Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Blueprint drawings and specifications for front and rear leaf spring suspension systems.

Identifier  ExFiles\Box 178\1\  img197
Date  28th August 1926
  
- 24 -
same results be obtained by a series of helical springs. At the moment the helical spring appears to offer the greater commercial possibilities.

VI: SOME DETAILS OF THE R-R SUSPENSION SYSTEMS.

(a) Spring dimensions.

BLUEPRINT DATA:

Top Left: 20 HP FRONT ROAD SPRING - F.53583
- Clearance (Full Load): 1.950 + .300 / -.300
- Buffer to Spring Clips.
- Dimensions: 18.000, 20.000
- Unloaded Camber: 2.500
- Loaded Camber: .500 (POS.)
- Width of Spring Plates: 1.750
- Rating (600 LBS Spring): 300 LBS. PER 1"

Top Right: 20 HP REAR ROAD SPRING - F.53169
- Clearance Buffer to Axle BKT. (Full Load): 3.650 + .375 / -.375
- Dimensions: 28.000, 28.000
- Unloaded Camber: 5.125
- Loaded Camber: NIL. (SPRING FLAT)
- Width of Spring Plates: 2.250
- Rating (900 LBS. SPRING): 175 LBS. PER 1"

Bottom Left: 40/50 HP FRONT ROAD SPRING - F.71975
- Clearance Buffer to Spring Clips. (Full Load): 1.750 + .250 / -.250
- Dimensions: 21.000, 22.500
- Unloaded Camber: 2.600
- Loaded Camber: .500 (NEG)
- Width of Spring Plates: 2.000
- Rating (1100 LBS. SPRING): 355 LBS. PER 1"

Bottom Right: 40/50 HP REAR ROAD SPRING - F.10612
- Buffer to Axle Clearance. (Full Load): 4.150 + .500 / -.500
- Dimensions: 8.925, 26.500, 26.500
- Unloaded Camber: 2.500
- Loaded Camber: 1.500 (NEG)
- Width of Spring Plates: 2.500
- Rating (2000 LBS. SPRING): 125 LBS. PER 1"
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙