Model
Touring
Competition (Rigid)
Competition (Spring)
First gear
2·65 to 1
3·199 to 1
2·65 to 1
Second gear
1·70 to1
2·437 to 1
1·70 to
1
Third gear
1·308 to 1
1·575 to 1
1·308 to 1
Fourth gear (top)
1
to 1
1
to 1
1
to 1
Gear box ratios
Gear ratios, Touring (Rigid and Spring Frame) and Spring Frame Competition
Models
Engine sprocket size
15 teeth
(c) 16 teeth
17 teach
(a) 18 teeth
19 teeth
20 teeth
21 teeth
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
Second gear
11·90 to
1
11·15 to 1
10·47 to 1
9·90 to 1
9·33 to 1
8·91 to 1
8·50 to 1
Third gear
9·15 to 1
8·58 to 1
8·05 to 1
7·63 to 1
7·18 to
1
6·86 to 1
6·54 to 1
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
(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
18 teeth
19 teeth
20 teeth
21 teeth
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
Second gear
17·25 to 1
15·98 to 1
15·0 to 1
14·2 to 1
13·38 to 1
12·8 to
1
12·18 to
1
Third gear
11·03 to 1
10·33 to 1
9·7 to
1
9·2 to
1
8·65 to 1
8·37 to 1
7·81 to 1
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
(a) Standard for 350 c.c. Models.
(b) Standard for 500 c.c. Models.
Ignition (magneto)
Model
Touring 350 c.c.
Touring 500 c.c.
All Competition
Make
Lucas
Lucas
Lucas
Type
SR-1
SR-1
NR-1
Rotation
Anti-clock
Anti-clock
Anti-clock
Point gap
·012 in.
·012 in.
·012 in.
Ignition point before top
dead centre (with control
in fully advanced position)
Normal 39°—½"
Normal 39°—½"
Normal 39°—½"
Lighting (bulbs)
Location.
Head lamp (Pre-focus)
Pilot lamps
Rear lamp
Speedometer
Type
Double filament
Single contact
Double filament
Single contact
Voltage
6
6
6
6
Wattage
30x24
3
1 8 & 3
1·8
Part
number
312
988
352
53205
(b)
(b)
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