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).
Road test report detailing the performance of tungsten contact points over various mileages.

Identifier  ExFiles\Box 172\3\  img101
Date  6th September 1927
  
Road Test Report

TUNGSTEN CONTACT POINTS

6.9.27

Run 10,000 miles on 8-EX. Fitted at end of run.
* 7,500 " 10-G3. Changed due to pitting and misfiring.
* 5,400 " 98-NK. Misfiring developed.
* 7,800 " 10-G3. "
* 7,950 " 5.EX. Cleaned and re-set at 7000 miles. Condition good when removed for sale of car.
* 10,750 " 9-G3. No complaint.
* 10,000 " 7-EX. "
* 13,900 " 9-EX. Cleaned and re-set at 5500 and 11,000 miles.
* 7,600 " 9-G3. Trimmed and re-set.
* 7,250 " 12-EX. Trimmed at 3350 miles. Present condition at 7250 miles very fair.

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EFC.
  
  


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