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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).
Progress report on design schemes and drawings for a 3 1/4 Litre Bentley Chassis.

Identifier  ExFiles\Box 30\4\  Scan179
Date  12th May 1934
  
- 9 -

3 1/4 LITRE BENTLEY CHASSIS.

N.Sch. 3786 Layout of Front Brake Mech: .525 Cams -
14.125 Dia. Drums. .375 Liners .......... Recd. 21.2.34.
N.Sch. 3787 Layout of Rear Brake Mech: .4675 Cams -
14.125 Dia. Drums. .375 Liners .......... Recd. 21.2.34.
N.Sch. 3974 Aluminium Brake Shoes - Rear Brakes 14.125 Dia.
Drums ...................................... Recd. 15.2.34.
N.Sch. 3978 Toggle Movements - Rear Brakes .......... Recd. 15.2.34.
N.Sch. 4004 Stiffened Front Brake Shoe Mounting to suit
existing brake design (12.000 drums) ...... Recd. 6.3.34.
N.Sch. 4005 Stiffened Front Brake Shoe Mounting to suit
14.000 dia. drums ......................... Recd. 6.3.34.
N.Sch. 3979 Toggle Movements - Front Brakes .......... Recd. 17.2.34.
N.Sch. 3980 Aluminium Brake Shoes - Front Brakes 14.125 Dia. Recd. 17.2.34.
N.Sch. 4006 Cross Steering Lever to suit 1° Pivot inclin-
ation and 14.000 Dia. drums .............. Recd. 6.3.34.
These schemes are all in connection with 14.125"
dia. brake drums, but they are not being detailed
as we understand that the whole question of braking
is being reviewed.

N.Sch. 4000 Strengthened Axle Pivot with 1° inclination and
3 Bolt Bottom Flange. ..................... Recd. 1.3.34.
Detail drawings completed and issued ........ 5.5.34.
N.Sch. 4009 Brake Actuating Shaft with increased external
diameter ................................... Recd. 9.3.34.
Detail drawings completed and issued ........ 21.3.34.
N.Sch. 4011 Strengthened Brake Pedal ............... Recd. 9.3.34.
Detail drawings completed and issued ........ 15.3.34.
LeC. 3830 Buffer for Bonnet Side Plates ......... Recd. 14.3.34.
Detail drawings completed and issued ........ 12.4.34.
LeC. 3825 Crankshaft with solid Balance Weights.. Recd. 19.3.34.
Detail drawings completed and issued ........ 17.4.34.
LeC. 3840 Lubrication of Contact Breaker Cam .... Recd. 21.3.34.
Detail drawings completed and issued ........ 17.4.34.
LeC. 3865 Radiator Grille ....................... Recd. 6.4.34.
Detail drawings will be put in hand as soon as
possible.
  
  


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