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Other › Serious Problem with Neu 1521 Motor
01-17-2009 08:32 PM  9 years agoPost 61
specialtydevice

rrVeteran

New Rochelle , ny- USA

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Kontroniks is a German company. I had a Powerjazz go out and i sent it to GreatPlanes as directed by the distributor which i think was ReadyHeli. Instead of doing a "Neu" and giving me excuses with no questions asked they sent me a brand new one in the box a week later. I wonder if the price sticker of $450 had anything to do with it. And about the 4025 Scorpion motor feedback, if its for 500-550 blades like a Trex 500, then why is it 890 KV for using 10s? Theres no way youcan fit 10s batterries on a Trex 500! If its such a quality motor then why is it so cheap? I was told by some other pilots that Scorpions arent longlived motors

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01-17-2009 10:15 PM  9 years agoPost 62
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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And about the 4025 Scorpion motor feedback, if its for 500-550 blades like a Trex 500, then why is it 890 KV for using 10s? Theres no way youcan fit 10s batterries on a Trex 500! If its such a quality motor then why is it so cheap? I was told by some other pilots that Scorpions arent longlived motors
Obviously you have not done your homework. The Trex 500 swings 425mm blades and the gear ratio of the heli determines what motor KV you need. For a Trex 600, use the 4035 630 KV and pinion up! (17 or 18 tooth for you 3D guys) What you have been told is not indicative of my experiences at all.......Ron

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

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01-18-2009 03:36 AM  9 years agoPost 63
kenneysme

rrApprentice

blgs. mt.

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Specialtydevice:
Your right those shafts should not be breaking ,hovering,those align motors will even run along time ,with just hovering & some forward flight.
Was wondering if your shafts broke above or below the bearing?
Thanks
Helicsr:
The phoenix hv 110 [castle]also has a soft soft start,tail wont even wiggle when your spooling up.

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01-18-2009 09:21 AM  9 years agoPost 64
OICU812

rrMaster

Edson, Alberta, Canada

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And about the 4025 Scorpion motor feedback, if its for 500-550 blades like a Trex 500, then why is it 890 KV for using 10s? Theres no way youcan fit 10s batterries on a Trex 500! If its such a quality motor then why is it so cheap? I was told by some other pilots that Scorpions arent longlived motors
The appropriate suze for a T-rex 500 is a 3026 series, either the 1400 or 1600kv motor. Also for a bladed machine in the 500-550mm main blade category the 4020 series is actually the class so not so sure who may be telling you these clases of the Scorpion motors. As Ron stated the proper series in Scorpion motors for the 600mm bladed helis is the 4035 series, "not" the 4025 series, the 4025 can do it, but there is a big jump on the 4035 series indeed, they are by no means a dog.....The only case where the 4025-890 has proved to be good on a 600mm machine is in the case of using 8S lipo bricks. Also if you review the threads on Scorpion motors most 95% plus of the people who are having any issues are with bearings and mostly because they are not oiling the bearings as it specifically states in the ads even at the vendors who sell them. Always do your R&D prior to posting such things, cheers.

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

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01-18-2009 02:40 PM  9 years agoPost 65
specialtydevice

rrVeteran

New Rochelle , ny- USA

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the shaft on the 1521s Neu Motor always broke, and on both exactly the same spot, above the bearing right below the pinion just exactly where the shaved spot ended.

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01-18-2009 02:45 PM  9 years agoPost 66
specialtydevice

rrVeteran

New Rochelle , ny- USA

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and youre exactly correct, OICU812. Laughing still must be on something talking about a Trex 500 pulls 425mm blades. Uhhh, thats what the model number Align gave their helis mean... Trex 450 close to 450mm blades, Trex 500 close to 500mm blades, Trex 600 with 600mm blades, Trex 700 close to 700mm blades. TRY TO THINK BEFORE POSTING LAUGHS-A-LOT (from Dances With Wolves)

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01-18-2009 03:04 PM  9 years agoPost 67
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Laughing still must be on something talking about a Trex 500 pulls 425mm blades. Uhhh, thats what the model number Align gave their helis mean... Trex 450 close to 450mm blades, Trex 500 close to 500mm blades, Trex 600 with 600mm blades, Trex 700 close to 700mm blades. TRY TO THINK BEFORE POSTING LAUGHS-A-LOT (from Dances With Wolves)
This is exactly why people get misled: Specialdevice, you simply are wrong and you really need to do some research before you post incorrect facts mixed in with skewed opinions These are the FACTS:
(1) The Trex 450 swings 325mm blades (I have owned Three of them) Here is the PROOF:
http://www.helidirect.com/product_i...roducts_id=3179
(2) The Trex 500 Swings 425mm blades (I have flown one and it is the same size a the MSH Protos I owned) Here is the PROOF:
http://www.espritmodel.com/index.as...ROD&ProdID=6879
(3) The Trex 600 swings 600mm blades and the APPROPRIATE motor for this heli on 10s is the 4035 series of motors, I owned Two of them).
(4) The Trex 700 swings 700mm blades and I use a 4035-500kv on 12s in mine now
Obviously you do not know much about Align helis Kinda funny since you have one.....well that still remains to be seen.......Ron

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

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01-18-2009 11:15 PM  9 years agoPost 68
specialtydevice

rrVeteran

New Rochelle , ny- USA

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Oh sorry, brainfart about the size blades on the 450 and 500 size helis. I knew nothing about Scorpions so what I did was call up Espritmodels.com and spoke to a tech guy and he was the one that sold me the 4025 and he said it would be good on 10s. I flew to 600E today with the Neu 1521 on 10s and 12s and I got 7 minutes flight time and even almost 8 minutes. The new shaft I received from Neu, that charged me $80 on top of $260 for the motor, performed great and the balistic power I got with all the hard 3D I do held up with no problems. Now flight time is just like a nitro with double the power and almost impossible to bog down like nitro having to watch your collective management. Im happy with this Neu motor now but think I was overcharged and doubt there is any electric motor that comes close to this setup with the Powerjazz ESC

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01-19-2009 01:35 AM  9 years agoPost 69
kenneysme

rrApprentice

blgs. mt.

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SD,thats where mine broke also.
Sure glad you started this thread,
Ive been very impressed with the power of the 1515,absolutely will not bog with agood battery & dont get hot,& after 4 to 4.5 minutes im ready to land due to mental fatuige anyway. After approx. 50 flights the top bearing started egging out the housing,sent it in ,they covered it so im still very happy.NOW i brake a shaft[sent it in 2 wks ago]and after reading your interesting thread here i am hoping this setup is still best overall power house system on 6s.Will let you know how my shaft turns out.

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01-19-2009 02:23 AM  9 years agoPost 70
specialtydevice

rrVeteran

New Rochelle , ny- USA

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what setup did you have with the 1515? They charged me $80 to replace my broken shaft and owning other Neu motors I am able to compare it to the other shafts and I am able to see that it was a totally different shaft that came on my 1521. Thats why Im so upset. Neu will tell you that the shaft is not covered under warrenty and they went on to say that it broke due to a crash to cover their butts and justify charging me. Let me know if you get charged for the broken shaft. My 1515 shaft came untouched and all i had to do was grind a slight flat spot with the dremmel. Since you sent it in 2 weeks ago they definately have it and you can call them to check the status.

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01-19-2009 03:19 AM  9 years agoPost 71
kenneysme

rrApprentice

blgs. mt.

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Setup:
10or11tooth[either works ]
evo5000ma 25c [batts][flight power]
110 castle esc[maybe overkill]
specktrum
3-fut-9252 servos
401 gyro&servo
600blades[G5 maverick Proz]
100-90-85-90-100 tcs
Emailed them friday,let you know when i here something
Mr.NEU:
With the long shaft on the 1515 ,couldnt a carrier bearing assembly be adapted to the top of the shaft to give torque support,theres room on a 600e for such????
Thanks

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01-19-2009 05:00 AM  9 years agoPost 72
specialtydevice

rrVeteran

New Rochelle , ny- USA

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the 110 amp ESC is definately not overkill, better to be safe than sorry. Neu recommends an 85 amp Castle (because they push Castle) ESC and thats exactly what I initially went with to pair with the 1515 motor, believing what Neus website said to use. It worked fine with a 10 tooth pinion. but when i went up to a 13 tooth pinion experimenting with different headspeeds the 85 Amp ESC burned up in a green smoke on the first flight. Thanks alot Neu! $200 down the drain! Spent $440 on a Powerjazz (120 amps), which is what I shouldve done in the first place! I shouldve listened to experienced pilots who told me to go Kontroniks instead of listening to product sales people. Its us the pilots who field test the equipment and not the manufacturers who push their products. Castle is a distibutor of Neu and thats what Neu is pushing. Why do you think Mr Neu logs on here and gets feed back from us? You would think he has an R and D department but that would cost money. If he had a good R and D department he wouldnt have on his website recommended a Castle 85 amp ESC to go with the 1515 motor.

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01-19-2009 05:03 AM  9 years agoPost 73
specialtydevice

rrVeteran

New Rochelle , ny- USA

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FYI Kontroniks is the best ESC made. You pay the extra money for their ESCs and it helps pay for the R and D.

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01-21-2009 11:41 PM  9 years agoPost 74
specialtydevice

rrVeteran

New Rochelle , ny- USA

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here is the picture of the SECOND broken 1521 shaft
http://www.runryder.com/clipboard.h...67/DSC02002.jpg

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01-22-2009 01:24 AM  9 years agoPost 75
Quandumphone

rrApprentice

Yuma, AZ

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Looks like crash damage to me.

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01-22-2009 01:31 AM  9 years agoPost 76
QueeQueg

rrVeteran

West Texas

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Looks like fretting to me you can see the discoloring like the pictures posted earlier.

That's what my 5mm scorpion looked like too.

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01-22-2009 02:15 PM  9 years agoPost 77
specialtydevice

rrVeteran

New Rochelle , ny- USA

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Fretting from a 2 week old motor? if it was crashed then why is rest of motor perfect

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01-22-2009 02:18 PM  9 years agoPost 78
specialtydevice

rrVeteran

New Rochelle , ny- USA

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looks like the shaft perfectly broke right where the shaved is. I think Queequeg and Quantumphone work for Neu

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01-22-2009 02:25 PM  9 years agoPost 79
QueeQueg

rrVeteran

West Texas

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my scorpion 5mm shaft did it in about 5 flights.

it was a perfectly square snap like that and was discolored also. almost like it was hot before it gave.

i have no idea what the cause of fretting is other than high stress on cheap metal or brittle metal or improper material for the job maybe too small a diameter for the amount of power

i wonder if the shaft flexes, heats up and then weakens.

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01-22-2009 02:27 PM  9 years agoPost 80
QueeQueg

rrVeteran

West Texas

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I think Queequeg and Quantumphone work for Neu
You're a moron you deserve to get the shaft.

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