Page 16 - Vauxhall 20-60 H.P. (R Type) Chassis Shop Manual
P. 16

VAUXHALL 20-60 SHOP MANUAL

          CHASSIS SPECIFICATION





          ( BEFORE CHASSIS NO. R3060 )

          Early 75 mm bore engine

          AXLE, FRONT A nickel steel drop forging of I section centre beam and round section end
          beams, specially designed to resist front wheel braking stresses.

          AXLE, REAR Semi-floating construction carried in a one piece banjo type housing of
          pressed steel on the ends of which the spring saddles are pressed and riveted in position.
          Spiral bevel drive; crown wheel and pinion of case hardened nickel steel. Ratio for open and
          coupe cars 4-5 to 1. For closed cars 473 to 1. Ball and roller bearings throughout.

          Road Speeds in M.P.H. at 1,000 R.P.M.
                                     Top         3rd        2nd          1st        Reverse
                                                                          .
                                                  .
            Axle  Ratio 10/45         20        13 5          9          5 85           7
                                                                                        .
                                                                          .
                                       .
                                                  .
                                                              .
            Axle  Ratio 11/52        19 3       12 6         8 4         5 45          6 5
          BRAKE, HAND Operates on transmission.  Right hand brake ever.
          BRAKES, FOUR WHEEL  Vauxhall designed mechanically operated type. Each brake is
          operated by a separate cable coupled to a central brake compensating mechanism.
          CAMSHAFT A case hardened steel stamping, integrally. Ground finish. Shaft runs in
          three bearings of the following dimensions:–
                                    Diameter           Length               Material
                                      .
                                                          .
            Front Bearing             1 622”             1 9”           Phosphor Bronze
                                                          .
            Centre Bearing              2”               1 7”           Phosphor Bronze
                                                          .
                                      .
            Rear Bearing             1 9335”             1 5”           Phosphor Bronze
          CRANKSHAFT  Nine bearings, 40 ton carbon high tensile steel drop forging. Drilled
          throughout to establish oil communication between main and big end bearings. Main
          bearings are of gun metal lined with white metal.

                                              .
          Dimensions of Crankpins, Diameter: 2 115”; Length: 1.375”
            Dimensions of Main Bearings:–
                               1              2               3              4           5
                               .
                                                                                         .
                                                              .
                                              .
                                                                             .
            Diameter          2 5”           2 5”            2 5”           2 5”        2 5”
                                                            .
                                                                                        .
                                                                           .
                              .
                                             .
            Width            1 86”          1 085”          1 085”         1 165”      1 165”
                               6              7               8              9
                                                              .
                               .
                                                                             .
                                              .
            Diameter          2 5”           2 5”            2 5”           2 5”
                                                                           .
                                                            .
                              .
                                             .
            Width            1 085”         1 085”          1 085”        1 085”

          CARBURETTOR Claudel Hobson, butterfly throttle type, with power jet operated by a

          cam fitted on the end of the throttle spindle. Vertical air cleaner fitted to carburettor intake
          pipe.
          CLUTCH  Enclosed dry single friction plate type, without clutch stop.
          COOLING SYSTEM  Impeller circulation and fan, driven by endless belt from pulley on
          end of camshaft. Capacity 3 gallons ( 14 litres approx. ).
          Page  12.
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