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Gear box ratios
Model
Touring
...
...
...
Competition (Rigid)
Competition (Spring)
Gear ratios, Touring (Rigid and Spring Frame) and Spring Frame Competition
Engine sprocket size
15 teeth
...
...
(c) 16 teeth
...
...
17 teach
...
...
...
...
(a) 18 teeth
19 teeth
...
...
...
...
20 teeth
(b)
...
...
21 teeth
(a) Standard (or 350 c.c. Touring Models and 500 c.c. Spring Frame Competition Models.
(b) Standard for 500 c.c. Touring Models.
(c) Standard for 350 c.c. Spring Frame Competition Models.
Gear ratios, Competition Rigid Frame Models
Engine sprocket size
...
...
15 teeth
...
...
(a) 16 teeth
...
...
17 teeth
(b)
...
...
18 teeth
...
...
19 teeth
20 teeth
...
...
21 teeth
...
...
(a) Standard for 350 c.c. Models.
(b) Standard for 500 c.c. Models.
Ignition (magneto)
Model
Make
Lucas
Touring 350 c.c.
Touring 500 c.c.
Lucas
Lucas
All Competition
Lighting (bulbs)
Location.
...
Head lamp (Pre-focus)
...
...
Pilot lamps
...
...
...
Rear lamp
Speedometer
...
...
First gear
Second gear
...
2·65 to 1
1·70 to1
...
3·199 to 1
2·437 to 1
...
1·70 t o 1
2·65 to 1
First gear
...
18·55 to 1
...
17·32 to 1
...
16·32 to 1
...
15·44 to 1
...
14·55 to 1
...
13·91 to 1
...
13·25 to 1
First gear
...
22·4 to 1
...
21·0 to 1
...
19·7 to 1
...
18·68 to 1
...
17·57 to 1
16·8 to 1
...
...
16·0 to 1
Rotation
Type
SR-1
Anti-clock
Anti-clock
SR-1
NR-1
Anti-clock
Type
Double filament
...
Single contact
...
...
Double filament
...
Single contact
Third gear
1·308 to 1
1·575 to 1
1·308 to 1
Second gear
Third gear
11·90 to 1
9·15 to 1
8·58 to 1
11·15 to 1
10·47 to 1
8·05 to 1
9·90 to 1
7·63 to 1
9·33 to 1
7·18 t o 1
8·91 to 1
6·86 to 1
8·50 to 1
6·54 to 1
Second gear
Third gear
11·03 to 1
17·25 to 1
15·98 to 1
10·33 to 1
15·0 to 1
14·2 to 1
8·65 to 1
13·38 to 1
12·8 to 1
8·37 to 1
7·81 to 1
12·18 t o 1
Point gap
·012 in.
·012 in.
·012 in.
Voltage
6
...
...
6
...
...
6
...
...
6
...
...
5
Fourth gear (top)
1 to 1
1 to 1
1 to 1
Models
Fourth gear
(top)
7 to 1
6·56 to 1
6·16 to 1
5·83 to 1
5·49 to 1
5·25 to 1
5·0 to 1
Fourth gear
(top)
7 to 1
6·56 to 1
9·7 to 1
6·16 to 1
9·2 t o 1
5·83 to 1
5·49 to 1
5·25 to 1
5·0 to 1
Ignition point before top
dead centre (with control
in fully advanced position)
Normal 39°—½"
Normal 39°—½"
Normal 39°—½"
Part
Wattage
number
3 0 x 2 4
312
3
988
1 8 & 3
352
1·8
53205
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