[ Return to Contents | Post a Reply | Post a new message ]

A standard designed inflatable sport boat doesn't work with an outboard Jet motor. There are two basic design problems that make them incompatible. The first problem is that the transom is very susceptible to damage in shallow water where the fabric covers over the bottom of the transom. The second problem you have is the hull shape where the keel ends and the transom begins. There is a little bend that disturbs flow of the water where the jet foot is trying to do the intake this is the cause of your cavitations problems.
I agree with Mike.  You need either trade out either your boat or motor. The combination you have will never work together to your satisfaction.      


I designed the 401AJR Alaskan Jet Ranger 401AJR specifically to be used with the 20hp Merc Jet outboard. With 2 people this boat will run 20mph in less then 3 inches of water. It has a 4000 denier bottom to take whatever abuse you can through at it.
Here is the web page on the Alaskan Jet Ranger inflatable jet boat.
http://www.alaskaseries.com/alaskan_jet%20ranger.htm

Good Boating

Jim King

Message Thread:

• Problems with my inflateable?20 merc jet stainless May 22 2005
  • Inflatable Jet boat Chatter on the Net Alaska Series Inflatable Boats Jun 16 2005
  • Inflatable Jet boat Alaska Series Inflatable Boats Jun 14 2005
    • The saga continues!!! stainless Jun 27 2005
      • Mercury took it back stainless Jul 30 2005
  • A Few Suggestions Tracey Harmon May 24 2005
    • re: a few suggestions stainless May 25 2005
      • Inflatables and Jets Tracey Harmon May 28 2005
        • re inflatables and jets stainless May 29 2005
      • Power Traveler Pictures Here! Michael Strahan May 26 2005
  • Two Choices Michael Strahan May 22 2005
    • stuck with the boat? stainless May 22 2005
      • Re shoe fins stainless May 23 2005
      • Installing fins fishslayer May 23 2005
      • shoe fins fishslayer May 23 2005