bblaske

My Feedback: (2)

Will the battery pack from a Firebird Commander: 6-cell, 7.2V, 900mAh Ni-MH or a 7.2v, 1100 Mah work in a Parkzone J3 Cub which calls for an 8.4 v, 600 mAh Ni-Mh ? Don't want to fry the board. Give me a range of what is acceptable for the J3 if possible.

Thanks you guys. Sure makes learning to fly rc easier when you can ask someone. I'm way up here in the mtns of NC
bob

Matt Kirsch

My Feedback: (21)

Less voltage won't fry the board.

Volts are your cubic inches. Going from 8.4V to 7.2V is like lopping two cylinders off a V8 engine. Not only that, but you went from an aluminum block to a lead block (in other words you went to a much heavier battery).

Lower voltage means less power. Higher mAh means more weight. Less power plus more weight is not a good equation...

bblaske

My Feedback: (2)

Thanks for info, Matt. I like that FAQ's idea on the electric subject. I've had my Wingo wired backward and this group helped with that one too. Right now I wish there was a way to tell if the prop is reversed when it does not have writing on the blade. Stuff like this makes RC a bit frustrating at times. Rewards are when it flys. Glad to hear I can use my Firebird battery pack in the J3 Cub.

bob blaske

Glacier Girl

My Feedback: (4)

Bblaske,
I think you should reread Matt's post. Less power more weight = doom for you.
Yes you can use the firebird packs but no they're not going to work.
BJ

Matt Kirsch

My Feedback: (21)

Sorry, I should have been a little less "creative." I find that most people can grasp electric concepts, particularly battery stuff, better when you draw parallels to engines.

The Firebird batteries are signifigantly less powerful, and signifigantly heavier than the stock J3 Cub packs. They WON'T work well, if they work at all.

bblaske

My Feedback: (2)

Ok now I understand. Must be the same volts. Thanks to you both.
bob