I'm not saying it's outright warfare between airplane and helo pilots. There is the same tension between the electrics and fuel people and between the speed planes and slow flyers. Heck within the helo there are the 3D'ers and scale guys. There will always be tensions. Some of the tension in a club that allows both helos and planes (and not all clubs allow both) is that the helo people when learning hover a lot and disrupt the normal pattern of flight for the airplanes if there is no designated hovering flight. many helo people think it's their right to hover over the runway and don't realise how dangerous it is to the normal airplane pattern. Airplane people just flat don't like the helos, their noise, their pilots, and feel they should take their toys elsewhere. Many helo pilots say heck with it and go fly at parks, back yards and stuff where they really shouldn't be flying.

The popularity of "toy" and electric helos has also caused a lot of people that have no buisness trying them hurting themselves and putting spectators, their kids, and themselves in danger.