Upgrading brushless system

I want to upgrade my truck to an "overbuilt" brushless system, because my truck will be very heavy. I'm looking for something like a high turned xl motor, and a better brushless controller (rated for more amps).
I'm also looking for a lipo battery system (this is where the truck gets heavy). I run a pretty large BPP chassis, so I think I fit in quite a bit of lipo. Call me crazy, but I want 22.2 volt (18.5 nimh cell equivelent), 20,000 mah power system. I do indeed have the money to dish this out, so be creative:p .

I don't want to pull alot of amps, so maybe an 11xl motor and a 12020 esc?

If I find a system that works out for me, I will be having a Feigao 8xl (run very little), a 9920 (new, never even programmed), 2 pairs of fusion 8 cell straight line gp3300batteries (1 pair is a 1.75 volt spend $180 on it, and the other pair was 120). PM me if interested. Or give me an estimate of how much I can get out of all this on ebay.

Here is my truck so you can get an idea of its weight, and configuration (esc hasn't been mounted):

[coolhandcountry]

If you want all this power and such. I would say a 3695 controller. Run a 12 xl wander on 8s lipo. Have great power speed and run time.

Thank you.

I was looking at www.finedesignrc.com at lipos, but where will i find the 8s batteries? How many Mah will the 8 cells give me? Also, why would i need a 36 cell controller for a voltage rated at the power of 19 cells?

[nitrostarter]

You painted your topedo chassis black? looks killer! Any certain paint?

no special paint, but thank you! Coolhand, ygpm

[squeeforever]

i wouldnt go with a 8s packs. i would go with 2 4s packs in series. max amps could possible make you some custom packs or you could check out tanic, thunderpower, or fma.

[coolhandcountry]

squee has the idea. You can get most charger for a 4 s pack to. Mah is not everything. With a 12 xl you won't need but 8000 mah to run a long time. 2 x 4s packs would be above the 9920 or 12020 capacity. 8 x 3.7v= 29.6 volts the 12 xl is not amp hungery motor. I ran a 9xl on 7020 esc. With this set up you probably looking at an hour play time.

Yup, checked out maxamps. Great site.

I run for hours on end the more mah, the merrier! Thats why I have have such a beefed up drive train for my new truck (UM trans in alloy case, titanium front center cvd, rc alloy rear center cvd, Sm f/r cvds, sm 8 spy diffs).

Okay, i found the general are of batteries i desire. I want the total # of cells (not just per side) to be 6s4p or the maxamps 4000 cells. Thats 22.2 volts total, and 16000 mah total, I can shell out for $400.

So i'll end up buying the 3s 4000mah pack, then ask for a custom 1s4p pack. I'll put the 3s on the motor side, and the 1s4p on the opposite side of the motor. What charger will I use to charge these two different packs?

Who else runs lipo?

So will a 12xl and 12020 work for this amount of batteries?

Thanks again guys

[squeeforever]

how would you get 6s out of 1s and 3s?

ugg. 4s pack, then a 2s4p.

scratch that....

A 5s pack, then a 1s4p pack.

Didn't catch my arithmatic. Thanks

What charger can I use for these two packs?

[squeeforever]

if you have the cash i would go with the schulze 330d. it can charger at a high amperage, 11s lipo, and 36 nimh i think...

where will I find that?

[squeeforever]

mike might be able to get if but if not here ya go... http://www.modelflight.com.au/schulz...y_chargers.htm

Thank you.

Now I just need to decide what motor and esc to get.


If anyone is interested I might sell:

Feigao 8xl motor (has 3.5mm female gold connectors soldered on): $80

9920 esc (has 3.5mm female gold connectors on motor wires, 4mm female on battery): $185

Fusion pair of 8 cell gp3300. Matched at 1.75 volts. Deans plugs installed $135

Fusion pair of 8 cell zapped gp3300. 4mm female plugs installed $90

[Nick]

1.75v sub-c cells? :eek:

You mean 1.175v?