Originally Posted by
St.Marek
Hello.
Thanks for informations about GPS. AirBoat on water is jumping too much. You must to change the center of gravity and will be ok. Can you drift on this boat ???
Greetings from Poland
Marek&Wojtek
The way my hydrofoils balance the bow ends up being lighter for speed. Hold by the prop nut. If it hangs level, it should be good to go. If its bow heavy, it's gonna hop (porpoise). It will probably porpoise if its too light in the bow and consequently blow over. This boat has always been bow heavy and it's almost always porpoised. With the right amount of weight in the right spot it will balance out. I started this R120 install with the prop's centerline (thrust line/balance point/CoG) at 1/3 total hull length +1/2". Something like 10 3/4" from the transom on a 32" length hull. The Lowrance GPS adds 8oz of weight to the boat with Alkaline batteries (2). There are MUCH lighter options like the little Garmins. So to recap - bow heavy = move engine forward. Bow light = move engine back.