Hi there,
I just had a quick google search on the words "indoor combat", and so I found your forum. I must admit that I don't speak italian nor spanish (which should not be so far away from italian as I have once heard), but with my french and english knowledge and a little babelfish help, I was able to get the point of this thread.
In Germany, some folks just had the same Idea like you. Fortunately, there was an indoor meeting just two weeks later near Hamburg, so they tried it out. The first point of our discussion was the security, to avoid sharp edges to get a little more concrete. The whole thing started in a forum like this, and just tree days later one of the guys put it all together in a little (german) poem, which translates like :
Pusher prop, no sharp edges,
No wood, not even formers,
300g that's it, the rest will follow.
everyone flies for his own risk, if something breaks,
well, then this happens.
In the meantime, I d'say that we have around 20 Pilots in northern Germany doing this new kind of indoor sport. You can find a german web page about it at
www.indoor-combat.de. All of the models are made of EPP like the slope combat Zagis but way lighter. The goal is a surface load below 9g/dm^2 to aim for a good stall recovery. Most of the models use a prop which lies in a slot in the middle of the model to avoid the sharp edges of a prop lying in front together with not having the CG disadvantages of a motor lying at the rear end.
I myself designed my answer to the Indoor combat thing (BTW I am aerodynamics engineer in real life ;) ). I put a free plan of the "Pogo" as PDF on our web page, have a look at
http://www.unisport.tu-bs.de/~modell...bia/klaust.htm
So long,
Patrick Wegener
Team Klaustrophobia
www.unisport.tu-bs.de/~modellflug