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).
The substitution of taper bolts and pins with parallel ones in gearboxes for all cars to simplify assembly and reduce cost.

Identifier  ExFiles\Box 136\4\  scan0216
Date  20th April 1938
  
To By & Rm.{William Robotham - Chief Engineer}...From RHC.{R. H. Coverley - Production Engineer}
1153
RHC.{R. H. Coverley - Production Engineer}1/MC.20.4.38.
F.J. HARDY
F.H.
Your Comments please
GEAR BOXES - ALL CARS
Taper bolts and pins - In order to eliminate unsatisfactory hand reaming for taper bolts and pins, securing cones to gears - suggest the following list of taper bolts and pins be substituted for parallel bolts and pins to simplify assembly and reduce cost.
GW. 876 Taper Pin 2nd Speed Outer cone.
GW.1631 Taper Pin 1st Motion Shaft.
G.85349 Taper Pin 3rd Speed Gear.
G.54713 Taper Pin 2nd Speed Gear.
G.57270 Taper Pin 1st Motion Shaft.
RHC.{R. H. Coverley - Production Engineer}
  
  


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