8ight T conversion

I shot him another email asking that very question. I explained that I got the 1.5Y assuming that the performance would be similar to that of the 2.5D with the defference in kv being negligible. I haven't gotten a response back yet.

I've been thinking about this since I got the first email. I know that I'm not completely crazy and I do know what a 1900kv motor running on 4S should behave like. I also know that glassdoctor was running a 1512 1.5Y with good results. The performance that I got was anemic.

After the little "misunderstanding" concering the date on which Neu received my motor, I'm wondering if there isn't just a bit of misinformation flying around on this whole issue, possibly from someone trying to cover their butt.

I really don't want to start making accusations or even inferences, but the first email that I got was rather bold when Neu had taken the position that they had not received the motor until June 14.

Actually, I don't care about what's going on. I just want my motor back, in whatever form. If I have to run it geared 18/44, then so be it.

I know that Steve Neu has popped up on other sites to help people out with problems that they're having and I do believe that he has his customers' best interest in mind. It just seems to be more of my luck in that I just can't seem to be able to enjoy the better things in RC. LOL

We'll see what happens. From what I understand, they are ready to ship me something. I'll just see what I get.

[waterdog49]

step away from the tuna!

fe conversions are just that... an educated guess

adjust and re-group...

Ron

[BrianG]

Originally Posted by AAngel

...It just seems to be more of my luck in that I just can't seem to be able to enjoy the better things in RC. LOL

It does seem that you are destined to have "issues" with anything related to R/C. Maybe you should get a job as an ESC tester. If you can't break it, no one can!

Seriously, I think you'll be happy once you get the proper motor - hopefully you'll get it soon.

Brian, that's the thing. The 1512 should have been the right motor. A few here have run these in trucks and I've been surfing the net and others have also run the 1512 in even heavier trucks with great success. What gets me is that they (Neu) are telling me that the motor is as it should be.

What am I missing?

[BrianG]

Well, were you running dual packs? Is it even remotely possible that you had them in parallel instead of series? Not trying to insult your intelligence, just trying to find a reasonable explanation. Assuming the motor is ok, the only factors that would make a motor run too slow would be a faulty/misprogrammed ESC or low battery voltage, and maybe the EPA settings on the transmitter.

Brian, believe me, when things go wrong, the first thing that I do is assume that I did something wrong and check everything. I went from the radio all the way through the esc programming; and I only run single packs. I think that dual packs are more of a headache than they're worth in a buggy/truggy. The kicker was that at the end of messing with the system, I just threw my 9XL back into the truck without changing anything and it was hauling butt.

I'm just sitting back and waiting. SNeu sounded like he was trying to get a motor off to me today, but I haven't heard back from him, so I'm hoping for tomorrow.

What's getting my goat right now is that I've been doing more research and I found several posts made by Steve Neu. In the emails that I got from him today, he's telling me that I need to up the kv to 2500 or 2600kv to get performance from the motor on 4S. That's over 36,000 rpms.

I can recall at least two posts wherein he's telling other people that the 2200kv 1515 ran great in maxxes, with what he called "silly" amounts of power; and in another post he's telling people that they should try not to exceed 30,000 rpms because losses start to increase and the motors will start to run hotter. These comments were made while discussing 1/8 scale conversions.

So, which is it? Am I supposed to go to the higher kv motor or am I supposed to stick with the lower kv motor. Of course, I know what I SHOULD have had with the 1512 1.5Y, but this contradictory information coming from the person that's supposed to know just kills me.

OK, I'm going to stop posting this stuff. People are going to start thinking that I'm crazy knocking a company like Neu motors.

[BrianG]

lol, you are understandably frustrated.

I would guess he is saying 30k rpm for the people who he knows are going to push it no matter what he says. A disclaimer or a "safety net" I guess. But, if he is talking to someone who actually sounds like they know what they are talking about, he can specify a rating closer to real-world values. We all pretty much know the 35000 rpm "golden rule" so anything around that value is ok.

Or, he could be taking the application into consideration. If someone is buying a motor specifically for speed runs, the motor will be running in the upper rpms much more often. But for track use, the motor will not be running at max speed nearly as long, so those high speed inefficiencies mean less and you can run higher rpms as a result.

It sounds like someone needs to sit back, relax, and have a cold beverage. :)

No more cold beverages for me. Not for a while. I got bombed this past Sunday on Strawberry flavored beer, of all things.

While trying to recover, I'm just going to sit back and see what happens.

[BrianG]

Ewww! I'm not a big fan of beer to begin with and to mix it with strawberry sounds downright gross! :020: :027:

It's actually pretty good. It went very well with the crawfish that we boiled up.

I LOVE beer...and wine too.

[Serum]

step away from the tuna!

fe conversions are just that... an educated guess

adjust and re-group...

Ron

? what's this about ?

[bdebde]

AAngel, perhaps a different rpm range is optimum when running a 1512 vs a 1515, as well as a different rpm range for a different application, thats why neu had said different things.

bdebde, I don't think so. I have exchanged PMs with a couple of people that are running the 1512, and the desired rpm ranges don't change.

I'm not going to try to make heads or tails of anything. I believe that I have a 1512 2.5d coming my way in the next couple of days. My truggy, since I put it on a diet, doesn't weigh much more than a buggy. The 1512 should do just fine on the track. All I should be sacrificing is a bit of torque and I know that there is a bunch of that to spare with the 1515, so the 1512 should be just fine.

We shall see.

[bdebde]

Guess i didn't word that right, I was just say that it could be SNeu's way of thinking, as you quoted him saying something different about a 1515, than what he told you about 1512 (2600 kv for 1512 in truggy, 2200kv for 1515 in maxxes).

To tell the truth, I'm just tired of messing with all of this. I hope that I didn't misquote anyone or mislead anyone. I'm just starting to doubt what I thought I knew. LOL

I'm really hoping that the motor will be here tomorrow, just so that I can see how it runs.