1521 vs. 1527
 

hi everyone,

I think i'm going to get a Neu motor for my brushless UeG-maxx project. I've narrowed it down to the 1521/1.5D (1900kv), or the 1527/1.5D (1500kv). I'm planning on running 6s, and was just wondering which would be the better option. Would I be right in saying that 6s would not be enough to run the 1527 to its potential?

I'm going for all out power and insanity :yipi:, so if anyone has advice on which motor would do the job better, please fell free to chime in

thanks in advance
jordan

check out my muggy im running 6s on a neu 1521/1y it did 57mph easy. check out the pics and the vid. i was think of try a 1527 in it glad i didnt the 1521 is plenty enough power the truck is crazy.

http://www.rc-monster.com/forum/show...t=10316&page=3

Yes, I would go with the 1521/1Y on 6S. I have since went to 5S.

I am running a 1521 1.5D on a 3905 emaxx on 6S its stupid, on 8S its super dumb and on 10S its worthless......choose wisely.

Yes, apparently higher voltage will quickly depreciate the value of your driving experience...

The 1521 will be plenty, unless you're a fan of broken drivetrain components.

How'd you know, isn't everyone a fan of stupid amounts of power :lol:

If i was to run a 1527/1D (2300kv) on 6s, would that provide enough voltage, or would the amp load start to heat up the ESC??

thanks
jordan

What kind of esc are your going to use?

hmmm... you know, i haven't put too much thought into that. At the moment it will be the MMM or the Quark SSB-mk03. Both seem pretty capable controllers from the specs that have been released to the public so far.

I doubt any of the quark esc's out at the moment will be able to handle a motor that size and kv on 6s. You could get lucky, but personally I'd try and get a bigger esc for that much power.
Not sure how my quark 125 compares to the new quarks, it does ok on 6s with a 1700kv 1515, though adding another 600kv and 30mm of motor is a big jump.
A guy at my track racing a truggy on 4s and plettenburg maxximum burnt out his SSB-mk03 during practice, but I'm not sure of the details of how it happened.

wow, burnt out on 4s and a maxximum :oh:

maybe i should let others try out that ESC before i make a desicion on it :tongue:. Well then, looks like the MMM... if its ever released... :whistle:

what 'bigger' controllers are there, are you saying something like the MGM 16024?

How would a plane ESC go, such as one of the Castle Phoenix's, upto 12s lipo!! What would the truck be lacking though? It wouldn't have brakes or reverse with a plane ESC would it?

I think I'd definately want to wait for the MMM before trying to fit a plane esc to my truck though...

jordan

Don't go with the 1527. I have a 1527/1.5Y, but I'm actually not going to use it yet because the 1521/1Y already provides a ton of power. One powerfull controller would be the MGM 22418.

How are you liking that 1527 Lutach... Did Mike order that for you?.. I'm looking for 2x 1527/2.5D.

I got it a while ago and haven't used it yet. The 1521 is already breaking stuff and I can't go with much more power. I already have a good stock of Universal Joints and I just need to get are some 43T Spiral Conical Gear, 10T Spiral Bevel Gear and Hard Steel Differential Gear Set, because I know they will go as soon as I get back to speed runs :lol:.

TWO!! :gasp: what are you going to be running those in?

How would a 1527/1D (2300kv) on 6s compare to that dual Pletty setup of hcr21, oh sorry, plettenbergs :wink: My drivetrain setup is pretty much the same to that, so i guess the weakest link would be the output shaft.

A 1515 will do you good, a 1521 will make you stock up of a few drive train parts and the 1527 might not be too fun if the drive train will not handle it, pls you will have to get a rock solid high AMP controller and some very, very good lipos to handle the kind of AMP the 1527/1D will pull. My 1521/1Y has pulled a max of 169A and the 1527/1D will go over that with no problem. This is the only reason why I still haven't put the 1527/1.5Y in my truck. I might go with one of my Aveox that is the same size as a Neu 1515 just to spare my drive train.

ahhh... hi AMP, so i guess that rules out the Phoenix ESC's. I think they're only rated upto 140 amp bursts (Phoenix-110) That MGM you linked to would do the job.

yes, the drivetrain would be the problem, especially on a maxx, i'm thinking the slipper and the input/output shafts would be the hardest hit. What parts are you breaking with the 1521 Lutach?

Are Flightpower cells the same as NeuEnergy cells, both Enerland??

Thanks for the input Lutach, really appreciate it!! :great:
jordan

So far I have gone through a couple spur gears and internal diff gears (spider gears). I will soon have to get diff ring and pinion. I have to see if Bomb-Proof Products still have center drive shafts for my truck and will also have to get more drive cups. If you get the 1527/1D, go with the MGM 22418 and the highest capacity 30C Enerland cells (Yes, Flightpower or NeuEnergy) and it would be nice to get them 2 packs in parallel. I think 4S will be a better choice for the 1527/1D, 5S will be insane and 6S will make your bank account go empty from buying parts for your truck :lol:.

what diffs are you running at the moment in your truck Lutach, please don't say 8 spiders :lol: Yeh, the drive cups would get pretty ripped up as well wouldn't they with that kind of torque.

Stepping down to 5s might also be an option if i was to go the 1527...

As if my bank account won't already be empty from even getting this setup!!! :rofl:

thanks alot
jordan

I had the Hot Bodies Buggy diffs in the truck, but I bought some aluminum diff case and I put the truggy diffs back in and no they are not the 8 gear spiders. My drive cups are a mess and I'm going to run a few more times before I change them.

If you guys ever build this buggy I have got to see the video of this wild and out of control ride........:surprised:

I can see how you think we're talking about a 1/8th buggy to put this much power in. But... er, its intended for a 1/10th E-maxx, or should i say UeG-maxx :oh: :whistle: :lol:

with the 1527/1D (2300kv) the theoretical motor rpms on 6s will be 51060. Is that too high? Will it lead to heating issues? I doubt it will even be able to reach max rpms without flipping or breaking something though... :yipi:

jordan

I'm happy with below 40K rpm and when I brought my truck from 6S down to 5S, the motor actually pulled less AMPs. When I tried the motor with 10S, it pulled 169A. I ran it for over 8 minutes with 10S and the ESC wasn't hot, but the motor got a little hot, but not too hot that it would burn my finger. I would choose one of the following for 6S:

1527/1.5D 1500Kv
1521/1Y 1577Kv

so im looking at ESC's that would be able to handle this setup, and the MGM 22418 will do the trick.

Any thoughts on the CC Hydra 240, upto 240 amps and 6s lipo? Would it work in a truck even though its a marine ESC?

http://www.castlecreations.com/products/hydra.html

What about the CC Phoenix-180, or on the Neu website, the Castle Creations Super 180 F5B controller. 180 amps constant and upto 6s lipo.

http://www.neumotors.com/20061222/Air_Controllers.html

I'm not too sure how these would work, as one is for marine, and one for planes. Has anyone had experience using these types of controllers on a truck? Would i lose brakes and reverse?

thanks
jordan

you'll have 0 or 100% brakes, and no reverse...