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).
Test report for a Bleriot A.T. Speedometer.

Identifier  ExFiles\Box 50\4\  Scan164
Date  30th January 1928
  
†4308
30.1.28.

BLERIOT A.T. SPEEDOMETER.

Instrument No. B.39 - 675 - 16-52, tested 30.1.28, was found to read 55.2 m.p.h. at 604 r.p.m. at 17ºC. Instrument was then put on chassis 15-EX for a 10,000 mile test.

Correct - 52.5
5.1% fast.

54.8 at 600
m.p.h. r.p.m
Normal tyre figure 52.6

EFC. {E. Fowler Clarke - Electrical Engineer}

B.39
  
  


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