Neat model airplane!

You guys know im always lurking around on youtube looking for some neat automotive stuff. But, im also a huge aviation buff! Have any of you guys ever listened to a big radial engine? At idle, they make a sound just as sweet as a bigblock mopar with a big fat cam!! Model airplanes are getting very popular (& expensive!) these days. Here is a model plane with a supercharged 400cc model airplane radial engine. Listen to this thing lope!! & its only 400cc!!:cheers: (Starts it up at :45)
http://www.youtube.com/watch?v=kYrL-eGEOUY&feature=related

Here is the same model flying around. UNREAL sound at :40!!
http://www.youtube.com/watch?v=oHfvbxim2_o&feature=related