Good BL System - RC-Monster Forums

**Good BL System -** 11.09.2007, 10:56 PM

So i had my heart set out on the HV 6.5 for a little bit now and was pretty sure i was gonna go wit it...until i heard people say it is not the best way to spend $300.

so, $300 is my MAX budget. im going to be running EP 4200 7 cells. I alwso want a system i can drop in there, mainly the motor, i can deal wit finding a mount for the ESC. Im very new to BL systems so i get real confused when people talk about neu and fiego?...
i will be doing mostly bashing and i would like a top speed of 45+

I was hoping someone here would know waht set up i should go with with my budget. I heard yall were the best to talk to about this. Thanks

GorillaMaxx360 · 11.09.2007, 11:02 PM

mamba maxx esc and a fieago motor would be a much better choice probably a 9XL or 10XL motor with RCM heat sink.

BTW welcome to the forums

nl12 · 11.09.2007, 11:12 PM

I will second that, might want to gear for 40 instead of 45, it will help keep the heat down.

squeeforever · 11.10.2007, 12:16 AM

If only running 14 cells, the 9 or 10XL will be to slow. Go for a 7XL, maybe a 8XL if runtime is a concern.

11.10.2007, 01:39 AM

sweet! quick questions i forgot to ask

do you guys agree that getting the Hv is a bad way to spend 300 on brushless?
or not the most efficient?

what is the difference between the 7xl and 8xl is it a turn number?speed?

what speeds can i hit with the 7xl and 8xl

any modding required to install the 7xl or 8xl?

thanks!!!

GorillaMaxx360 · 11.10.2007, 10:27 AM

yes the 8xl and 7xl and mabey even the 9xl motors and castle esc are much better than the novak setup hands down. If i am not mistaken the number in front of the XL is the winds.

11.10.2007, 05:27 PM

i think im going to go with the 7xl and mamba max esc.

but a question, how to i wire the batteries?i see there is only one set of battery connectors. does the system still require 14.4v?

t-maxxracer32 · 11.10.2007, 06:04 PM

Quote:

Originally Posted by Andrew32

i think im going to go with the 7xl and mamba max esc.

but a question, how to i wire the batteries?i see there is only one set of battery connectors. does the system still require 14.4v?

get a series connector.

connect it to both batteries and it will connect right into the mm esc.

11.10.2007, 10:19 PM

sweet wont be too ahrd to make that.

Do i need the UBEC by castle to run 14cell?

are my EP 4200 7cells a high quality battery good for this system?

where in the world can iget IB batteries?

BrianG · 11.10.2007, 05:33 PM

The 7XL might be a little too "hot" for the MM IMO. The 8XL is the lowest I would go. But I suppose if you watch the temps on the ESC and gear accordingly, you should be ok...

Serum · 11.10.2007, 05:51 PM

Quote:

do you guys agree that getting the Hv is a bad way to spend 300 on brushless?

no, it's just you can get a more reasonable setup in terms of KV and torque. the novak compensates the lack of torque of the small rotor with a high KV. with their latest and greatest sintered rotor their motors tend to stay nice and cool, but the temperature of the controller might be rather high. Overall i like the setup. It moves well, especially on a lightweight vehicle and 4S lipo. it feels peppy.

BrianG · 11.10.2007, 11:27 PM

Yes, get a UBEC for anything 3s or more!

TBH, I think you'd be happier with lipos if you can swing it. I don't think I've seen any NiMH cells that can provide the current AND voltage BL systems can pull... not without stressing them anyway.

macr0w · 11.11.2007, 10:06 AM

Just to play devils advocate for a minute I would say that the HV 6.5 system is a good reliable turnkey setup for a Maxx.

It may not go 45 mph but we're talking about an E-Maxx here right?

It trips me out to see guys setting up a "Monster Truck" like a race car. If you want to go that fast you should put that Neu or Fieago system in a buggy. It would go faster and handle better.

I have a HV 6.5 in my maxx but it's made for bashing and running over stuff. It has all the power that the terrain I like to run on can handle.

If I put it on the street I can see where you might want a little more juice. But for off road, it has plenty of power.

11.12.2007, 08:14 PM

ok thanks for the info guys!!

another Q, would the MM and 8xl be so much powr that i need stronger diffs?

i forgot to sayi dont want a system thatll rip my stock maxx in one run

but dont worry, im going t odo a complete 3.3 conversion

11.12.2007, 10:12 PM

Quote:

Originally Posted by Andrew32

ok thanks for the info guys!!

another Q, would the MM and 8xl be so much powr that i need stronger diffs?

i forgot to sayi dont want a system thatll rip my stock maxx in one run

but dont worry, im going t odo a complete 3.3 conversion

Don't be surprised when your diffs prove to be the weak link in the drive train, even 3.3 diffs won't last. At least shim them properly and put the diffs in some cheapie metal diff cases so they can't twist under accel. That might make them last a little longer.

OS 18TM was enough to shred my 2.5 rear diff repeatedly and the 8xl should deliver more torque than that. The difference in the 3.3 diff was 2 extra screws in the stock plastic diff case so it had 4 vs the 2 screws the 2.5 stock diff case had. Was some better, but not strong enough, it can still twist enough to let R&P strip.