Onan UF Series Instruction Manual And Parts Catalog page 11

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
P U L L E Y
S I Z E
600 700] 800
G E N E P
1
900
ATC
1000|1100
)R P U L L E Y
i
1200
S I Z E ]
1300
*EQU]
1400[1500
R E D (15OOR
i
1600
PM G
1700
ENER
1800)1900
ATOR)
i
2000
6
2i
3 3 3i 4
5 5 5i
6
64
7 7
74
8
6i
H 3
3k
4 4i 5
5 5i 6
6i
7
74 8 8
84
7
3 3 3i 4 41 5 5i 6 6i 7 7 4
8 8i 9
94
7i
3 3i 4 4i 5 5i 6 6i 7 7-i 8 84 . 9
94 10
8 3 3i 4
4i
5 6
6i
7
74 6 64 9 94 10 IOi
8i ! 3i 4
4-i 5 5i 6 6i
7i
8 8i
9
94
10 IOi
l l i
9 3i 4
4i
Si 6 6z 7 7i 8i 9 9i
10 11 114 12
9i 4 4i 5 5i
6
7 7i 8
9
9i
10 IOi l l i 12 12i
10 4 4i 5 6 6i
I
1
,
8 8i
di 10 10
11
12
12i 13i
10i 4 5 5k 6 7 li. ei 9 10
IOi 11 12 12i 13 14
11 4i
5
6 6i
li
8 9 9i ioi i i
l l i
I S i
13
14
144
l l i
*\
5i
6,
7 7i 8i 9 10
10 i
ni
12
13
14
14 4
154
12
5
I'
§
7 8 1 9
94
10i 11
12 13 134 145 15 16
12i 5
Vi
fii 3
10 11 l l i
125 134
14 15
16
164
13
5
6 7
n a;
93
ioi
i i
12 13
14
145
15i
164
17i
13? 51 6 7 8 9 10 11 12i
13-i 144 15i 16 • 17 18
14
5-i
6i 7i
9-i
10 11 i ?
13
14 15
16 17 174 164
14j 6 7 8 8i 9i IOi l l i 12i
13i 14 i 154
164
174
18 4
19 i
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 12i 13i 14 i 15?
16 j
184
194 204
16 6i 7i 8-, 9i 105
H i I 2 i
14 15
16 17 18 19 20 21
16i 6 i 7i 9 10 11 12 13 14 i 15i 16i 174 164
20 21 22
17 7 8 9 10
l l i
12i
13i
H i
16 17 18 19
20
214
224
17i
7 8 9i IOi l l i 13 14 15
16i 175
184
20 21 22 23
18 7 8}
9i
10i 12 13 14 i
15i
17
18 19 20
214
23
24