Onan UF Series Instruction Manual And Parts Catalog page 39

8 I N S T A L L A T I O N
1500 RPM GENERATOR PULLEY SELECTION TABLE
USE THIS TABLE 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 7O0f 800
GENEF
- 4—
|900
ATC
1000
R PU
1100
LLEY
i
1200
SIZE]
1300
*EQU:
1400
RED (
1500
1 3 OOR
1600
PM G
1700
ENER
1800|1900
ATOR)
i
2000
6
2j
3
3 3i
4
4k 5 5 54
6 64
7
7
74
8
6i
ii 3 3k 4 4i 5 5 Si 6
64
7
74 8 8 84
7
3 3 3i
4
41
5
54 6 64
7
7k
8
84 9
94
7t
3
3'i
4
4i
5 5k 6 64 7 74
8
84
9 94 10
8 : 3 3i 4 4-i 5 6 6i 1 74 8
84
9 94 10 104
8i i 3i 4 4i 5 5i 6 6k 7k 8 84 9 9 k 10
104 Uk
9 3i 4 4k 5i 6 6k 7 74 84 9
94
10 11
114
12
9i 4
4i
5 5i 6 7 7i 8 9 9i
10
10k Uk
12 124
10 4 4i 5 6 6k 7k 8 8k
9k
10
10 11
12
124 13k
10i 4 5 Si 6 7 7k 8k 9 10 104 11 12
124
13 14
11 4i
5
6 61 7k 8 9 9k 10k 11 Ilk 12k 13 14
144
l l i
4?
5i 6 7 7i 8i 9 10 104
l i t
12 13 14 14 k 15k
12 5 55
64
7 8 1 9
94 104 11
12
13 134 144
15
16
12-i
6
6 6i 7i
8 k
d 10 11 l l i 12k 13k 14 15 16 161
13
5
6
1
7k 8i 9-i 10k i i
12
13 14 144 154 164 174
13?
5i 6
7 8 9 10
11
ni
124
134
144
15i
16 . 17
18
14
Si
6i
7i 8k 9 k 10 11
ii
13 14 15 16 17 174 184
14i 6 7 8
8i 91
10 k
uk
124
134
14 i 15i 164 174
18 k 19 4
15 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
15i 6 7 8 9 IOi l l i
124
134 144 15k 16 i
17*
18k 194
20i
16
6i
7 i 8i 9i 104
i i i
124
14 15 16 17 18 19 20 21
16 i 6i 7i 9 10 11 12 13 14k 154 164 174 164 20 21 22
17 7 8 9 10 H i 125 13i 14k 16 17 18 19 20
214
224
17i 7 8 9i 105 l l j 13 14 15
164
174
18k 20 21 22 23
18 7 8-i
9i
10i 12 13 144
154
17 18
19 20 214 23 24