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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).
Study on the variation of steering torque based on tire type and pressure.

Identifier  ExFiles\Box 29\1\  Scan125
Date  10th October 1925 guessed
  
ETUDE SUR LE 8 DAY
Variation du Couple de Braquage suivant le type de pneu et la{L. A. Archer} pression (Volant de Cm.50)

Voiture de | Charge | Câblé | Confort | OBSERVATIONS
: Charge : AV | Dimensions : Pression : Effort | Dimensions : Pression : Effort
---
_ture | | | | |
Hispano | 1.032 | 895/135 | 3 | 25 K | 905/135 | 2 K | 30 K |
Daim | 1.176 | 895/135 | (6 (5 | 50 45 | 905/135 | (3 (4 | 60 48 |
| 1.472 | 895/135 | (6.5 (5 | 83 67 | 920/125 | (2.5 (4 | 90 68 |
27 17 | 1.435 | 895/140 | 3.5 | 45 | 905/135 | 2.5 | 45 |
27 17 | 954 | 820/120 | (6 (5 | 30 25 | 830/130 | (1.5 (3 | 35 32 | roulements lisses
27 17 | | 820/120 | (6 (5 | 28 23 | 830/130 | (1.5 (3 | 32 24 | roulements à rouleaux
N.W Expl. | 1.030 | 820/120 | (6 (5 | 31 27 | 880/130 | (1.5 (3 | 37 31 |
N.W 19 | 854 | | | | 820/120 | (0.750 (1.500 (3. | 42 30 23 | sans freins AV
| 728 | | | | 775/145 | (0.875 (1.750 (3.500 | 40 30 24 | -1°-
N.W 5 Flt | 770 | 765/105 | (1 (3 (5 | 50 35 28 | 775/145 | (0.750 (1.500 (2.500 | 54 45 30 | avec freins AV
P.W 7 Open | 618 | 765/105 | (1.250 (2.500 (5. | 33 26 18 | 730/130 | (0.750 (1.500 (3. | 37 25 19 | sans freins av.
| 498 | | | | 730/130 | (0.625 (1.250 (2.500 | 31 24 18 | -1°-
......
  
  


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