Hi I am wondering if you can use the stock nimh 9.9v 650mah battery from a cp with the cppro? do I need to change anything if I do? what is the difference between the cppro 3in1 reciever/mixer and cp 4in1 reciever/mixer? will a cp upgraded with aeroenhancement kit and the bell hiller upgrade kit fly as well or be the same as the cppro? Do either come with autorotation gear or is this an upgrade? has anyone used a Plantraco LPC-400 charger? how good is it? If you have any answers or comments let me know as I have an opportunity to buy a used cppro or a used cp upgraded to be like a pro. Thanks

1. You can use the stock NiMH CP battery with the CP Pro, but because of the lower pinion gear and the symetrical blades you're going to get VERY poor performance. You'll be lucky to get it more than a few inches off the ground unless you pitch the blades extremely high, but then it will perform poorly with the LiPo, so I don't recommend it.

2. The difference between the 3 in 1 and the 4 in 1 is that the 4 in 1 has an integrated receiver, whereas the 3 in 1 is just the ESC, mixer, and gyro. The receiver is its own component on the CP Pro. The benefit is saving about $25 when the 3 in 1 burns up as opposed to buying the completely integrated 4 in 1 since receivers don't tend to get smoked very often.

3. The CP Pro is basically just a CP with all the upgrades. I fly a CP thats basically upgraded to a Pro (minus the 3 in 1) and it flies just as well as a CP Pro, however you cannot put a Tail lock gyro on the CP and they don't seem to react well to some of the other upgrades like direct drive tail.

4. The Autorotational gear is an add on upgrade for either heli.

Sorry, I don't have any info on the charger.

Chad

Thanks Chad