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Other › Serious Problem with Neu 1521 Motor
12-31-2008 03:22 AM  9 years agoPost 1
specialtydevice

rrVeteran

New Rochelle , ny- USA

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I am a huge fan of Steve Neu motors due to the quality and great power. One of my Helis I fly is the Trex 600E originally with a Neu 1515 1.5y motor for using 6s batteries only. I wanted more power and definately needed more than 4 minutes flight time, and after experimenting with every numbered tooth pinion I could find, I finally decided to goto a larger motor. I went with a Neu 1521 1.5y motor that was able to take 10s and 12s. I was totally satisfied with this motor until it failed in mid flight. After inspection I noticed the shaft broke in fight. I also noticedthat the 1521 motors come preshaved a flat spot on the shaft for locking on the little spot bolt that locks the pinion onto the shaft. But on the 1521 the shaft comes preshaved and is shaved 1/3 of the total shaft. I called Neu Motors in San Diego, CA and spoke to a shop guy and was told they use 3rd party shafts on the 1521 and they come preshaved. I told the guy it was shaved 1/3 of the way in and was too much as it weakens the shaft. I also have an Estratus with a Neu 1915 1.5y motor that didnt come with a predrilled shaft, all I had to do was to grind a slight spot where the pinion locks to THAT DOESNT WEAKEN THE SHAFT. On the 1515 motor I had originally on it also didnt come with a pre shaved shaft. So why does the 1521 come with the shaft predrilled and weakened so? I sent the 1521 in for repair and told them of the problem and they responded back with they dont believe it brokeat the shaved spot and they said it broke bacause of a crash and they refused to warranty it. WHATEVER. So I told them to charge me for the repair then, even though the motor was 2 weeks old. After 2 months i called them to checkon the repair status and they told me they were still waiting for parts, that 3rd party shaft I guessed. So I got tired of waiting so I bought another 1521 motor and low and behold it also came with a preshaved shaft 1/3 of the way in.!!

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12-31-2008 04:21 AM  9 years agoPost 2
Heli 770

rrProfessor

USA.

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The only shafts that were ground for a pinion gear set screw on a Neu motor that I know of was sold by Gohbee. Gohbee would buy shafts with the slots ground on them and send them to Neu Motors. Neu Motors would build the motors for Gohbee with there shafts. I don't think Gohbee is even selling the motors anymore.

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01-02-2009 02:44 AM  9 years agoPost 3
specialtydevice

rrVeteran

New Rochelle , ny- USA

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well, whatever 3rd party shafts they are, theyre used in Neu 1521 and they are preshaved 1/3 of the way in and they break in mid flight and NeuMotors are taking no responsibility for them, and not covering them under warrenty.

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01-02-2009 03:26 AM  9 years agoPost 4
Heli 770

rrProfessor

USA.

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I'm just wondering if the motors you've being getting are from what Gohbee had.

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01-02-2009 03:47 AM  9 years agoPost 5
Eric Giorgianto

rrApprentice

New Jersey

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SHAFTED !!!!!!
Sorry to hear about your problems, and hope you can work it out with them,but I'll tell you from past experience that I wouldn't buy a pack of gum from that guy or his company, and he has been like that since way back when he worked with that other brushless motor company,in a nutshell they sold me a motor and ESC, that did not work right out of the box,and I sent it back after crashing a brand new 700.00 sailplane,
and they did nothing,and after getting the motor and esc back,and sending it back to them 3 times, Mr Steve proceeded to inform me, that they knew the products to be defective,but needed to get rid of them
to make room for the upgraded versions, BTW these were not closeouts or
refurbished, these were full priced new motors and ESC's,since then I would never buy another one of their products, and I tell everyone I know not to buy from them either, also shafts bend in a crash, they don't break, if you want quality and good service you need to shop elsewhere in my opinion,anyway good luck,

Regards

Eric G

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01-07-2009 10:09 PM  9 years agoPost 6
specialtydevice

rrVeteran

New Rochelle , ny- USA

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NO RESPONSE, STEVE NEU???

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01-13-2009 11:34 PM  9 years agoPost 7
specialtydevice

rrVeteran

New Rochelle , ny- USA

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Oh, by the way... The second Neu 1521 motor I purchased, and I purchased it because those idiots at Neu Motors took 4 months to repair the other 1521 motor I sent in and I still dont have it back, just broke today at the shaft in mid flight, only 2 weeks old!! Only 5th flight!!!

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01-13-2009 11:42 PM  9 years agoPost 8
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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I understand the frustration BUT if you had so much trouble with the first 1521, why would you buy another???? Makes no sense to throw away good money again especially when you have not got the first one repaired correctly. Why not just find an alternative motor?

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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01-14-2009 12:19 AM  9 years agoPost 9
OICU812

rrMaster

Edson, Alberta, Canada

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This is odd, I gotta argree with Ron here.

...Once upon a time there were Nitros, flybars and frequency pins...

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01-14-2009 12:37 AM  9 years agoPost 10
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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This is odd, I gotta argree with Ron here
What is this world coming to???

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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01-14-2009 03:27 AM  9 years agoPost 11
kogibankole

rrKey Veteran

albuquerque/ibadan

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i also agree with Ron...

if im not blade bogging youll find me pack puffing

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01-14-2009 03:25 PM  9 years agoPost 12
sneu

rrApprentice

San Diego

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It is always hard to keep up with the shifting sands in the heli world. Shafts with flats were something people were telling us they had to have since using a Dremel to grind their own flat was too difficult. For the record we saw many more broken shafts from people grinding their own then we see from the pre ground versions.

So lets have a vote--flats or not--yes or no. We will do what is best.

Oh one more thing--this is not the best place to get a response from us as we don't visit this site much. Send us a e-mail if you have questions please. Here is a link to our contact information. http://www.neumotors.com/2008/Root/Site/Contact_us.html

Steve Neu

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01-14-2009 03:32 PM  9 years agoPost 13
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Flat spot with stronger shafts Maybe not 1/3 of the way through?

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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01-14-2009 04:38 PM  9 years agoPost 14
specialtydevice

rrVeteran

New Rochelle , ny- USA

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i did buy a replacement motor and it is a Scorpion 700 kv motor that flies with 10 cells. From my experience with other motors,nothing has the power of the Neu Motors. The Scorpion flies like a "Dog" with half the RPM and power. I also have a 1515 2.5D Neu Motor that has the power/RPM and thats what I use until I get the 1521 back. The 1515 only lasts 4 minutes with 6s and lasts 3 minutes less than the 1521 on 10s. Like I said earlier, I also an Estratus 90 size electric with a Neu 1915. NO PROBLEMS WITH ANY OTHER MOTOR BUT THE 1521 BECAUSE NEU PRESHAVES THE SHAFT 1/3 OF THE WAY ON THAT MOTOR ONLY! AND TO ANSWER STEVE NEUS QUESTION, YOU ONLY SHAVE A SLIGHT FLAT SPOT ON THE SHAFT AND DONT GO 1/3 IN OTHERWISE THE SHAFT GETS WEAKENED AND BREAKS IN FLIGHT!!! WHY DO YOU GO WITH A 1/3 IN PRESHAVED SHAFT ON THE 1521 AND DONT TOUCH THE SHAFTS ON OTHER MOTORS? IM NOW STUCK WITH 2 1521 MOTORS WITH BROKEN SHAFTS AND THAT LOOKS LIKE A WARRENTY ISSUE

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01-14-2009 04:42 PM  9 years agoPost 15
kogibankole

rrKey Veteran

albuquerque/ibadan

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hmm...the scorpion guys are going to jump on you..maybe you didnt use the right pinion, but I ca tell you that the scorpions put out great power. Check out some of Jag27's videos with the outrage/scorp combo and come back to edit your post .

if im not blade bogging youll find me pack puffing

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01-14-2009 04:43 PM  9 years agoPost 16
specialtydevice

rrVeteran

New Rochelle , ny- USA

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additional response to Steve Neu
If you so state people have problems grinding their own flat spots and to do it to help them, why doyou grind a flat spot in a 60,000 RPM motor with so much power 1/3of the way in? BECAUSE YOU DONT GRIND IT! YOU USE 3RD PARTY SHAFTS THAT ARE GRINDED TOO MUCH!!!

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01-14-2009 05:18 PM  9 years agoPost 17
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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The Scorpion flies like a "Dog" with half the RPM and power.
Which Scorpion motor (exactly) did you buy?

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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01-14-2009 06:00 PM  9 years agoPost 18
sneu

rrApprentice

San Diego

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Here is the shaft that has been used since June of last year. It has a flat but it is no where 1/3rd of the thickness.

Steve Neu

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01-14-2009 11:11 PM  9 years agoPost 19
QueeQueg

rrVeteran

West Texas

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A 5mm output shaft is asking for trouble with a big heli motor with or without a flat.

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01-14-2009 11:25 PM  9 years agoPost 20
specialtydevice

rrVeteran

New Rochelle , ny- USA

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thats not an accurate picture of the shaft used on the 1521, Mr Neu. My 1521 repair is coming tomorrow and if you guys used the same shaft I will post a picture of it. The second one broke today that i bought so i cant take a pictue of it as I sent it out for repair as well (2 week old motor)

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