8ight T conversion

I do not have an eagle tree system. I don't think that my 9XL is running fast enough to think that it is mislabeled. It's not as fast as my 8XL.

Believe me, this 1512 is mild. Really mild. Geared 14/46, I can pick the truck up off of the ground and it's barely ballooning the tires. I don't know what's up. I did run it on 5S for a couple of minutes and then I was performance similar to that of the 9XL on 4S.

Could it be that I got a bad motor? If I did, how would I tell. I mean, it's a motor. Either it's running or it isn't, right?

[Serum]

Weird.

The only thing that i can think of is the the Neu motors KV is unloaded or you have a mislabeled; like i said; a 1509 2600kv on 4S is quite a powerhouse. and i had several different feigao/wanderer winds.

I'm thinking that I may have inadvertently gotten the 1400kv model. The 2Y, I believe it is.

I am disappointed in the performance, but it is smooth and runs cool. I'm going to give it a chance in a race and see how it does in a crowd. I just need an appropriate controller. Perhaps, I should just try to gear it up. The prospect of sending it back to Neu to have it checked out is very unappealing to me right now. Maybe all of this luck I've been having lately is just fate trying to tell me something.

[BrianG]

Gearing up will help, but go too far and your ESC will start complaining...

Yeah, that's what worries me. I suppose I'll just have to send this motor off to Neu and let them check it out. In the mean time, I'm going to hunt around for a Lehner.

OK, I'm not going crazy. My eight year old got home and broke out his Monster GT. It's setup is that it's locked into first gear, running 14/49 gearing with a MM and 9XL on 4S lipo. His tires are 40 series Moabs. I have my 8ight T setup with the Neu 1512 1.5Y and MM geared 16/46 on 4S lipo. Since I can't count on a standing start, we started at a roll and drag raced down our street. He spanked me. Not bad, but it happened none the less. He got a kick out of it, but I didn't.

Something is definitely wrong. With the luck I've had with the Quark and all of the cogging I'm getting with the MM, I'm really starting to feel the need for a Lehner.

[BrianG]

It must be frustrating to get the "good stuff" and not have it perform as well as the entry-level stuff. Something has to account for these issues. To rule out the ESC being the cause of the lack of performance, have you tried that same Quark on the 9XL? If it works well, then the issue has to be with the motor. Or, you could try the MM with the Neu if you can get by the initial cogging - just to test.

[jhautz]

Something really seems wrong to me with all of this. I have 2 of the 1512/2.5D motors and they absolutely rip. On 5s they are silly fast and the torque and acceleration is way more than the tires can put to the ground. If I punched it from a rolling start it would instantly flip or break all 4 tires loose. I also have a 9xl and a 8xl. The power (acceleration and speed) is almost not distinguishable between the Neu 1512/2.5D and the 8xl. Its just that the Neu can run an entire 8000mah pack without overheating and the 8XL needs a break after 5 minutes. One of the 1512/2.5dD motors got my buggy up to 60+ MPH (gps verified) on 5s a couple weeks ago and it still had enough torque to completely smoke all 4 tires on pavement from any kind of a low speed throttle stab. I know the 1512/2.5d and the 1512/1.5Y are not the same motor, but they should be very similar.

There definitely sounds like there is something wrong. Mislabeled motor??? Bad Motor??? Bad wiring??? Try re-soldering the motor plugs on the motor and make sure you have a good connection. As Serum pointed out, with all of the trouble you are having lately it sounds to me like an Eagltree would be a very worth while investment for you. If the Neu is not delivering the power to the ground, then it should not be pulling the amps either. If it is pulling the amps and not delivering the power than you have another problem somewhere. You would easily be able to detect it with an eagletree.

Did you try swapping the 9xl back into the setup without changing anything else. Exact same setup except for the motor. If it kicks like it did before, then its the motor.

One more thought.... Are you sure you know what your doing??? All this "bad luck" just seems a little to convenient of an explanation. :005: (Kidding obviously)

Well, I can't test on my Quark because the replacement that they sent me blew up.

jhautz, I'm really beginning to doubt whether I know what I am doing. I know the esc is good. I swapped motors and all is well. I went to tear everything down on my setup again, and stripped the set screw on my pinion. I spent an hour getting that out and just got fed up. I packed everything up in boxes. I'm going to see our local boat builder tomorrow and see if he has anything that interests me.

I helped a friend of mine out with his boat. His system is going to be based on a Castle HV controller. I don't remember what it's called, but the thing had 10 gauge wires on it. He's also going to be running a Feigao 8XL. It appears that there won't be as much of a heat problem because of the water cooling. So far it seems like a lot less of a headache.

Just an update on my 1512 1.5Y.

I sent the motor out on June 5 and it was received by Neu on June 7, 2007.

I wasn't getting much information about the status of my motor, so I contacted the vendor yesterday where I got my motor and I got an email directly from Steve Neu this morning.

This is what he said,

FYI

We received the motor back here last Thursday--1 week ago--the claim that it has been 2 weeks is not correct.

The motor was tested and the kV and noload current are within spec for a 1512/1.5Y. The rotor was removed and checked along with the shaft--nothing was found to be wrong. Other than dirt in the motor it is just fine. The motor will be mailed out today. If the performance is not as expected than the likely problem is else where in the setup or the wrong spec motor was selected.

It is not really fair to accuse us of not taking care of our customers--we can and do respond to problems as fast as possible.

Steve Neu

The only thing that I can figure is that someone fibbed about the date that they received the motor. In any case, it appears that I chose the wrong motor for the job. It figures.

So, to make it short, according to my situation, the Neu 1512 1.5Y is NOT the right tool for the job if you are looking to push a truggy around. Obviously the 1.5Y is not as similar to the 2.5D as I thought it would be. There is only a 100kv difference, but there must be other differences as well. Of course, there's always the chance that I'm just a dum a$$.

I guess I'll be looking for another motor.

[Serum]

Not a very sportive chap that Steve Neu..

You thought it was there since the the 7Th of June, based on that you 'accused' them of not taking care of you. I hate this reversed psychology. Trying to make you feel guilty over a misunderstanding.

In case you haven't noticed, I had my share today.

[bdebde]

So AAngel,

You getting another neu? Or something else?

Serum,

As a point of fact, I wasn't mistaken. I confirmed via USPS that Neutronics had received my motor on June 7. Anyway, perhaps Steve N realized that he was mistaken (or misinformed) because he sent me another email that completely baffled me.

He said...

My best guess is that you need a motor with a higher Kv to get the power and speed you want. A 1900Kv motor is a little low for a 4S battery pack. To get to the best power range you should be turning 40K under load. A 1512/1Y or 1512/2D with Kv around 2500-2600 Kv would be a good bet.

If you want to swap for a different wind let me know.

Either we are completely off base with the equipment that we been running, or he hasn't spent much time running his motors in land vehicles.

It was nice of him to offer to give me another wind of motor, but I'm certainly not going to get into a 2500 to 2600kv motor for my truggy.

I guess I'll just ask for a 1512 2.5D, since others have had success with those. Perhaps there is more of a difference between the 1.5Y and 2.5D than just 100kv.

OK, I'm going to see what's up with Serum.

Serum, what's up with you? I didn't see anything.

bdebde, that is the question!!! It's a real shame (for me) that I've been having such problems with equipment that others are having such great success with.

All joking aside, I'm really starting to think that I just don't know what I'm doing; and all of this stuff is just too expensive to keep messing it up.

When my Compro gets back, I'll likely put that up for sale, since I couldn't get it to work right and MGM says that there's nothing wrong with it. I'll likely also sell the Quark. It runs well, but the only reason that I got it was to run the Neu motors.

I'd like to get into a Lehner. I don't know if I'll have better luck with it, but the experience with Neu has me in a state of indecision. On the one hand, I know that they build good stuff; but when I have trouble with it, I get (what I thought was) a condescending tone in response telling me that I got the wrong motor. You can almost say that Neu is telling me that I should not have expected Feigao XL level performance out of the Neu of a similar kv rating.

I would call that getting it from the horse's mouth.

Ah, I'm just being a bitter baby about this. I'm just dying to run my "hot" setup on the track and after over a month (between the troubles with the esc and the motor) I still haven't been able to do that.

[Serum]

I was out taking my bike for a spin.. took me some time..

Okay, that sounds more reasonable.. It's kind of odd to blame someone else for being misinformed, it's just a misunderstanding.

Good news that he is willing to get you another wind though. I didn't expect that to happen after reading the first post. also; would the difference in torque would be that drastic with Wye or Delta when they have the same KV? can you ask Steve what's up with that?