Hull Unit - Honda Hondex HE-773-III-Di Operation Manual

2. Hull Unit

Please make sure to choose the proper location of hull unit to be installed. The important
points to be concerned are safety (intensity and water tightness) and easy maintenance.
Please make up double layer of
PVCpipe and FRPpipe coating
with FRP upward from bottom.
Fix Hull unit onto the bottom
of vessel firmly so that vibration
of vessel does not affect the
perfomance.
(Use FRP as the fixation material).
Add an extruding part of approx.5mm with FRP for the purpose of reducing the water
pressure inside the pipe while sailing.
Pipe Length : Lt
The installation method defines the pipe length accordingly. Cut off the unnecessary parts.
Also, take a note for the pipe length as the reference figure of adjusting upper/lower
shafts.
Be sure to keep the room for the hull unit.
Pipe Length: Lt : Min.300mm (Stroke: 150mm)
(Full-loaded water line + Min.100mm at least)
Min.300mm pipe length is required even when waterline is 200mm or less.
Remaining Length Yt: Min.70mm
Shaft Length: Pipe Length (Lt) + Stroke + Remaining Length (Yt) – 130mm
Max.Waterline
Extruding part
69
Add FRP for 20mm
over the waterline.
Water direction