ORIGINAL: nitrobasher
I was wondering if a Biplane would be a good second plane (Sig Hog Bipe)
and if they are how hard are they to build??
also I was at my local hobby shop, and i saw a prop. with 3 blades... whats the difference between 3 blades and the normal 2?
If you are thinking of a Hog Bipe for a second plane, then ask yourself these things:
Can I do most anything I want with my trainer without getting disoriented [sm=spinnyeyes.gif]and be completely comfortable in doing it?
Can I stall my trainer and get it flying again at a moderately low altitude without to much concern?
Can I land my trainer with more speed than usual and still grease it on?
The first question is to see if you are over the disorientation thing most of us go through when we start flying plus are completely comfortable with all of your maneuvers. Most Bipes are easy to get disoriented with. Now, you would think that it isn't so with 2 wings up front and all, but I have seen and experienced it myself with my 2 Bipes (Ultimate and plans built Starduster Too).
The second question is based on that most Bipes will drop fairly quickly when stalled. The Hog usually just drops the nose, but it does drop it quicker than a trainer would.
The third question is based on your ability to handle landings at a higher speed. Bipes have quite a bit more drag so airspeed must be kept up. I found the best way for me to land a bipe is to keep one or two clicks of power on until about a foot off the runway, then cut throttle and let it settle in.
The instructions do assume that you are familiar with certain building techniques so for that reason I would not do it as a first kit.
I would also suggest a low wing for some practice. World Models Mach II is a good choice as it is inexpensive ($70) and has a fully symetrical wing. Makes a great transition plane while you are building the Hog. The SIG Four Star series

is a great second plane and will serve you well long after you start flying Bipes.
3 blade props look cool on most any plane. They offer great braking in the air.
Do a search in the building forum. You will probably find all you want about building the Hog. As is usually the case with SIG planes, they fly great.