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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).
Notes from a visit by a Rover Co. representative regarding engine bearing troubles and engine specifications.

Identifier  ExFiles\Box 116\1\  scan0136
Date  1st September 1937
  
Visit of Rover Co's Representative (Mr. Swain)

Mr. Swain visited the Works on the 26-8-37 to discuss the troubles they experienced with Hadl's metal bearings. From the discussion we formed the opinion that the majority of their trouble was due to insufficient lubrication at the crankpin & our recommendations are set out in our report of 30-8-37.
Further particulars of the Rover engine are set out below & in the attached prints etc.

Crankshaft: Nickel-Chrome-Molybdenum
4 Bearings
Crankpin 1.9375 dia x 1.312 wide
Journals. 2.000 dia
Front & intermediate bearings 1.437 wide
Rear 1.875 wide
Length of shaft from front bearing to rear bearing = 24.0" approx
Diameter of oil holes in crankpins & journals = .250
Brinell hardness 225 - 270
Wt of crankshaft = 62.625 lb.

Crankcase
Cast Iron
Integral casting of crankcase & cylinder block.
Length of crankcase 23.5" approx.
Main bearing supports
Front = 1.125 wide
2nd = 1.375 "
3rd = 1.375 "
Rear = 1.718 "
  
  


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