Nosediving Neus

[Dafni]

Hey guys, just found out the other day that a direct drive conversion with a Neu motor requires a bit of throttle mid air to keep the nose up. Did you find the same?
Usually I use Lehners, they freewheel much smoother, and obviously the mid air controll is more similar to those of nitros.

Just curious if you found the same. Jumping wise, I like the Lehners (and even Feigaos) better.

Daf

[tom255]

I have experinced similar thing with feigao type motor. Ofcourse important that gear mesh is normal no any binding, motor bearings is ok, ESC dont have drag brake etc but one thing more, if spur and pinion not on one line car acting differently.
If pinions spisns anticlockwise i noticed this:

And also plastic spur felt smoother maybe because its quieter...

[jhautz]

Interesting observation Daf. I just switched from a Hacker B50 (which is also a free spinning motor like a Lehner) to a Neu in my buggy an started to notice the same thing. But, I didnt connect it to the motor being the issue. However, now that you say that it makes total sense. I may have to bring a free spinning motor and a neu with me to the track next time and test this theory.

[lutach]

I found that out a long time ago with my Aveox system. Some of my Aveox motor doesn't have a very strong cogging, but the lower turn one does.

[BrianG]

Maybe adjust the throttle trim ever so slightly so that there is a teeny tiny bit of throttle when in "neutral"?

[BL_RV0]

Originally Posted by BrianG

Maybe adjust the throttle trim ever so slightly so that there is a teeny tiny bit of throttle when in "neutral"?

Yeah, that's what I was going to suggest. It worked for me with my dual 9L E-maxx.
Dafni- What is the length of a Lehner 1950?

[BrianG]

Those Neus have a strong resistance to turning just sitting in my hand. I can imagine there would be some braking force unless some throttle was applied. Comes with the territory when you have a slotted stator I guess.

[Serum]

that's annoying. You can't get used to that.

And also plastic spur felt smoother maybe because its quieter

It's not said that silence means more efficient; remember, plastic is an acoustic absorber.

I don't understand your graphics; the only thing that could make a difference is the cg, it has nothing to do with binding, unless the motor (pinion) and the spur are not parallel.

[Serum]

the stator would act like a fly-wheel. perhaps a heavier pinion would help Daf.. LOL

[Getter Robo]

Originally Posted by BrianG

Those Neus have a strong resistance to turning just sitting in my hand. I can imagine there would be some braking force unless some throttle was applied. Comes with the territory when you have a slotted stator I guess.

The Plettenbergs got the same strong resistance and 4 poles and they nosedive if you brake, too.

[Serum]

you mean if you don't brake?

[Mozzy]

If it's nose diving, just hold the throttle on for that extra second to kick the front up so when you drop throttle it levels the car out midflight ready for the come down.

I've experienced the same issue with my Neu over moderately inclined jump faces in the Buggy and Truggy. The steeper the face, the less it's an issue. Of coarse my current ride, the Revo, wants to backflip instead of nosedive. Running a Neu vs. fiegao/wan./nem. is like automatically dialing in 3.5% of brake drag; barely noticeable on the ground but occasionally annoying in the air. I've learned to compensate by "blipping" the throttle at lip contact just as if I was on my motocross bike.

[crazyjr]

I think its the core design kind of acts like a drag brake, only lots more stronger than any brushed. I've had my G2R with a 1515/2.5d nearly do a front flip when i just let off the throttle in the air

[Serum]

it's nose diving, just hold the throttle on for that extra second to kick the front up so when you drop throttle it levels the car out midflight ready for the come down.

Daf knows what he is doing, trust me..