Radio Equipment
Most beginners to aerobatics will already be competent fliers and will wish to use their current equipment in an aerobatic model. No problem with this but make sure it is trouble free as flying aerobatics is sure to find any weakness in the radio or the model.
Only use a full nicaded set. If you are going to use extra servos consider upgrading the receiver nicad to 700mah. Anything less than 100% and discard it!
If you need to buy extra servos buy ball raced only, especially for aileron and elevator, where any slop will show itself in wandering neutrals. Mid range servos are fine eg, JR 517, Futaba 3001.
Use two servos for aileron, if possible with a Y lead. This has the double benefit on enabling an accurate short linkage to each aileron , and should a servo fail in flight, you will have a fighting chance on saving the model.
When installing the radio, wrap the receiver in high density foam and tape it up, don't just poke the receiver into foam, where it would stand no chance in a crash. Ensure none of the wiring is trapped or can chafe on the fuselage sides.
Do not mount the elevator and rudder servos transversly across the fuselage, it causes rocking of the servo under load. Use the servo grommets and eyelets supplied, just tightening the mounting screw enough so the that the grommets are only lightly compressed. Also wrap the receiver battery up in high density foam, it could cause considerable damage to the receiver or servos in a crash. Lead the aerial to the outside of the fuselage, insulating with fuel tube to prevent chafing. Mount the switch inside the fuselage, using a thin piece of wire to operate.
There are three levels of radio equipment available:-
1, Entry level - Basic 4/6 channel, possibly with dual rates, retract switch
2, Mid Range - Programming facilities, several mixers, snap roll switches etc.
3, Top of range - Full programming, mixers on all channels, assignable switches etc.