Rolls-Royce Archives
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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).
Log of component failures and issues, detailing the mileage at which they occurred for thrust races, propellor shaft dampers, and clutches.

Identifier  ExFiles\Box 107\2\  scan0226
Date  15th October 1937 guessed
  
-3-

27,685 Miles.
28,583 "
29,689 "
31,142 "
31,371 "
37,699 "

Defective Thrust Race old style
Made quiet by modifying the
Thrust type.
18 average mileage 30,000 "

Noisy after all modifications. (unit changed)
2 at 7,126 "
20,000 " approx.

Quiet after stoning pinion.
1 at 52,296 "

Propellor Shaft Dampers 4 1/4 litre.
14 at 3,444 "
4,431 "
4,865 "
6,173 "
7,927 "
8,307 "
8,620 "
9,395 "
17,893 "
20,852 "
Load of dampers increased by entry of dirt, also distortion of barrel.
3 mileage unknown.

Clutches. 4 1/4 litre.
1 slip at 13,933 "
20 judders at 1,365 "
1,383 "
3,114 "
2,948 "
3,272 "
3,216 "
4,865 "
4,354 "
5,103 "
5,771 "
5,267 "
8,998 "
8,025 "
8,904 "
8,984 "
11,381 "
12,619 "
13,322 "
18,267 "
21,236 "
The incorrect setting of the clutch operating fingers have been the chief cause.
  
  


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