What's the best neu on 6s in an e-revo ?
 

I'm going to order an mmm esc and a neu motor to run i my e-revo :) but i don't know witch one to choose ? i'm going to run it on 6s lipo ! Can the stock e-rovo driveline handle an 1521 motor ?

I would go with a 2.5D or a 1.5Y. I wouldn't trust the stock E-Revo to handle a 1521, I stripped a diff with a 1515 and there are people snapping U-Joints with V-Twins.

1515 2.5d (1650kv) is a good 6s motor, but it depends what you mean by "best".

+1 on the 1515 2.5d on 6S. I run it and it's a great combo. Tons of power without being TOO fast.

great choice of motor i have one forsale if your interested

what gearing would be good for that 1515 2.5d (1650kv) motor ? For hard bashing offroad ? oh and woud the 2200kv 1515 motor work on 6s ? The castle new mt combu uses there version of this motor right ? I was thinking that the 2200kv motor might be better for me because then i can run 6s for bashing and 4s for racing and get good preformance with both battery set-ups?

The 1515 1y (2200kv) can handle 6s, but only as a on pavement speed run machine. They get unruly on anything over 4s. 4s is ideal at 2200kv. I ran that in my e-revo and loved it. I have moved it to a 1/8 buggy now and it is just silly with power.

1515 2.5d is borderline on 6s IMO! I've been running it geared for 40MPH and it's just insane! In Order to give full throttle you better have a 1000' stretch so you can ease into it slowly. Even at 25-30 if I hit mine it flips over backwards! Running on 5s now and thats alot more tolerable, wheelies on command from a stop but otherwise much more controlable. Actually running the same gearing on 5s which on the calculator is only 33-34MPH yet it seems just as fast cause it's actually putting the power to the ground. I would recomend something below 1650kv on 6s to have something thats actually driveable.

but won't a motor with lower kv be stronger ? and be even harder to control ?

No and no.

A lower kv motor will be slower on any given voltage compared to a higher kv motor;

kv = rpms per volt.

I suggest you have a read of my Erevo FAQ and tutorials over at the idiot forum to refresh yourself with wonderful BL knowledge, then the answers to your questions will make more sense hopefully:

http://monster.traxxas.com/showthread.php?t=430233

As has been asked, what exactly are your intentions or desires with regards to your truck- speed machine, racer, basher?...

So a bl-motor with lower kv doesn't have more low-end tq ?hmm i've winden a lot of cd-motors for airplanes and the ones with lots of winding turns was alot stronger than the one's with less winds ?

I mostly bash my e-revo ! So the motor scould be made mostly for bashing ! and i whant it to run cool for a longtime like 20-40min's ! How big lipopacks do i need to get 20-40min's runtime and maby 45-50mph topspeed ?

with a 1515/2.5d and a quality 6s 5000 lipo pack expect run times of about 25 mins

It is true that lower kv motors will have more torque, but the difference is only noticeable when there is a big change in kv rating, rather than 1600kv vs 2200kv. It also has a lot to do with the size of the motors- a big fat 22xx series motor will be a lot stronger than a 15xx series, but then you dont spin the larger motors so fast as they use tall gearing to make their speed.

Outrunners that are used in planes make tons of torque, but they are a very different animal to inrunners, so the amount or size of the windings tends to be quite different- again, much more pronounced difference in torque vs speed really.

I'd say for your bashing purposes a 1600kv 1515 neu would be ideal- run it on 6s with appropriate gearing and it will last atleast half an hour with 6s lipos; thats the beauty of a higher voltage & lower kv setup = less current draw due to better efficiency.

As for which lipos- a pair of 3s 5000mah items is fine, or a pair of 6s 4000mah in parallel if you wanna go a bit nuts on the runtime. Nothing lower than 20-30c though for the 3s lipos, or 15-25c for the 6s lipos.

Am more than happy with a 2.5d on 6s.

is it impossible to make an effichent setup on 4s lipo ? in an e-revo ?

the 1515/1y works great on 4s. geared for 40+ its been one of the best set-ups I have used.

No 40mph is waaay to slow for me :) i whan't min 50mph !

Except for efficiency and a bit less heat I don't see any reason that 4S is not a viable option in the E-Revo. Just make sure your batteries (probably 4S - 8000mAh best) can push the higher amount amps required for the lower voltage setup.

My peak with an Eagle Tree with 6S and a 1515/2.5d in the e-revo was about 2200 Watts. That's about 100 Amps on 6S - means you'd be looking at about 150 Amps on 4S.

I find that even pushing the constant C rating on lipos the batteries get pretty warm, so for a 4S 8000mAh pack I would say something with a TRUE 20-25C rating at minimum.

maybe i scould put an 1521in there and gear it 22/54 ?

That motor would pull more amps, epecially if you geared it pretty tall for higher speeds- it may produce more torque, but it'll work the batteries even harder (unless my thinking is way off the mark).

I'd say stick to 4s lipo & the 1515 1y, just buy decent batteries with good specs- zippy blue bricks or some nice Enerland 25c items. If you could stretch to the newer Elite 35c lipos, you'd be happy as larry* with the results.

*English expression, not refering to larrydino.

"Your mom is a blue brick."
That was my sense of humour. Told you i have one.

The epicness of your fail is matched only by your lack of comical talent...


My mum looks more like an old leathery creature- too many years sunbathing I think....

Reminder: I have a Neu 1515/2.5d that I'll let go of. Either sell or trade for a Neu 1512/2.5d...

hm.. maby i'm crayzy but would it be possible to upgrade the driveline in an e-revo so it will handle an 1521 motor on 6s lipo? that would make my e-revo crazy fast and strong !!! Like 75mps topspeeds and backflipi'n wheelies !

Would a mmm handle an 1521 motor on 6s ?i'm going to use an ex fan and u-bec !!

Convert it to run 8mm axles (and center shafts), run RC-Monster hybrid diffs with Truggy diffs, and Tekno RC 17mm/8mm axle conversion should do it. 75 MPH top speed should be attainable with either 1/8th scale foams or HPI Phaltline tires and some serious gearing (Mod1/Revo gearing should suffice).

I would use a stock MMM, the external fan would definitely void the warranty and I'm not sure about the BEC. It should handle it just fine IMO, I'd ask Castle to be sure but I wouldn't worry.

What about 1515 1.5Y? Less amps, more runtime... Could this motor work fine on a 1/8MT with 6S?

I was going to buy this, but now I have to decide between 1.5Y & 2.5D....... I do not want to run toooo fast, and I do not know if my batts are capable to handle enough current (Zippy-H 5.000 20-30C). I believe the 1.5Y is perfect for me, what do you think?

tires will be your problem, if you use solid foams you will have a much easier time going that fast

1.5y on 6s is a great setup. Better than a 2.5d or 3d IMO.

1515 3D works great on 6S

The Y wind motors are more efficient than the Deltas, and since the 1.5Y isn't too much lower KV than the 2.5D IMO it would work very well.

if you had the same setup except for the motor and you tried running a 1515/1.5y and a 1515/2.5d I doubt you could tell the difference between the two

I am running a 1521/1y in my E-Revo on 6s LiPo and its waaay too fricken fast. I have to use bead locker wheels or it just rips the tires off. I am amazed at how well the truck takes the abuse. It still has the stock diffs but I did install a center diff which made a world of difference. So far I've done about 6 good hard bashes and nothing is broken; that even counts some bad jumps and summersalts. Oh the joy of watching those front tires swell up when I give it the beans.

I am thinking about trying the Losi Xcelorin\1300Kv to run on 6s. Then I can move my 1521/1y to another truck on 4 or 5s.

I think the 1100\kv 1515/2y would be a good choice also. On 6s it would have more then enough power and would get some very nice temps and run times.

I am running a Neu 1515/1.5y on 6s and it is very great. Awesome power, and stays very cool. It really depends on how you use it. You can't go wrong with the 1515/3d, 1515/1.5y, or the 1515/2.5d. They are all very good 6s motors.

I think you might be disappointed with a 1515/2y on 6s, it would be slow

Thanks for all your answers.

I use a 1515 3d on 6 & 8s and love it!.. For what it worth..

That's a lot of grunt, how well did the E-Revo handle it? :neutral:

It's great on 6s, 8s I brake things!, mainly axel shaft and the speeds are insane!..

The good news is the Neu loves it!, never gets above 140ish degrees MetalMan and I have temped it every time we go out and it's always the same Motor is 140, esc (MGM) is 120 ish.. :whistle: and my gearing is 52 / 24 for what it’s worth.. :oh: :gasp: and it’s polished! So that got to add another 5 hps (easy!) :intello: :lol::lol::lol:


http://i264.photobucket.com/albums/i...7/IMG_4101.jpg

That polish increases aerodynamics, shaves an easy second off of your 0-60 time :tongue: Sounds like a sweet setup, I'd prefer to put it in a better truck though. I've thrashed the crap out of my Losi Muggy and nothing in the drivetrain ever breaks.

:whistle: If that's the one I sold you a few month back I glad to hear it's working good for you!.. :yes: