# Thread: the dewalt on 6s????

1. Originally Posted by M n M
I just want to make sure that I'm tracking with the terminology.

Batteries wired in a parallel system doubles the MAH rating but the voltage remains the same.
2 each 2s 5000 MAH batteries = 8.4 volts at 10,000 MAH

Batteries wired in series doubles the voltage but the MAH remains the same.
2 each 2s 5000 MAH batteries = 16.8 volts at 5000 MAH

What is the above diagram considered? Since it have two sets of wires going to the ESC and two sets going to each motor is it considered parallel?

Are 2 each 2s LiPo's wired in a parallel system considered 4s? It makes more sense to me to call it a 4s if they are wired in series.

I have a single DeWalt motor and a stock EVX-2. So it's two sets of wires going into the ESC, two sets coming out of the ESC to power the motor(s). But the wires powering the motor have been wired in parallel (red to red, black to black) to accommodate the single DeWalt. Seems like everything is wired as a parallel system.

I have another question. My cheap voltage meter says each 2s LiPo has a tad over 8 volts. Why is only 14ish volts getting to the motor? Is the ESC holding back some voltage or am I losing some voltage due to wiring and resistance?
1) yes parallel doubles capacity, voltage is single
2)yes series doubles voltage, capacity is single
3)The diagram is series the evx2 is wired internally as series
4) 2 batteries os 2s connected in parallel is 2s, if in series it's 4s
5)the input is series the output is parallel or i've read that wrong somewhere.
6) You have to power the reciever and servo's also (BEC side on evx2)

2. 6) Oh ya, that's right... Duh

3. Originally Posted by goalieman3037
I ran mine on 6s! using the mamba max pro esc, but before i decided to use the mamba max pro I ran it on the exv-2 ( not the new one that is lipo ready), so I never used lipo just 7 cell NimH, Im pretty sure that people have ran the none lipo ready evx-2/dewalt setup on 4s without any trouble, but remember you'll need a external LVD to protect your lipos like this...
I meant have you run it on 4s or do you always use 6s? I thought maybe you had it running on 4s and ten decided to try the 6s and posted the video. I'm going to look for one of the new evx-2's with the lvd. I don't like the lack of a computer interface like the castle products but oh well I guess.

Oh, what kind of run times are you getting? What mah? Unless I missed it somewhere.

4. OHHHH sorry 84supersport , no I haven't ran it on 4s ,but it think trax de max has! I went straight to 6s ( I can get 20+ minutes on 5000maH batteries)... and now the verdict is in, I got the new drive shafts centers today and the Maxx is back, ran it today on 6s with the new motor fan and geared at 18/68 I ran it hard ( because that the only way to run a Maxx) on/off road starting and stopping, and after 20 hard minutes my motor temp was only 133*F!! and the batteries were so cool I didn't even check the temps! and with all my power mods ( external cc bec) both batteries were within .04 volts of each other! (overall voltage)
I have some "honey do's" to take care of this weekend to butter the wife up () for another 2s 4000maH battery to match the one I have so Ill have 4s to run on the spartan next weekend at the lake but I'm gonna try to get a speed run, and a new video done too!

5. THe EVX wires thoes 2 imputs in serries internally, and the motors are wired in parallel. Just like normal truck.

When you wire loads in parallel its just wiring soucres in parallel, the voltage stays the same (16.8v cause the batts are wired in series internally before they go into the circut board) and the draw (amps) is double.

So because the MAXX chassis is designed for 2 2s batteries, Traxxas designed the EVX to wire in serries internally. IF you look at a CC MMM, it requires a external serries harness to run 2 batteries.

1, yes the esc does use some power but its internal resistance is verry low, 2, you have a BEC (BAttery eliminator circut) that draws some power off of a battery to run the reciver and servos at 6v.

Thats another reason there are 2 battery inputs. one is the BEC side, so before that gets wired in serries with the non-BEC battery, it goes into a constant output stepper i belive, which will input any volatage and put out a constant 6v that is pumped into the reciver and servos via the reciver cable of the ESC.

So to answer your last question, yes.

6. sweet goalie, yep I've only used 4s but i stuck with 4000mah lipo. At the time i didn't want long run times incase something overheated and i only have a 50W charger. I'm getting about 25min run time.

7. speed run today!!!!! first let me say that I was geared at 22/68 to start, before the tranny spin, now im at 18/68 and hitting 133*f motor temps, speed run today maxx(ed) out at 44mph, I think Im gonna try 20/86 since battery are cool, and motor temps are good!

8. Nice speed, well done I think that's the fastest i seen recorded.
I don't know whats better to go higher by two or four teeth with temps that low.

9. made a camera mount for the rear of the E Maxx, used my wife's old Kodak digital cam, lol kinda shaky but I dont know if its the mount or the cam!

10. Nice, thats pretty good for a DeWalt

11. Yeah I'm extremely pleased with the power plant now! and going back to unlocked diffs with 100k oil sure helps it turn much better, next I'm going to work on the shocks, I'm thinking about going with the RC raven dual rate springs I believe they are 3/7 ppi? and the rpm two stage shock pistons with the Purple pistons in the rear four shocks and RPM Green pistons in the front four shocks with 40wt. oil in all eight shocks. I'm shooting for the support but still a little softer, for better cornering!

12. cool indeed. Makes you think if a twin 12V dewalt is done properly, how good that would be running 4s per motor.

13. I agree trax! you guys have a good weekend I'm off to the lake should have some spartan videos when I get back, and a e maxx front mount video too

14. No, Twin dewalt done properally is 2x 18v Dewalt with 2x 6s ESC and 2x 6s lipo. That's enough power to snap CVDs in half.

15. heres a quick front bumper mount video ,This was a cool hill ,it was a rough cut road, it had big boulders and some huge rocks. the 2wd Pede( my nephews) couldn't make, the 4wd Pede( my brothers) finally made it, but the Maxx made it look easy!

16. Thats great. MY friend has a ECX Torment, which is like a low quality 2wd slash. He got brushless and was all excited that his was faster than mine. He still gets stuck on doggy doo

17. UPDATE..... the dewalt 14.4v motor is a total beast 20-20 minute full out abusive on/off road runs on 6s.......dosent show any sign of abuse, I actually thought I heard it ask " may a please have another"

18. Is that motor fan working out for you? I wish I could try mine out but it almost seems that I'm not meant to have one.

19. another big plus for this motor is you can slide out the brushes and lightly sand the carbon off the commutator with some fine grit paper, This makes a nice noticable improvement, but don't go wild with it.

20. M n M that fan seems to be doing a great job! after a hard 20 min run I can touch the motor with out pulling back , yeah its warm but you keep your hand on it...btw my temp gauge when kaput so Im back to the touch gauge, right now Im so pleased with the maxx, I do have the rpm true track rear arms and the two stage shock pistons on order from the lhs, and my rc raven dual rate springs came yesterday, after that Im good ....... till something breaks...hey M n M dont you have the gopro cam? what format is the videos in?

21. actually if you want to be a little safer try using some contact cleaner spray and a scotch brite pad, remove your pinion and chuck the motor shaft in a drill so you can spin it while you polish it! Im in the metal finishing field ( electroplating) and we use scotch brite pads all the time to clean copper and it will be less abrasive on the commutator

22. Originally Posted by goalieman3037
M n M that fan seems to be doing a great job! after a hard 20 min run I can touch the motor with out pulling back , yeah its warm but you keep your hand on it...btw my temp gauge when kaput so Im back to the touch gauge, right now Im so pleased with the maxx, I do have the rpm true track rear arms and the two stage shock pistons on order from the lhs, and my rc raven dual rate springs came yesterday, after that Im good ....... till something breaks...hey M n M dont you have the gopro cam? what format is the videos in?
Man I can't wait to get mine then. I've had some serious issues with this last order. I hope I'm the exception and not the rule.

Yep, I have the Hero 2 HD GoPro. I use 1280x960 at 48fps (setting R6 I believe). I feel it gives me a good mix between high quality and the ability to produce good slow motion shots. There are other settings recommended for "super slow motion" but to me they have a poor play back quality at normal speed.

Are you thinking about getting one?

23. yeah I was thinking about it.....lol... but i just saw the price....hehehehe I could build another truck for that much unles I buy the HD HERO Naked version thats a little more reasonable, I was asking about the format of the video because my old Kodak i used ( until my nephew decided a head on collision would be good for it...not... lol) videos uploaded much fast than the videos my wife takes for me with her new cannon, and I think its because of the file format of the video

24. cool about the scotch pads, i never thought of that, I was gonna get a gopro mostly for the bike fun, but decided on a new flm charger when its in stock.

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