Does anybody run li-po's?

[jackeb]

I was wondering if any of you guys run your tanks on li-po's?
Coming from a RC heli background li-po's make more sense to me. They come in comparable size packages, actually my 11.1volt, 2200mah packs are smaller. The big advantages are; You can draw higher amperages through a li-po (a 2200mah battery rated at 30c could sustain 66 amps!) just the thing for tackling those steep inclines. The other big plus is the Imax B6, for instance, can charge at 5 amps. So if the battery's up to it, and most modern li-po's are, a battery can be charged in half an hour.
Actually I think I've just talked myself in to getting a couple of li-po's to give it a try!
Your thought and comments would be appreciated.
Cheers.

[JayBrd]

I intend to but have not had too much time to mess with anything yet. I have some hardcase 4000MaH race packs I want to try. I have a lipo low voltage alarm for them also. Just have to plan how I want to run the leads for all of it.

[jackeb]

I've spent the last hour looking in to it and it seems to me that 5000mah 30c packs are widely available, at a size that would be a good fit. My inclination would be ditch the Tamiya connectors and fit deans, which is an easy job for anybody who can use a soldering iron.
My thoughts are that a battery capable of giving 150amps running 3:1 ratio boxes would give formidable cross country performance. The only weak spot I can for see are the brushed motors burning their brushes quickly but, maybe, some Xtreme 180 motors might work, with the right sized pinions.

[JayBrd]

With high MaH Lipo's it's a must to run a Dean's connector or another type low resistance connector. Using a tamiya connector will pretty much fuse the plastic together, not to mention it will defeat the increased power and runtime of the lipo..

HobbyKing has a 4000 25C hardcase battery for like 27-28 USD that are worth every penny..

[Dietrich]

Hi,
How do the ' Xtreme 180 motors' compare on power output and torque to the GRAUPNER 400's and does anyone know if the mounting screw holes in the Xtreme 180 motors will line up with the gearbox holes in the Heng Long ??

[Saxondog]

The gearing calculator may help to determine pinion gearing which really should not change with motor upgrade,but my concern is the RX18 Board burning out because of the higher amp demand. Their is a post on this forum where this issue was discussed?

I'll try and find the post,Sax

http://www.rctankwarfare.co.uk/forums/v ... mps#p36020" onclick="window.open(this.href);return false;

[buckeye36]

I run Lipo's in my ElMod Jagdpanther, 5000mah 11.1 volt.
The JP has Asiatam 3:1 with Promax 400s and it's a beast, lots of torque and speed---going to have to program down the speed.

[jackeb]

Interesting that your running 11.1 v. What Elmod electrics are you running?

[buckeye36]

Eco board with Sound Blaster.
The system is rated to 12 volts and has built in Lipo cell monitoring/undervoltage proection.
Monitors 2 and 3 cell lipos only, shuts the tank down at 6 or 9 volts respectively.

[jackeb]

Cheers for that. That's made up my mind. Elmod Eco it is!