Page 2 - Combined_91_OCR
P. 2

December 4, 1969
               H. P. Bruns                                                                     Page 2





               Evaluation    o  ^4          • —  *  Q -  co  C  C D  rbird  Rivers  0)


               Since the Dodge Daytona has not previously been used on a road cours                e some
               suspension development will be required to find the optimum combinat                ion
               to use the advantages of the rear stabilizer for improved cornering                 speed   cn
               The reduced drag of the Daytona is also expected to help the lap spe               ed by
                increasing the speed on the straightaway. The Plymouth Superbird ha                s not
               been run on any race track, and this test will be a shakedown for th               e car
               and will show if any differences exist between the two types of cars                 on
               this track.

               Evaluation of Automatic Transmission

               The initial running of       the Daytona will be done with a blue stripe manual
               transmission to establ      ish a baseline for the car. Th          car will then     CT  C D
               converted to an automatic transmission, and will be run with both the
               standard    ratios (2.45, 1.    4>    Ln   .00 - Black Stripe) and the close ratios
                (1.93, 1.  29, 1.00 - Orang    C D   CO -    rt  ipe) .   These transmissions are a development
               of the au   tomatic transmissions developed for the P-69 program. These trans­
               missions will be evaluated both for  effects on lap time and driveability
               and for durability.

               Brake Testing

               The latest design      O  reinforced brake shoe will be evaluated during this
               test. Vari    ou   Grey  Rock brake linings will also be evaluated. The braking
               requirement   7 3  —  or the Daytona-Superbird are expected to be different from
               the convent   ional bod ied cars, particularly in respect to braking distribu-
               tion, since    the Daytona-Superbird will have much more vertical force of
               the rear wheels than the conventional cars. These cars will                 Iso have
               different brake cooling arrangements than have been used previously.

               Exhaust System Evaluation

               Two different diameters of primary exhaust pipe wi            11  CT   C D  compared, 2” and
               2-1/8". Two different lengths of primary pipe wil             1  c r  C D   compared. All of
               these tests will be run with the manual transmissi           on.

               Pointless Distributor

               The pointless distributor developed by the Engine Electrical Laboratory will
               be evaluated on one of the cars, both for performance and for durability.
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