Noob needs advice

[handz87]

Pround new owner of an E-Savage.. My upgrades..

Proline baja crawl tires and wheels
upgraded elect connectors
s600 (not installed yet)
Orion Rocket pack 3900 mah

My question is what is the biggest battery pack I can run for my setup..

i was looking at the Venom 4600? Will this work? or am I asking for trouble?

thanks in advance

Brian

[Kostaktinos_mt]

you can actually run batteries with any capacitance as long as forced cooling is adopted...

[BitHed]

...you can run 12-14 cells altogether...This is pretty much your MAX voltage...The mAH number, usually the four digit number printed on the pack, affects your RUN TIME...The higher the mAH number the longer you rin for...Obviously you will need to keep things cooler the longer you run for...

[reddigan]

hey
i would like to know if its more important to keep your motors cold then your esc if yor are running high mah packs like 4000 or 4200

[lilredmachine]

It helps to keep both cool. You will get longer life out of both components if they run cooler. Run a 40mm fan over the ESC and a single 80mm low profile fan (both computer fans) over the motors for safety, then you can usually run 14 cells (16.8v) at whatever mah you like.


As has been said, mah only affects runtime, if you wanted you could mod the e-savage to run twin 12,000mah 7.4 lipos without issue, you would see upwards of an hour and a half runtime. It makes no real difference. However if you run higher capacity (particularly lipo) the motor system can pull far higher amps out of the cells, increasing performance but also heat.

[reddigan]

Thanx alot lilredmachine:)

I already have a 80 mm fan over my motors but i just have to find a 40mm fan for my esc. when i get a chance i will go into a computer store and ask if they have any fans. btw how much does it cost for lipo batteries?

[lilredmachine]

If you wanted a set of 8000 mah 7.4v (2 cell) lipos from Maxamps they would run you for about $240, 6000 mah about $180. However you will also need a lipo specific charger with a balance function to keep them in good condition. It IS worth making the jump though. If you think that a good pair of 7 cell IB4200 NIMH packs would cost you $130 or so, the lipo doesn't seem as costly, especially as they'll give a third more runtime and will be able to give any amp draw you ask for.