want to buy Lipos

[rschoi_75]

the esc can handle up to 6s lipos, so for more power you can run two 3s packs in series. A 5s pack would be similar to what you are running now, since the reduced weight should off set the slight loss in voltage.

Your current charge can handle up to 3s lipo packs, so you can stick with your charger, but you'll be pushing its upper limits. Check out any of the chargers in the rcm store, or the new hyperion chargers at maxamps.

edit: (ya'll are quick.... I type too slow). my post is an echo of the two above.

[jhautz]

Check out the TrueRc. The 8000mah 3s and 2s packs on this page are great for the money. Ive beeen using them for quite a while and for the price they are unbeatable IMO.

http://home.comcast.net/~truerc/read...eady_packs.htm

As for a charger. I like the Super Brain 989 for value to performance. The 977 you have will work, but it will only charge the 2s pack at 3 amps and the 3s packs a 2.5 amps. that means about 2.5 - 3 hours to charge a pack, but you can charge 2 at a time.

If you do go to 6s on the 9920 and the 9xl make sure you drop your gearing a few teeth to keep the temps in check. I really think you will notice a huge difference just by going to 5s from the NiMH you have been running.