Neu 1515/2.5D or 1512/1.5Y, 2.5D... which motor?

[BrianG]

hee hee. :)

I wonder why there is no 1Y. If you can extrapolate the progression of the kv ratings, a 1Y would have a kv rating of 2400, which would be close.

Now...on the 6S issue. I have an older 4S2P 6Ah pack that has a bad cell in it, so I do have at least 6 good 3Ah cells. I might wire them up in series and see what happens. The pack won't have much punch, but might give me an idea of what it will do.

As for my Neu motor, tomorrow will make a week since Neu received it. Of course, I'm still complaining, but I would have thought that the circumstances surrounding my having to send the motor back would have gotten my issue some sort of preferential treatment.

I sent Neu an email yesterday, and this is the response that I got...

Hi Anthony, received and checked your motor in for repair 6/7/09, turn around for repairs is between 1-2 weeks, will keep you informed of the repair process. Thanks Carol

With all of the trouble that I had with the Quark, I was hoping for better luck with the Neu; and after all of the good things that I heard about Neu, I was expecting something more than what I have seen so far. Perhaps I'm being unreasonable, but it's the way I feel.

I've been doing a lot of research on the Neu motors lately and I often find myself on some helicopter forum. It seems to be the same everywhere I go. Most are talking about how awesome the Neu motors perform and then there are some talking about the way that the shaft just slid out of the motor or the rear endbell popped off.

At this point, I do know one thing. I have had my issues with Castle over the past couple of months, with support not being what it used to be; but, I'll guarantee you that if I had called Castle with the same problem that I had with the Neu, Castle would have sent a new motor out PDQ.

At least I can say that I've gained some experience and I know who I want to continue to do business with. I know for a fact that I spent over $10,000 on this hobby last year, and I'm not too far behind this year. I've grown rather tired of having to wait to run my stuff because someone else screwed up. Heck, I've got a brand new Compro that's never been able to get all the way around my track, and MGM has had it longer than I have.

OK, down off of the soap box.

[jhautz]

Originally Posted by AAngel

Heck, I've got a brand new Compro that's never been able to get all the way around my track, and MGM has had it longer than I have.

And your complaining about Neus 1-2 week turn around. I dont know about your experience with waranty repairs, but 2 weeks sounds good to me. I had to get a TV fixed under waranty and it took them over 2 months to get it done.

Schedule an apointment with a repair person. Wait 2 weeks. Have them find the problem and order a part. 2 weeks. Have them try to install the part only to find that they ordered the wrong part. Have them order the correct part and schedule a new apointment. 2 weeks. Nobody shows up for the repair appointment. Call... Complain... Nobady cares.... Schedule an new apointment. 2 weeks. Finally fixed.

1-2 weeks seems like good service from what I am used to.

Just my $0.02...

zpb, since you have shown the most interest in the cap mod, I'll ask you. I realize that Frank's advise regarding the caps was, "the more the merrier," but just how many do you think will be enough?

The whole idea of having that separate box is neat and all that, but the length of the wire connecting the box to the esc has me a bit worried. I'm just wondering why I'm not seeing the same benefits that I did with the MM, when I added the caps. Maybe just soldering two additional caps directly to the pcb is the way to go.

Have you decided which motor it is that you want to go with? I'm thinking of trying a 1512 2600kv motor, but don't want to buy another 1512 right now. What I'd ultimately like to have is one 1515 1Y or 2.5D and one 1512. If I decide to go with the 1515 in the truck, I'll be looking to dump the 1.5Y in favor of the 2600kv model for my buggy, which has been relegated to parking lot racing duty.

[BrianG]

I can personally guarantee the 1512 2d will be more than enough for the buggy!

zpb, I don't have as much experience as Brian does, but I like to keep the rpms under 30,000 for a truck. Something between 25-30K has worked very well for me; but I base my judgments of success or failure on track performance.

Yes, I am complaining. Two weeks would be acceptable if I had gotten the motor and then something unforseen happened and I had to send it back in after I had the opportunity to really run it.

I got my motor brand spankin' new and right out of the box it had to be sent in. Like I said, if this had happened with a Castle product, they would have sent a new one out right away. That's what I'd call good customer service.

Even with the Quarks. A few people have had trouble with the recent units. I had to send two back in a row, but each time that I sent one in, total turn around time was a week.

BTW, sorry to hear about your television. You should have gotten it at Sears. LOL. My Sony gave me trouble after having had it a month and I had someone out the next day and they fixed it on site.

[jhautz]

Yea... It was a sony. Got it at the local "electronics giant" It was the manufactures warranty folks though. Problem was getting saturday appointments. I cant be here during the day on weekdays.

My wife just reminded me that I spent an extra $300 on the extended warranty. That may very well be why I got my repair done so quickly. My wife was like, "don't you remember how lousy the Sears person said that Sony support was?" So...there you go.

Sony is the MGM of televisions. LOL.

[bdebde]

I hate sony.

[jhautz]

Originally Posted by bdebde

I hate sony.

Me 2.



Now back to your regularly scheduled thread.....

zpb, please understand, I too have limited experince with the Neu motors. I can say that when I evaluate performance, I don't consider the heat factor. With the Feigao motors, the heat was troublesome, but not my main reason for going to the higher turn motors. The 7XL was just plain too much for the our track. The 8XL was better, but still too much. When I hit on the 9XL, everything came together for me. I was able to really work with the radio, without having to take too much care with the throttle and I was able to actually get to full throttle on our track. I posted a video in the brushless forum of my 8ight T with the 9XL running on 4S. If you haven't seen it, you should take a look. A Neu motor, of the same or similar kv rating, should surpass the performance of the 9XL by at least a bit.

I just don't want to give you advise that will leave you wanting more. For me, the 9XL was perfect at around 1800kv, so I'm figuring that the 1.5Y should be a bit better than the 9XL. That's why I went with what I did. Plus, the 1.5Y leaves a bit of room for going to 5S for better performance. All I have to do is swap battery packs.

I'm sure that you are aware of what happened with my Neu. It was just my suspicion, although I think that I am right, that I got a 2Y instead of a 1.5Y.

I will say that the motor ran very well. I liked it. I like the relatively mild setups, but the 2Y (I think) left even me wanting a bit more. If I had to make the decision in the 1512 line, I wouldn't go less than the 1.5Y, unless I was planning on going to 6S. In your situation, with the A123s and such, there are four motors that I'd be looking at. The 1512 1.5Y or 2.5d or the 1515 2.5d or 1Y.

In the 1512 line, there really isn't much difference in the kv ratings of the two motors, so I'd just get what was available. In the 1515 line, I'd go with the 2.5d for voltages similar to 4S or 5S lipo. If you are staying around 4S lipo voltage, I'd consider the either the 1Y or 2.5d. If I was buying this motor for myself, I'd so with the 2.5d for more voltage flexibility. On the other hand, I don't remember who it was, either BrianG or GlassDoctor, but one of them said that Mike gets better temps in his truck with the 1Y on 4S.

Decisions, decisions. I hate making the ones that cost lots of money.

[zeropointbug]

Originally Posted by AAngel

Decisions, decisions. I hate making the ones that cost lots of money.

hmm, so do I! ;)

If you didn't see my post up a bit, I just bought two 36v dewalt packs and I am going to make a 7s2p A123, so roughly 6s Lipo performance.

So now with the FET heatspreader clamp coming, and Quark coming tomorrow hopefully, and a nice cap bank, the plan is for it to handle the voltage I throw at it. I suspecting it should, as lipo has quite high initial voltage when fully charged, M1 cells don't, as soon as you take a little bit of current from them they will instantly come down to the nominal working voltage.

So it is a choice between the 1512 '3D' and the '2Y', 1700kv and 1400kv, respectively.

At least you have narrowed your choices down to two. My knee jerk reaction is to go with the 1400kv motor, but I like to stay on the conservative side. I'd also go with the 1400kv motor to be able to gear up rather than having to gear down on the 7S setup. On the other hand, if you go with the 1700 kv motor, you will get GREAT performance on the 7S pack and still be able to run packs with less voltage and still get good performance. From what I have seen, the 1400 kv motor doesn't even really wake up until you get to 5S voltage range. With the 1700kv motor, you'll get good performance running anything from 5S A123 on up.

I think that I just talked myself into the 1700kv motor.

[zeropointbug]

What I want from this whole setup is to have a touch more performance than my 7XL on 5s2p, along with great efficiency (of course...)

Can you give more dirty details on how your Neu (if you think it was the 2Y) performed on 5s lipo? How heavy was your truggy? What condition was the batt pack in, etc...

I'm thinking the 1512 3D on this voltage should give roughly the same performance as the 1515/1Y does on 4s lipo, maybe a little more.

"I think that I just talked myself into the 1700kv motor." You crack me up. :005:

Was Jhautz one that got caps from you AAngel?