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8
I N S T A L L A T I O N
1500 RPM GENERATOR PULLEY SELECTION TABLE
USE THIS T A B L E ONLY FOR GENERATORS STAMPED 1500 RPM ON
THE GENERATOR NAMEPLATE.
The pulley sizes recommended in this table are approximate sizes only,
in 1/2" Steps. The sizes shown do not include any allowance for belt
slippage. Belt slippage for flat belts may sometimes reduce the gen-
erator driven speed, under load, as much as 5 percent.
To select a generator pulley size from the table, measure the DIAMETER
(not the distance around) of the driving pulley. Select the line at the
left side of the table for the driving pulley size. Follow this line across
to the speed column that is nearest to the recommended speed of the
driving pulley. The size in the square at this point is the approximate
size of the generator pulley which will be required. If the recommended
size pulley can not be obtained, select one size smaller pulley. This
will help to offset belt slippage. Adjust throttle or governor as neces-
sary to obtain proper speed.
Example: If a 12 inch drive pulley operates at 1100 rpm, follow the 12
inch line across to the 1100 rpm column. The generator
pulley size at the point of intersection is 9 inch. This example is out-
lined in heavy lines in the table.
DRIVING P U L L E Y SPEED IN REVOLUTIONS PER MINUTE
DRIVING
PULLEY
SIZE
600 700| 800
GENEP
I
900
ATC
1000|1100
R PULLEY
i
1200
SIZE ]
1300
*EQU]
1400|1500
RED (1500 R
1600
PM G
1700
ENER
1800
ATOR
1900 2000
6
j 2i
3
3
35
L
4
4k
5
5
5i
6
64
7
7
74
8
6 i
i 2i
3
3i
4
4^
5
5
5i
6
64
7
74
8
8
84
7
! 3
3
3i
4
41
5
5?
6
64
7
7k
8
84
9
94
li
3
3-i
4
4i
5
5k
6
64
7
7 k
8
84
9
94
10
8
3
3*
4
4i
5
6
6i
7
Vi
8
8k
9
9 k
10
IOi
8i
3i
4
45
5
5i
6
6 k
7 k
8
8 i
9
9 k
10
10k
I l k
9
3t
4
45
5 k 6
65
7
li
85
9
9i
10
11
l l i
12
95
4
45
5
5i
6
7
75
8
9
94
10
104
I l k
12
124
10
4
4i
5
6
6i
7k
8
85
95
10
10
11
12
12k
13k
10-i
4
5
5 k 6
7
7 k
8k
9
10
IOi
11
12
124
13
14
11
4i
6
6 k li
8
9
94
IOi
11
I l k
12k
13
14
144
l l i
4?
5i
6
7
li
8 i
9
10
104
I l k
12
13
14
14 k 154
12
5
5 s 65
7
8
1 9
9i
104
11
12
13
134
144
15
16
124
6
e-i
7 k
8k
10
11
l l i
124
13k
14
15
16
164
13
5
6
7
7k
8i
95
104
i i
12
13
14
144
154
16k
m
13i
5-i
6
7
8
9
10
11
uk
12i
134
14 i
1 5 i
16 . 17
18
14
64
6*
75
8?
9 k
10
11
12
13
14
15
16
17
17k
184
14i
6
7
8
8i
95
10k
l l i
124
13k
14 k 151
16k
174
18 k 19 i
15
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
15i
6
7
8
9
IOi
115
124
134
144
154
16 k
17*
18 k
194
20i
16
6i
7 i
8 i
9t
IOi
l l i
124
14
15
16
17
18
19
20
21
16i
6 i
75
9
10
11
12
13
14k
154
164
17k
1 8 - «
20
21
22
17
7
8
9
10
l l i
125
13i
14 k 16
17
18
19
20
21k
224
17i
7
8
9 i
105 i i i
13
14
15
164
174
18k
20
21
22
23
18
7
84
9i
IOi 12
13
144
154
17
18
19
20
214
23
24
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