Neu's will go well over 60K rpms. Umm my 1521 1.5D is 1900KV. I'm running 12S on it.....do the RPM math ;)

you buy a used motor from me... come on here post your wonderful setup then when you run the motor over what its max rpm is and after you run it for more then 30 seconds in your paypal claim you want your money back......

you ran 1 run you had the carrier fail that would cause an abrupt shock on it and damage the bearings in the motor. i should not be responsible for you not running the motor within its specs. i ra the motor on 5s without any issues.

:whistle:

Ok, Jzemaxx I do have a question for you. Does your 1521 have the same motor mount spacing as a 1515?? That is the motor I originally wanted to run but I was under the impression that the 1521s had a different spacing for the mount?

The motor was never ran out of it's specs to start. As previously stated, the motor was already giving problems on 5S and with no load so that says something. I may have made the mistake to have intended to run it after seeing that happen, but I had no reason to think there was any problem with the motor.

there was nothing wrong with the motor when i sent it and your abuse on it should not make me responsible.

I cant help but wonder if the 30k rpm separated the magnet or the 60k rpm.... Hmmm:neutral:

Ok. This the last time I make a comment to you on this forum in my thread. At no time did I drag anyone's name or say don't deal with such and such as I think things should be dealt in there proper place. That is why I opened a "dispute", not a "claim" through Paypal as it is the proper thing when someone feels they have possibly been part of a bad transaction. With that said, by you coming on here and throwing "dirty laundry" for everyone to see I take it personal as I feel it makes me look bad whether true or not.

SOOOOO.............. You stated the motor was in excellent condition. You stated that it only had a "couple" of races on it AND with fans! You also stated that you were running it with fuel tubing around the wires to protect them from possible shorting. Well here is the funny thing. I found your thread in RCtech and you communicated with me on the 25th of Nov. Here is the post with your description:

http://www.rctech.net/forum/r-c-item...a-monster.html


Now how is it that I found a thread here on Monster:oops:

http://www.rc-monster.com/forum/showthread.php?t=16522

dated 12 days prior to the RCtech thread stating the motor had 3 races PLUS practice? How is it there is no pics of the fans or a fan mount you stated? Most importantly, why does the Monster thread show the motor wires with NO tubing? Why did you go through the headache of unsoldering whatever connectors you were using, put fuel tubing over the wires, and put new connectors and cover the entire wire with heat shrink?? What were you hiding????

Next time, don't be so quick to try to make someone look stupid when you are the one that ends up.........See you at Paypal and don't post on my thread!!

j,

Who knows but I will say this. I think we will all agree that a Neu is a better quality motor than a Mamba yes??

With that said, I have personally pushed AND measured several Mambas pushing the 58-62k range while in a car pushing 100 plus on my data logger. If they can take it, I am pretty sure the Neu would as well. Of course, there is always the token black sheep that slips through the QC cracks:lol:

i did that because i wanted to protect the wires thats why it was done. yes 3 race days thats a couple im sorry you want other people to pay for your mistakes there was a fan on the motor you can try to call me out but you trying to be a tough guy will get you no where. there was never a warrenty implied on the motor you made a pass your truggy fell apart that makes you responsible for it not me.

while on the cracked rotor topic I thought I would mention that I cracked the rotor on my velineon on 3s. I was doing donuts with tiny tires for a few minutes attempting to lay down some sweet black marks(i know its dumb...I dont do stupid stuff anymore) and while at 168F my rotor cracked after about 15-20 seconds of a WOT donut. Couldnt have been more than 38,000rpm.

If your asking about the bolt spacing for mounting, then yes they are the same. My 1527's are the same as well.

Thanks for the info!

Update: Still dealing with the motor issue. On a good note, I have spoken to Medusa and I will be getting a 80mm 1600kv hopefully soon to test out........

Personally to me it doesn't really seem like there was a problem with the motor when you got it. You said it did 71mph in 100ft without reporting any temp issues, so to me it sounds like the motor is good at that point. Then the center diff carrier fails and causes the center diff bearing to fail as well and also chew up the spur gear. That's going to put a lot of shock loads onto the motor, especially if it happened at high rpm. I wouldn't be surprised if the motor was damaged at that point. Even if it was a brand new motor you were using it could have been damaged then. It was only after that point that you noticed a problem with the motor, which makes me think there wasn't a problem before.
I'm sure if cheescake thought there was a problem with the motor he would just send it to neu, and not make it hard for him to sell anything else on a couple of different forums.

Should be an interesting car though once it's got a new/repaired motor in it, definatly needs a video.

This was a interesting thread to say the least. Sorry about the motor thing it sux I know....anyway about the above comment by Takedown, what and where are these "records" that we are talking about. I just want to do some research. BTW someone mentioned that foams were not allowed but produced higher speeds? Where do I get foams precut/trimmed true. I myself am after some high speeds as well and I am new to 1/8 scale brushess. Any schooling would be helpful. I will start a thread when I get all my shipments in, but we are working on putting together the order in the "brushless" thread.

We need more pics and vids when you get up and running. Please keep us posted on the progress.

BTW the reason I asked about the record was b/c this is the vid that got me into the 1/8 scale buggies for BL.

http://www.youtube.com/watch?v=GKctWzmIgVc
And it sure does not look like he's running 10's or 12's. Any info on this set-up would enlighten me.

Just wanted to say hello and wish you more luck on your project.

Have a good one,
Paul

Pat,

I understand where you are coming from. However, when I have a manufacturer telling me something else, I would have to assume he knows what he is telling me!! Regardless, I have gone ahead and sent the motor to Neu myself to get the final word. I just want to get it over and done with!!!

AND GET MY CAR RUNNING!!!!!!:lol:

Thanks Paul!! Ok, here goes..........

First, here are some links for "high speed records"

http://fastestrc.blogspot.com/

http://www.rc-isc.com/

Next, about the foams...... Everyone is trying to follow the ROSSA rules setup by the guys in the UK who came with them so everyone can have a standard to go by. For MT you can not use foams because they are not tall enough. I believe the class says the tires need to be at least 5.5 inches, not sure. When you surf the above sites, you will find the correct info.

Lastly, your inspiration is quite an ingenious system!! That buggy is running on 4S. HOWEVER.........................his trick is that he custom mounted a Savage 3 speed tranny to basically create an "overdrive" to the spur gear creating more rpm than if it were to be connected directly to the diff. Thus creating higher rpm and a higher top end. I definately take my hat off to that guy!! He was thinking WAYYYYYY out of the box!!

Good Luck!

Round 3
 

Well Guys,

They say a picture is worth a thousand words so I will share a few and I think you can sum it up:yipi::yipi::yipi:

Saturday delivery with USPS is a great thing!!

:party: :great: :great:

Well, a thousand words or so have already been spewed back and forth regarding the NEU motor. As mentioned earlier in this thread, I was the recipient of a used motor that didn't come as described. Luckily, the sender accepted it back and refunded my money. But... IMO, if you buy a motor used NEU, Lehner, Phase Plasma or whatever, assume it's been through the ringer and expect the worse. I think it's easier to just deal with NEU and the repair costs and call it a lesson learned. Let's keep up the positive info in these forums regardless of who started what.

Oh, and I'm going to test out my just-finished Muggy at Mills Pond park today. Give me a buzz if you wanna get some runs in with that big ole Medusa ya just got!

killajb,

That is pretty much the route I have taken!! Now, do you mean Mills Pond, Ft. Lauderdale?? I am in Miami if so!! However, I do not think the Medusa on 10S with foams will do so good on the track....

Lastly, your inspiration is quite an ingenious system!! That buggy is running on 4S. HOWEVER.........................his trick is that he custom mounted a Savage 3 speed tranny to basically create an "overdrive" to the spur gear creating more rpm than if it were to be connected directly to the diff. Thus creating higher rpm and a higher top end. I definitely take my hat off to that guy!! He was thinking WAYYYYYY out of the box!!

Good Luck![/QUOTE]

I like custom....is there a link to the build. I was thinking those lipos were at least two 3s...I mean those must be 8000 mah 2s if they are because they are quite meaty.

Anyway. I am in search of the right motor and very very very interested in your maiden voyage with the medusa. I have looked at the MMM combo and the neu 1512. Since you have experience with both I am really excited to get your feedback so I can complete my order. I am thinking the lower KV motors will be more versatile for my bashing application. I am thinking that the speed runs will be short lived for me if I go through TOO many parts. But still want to have some fun.

Thankyou very much for the link on the records. I will not be attempting just curious.

Hey can I get pre-cut foams for this baby somewhere??
I say pre cut because I cant true a foam for my life.

What's with the long rear shaft on the 80mm Medusa? Are all of them like that? Do u think it would be long enough to hook a driveshaft to it for direct drive?

Why? At 4 pole they would not be torquey enough to pull a truck around without any gear reduction except for the diffs.

I don't know, i know nothing about direct drive:lol:. Is it even possible without an outrunner?

No, definately too short to mount an outdrive.

Just how long is that little nubby? :lol:

Appears to be about 5mm or maybe 6mm long. Perhaps long enough to mount a coupler of some sort.

That is about right. I was actually thinking about mounting a plastic fan on it to aid in cooling since the wires come out on the side.

For those of who may have been wondering, I got my motor back from Neu today. As per the tech's notes, the stator had been shorted out. Now I understand why the "fuel tubing" was placed around the wires by the seller.............

I thought it had a separated magnet?

How's that big 'ole Medusa working out?

j,

That is what they originally told me the issue was when I described to them what happened. When I called Thurs to get an update, the receptionist told me it was on it's way. She told me the tech would write info on the same RMA sheet I sent it with. The tech wrote under my problem description the words "stator short". Still, everything was replaced on the motor except the endbell cap! I would have thought it would have been easier to pull one of the shelf!! I did notice that it did come with some extra wire protectors around the wires where they exit the endbell cover. Is this something new that Neu is doing??

So far, really well!! I have been only able to make 2 passes with it sonce the control board on my HV85 went bad. I am hoping to have it back before the New Year.
I am actually running it on 5S with a 50mm Medusa 3300kv in the meantime and this little motor laughs at the truck!:whip:

Yea,
They are putting them on all the new Neu motors.