- Joined
- Apr 1, 2002
- Messages
- 4,101
I decided to try my hand at designing a 20 Sport Hydro. As can be seen from the photos, the design incorporates concepts(Flat Plane Technology) developed by Rod Geraghty and David Hall for the JAE hydroplanes. Rod has been very supportive of my design endeavors.
I built the boat to conform to NAMBA 20 Sport Hydro rules. It does have a transom mounted strut which should be NAMBA legal next year if the strut rule change proposal is approved.
The boat is constructed using WOF methods. The overall length is 30 3/4", the width of the tub is 6", the sponsons are set 10 7/8" apart. The cowling is a Phil Thomas epoxy glass cowl that Phil had laid up for a 40 Sport Hydro. The hardware is Speed Master.
The engine is a 3.5 Nova Rossi PLUS M, an Andy Brown muffled pipe, and I tried two props today - X442 and a Joe Monohan 1445. Grim Racer 50% fuel.
The first two run were made using the X442 and a third and final run with the 1445. The boat launched easily with both props. The speed and cornering were as good as my 8 year old Mini Mutt. After just 3 runs, I'm really pleased with how well the boat runs.
JD
I built the boat to conform to NAMBA 20 Sport Hydro rules. It does have a transom mounted strut which should be NAMBA legal next year if the strut rule change proposal is approved.
The boat is constructed using WOF methods. The overall length is 30 3/4", the width of the tub is 6", the sponsons are set 10 7/8" apart. The cowling is a Phil Thomas epoxy glass cowl that Phil had laid up for a 40 Sport Hydro. The hardware is Speed Master.
The engine is a 3.5 Nova Rossi PLUS M, an Andy Brown muffled pipe, and I tried two props today - X442 and a Joe Monohan 1445. Grim Racer 50% fuel.
The first two run were made using the X442 and a third and final run with the 1445. The boat launched easily with both props. The speed and cornering were as good as my 8 year old Mini Mutt. After just 3 runs, I'm really pleased with how well the boat runs.
JD