neu 1515 1y

[e revo maniac]

is there any difference between the black neu and the blue or just the yellow just making sure?

[Swatsn1per]

Where did you find a blue or yellow Neu? Mine is black, 1515/1Y/S

[e revo maniac]

haha blue or black sorry

um i no the tekno neu is blue so ya

[e revo maniac]

and sorry oh i just realized what i realized a while ago the blue neu is the tekno neu and the black is the real one but does anyone know whats the difference

[HoovHartid]

the blue ones were designed for use in a land vehicle...same as the green ones.

the black ones were designed for helicopters and airplanes...so they have holes in them to allow for airflow.

The green and blue ones sealed up the holes in the can to help reduce the amount of dirt and dust entering the motor on land. They also have larger bearings to help cope with the higher vibrations caused on land. They also added a flat spot on the shaft to assist in keeping the pinion locked in place.

Black = origional and soon TRX/Castle version and also soon HPI version.
Blue = Tekno
Green = Castle

[e revo maniac]

thanks now do you know when the tekno neu will be in stock again im going to contact them know

[mkrusedc]

There are more differences:

Castle Neu
-Casing closed
-Not carbon inside as the "real" Neu
-Wires comes out on the side, not in the back
-The motor shaft probably has a flat spot
-Larger Bearings Japan (Koyo - CNC grade, 100K RPM rated)
-Laminations M19 non-oriented magnetic steel Japan
-Magnets Same as Neu – China N38UH magnet
-Shaft material Stainless - USA
-Case T6061 – China
-US source polyimide (Kapton) insulated wire

The Tekno RC Edition Neu Motors feature:
Larger 5x13x4mm bearings front and back
Sealed motor can
Rear end bell is safely secured by Neu's latest design
Flat spot along length of shaft

[e revo maniac]

But Doesnt The Transmission Slot Cover The Holes In The Real Neu Can

[bigfol]

In the front it covers a few holes at the back of the motor it has a lot of holes where dust can get in.

[e revo maniac]

so should i wait for the tekno neu or just get the regular neu but i wouldnt really like getting dust and dirt into a 250 motor u kno

[deepsouth]

Tekno Neu.

[HoovHartid]

I have seen both the tekno and the origional neu run side by side. Both were 1515/1y. Both performed the same. If it were me....I'd go for the Castle one if you can wait.
It will be cheaper and perform the same.

[mkrusedc]

Sent PM. Good luck.

[Traxxas Addict]

Not trying to hijack the thread but what gearing would be good for a 1515/1y?

[HoovHartid]

Not trying to hijack the thread but what gearing would be good for a 1515/1y?

on how many cells?

[Traxxas Addict]

4s and 6s

Right now I'll be running 4s but will eventually go to 6s.

[HoovHartid]

4s and 6s

Right now I'll be running 4s but will eventually go to 6s.

I always use this page;
http://www.scriptasylum.com/rc_speed/_top_speed.html

On 4s using 62/24 will yield about 40mph;

Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.8333333333333332
Other Ratio: 1
Spur Tooth Count: 62
Pinion Tooth Count: 24
Total Voltage: 14.8
Motor KV: 2200
Tire Diameter (inches): 5.9
Tire Ballooning (inches): 0.1
Motor Current Draw: 110
Motor coil Ω: 0.006
Spur/Pinion Ratio: 2.58 : 1
Total Ratio: 13.4797 : 1
Tire Circumference (inches): 19.16 inches (486.76 mm)
Total Motor Speed: 31108 RPM
Vehicle Speed: 41.88 mph (67.27 km/h)
Estimated Adjusted Speed: 40 mph (64 km/h) - 5% loss
Effective KV Value: 2101.89
KT constant: 0.61 oz-in/A
Motor Torque: 0.35 ft-lbs
Final Torque: 4.75 ft-lbs
Final Power: 1628 watts (2.2 HP)

Same gearing on 6s will get you to almose 60mph;

Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.8333333333333332
Other Ratio: 1
Spur Tooth Count: 62
Pinion Tooth Count: 24
Total Voltage: 22.2
Motor KV: 2200
Tire Diameter (inches): 5.9
Tire Ballooning (inches): 0.1
Motor Current Draw: 110
Motor coil Ω: 0.006
Spur/Pinion Ratio: 2.58 : 1
Total Ratio: 13.4797 : 1
Tire Circumference (inches): 19.16 inches (486.76 mm)
Total Motor Speed: 47388 RPM
Vehicle Speed: 63.8 mph (102.48 km/h)
Estimated Adjusted Speed: 58 mph (94 km/h) - 9% loss
Effective KV Value: 2134.59
KT constant: 0.61 oz-in/A
Motor Torque: 0.35 ft-lbs
Final Torque: 4.75 ft-lbs
Final Power: 2442 watts (3.3 HP)

[Traxxas Addict]

Thanks Hoov, guess I need to go and order some new spurs and pinions.

I don't think 65/16 is going to cut it.

[HoovHartid]

Thanks Hoov, guess I need to go and order some new spurs and pinions.

I don't think 65/16 is going to cut it.

If I had it to do all over again, I'd get a 22t pinion and all the spurs. The 68,65,62 and the jato 58,56,54t. The spurs are all $3, while the pinions cost $12.

[Traxxas Addict]

If I had it to do all over again, I'd get a 22t pinion and all the spurs. The 68,65,62 and the jato 58,56,54t. The spurs are all $3, while the pinions cost $12.

So Are you running the 62/24? That's a 2.583 ratio so with a 22T pinion you would go 56T spur? What kind of temps are you experiencing?

[HoovHartid]

My temps were never really an issue..unless I did something stupid (54/24 on 6s heehee!) But even then, they were fine for about 15 minutes or so.

I actually have more fun geared a bit lower now. I can use more of the throttle range.

I will say this tho, The temps are better on 6s geared to about 48mph then they are on 4s geared to 41mph.

[asheck]

The temps are better on 6s geared to about 48mph then they are on 4s geared to 41mph.

Do either have any issue of heat?I'm betting as long as your batteries are capable,the system is capable of 50 on 4s , bashing, no problem. BTW in your calculations the ballooning is way off.At 50 mph Talons are well over 7 inches tall.When you figure that in it greatly effects your gearing at those speeds.EX
Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.8333333333333332
Other Ratio: 1
Spur Tooth Count: 58
Pinion Tooth Count: 24
Total Voltage: 14.8
Motor KV: 2000
Tire Diameter (inches): 5.9
Tire Ballooning (inches): 0.1
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.42 : 1
Total Ratio: 12.61004 : 1
Tire Circumference (inches): 19.16 inches (486.76 mm)
Total Motor Speed: 29600 RPM
Vehicle Speed: 42.6 mph (68.43 km/h)
Estimated Adjusted Speed: 40 mph (65 km/h) - 6% loss
Effective KV Value: 2000
KT constant: 0.68 oz-in/A
When I input my setup using .1 for 4s It says I'm at 40.But I gpsed at 44.7 Now take it to .5 ballooning Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.8333333333333332
Other Ratio: 1
Spur Tooth Count: 58
Pinion Tooth Count: 24
Total Voltage: 14.8
Motor KV: 2000
Tire Diameter (inches): 5.9
Tire Ballooning (inches): 0.5
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.42 : 1
Total Ratio: 12.61004 : 1
Tire Circumference (inches): 21.68 inches (550.6 mm)
Total Motor Speed: 29600 RPM
Vehicle Speed: 48.18 mph (77.4 km/h)
Estimated Adjusted Speed: 45 mph (72 km/h) - 6% loss
Effective KV Value: 2000
KT constant: 0.68 oz-in/A
and it's pretty much perfect.

[HoovHartid]

Who said I was using talons?





but to answer your question...

no, heat is not an issue. But my motor averages about 120-130F on 6s geared to 48 and about 160-170F geared to 41 on 4s..(using .1 ballooning on the calc)

I tape all of my tires so that ballooning is at a minimum and control is at a maximum. I even boiled my talons off the rims, taped them and reglued them. (but I recommend baking instead)

But getting back to the heat, I am well within the safe range, but I shoot for efficency. You know as well as I, that more heat you generate, the more power you are losing.

Now, I can still run longer using my 4s 8000's then my 6s 4300's even with the power/heat loss...but I prefer to keep my electronics as cool as possible. .....just my preference, not trying to sway anyone .

[asheck]

Who said I was using talons?

Touche,but weren't you trying to help Traxxas Addict figure gearing? I assume Talons unless specifically specified differently.So for you those might be accurate,but for most it would be off. I wonder for you if the 41 is just to low.Not putting enough load on the motor causing it to be out of it's most efficient range.Before the dang MMM you could say motor hot,esc not,gear up.But I have yet to get a heat reading over 115 on the MMM,so that becomes hard to go by.

[_paralyzed_]

There are some untruths and misconceptions about the neus stated above.
The tekno neus are genuine top of the line neu motors, just repackaged. It is an actual neu. No different inside than the black neu.

The cc neus are still great, but not the genuine article.

[Traxxas Addict]

I too am not using Talons. I have Badlands which are taped and I also have a set of Crime Fighters which are not. They balloon like nobody's business so I'm going to bake them and tape them proper.

Thanks for the input on pinions and spurs. Think I'll order a couple of Pinions (24 & 22) and then the rest of the spurs. So far I have 68, 65, 60 (Robinson Racing Steel) & 58.

The 60T Robinson ate my 17T pinion by the way. Bad crash + Heavy Throttle = Mashed Teeth!

[sadclown]

stick with the stock plastic spurs instead of metal, the metal ones will only cause problems...

[HoovHartid]

Touche,but weren't you trying to help Traxxas Addict figure gearing? I assume Talons unless specifically specified differently.So for you those might be accurate,but for most it would be off. I wonder for you if the 41 is just to low.Not putting enough load on the motor causing it to be out of it's most efficient range.Before the dang MMM you could say motor hot,esc not,gear up.But I have yet to get a heat reading over 115 on the MMM,so that becomes hard to go by.

Yes, you are correct. I was trying to gelp Traxxas Addict. I never really mess with the ballooning too much in the calc, nor do I ever check to see how fast my truck is really going--(i just got a GPS, but have not used it yet)...I mainly use it (the calc) as a rough reference point when changing my gearing.

I mostly pay attension to my temperatures. I thought the same thing about gearing up with the 4s, but it actually caused the motor to get hotter...quicker. I notice a very close relation between Reduction Ratio's and heat generated. The higher the ratio the less heat I generally see.....to a point of course. Also I have noticed a close relation between rotating mass and heat as well. The heavier the tire, the more heat my Revo generates...