Emaxx Dual brushless with smaller motors
 

Can anyone offer experience or suggestions for setting up an emaxx with dual brushless, but with smaller motors, I don't want 1 large engine.

Well, depends alot on your budget, intended operating voltage& truck weight.
But.... I have heard of alot of people using dual MambaMax motors and escs- I would suggest either 4600kv or 5700kv depending on how fast you want to go. Or you can try a couple of Lehner basic 4200kv with appropriate escs- the motors can handle up to 10 sub-c cells which is 12v. Take a look at the Candyman's dual BL Juggernaut2:-

http://homepage.ntlworld.com/ryan.coombes/bljugg2.htm

Should give you some good ideas. But remember, the heavier the truck, the more it will strain smaller motors & the more you will need to gear down.

Thanks, I like that setup.

This is my first electric so I don't know what is considered heavy. Should be in the 8-10lb range

HCR chassis and short arms
UE vbs, ti cvds, knuckles, braces, slipper
RCM single speed FLM half tranny
Powerstrokes

I guess I'm limited to the 6 cell trays and was thinking of dual $$ batteries of some light/compact type lipo or lithium.

Can you give me the reason why you don't want 1 large motor?

welcome back DUH.. :p Thanks for the shocktowers.

8-10lbs is fairly light, given the stock emaxx is 9lbs I think. Batteries wise I would go with the A123 lithium jobbies, a 3s2p setup would be ideal I reckon, probably with the MM 5700kv motors.

Symetry....

http://rcnuts.hiamplidude.com/Resize...0DSC06826b.jpg

Its all about personal taste I guess.....:024:

Not a good one, I WAS going to go with one large motor, but picked up a tranny with a dual motor plate. This truck is my special project to make a short/narrow/smaller truck than my others. I like the LOOK of too smaller motors, more symetrical, ya know, 2 batt, two speed controll?, two little brushless motors...10th scale????

BTW: I have 4 sets of shorty towers left:

http://www.duhengineering.com/rc/img..._towers_02.jpg

True that. I do like the look of a symetrical truck, doesnt look lopsided with the motor on one side. For that reason I've found somewhere that still has the GorillaMaxx X-brace motor mount for sale- I can raise the motor up to sit directly over the tranny (facing the other way ofcourse), so it will look more like MaxxBling. Good luck with your truck 0700.

What is the sweet battery setup that will fit into the stock 6cell space?

Flightpower trackpower packs; (available through Mikes store) you can run them in 4S, for both setups and take a mild KV motor.

I personally never looked into symetry, but it looks nice, no doubt. I never considered it an option though; one single motor is more efficient and lighter.

From both point of views it are compromises.

So a pair of track packs w/balancer is THE setup?

Define 4S?

Hook them up in series, that way you run a higher voltage thru the systems and will make it more efficient.

A nice dual setup would be;

-trakpower packs (they are the best cells available)
-Neu 1509 motors (about 1800-2000kv)
-Quark 80B controller
-ubec.

I didn't think an 80B would be enough???

1509s are longer than I was thinking...

If it makes you feel better, go for the 125B!

Here is the deal;

125X14V=1750W
80X14X2=2240W

I'm a nitro guy trying to convert to electric, so i don't have a FEEL for anything yet. But I do work in electronics and understand a few things about heat effects and running electronics backed off from their maxx ratings....

In less words; yes, i think two 80B's would survive... :)

This fits? Pics installed?

http://www.rc-monster.com/prodimages...20heatsink.jpg

The Dual mamba maxx 5700's sounds like the best bet to me.

well 1.7" long is going in correct direction! I'm starting to think these are the smallest motors that will fit the Emaxx???

I would not use these small motors personally; if you want a real deal 2 motor setup, do it the right way, or stay away from it. that's my opinion. like i said; use 4S on the setup; the 5700 can't take 4S, and running it 2s makes it even less efficient.

You might like symmetry, but using two 1/10th scale systems is quite a missfit IMO..

Unless someone has a better suggestion, I'm going to have to agree with procharged5.0.

Serum, wouldn't a pair of these or 6900s on #S get the job done with two smaller motors...I guess one big motor on 4S would be more efficient, thanks for your patience....

You could use two small motors on 4S as well, which makes it more efficient. np on the patience, i am just no fan of the tiny-micro rotors that are in the mm motors. even two are not enough. a wanderer/feigao S motor delivers more torque.

But if money is an issue and you can agree with a huge compromise you could set for the dual mm setup..

It's not my advice though.

Or two MM controllers and two basic XL motors.. One basic XL motor (2400) on 3S lipo delivers impressive power in a 7lbs heavy maxx.

So the Lehner 10th scale motors are just better than the Mamba 10th scale?

BTW what do you think of that outrunner setup on ebay?

Yes, they use segmented magnets, but Neu is my favorite over Lehner.

that outrunner; i wonder what it does in real life, (how hot it gets etc) because an outrunner is meant for a fixed RPM, and not for a constant variation in rpm's. the moving mass is located rather far from the center, which makes them less ideal to respond fast to the vehicles behavior.

That's good info :028:

got a link to neu 10th scale cans?

I've seen a couple of dual motor and dual engine setups. No doubt that when setup right, they perform very well, but never as well as you'd hope they would. Of course, I haven't seen/done everything. I'd love to be proven wrong. It would give me an excuse to venture into a place that I've never, personally, been before.

The real downside is the return on investment. Figure two MM systems at about $400. For the price of a MM esc and Feigao motor, you could still have money left over for a lipo pack and it will probably run as fast or faster than the dual motor setup.

Again, I'd really love to be proven wrong.

Sorry, a small rectification;

The XL motor of the lehner Basic are not 1/10th motors, they are larger; they however don't use segmented magnets.

the more expensive series of Lehner (1920/1930/1940 etc) do use segmented magnets.

Here is a link to the Neu motors; (made in the US btw)

http://www.rc-monster.com/proddetail...091.5ys&cat=20
This is not the KV i recommend (unless you want a REAL powerhouse) but you can shoot Mike an email about the other KV values; 1800-2000kv would be nice for 4S.

Here is the manufacturers link;
http://www.neumotors.com

I'd have to agree. I also like the simplicity of the single set-up. Let weight, less wiring, less maintenance, etc.

OK, say I can be convinced to run a single motor....what is the name of this motor?
http://www.unlimitedengineering.com/...3/IMG_3732.JPG

The most trouble free of the single motor combos would be a Lehner 1940/9 with a Mamba Max ESC.

The NEU 1515 is a better motor than the Lehner but works better with a Quark 125b ESC than a Mamba Max.

those motors are plettenberg big maxximum

Sorry, I missed the question (or just mis-read it)


You don't want a BIG-MAXXIMUM. They look really cool, but there are better and more efficient motors available.

Going dual 1940 or 1515 is simple too much. IIRC you want a lightweight setup, go for smaller motors.

I'd say dual 1930's with Mamba Max ESC's running off of 4S each. Should be plenty powerful :)

WOW... two plett's, I wish I had one :017:

Well, I guess two motors may seem asthetically pleasing but its functionally un-neccessary and un-warranted. Besides, what does asthetics matter when the body cover's everything up?
Two BL systems will increase a few things though. They will increase the initial cost, increase the maintenance, increase the weight, and increase the possible failure points. The one thing it won't increase is the performance.

A single motor setup will simply out perform a dual motor setup any day of the week