Jet Mainshaft Alignment - Hamilton Jet HJ241 Manual

3 DESIGN BASICS
3.4 J M A
ET AINSHAFT LIGNMENT

3.4 JET MAINSHAFT ALIGNMENT

(PORT & STARBOARD JETS ONLY).
The HJ 241 Waterjet Mainshaft is inclined at an
angle of 5º to the Intake base.
When the port and starboard Jets are mounted at
the Hull Deadrise angle, the Jet Mainshafts are no
longer parallel to the keel line in plan. The following
PLAN
TRANSOM
ELEVATION
TRANSOM
HULL DEADRISE ANGLE
0°
5°
10°
15°
20°
25°
30°
3.12
PORT
B1
B1
STARBBOARD
INTAKE BASE LINE
INTAKE
MAINSHAFT ANGLE RELATIVE TO KEEL
B1
0.0°
0.4°
0.9°
1.3°
1.7°
2.1°
2.5°
Figure 22: Jet Mainshaft Alignment
table lists the angle deviation of the Jet Mainshaft
when the Jet base is mounted parallel to the keel
line.
FOR INTAKE BASE PARALLEL TO KEEL LINE:
B1 = Shaft angle in Plan view.
B2 = Shaft slope in Elevation.
KEEL LINE
B2
KEEL LINE
B2
5.0°
5.0°
4.9°
4.8°
4.7°
4.5°
4.3°
HJ-241 / HSRX