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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).
Test results for F.76548 springs used in S.S.+ rear shock dampers.

Identifier  ExFiles\Box 16\4\  Scan101
Date  1st June 1929 guessed
  
SHOCK DAMPERS - S.S.+ REAR.

F.76548 springs used on both H.P. and L.P. valves.
Test A.{Mr Adams} H.P. spring compressed to 1.000"
L.P. " " " 1.150"

Test B. H.P. " " " 1.150"
L.P. " " " 1.000"

| Spring No. | TEST A.{Mr Adams} | Low press: lbs. | TEST B. | Low press: lbs. |
|---|---|---|---|---|
| | High press: lbs. (Set up .250 | | High press: lbs. | |
| 1 | 76 | 33 | 28 | 83 |
| 2 | 81 | 34 | 28 | 84 |
| 3 | 78 | 33 | 26 | 80 |
| 4 | 80 | 33 | 28 | 82 |
| 5 | 80 | 35 | 28 | 83 |
| 6 | 75 | 32 | 25 | 80 |
| 7 | 76 | 33 | 28 | 81 |
| 8 | 76 | 34 | 29 | 84 |
| 9 | 78 | 34 | 32 | 85 |
| 10 | 76 | 33 | 29 | 82 |
  
  


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