Fitting Angle - Vetus VDR 2 10 25 Instructions D'installation

3.2

Fitting angle

Each homokinetic coupling shaft should preferably be fitted at an angle be-
tween 1° and 3°.
This can be achieved in one of two ways:
- by measuring out an angle between the centre-lines of the propeller shaft
and the engine; or
- by non-alignment of the centre-lines of the propeller shaft and the engine.
If the propeller shaft coupling makes an angle both in the vertical and the hori-
zontal planes, then the angle that the coupling makes must be determined.
By using: β , the angle in the vertical plane and
V
β , the angle in the horizontal plane
H
the angle formed by the coupling can be calculated as follows:
2
β = arctan √ ( tan β
V
For angles smaller than 10°, this can be simplified to:
β = √ ( β V 2 + β H 2 )
The angle formed by the coupling can also be determined from the graph.
For example: β = 2,5° and β
V
There is a maximum possible angle for positioning each half of the coupling;
see the technical specifications.
12
030209.02
2
+ tan β )
H
= 5,5° ⇒ β = 6°
H
1°-3°
1°-3°
β
H
β
V
8°
7°
6°
β
V
5°
6°
4°
5°
4°
3°
3°
2°
2°
1°
1°
0°
0° 1° 2° 3° 4° 5° 6° 7° 8°
β
vetus® Propeller shaft coupling 'DRIVE'
8°
β
7°
H