bambino
Dec 11, 2008, 06:38 PM
Hi, I fly small size electric rc helicopters but have been interested in hovercrafts. It is just that I see none in the market. Hovercrafts seem hard to find in any LHS.
May you tell me please what hovercraft is good to buy for a beginner? Any well known brand out there you recommend me?
First of all, I would like to know how is it that single main motor hovercrafts counteact torque reaction. In a single main rotor helicopter you have tail rotor for this. In a coaxial helicopter, both reactions cancel out. How do you work it in a hovercraft for counteract torque reaction?
About 7 years ago I attempted to build one, but it didn't work well
This a diagram of the wannabe hovercraft I build years ago. It was all made of balsa wood, except for the skirt that I made out of that kind of trasparent plastic you use to cover your books.
It lifted, not much, but it lifted a bit. I chose this configuration to avoid setting the motor shaft on a vertical position, then avoiding hovercraft starting to turn.
However, I didn't set correctly the center of gravity so when it lifted, it was not evenly lifted. In addition to that, torque reaction complicated everything.
The arrows show the direction in which I thought air should flow. The screen (that triangle in the middle of the hovercraft) was set at 30° to deflect the airflow coming out from the motor, trying to avoid major loses in power.
I just started it once. As results were disappointing, I did not try it again nor I tried to improve it. I took out the glow 0.049 motor out of it.
Thanks to you all!
May you tell me please what hovercraft is good to buy for a beginner? Any well known brand out there you recommend me?
First of all, I would like to know how is it that single main motor hovercrafts counteact torque reaction. In a single main rotor helicopter you have tail rotor for this. In a coaxial helicopter, both reactions cancel out. How do you work it in a hovercraft for counteract torque reaction?
About 7 years ago I attempted to build one, but it didn't work well
This a diagram of the wannabe hovercraft I build years ago. It was all made of balsa wood, except for the skirt that I made out of that kind of trasparent plastic you use to cover your books.
It lifted, not much, but it lifted a bit. I chose this configuration to avoid setting the motor shaft on a vertical position, then avoiding hovercraft starting to turn.
However, I didn't set correctly the center of gravity so when it lifted, it was not evenly lifted. In addition to that, torque reaction complicated everything.
The arrows show the direction in which I thought air should flow. The screen (that triangle in the middle of the hovercraft) was set at 30° to deflect the airflow coming out from the motor, trying to avoid major loses in power.
I just started it once. As results were disappointing, I did not try it again nor I tried to improve it. I took out the glow 0.049 motor out of it.
Thanks to you all!