so ive been here reading for a while and ive come across two things i cannot seem to find an explanation of. the gyro:what is it?, and what does it do? why do we need it??
also i see ccpm advertised on the rapy and venture .30 size helis, what does ccpm stand for and what does it mean for me, the new guy.
any help would be appreciated. thanks!!!!

A gyro is an electonic device that interfaces with the radio system via the rudder channel. The purpose of the gyro is to aid the pilot by stabilizing the tail. Without a gyro, controlling the tail rotor is very difficult.

I could be wrong, but I don't think the Raptor helis come with CCPM. The JR helis do, though. CCPM stands for: Cyclic Collective Pitch Mixing. In a normal non-CCPM (or, refered to as mechanical mixing) machine, there is one servo for collective, one servo for fore/aft cyclic, and one servo for right/left cyclic. These servos are conected to the swashplate by a series of bellcranks and levers. No special mixing programs on the tx are required. On a machine that utilizes CCPM, the three servos are directly connected to the swashplate. All three move together to control collective and a special mixing program on the tx controls the servos to get the cyclic commands. There is much debate over which is better. The biggest advantage of CCPM, I can see, is that you can use standard servos safely. There are other adv/disadv. Maybe someone else can step in here and add to this.

Thanks you!!! david!!!
i was having a time with those two, thanks thanks thanks thanks!!!!!!
im thinking a .30 size raptor heli is what im gona get, thanks for all the help!!