For example, what you do is use your radio to set up your pitch curve to go from about -10 to +10 degrees on your collective. You then set up your throttle curve to go from +100 to +100. It ends up a little like this:


3 pitch curve

Pitch.......-10.....0.....+10
Throttle....95....25....100


5 pitch curve.


Pitch.......-10.....-5.....0.....+5.....+10
Throttle...95.....70....23....75.....100


This makes it so you hover at 3/4 stick upright and hover at 1/4 stick inverted. The more pitch curves you have the easier it is to fin tune your engine and head speed.


A normal pitch curve while hovering at half stick looks like this.


3 pitch curves

Pitch.......-4.....+6.....+10
Throttle....0.....50.....100


5 pitch curve.


Pitch.......-4.....+1.....+6.....+8.....+10
Throttle...0.......25....50......75.....100




Don't get a radio that has less than 5 pitch curves. 3 pitch curves make aerobatics very tough unless you have a governor... then again if the radio is good enough to use a governor it's also going to have 5 pitch curves. What a governor does on the heli is keep the head speed the same by adjusting the throttle.