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HUB DIMENSIONS OF VARIOUS
ENGINES
(Measurements are in inches)
(All of these hubs used 8
bolt holes)
|
<TBODY> ENGINE |
HP |
RPM |
HUB THICKNESS |
HUB (METAL) DIAMETER |
CENTER BORE |
BOLT SIZE |
BOLT CIRCLE * |
|
BMW |
185 |
1600 |
5 13/16 |
7 1/2 |
3 5/32 |
1/2 |
6 5/16 |
|
Clerget |
110 |
1250 |
6 |
7.48 |
2.756 |
.394 |
5.905 |
|
Clerget |
130 |
1250 |
6 |
7.48 |
2.756 |
.394 |
5.905 |
|
Curtiss OX5 |
90 |
1400 |
4 |
6 |
2.690 |
.375 |
5.250 |
|
Gnome |
100 |
1200 |
6 |
7.48 |
2.756 |
.394 |
5.905 |
|
Gnome |
160 |
1400 |
6 |
7.48 |
2.756 |
.394 |
5.905 |
|
Hall-Scott A7A |
100 |
1300 |
4 1/4 |
7 |
2.750 |
7/16 |
6 |
|
Wright A |
150 |
1450 |
7 |
7 7/8 |
3.146 |
.470 |
6.693 |
|
LeRhone |
80 |
1250 |
4 1/4 |
5.905 |
2.362 |
.394 |
4.724 |
|
LeRhone |
110 |
1250 |
5 1/4 |
7 1/2 |
2.756 |
.433 |
5.905 |
|
Liberty 12 |
400 |
1700 |
7 1/4 |
10 |
3 1/8 |
1/2 |
8 |
|
Liberty 8 |
290 |
1700 |
6 1/2 |
10 1/2 |
3 1/16 |
1/2 |
8 |
|
Hispano-Suiza |
180 |
1600 |
6 |
7 3/32 |
2.756 |
.433 |
5.905 |
|
|
|
|
|
|
|
|
</TBODY> |
* "Bolt Circle" is
the diameter of the circle on which the centers of all of the bolt holes rest.
It can be easily measured by using the distance from, for instance, the left
hand edge of one bolt hole directly across the center hub to the left hand edge
of the opposite hole.