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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).
List of ground clearance measurements for the 'Spectre' model under full load conditions.

Identifier  ExFiles\Box 4\1\  01-page103
Date  5th September 1934
  
14694
To HS{Lord Ernest Hives - Chair}/Rs.{Sir Henry Royce's Secretary}
HS{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}4/KW.5.9.34.

SPECTRECodename for Phantom III.

Ground clearance taken with 5 normal passengers, full tank of petrol etc. and the front axle jacked to give normal full load buffer clearance - 2.8".

Under front axle, lowest point 7.5"
" crankcase 7.3"
" front steering arm 7.2"
" Battery box 7.0"
" Rear silencer, rear point 6.9"
" " " front 6.5"
" Front silencer 6.6"
" Rear crossmember prop. shaft 6.5"

Rear buffer clearance under the above loaded conditions, 5 passengers, N.S. 3.1" O.S. 3.3"

HS{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}
  
  


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