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Specification sheet detailing the features and dimensions of G.A. high-tension waterproof magnetos.


Identifier  ExFiles\Box 4\5\  05-page100
Date  15th May 1909 guessed
  
SPECIAL FEATURES of the G. {Mr Griffiths - Chief Accountant / Mr Gnapp} A. {Mr Adams}
High tension Waterproof Magnetos

Design.
Silent running.
Ease of maintenance.
Maximum efficiency.
Ease of dismantling & repair.
Rotation both ways.

All types of G. {Mr Griffiths - Chief Accountant / Mr Gnapp} A. {Mr Adams} Magnetos are fitted with:
(a) an indicator showing, at any moment, the next cylinder to fire.
(b) an automatic timing device.

N. B. — The attention of manufacturers is drawn to the fact that by a simple adjustment the armature of any of the G. {Mr Griffiths - Chief Accountant / Mr Gnapp} A. {Mr Adams} Magnetos may be made to revolve in either a clockwise or an anticlockwise direction.

Description of the different Types of our waterproof magnetos for single cylinder engines G. {Mr Griffiths - Chief Accountant / Mr Gnapp} A. {Mr Adams}

They may be driven either at crankshaft speed (thus missing one spark at exhaust and rendering starting of engine easier) or at 1/2 the speed of crankshaft.

The type G S 1 driven at engine speed is suitable for 4 H. {Arthur M. Hanbury - Head Complaints} P.
" G R 1 " " " " 6 H. {Arthur M. Hanbury - Head Complaints} P.
" H S 1 " " " " 9 H. {Arthur M. Hanbury - Head Complaints} P.
" H R 1 " " " " 12 H. {Arthur M. Hanbury - Head Complaints} P.

Should the magnetos be driven at 1/2 speed of engine, type G R 1 should be used for 4 H. {Arthur M. Hanbury - Head Complaints} P. and H S 1 for 6 H. {Arthur M. Hanbury - Head Complaints} P. and H R 1 for 9 H P.

MEASUREMENTS IN MILLIMETERS

[Technical Drawings of Magneto]

Text near drawings:
Right angle wheel stand for types HS {Lord Ernest Hives - Chair} and HR.
Round adjust. wheel stand for types GS and HS. {Lord Ernest Hives - Chair} Right angle or round adjust. wheel stand for types GR {George Ratcliffe} and HR.
Entr'axe des vis de fixations de 10 m {Mr Moon / Mr Moore} /m
Largeur totale

TABLE 1:
Types | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O
GS1 | 134 | 127 | 15 | 24 | 7 | 43,5 | 85 | 7 | 35,5 | 93,5 | 63 | 29,5 | 12 | 167,5
GR {George Ratcliffe} 1 | 143 | 136 | 15 | 24 | 7 | 43,5 | 85 | 7 | 35,5 | 58 | 20 | 24 | 12 | 175,5
HS {Lord Ernest Hives - Chair} 1 | 153 | 146,5 | 15 | 24 | 7 | 50 | 64 | 67 | 7 | 35,5 | 26,5 | 85 | 35 | 15,5 | 193,5
HR1 | 175 | 148 | 15 | 24 | 7 | 50 | 64 | 67 | 7 | 35,5 | 26,5 | 85 | 35 | 15,5 | 193,5

TABLE 2:
Types | P | Q | R | S | T | U | V | W | X | Y | Z | a | b | c | d
GS1 | 55,5 | 75 | 27 | 38 | 96 | 15 | 14 | 185,5 | 56 | 42 | 32,5 | 12 | 15 | 43,5
GR {George Ratcliffe} 1 | 55,5 | 77 | 29 | 38 | 105 | 15 | 14 | 193,5 | 56 | 55 | 32,5 | 12 | 15 | 43,5
HS {Lord Ernest Hives - Chair} 1 | 55 | 55,5 | 80 | 82 | 45 | 108 | 15 | 14 | 211,5 | 56 | 55 | 30,5 | 12 | 15 | 61,5
HR1 | 55 | 55,5 | 80 | 84 | 35 | 128 | 15 | 18 | 221,5 | 56 | 55 | 30,5 | 12 | 15 | 61,5

Footer Text:
G. {Mr Griffiths - Chief Accountant / Mr Gnapp} A. {Mr Adams} Magnetos :: Electric lighting :: JARNAC Carburetters :: Arecal :: Refrigerators :: Foot warmer :: Pumps :: Sheet-iron.
  
  
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).


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