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Old 10 April 2023, 00:55   #1
Country: Australia
Town: Brisbane
Length: 6m +
Join Date: Apr 2023
Posts: 1
Hysucat motor height


Just acquired an old Hysucat 6.5 and want to know the location of the cavitation plates on twin outboards in relation to the rear stabiliser foils or bottom of hulls. The boat has had some work done on transom so not sure that the motor are located at correct height.

We are getting a lot of ventilation or cavitation. The boat has twin 50 outboards. Also best prop size if anyone knows.

Any info would be appreciated.
Mako73 is offline   Reply With Quote
Old 17 May 2023, 21:22   #2
Country: USA
Town: San Diego
Make: Zodiac
Length: 7m +
Engine: Inboard, Diesel
Join Date: Jul 2018
Posts: 197
Check out HYFOIL Marine in update New York. They are the original OEM for the HYSUCAT.

Mike Quaglio
HYFOIL Marine, President

USCG 50 Ton Master Captain
USCG Auxiliary Sailing Endorsement
Support, Safety & Rescue Endorsement
ABYC Master Marine Certification

914.533.4545 (o)
SoCal Hurricane is offline   Reply With Quote
Old 03 June 2023, 11:21   #3
Country: UK - Wales
Town: Barry
Boat name: Topcat
Make: Hysucat
Length: 6m +
Engine: 2x 90HP outboard
Join Date: Jun 2023
Posts: 1
I can't be sure if mine are at the right height, but they generally work fine in this position. I do find I need to trim all the way down for maximum acceleration, otherwise the 'grip' can be poor, though with care it's still possible to get up to speed with the engines trimmed up somewhat. I certainly find the engine trim is very important in getting the right hull/foil position
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