good brushless setup advice

[secondwaiting]

i have the 4400 hv-maxx running on two 4200 mAh batteries (7.2v each) in my e maxx that has the UE racer x suspension and shocks that weighs about 10lbs with the motor and batteries. I was wondering if theres any brushless setups out there that will get me a little more torque and speed (and should i go lipo to save weight too? or keep my 6 cell batteries i have now). Also, do revos do better with jumping/bashing? i was thinking about going to the revo chassis with no alluminum to be lighter. thanks for your help guys

[glassdoctor]

Welcome to the forum! I'm shocked nobody has replied yet. :)

We love our lipos... so you know what we will say about going lipo, lol. Not only will you save weight, but you will have more raw power too, if you get a decent pack.

Others here have run both the Novak HV and other brushless setups so they can tell you first hand how they compare.

In general.... a good affordable setup is a Mamba Max esc and a Feigao 8XL motor. That will have a ton more torque than the HV and you can pretty much just gear up for whatever speed you want...

[secondwaiting]

so hows this...

mamba max esc
Feigao brushless motor 540 8xl
RC-Monster Brushless Heatsink/clamp
Ultimate BEC
and two Lipo 8000HV 2S2P 7.4V Packs




or would this be better....

Quark Monster Pro 125B Brushless Sensorless Speed Controller
Feigao brushless motor 540 8L
heatsink
ultimate BEC
and two Lipo 8000HV 2s2p7.4V Packs



and how much run time would i lose if i got two Lipo 4200HV 2S2P 7.4V Packs instead? can i even use those?


by the way, this is my first brushless system im putting together, so is the wiring and connecting and everything going to be difficult for me?
thanks again for all your help

Well, your 10lb truck is actually relatively light. Both of my trucks come in a around 13lbs.

I'm runnng the 8L in my buggy, which doesn't weight a whole lot less than your maxx; however, the 8L really is too hot a motor. If you want to go with an "L" can motor, I'd suggest either the 10L or 11L. I would highly recommend going with the 8 or 9XL for your maxx with a MM speed controller. The Quark in very nice, or so I've heard, but I have 4 MM speed controllers and love them all.

If you are on a budget, I'd go with the MM esc, the 8 or 9XL and your choice of batteries. A pair of trakpower 4900s for the ultimate in performance or a pair of maxamps 8000s for great bang for the buck and more runtime.

If cost is no object, I'd go Quark/Neu 2.5D (or the 1Y is speed is your primary concern). The logic or general rule that I've been leaning toward, as I gain experience, is around a 2000kv motor for 4S and around a 1700kv motor for 5S, although a 1700kv motor will run very well and reward you with cool running and longer runtimes.

I do have to say that the 8XL has done very well in my Muggy and Monster GT conversions. I'd stay away from the 7XL for a truck setup. I think it's too hot in a truck for 4S and definitely not for 5S lipo.

[secondwaiting]

thanks a lot, i think im gonna go with my first set up i said, but idk about which batteries yet. ive never gone lipo before, and i want pretty good run times, at least 15 min, but i want really good performance too...one more question though. stock e-revo or e maxx with gorillamaxx chassis, and UE racer x suspension and shocks? i kinda want to get the revo to be lighter, but idk if i'll break a lot on it. thanks again you guys are a ton of help for my noob questions

[glassdoctor]

The first setup listed is a good choice imo.

To keep the weight down, you can do 5000mah lipos... saves half a pound over the 8000. And 5000 will get you 15-20 minutes hardcore runtime.

Oh man, when you said that you wanted good runtimes, I didn't expect you to say 15 minutes. 15 minutes is easy with LiPo. 30-40 minutes is a "good" runtime. With my 8XL setup in my buggy, I get a good 15 minutes on my PolyRC 4400 pack. The 5K pack, should easily get you what you are looking for.

Just keep in mind that you get what you pay for. The MM/8XL is a good system, but heat will still be an issue. It won't be a matter of whether or not your setup will over heat, but a matter of when. This will all depend on how hard you run your setup and the weather. If it is always cool where you are, it may not be a issue at all.

The better motors, like the Neu and Lehner, don't generate nearly as much (actually less than half) as the Feigaos do. By all means, if you can afford it, go with the Quark/Neu 2.5D setup. It's what I'm shooing for, or something very similar. The Mamba Monster Max controller is supposed to be out soon too, but I wouldn't hold my breathe. Mike has told me that he has literally run his Quark/Neu setup for hours without any thermal issues at all. As much of a bang for the buck as the Feigao motors are, they can't do this. Really, by the time I drain an 8Ah pack, I need to let the motor cool off some, before I get back to it. We are running 30 minute mains down here, and when it gets hot and humid, I can't run for that long.

The reason I mention the Quark is because the Neu motors are reputed for not playing nicely with the MM controller, or should I say that the MM doesn't play nicely with the Neu motors (4 pole motors) and the Lehners (2 pole motors) are not available right now. Besides, since you are starting off new with the Lipos, you could just as easily get into a 5S setup, since the Quark will do 5S. Then you could just get an even lower kv motor and run that on the 5S for even cooler and more efficient running. I just switched to a 5S setup and the first thing I noticed is how much cooler everything runs. The motor and esc.

[secondwaiting]

hmm now i don't know... i'm moving to arizona next year so i'll be driving where it's hot, so the quark/neu combination sounds kinda good. and so do 30 minute run times, but i'm perfectly fine of doing 15 or 20 if that makes my motor last longer and not overheat... and how important is weight when it comes to breaking parts? i keep busting plastic bulkheads when i jump and i dont want to buy any more alluminum, so what do you suggest...8000s for longer run times or 5000s to save weight, and just get like 2 sets of batteries? and is the neu/quark pretty much what i have to do for arizona weather so it doesnt overheat? does that need a fan too?

[Serum]

The Neu/quark is one of the best combo's you can buy at this moment.

But for 4S, the 8XL and mm/ubec would be a nice setup too.

the 8K packs deliver more burst peaks than the 5K packs, so if you need 2 sets of bats, i would take two 4S2P of the 8K packs.

[zeropointbug]

Me want a Neu... :frown:

Anyone want to trade a C-7Xl for 1515/1y Neu ? :027:

Stay away from my Quark though...

[BrianG]

Sorry ZPB, if you want a Neu, you MUST give me your Quark. :)

It's funny what the "hot" setup is at any given time. For a while it was an XL (or LMT) with a BK warrior, then it was the MM and an XL (or LMT), now it's the Quark and the Neu. Evolution - gotta love it!

Don't get me wrong, there is nothing wrong with the MM/8XL setup. You just have to keep an eye on things more than you would with the Quark/Neu setup. Besides, I don't know if you've ever had a vehicle that had 30 minutes of runtime, but I'm usually tired of driving before the battery gives out. The example that I posted before were under a race situation. Bashing shouldn't be a problem. Or racing for that matter. I'm just having trouble with the 30 minute mains and at this point, I'm wondering if going with a 9XL as a race motor wouldn't cure that.

[zeropointbug]

I'm curious, how does a 1Y Neu compare to a 2.5d when running the proper voltage to get the same motor power? As far as temp-wise

How does a Neu/1y compare to a 7XL on the same volts, say 4s LiPo.

If I got a Neu, I think I would get a 2.5d though, higher voltage.

PS. Brian, keep your dang meat hooks off my Quark! :mad:1

:005:

[SixShooter]

Originally Posted by secondwaiting

Also, do revos do better with jumping/bashing?

Now are you looking to bash or are you racing?


The reason I ask is from what I read, lipos aren't really suited for bashing. I'm sure others can chime in with more info than me. Now I do recall some where there is a few lipo packs that was built a little tougher? As for run times, that is pretty easy with typical packs. I run around 10-15 minutes with some off brand 4200s and stock titans. I'm about to install a Novak HV my self and I'll be running some 7 cell IB 4200s. Those should easily make 15minutes and have tons more power than my off brand packs.

[BrianG]

As long as your packs are firmly secured to their tray and adequate protection is provided in case something breaks (to keep the broken objects from puncturing the cells), lipos are fine. Of course, if you plan to bash where there are lots of pointy objects around, NiMH cells might be a better choice. :)