posted 03-01-2010 07:25 PM ET (US)            

I have a 1976 135hp Johnson laying around and if I can find a sister motor, I should be able to get the Revenge airborne like a seaplane. ;-)

Good Luck with her.

posted 03-01-2010 08:45 PM ET (US)            

See http://continuouswave.com/whaler/reference/specifications. html#hulls20-22

posted 03-01-2010 09:09 PM ET (US)            

At 4200 RPM a Revenge 21 should be able to do about 35 MPH.

posted 03-01-2010 10:43 PM ET (US)            

8 GPH sounds about right for a 175 HP motor which is larger than a 150 HP motor.

If your 115 can double to fuel mileage of the 175, then the range (by your standards) is would still be 240 miles on the 40 gallon tank, which is pretty darn good for a little boat like this. Just how far you planning to go?

posted 03-02-2010 01:41 PM ET (US)            

74...I posted a pic of my top on your other thread about biminis.

posted 03-02-2010 02:04 PM ET (US)            

One of the things to keep an eye on is that internal fuel tank. It sits in a cavity that tends to collect water and moisture which will lead to surface corrosion that will eventually eat through the metal. I pulled mine, had it pressure checked and then coated it with West System epoxy to seal out moisture. Removing all the foam in the tank cavity and replacing it with bedding slats that allows air to circulate around the tank helps keep the exterior tank surface from corroding as well. I would suggest, for the time being, to install a Racor fuel / water separator between the tank and the engine. It has a clear bowl incorporated into it that allows you to see if there is water getting into your fuel. If you pick up water in that filter on a consistant basis it is time to give the tank or fuel hoses some attention.

As for the forward cooler seats...there are wooden chocks that are made to secure the cooler to the deck with bungee cord. Somewhere on the site are dimentional drawings if you want to make them yourself or Specialty Marine offers some already made. Either way make sure the ones you make or buy are made from plywood rather than solid stock. With solid stock chocks the curved extensions tend to break at the grain of the wood. I made this mistake on the first set I made. Most people use 72 quart Igloos in this application but the 94 quart size works as well.

As for reserve fuel...on my 19' the fuel pickup is at the far aft portion of the tank. I think this is true for your boat as well. But... the fuel gauge pickup is on the far forward end of the tank. The gauge will read empty before the tank is empty...not a bad thing. This means however that while on plane the fuel is way aft and in good position to be used. If you have limited fuel remaining and you come off plane the fuel settles in the tank, or actually flows forward if you are bow heavy, and may not be enough for the fuel pickup to get a consistant draw. I never let the fuel go below 1/4 tank for this reason. If you run into a low fuel situation make sure your crew is positioned aft of the console. On long hauls I carry a 5 gallon jug of fuel just to be safe. There is nothing more useless than a fuel tank full of air.

Have fun with the boat.

Dino

posted 03-02-2010 03:15 PM ET (US)         

On my 1975 Outrage 19, I recently had to do this. First of all, I found out that the built in 40 gal tank (original from factory) actually holds 42.5 gallons.

To "calibrate" your fuel gauge, put a temp fuel source in the boat, and run the belly tank virtually dry until the engine actually quits.

Then at a marina gas pump, with the boat in the WATER, record total gallons taken at EACH increment, beginning with the "E" and past "F" until the tank if totally full.