Fig. 9 A.{Mr Adams} HIGH TENSION CABLE 1. Strip cable ends for a distance of 16 mm (fig. 7a). 2. Push cable shoe 119 over stripped cable (fig. 7b). 3. Twist cable core into shoe (fig. 7c). 4. Force together the claws of the cable shoes so that their points penetrate the rubber covering of the cable (fig. 7d). 5. Insert the cables, thus prepared, into the openings of the distributor disc and the ignition coil (figs. 6 and 8). B. LOW TENSION CABLE on ignition distributor (fig. 6) 1. Remove distributor disc 113, lift off rotating distributor piece 112. 2. Loosen terminal screw 107f until opening 107h in contact block is exposed. 3. Strip cable for a distance of 10 mm. 4. Pass cable trough the opening marked 1 in the housing. 5. Tighten terminal screw 107f. ON IGNITION COIL: See figures 3 and 9. FIXING THE CABLES TO IGNITION DISTRIBUTORS AND IGNITION COILS OF OLDER DESIGN Fig. 10, Fig. 11 A.{Mr Adams} HIGH TENSION CABLES 1. Remove distributor disc, unscrew carbon box 14 and screws 17, then take off cable shoe 18. 2. Strip cable ends for a distance of 12 mm and turn up the strands of the bared cable core on to the rubber insulation (fig. 11b). 3. Push cable shoe 23 over cable and fix it by rivet 24 (fig. 11c). 4. Insert cable and cable shoe in openings in distributor disc and ignition coil in such a manner that the rivet heads engage in the grooves provided for that purpose. 5. Tighten up cable shoes by screws 17 (14). B. LOW TENSION CABLE on ignition distributor: as explained above. On ignition coil: needs no explanation. 23 = Cable terminal WMH 1/1 X 24 = Rivet WNJ 2/1 X - 5 - PAGE 1 BATTERY IGNITION for four and six cylinder engines consisting of: IGNITION COIL: TA 6 B 1 | TA 12 B 1 IGNITION DISTRIBUTOR: VA 4 B or VA 6 B | VA 4 B or VA 6 B USE: TA 12 B 1 + VA 4 B for engines up to 5200 r.{Sir Henry Royce} p. m.{Mr Moon / Mr Moore} of the crank-shaft TA 12 B 1 + VA 6 B for engines up to 4500 r.{Sir Henry Royce} p. m.{Mr Moon / Mr Moore} of the crank-shaft TA 6 B 1 + VA 4 B for engines up to 4000 r.{Sir Henry Royce} p. m.{Mr Moon / Mr Moore} of the crank-shaft TA 6 B 1 + VA 6 B for engines up to 3500 r.{Sir Henry Royce} p. m.{Mr Moon / Mr Moore} of the crank-shaft WATT CONSUMPTION: When measuring the output of dynamo and battery of the Lighting and Starter Set the following Watt consumption is to be taken into account: for the 6 V Battery Ignition: { VA 4 B about 9 Watts, VA 6 B about 12 Watts } at 1000 r.{Sir Henry Royce} p. m.{Mr Moon / Mr Moore} of the crank-shaft. for the 12 V Battery Ignition: { VA 4 B about 19 Watts, VA 6 B about 24 Watts } WEIGHT: Ignition Coil: 0,7 kilo. Ignition Distributor: 1,1 kilo. MODELS: 1. Ignition Coils: TA 6 B 1 for 6 Volts; TA 12 B 1 for 12 Volts. 2. Ignition Distributor: VA 4 B for 4 cylinder engines; VA 6 B for 6 cylinder engines. | For 4 cyl. engines mixed timing*) H + S | For 6 cyl. engines mixed timing*) H + S Order Numbers . . . . | VA 4 B R 600, VA 4 B R 614 | VA 6 B R 600, VA 6 B R 614 Timing Range**) . . . . | H = as desired, S = 20º | H = as desired, S = 20º *) Mixed Timing = Hand + automatic. **) Measured on the shaft of the Ignition Distributor which runs at the speed of the cam-shaft. R = clockwise. Special type for the Tropics. NOTE: If the crank-shaft of the engine when not running is in such a position that the contacts of the contact breaker are touching (i. e.{Mr Elliott - Chief Engineer} the contact breaker is closed), the battery discharges via the ignition coil, if it has been forgotten to switch off the battery ignition. To prevent this happening it is necessary to remind the driver by means of a signal to switch off the battery ignition. If the Bosch Switch-boxes HA, HS{Lord Ernest Hives - Chair}, Hg and Hk{Col. T. Harker - Sales} are used, the charging control lamp gives this signal. If Bosch Switch-box Hr 5 or HT 2 is used, a special indicator lamp JJ 2/8 must be provided. (Compare Wiring Diagram p. 6 and Drawing AML 3.) WHEN ORDERING PLEASE STATE: 1. Order. Number of Ignition Coil } see under Models. 2. Order. Number of Ignition Distributor } 3. Order. Number of Indicator Lamp JJ 2/8 if it is to be supplied. 4. Length of cables required. 5. Whether with or without stop pin 103e on distributor. 6. Which fixing screws are required for the ignition coil (see page 2, under Fitting) VTD E 8950-4 (8. 29. 500) DIN, C 5 - 1 - PAGE 6 WIRING DIAGRAMS Diagram Labels: Ignition Distributor 7352e Ignition Coil TA INDICATOR LAMP JJ 2/8 - only necessary for switch-boxes without charge-indicator lamp M = Frame K = Sparking plugs Connection labels: to terminal 15 on switch box, to terminal 61 on dynamo The Ignition Distributor and Ignition Coil must be provided with a good metallic contact with the engine frame. For other connections see Wiring Diagram of corresponding Bosch Lighting and Starter Sets. ROBERT BOSCH A.{Mr Adams}-G.{Mr Griffiths - Chief Accountant / Mr Gnapp} STUTTGART - 6 - | ||