Kontronik Fun 600-17

OK, my interest is sparked. These motors can be had for a good price in the States. I've found the 600-17 without having to look too hard and it appears that it might be in line with a 1512 Neu motor, although it (Fun) is a two poler. I'm hoping that the MM will like this motor. From the looks of it, this may be a good alternative for a light truggy.

I would much prefer a 600-18 or 600-21, but can't find one that isn't included in a kit. If any one has a link to one in the States, please post it or PM it to me, please. I'm going to order one of these before the night is over.

I don't want to have to wait for a Lehner and I'm just disgusted with Neu/Quark right now.

[captain harlock]

icare-rc.com has them.
I would much prefer if Mike could carry them.
You can get the 17 and I guess the 15(?) motors from towerhobbies as well without being sold as a kit.

Also, I'll be getting my Kontronik Twist-55( similar to a Lehner 15 series) and I'm gonna use it with the Mamba Max, too. It's rotor is quite smaller than the 600's, though.

I just read through this thread again and have some questions.

First, isn't 350 -450mAh per minute kind of high on the current draw? Othello says that he was running on concrete, so if resistance goes up when running on dirt, then you can assume 450mAh consumption. If this is right, then you're only going to get around 18 to 20 minutes of runtime on an 8Ah pack. That isn't very good.

Even my Feigao will get me half an hour. What am I missing.

Another thing is that the rotors in my Feigaos look just like the rotor in the pic that was posted. Again, what am I missing?

What is it that makes these motors better than Feigaos?

I just need to know before I make another purchase that I'm going to regret.

[captain harlock]

I can't give any input to your questions. I haven't try a feigao in my whole life either, so giving comparisons would be difficult for me.

[othello]

@nativepaul
The video you are referring to does not show the performance of my actual setup therefore i didn't posted it here since i considered it offtopic. At this time i was using 1 year old gp3700s, a Genius 70 controller which was only capable of 700 Watts and an Graupner 600m 8 pole Motor.

This is a screenshot from the video


And here are the links to the video
medium resolution: http://www.braintrust.at/2007/ds/cro...deo_medium.mpg
high resolution:
http://www.braintrust.at/2007/ds/cro...ideo_large.wmv

@AAngel
You're right about my mah consumption. It's high. But i would not blame the motor for it, since i got similar readings with my 8 pole Graupner 600M. It mostly has something to do with the challenging sort of racetrack where i drive. The rather high wheight of my setup. The relative high KV motor. And of course my driving style. The tires i have mounted have a good bite even on dirt and are rather big for buggy tires. All that together sums up to 450mAh per minute on a dirt surface when pushing things to the limit.

On my maiden drive i only had 150mah per minute. Tyres had no grip. Differentials where not setup properly so all the motor power unloaded to the front tyres. At this time i only had Amp peaks of 50 Amp. As i tuned my setup Amps went higher and higher. My Actual setup can draw up to 120 Amps which is the limit of my batts and esc.

[Serum]

@aangel; i would say that would go hand in hand with drivestyle, it's not that this motor is less than halve as efficient as your current setup. What are the temps on the motor?

[bdebde]

He said 158 somewhere back in thread.

[othello]

As i log my motor temperature with my eagletree datalogger i just looked through some previous logs and this was the one with the highest temperature reading. actually 73,7 C (164.6 F) and not 70 C (158 F) as i stated previously.



you have to look at the gray curve. It startet with 42 (107.6 F) and while driving it rose. I had to make two short breaks as some guys came up with their dogs. These are the most critical moments as there is no airflow anymore. Therefore you can see the highest peak on my second break 73,7 C (164.66 F). As i started driving again the temperature sank back to 65 C (149 F).

Outside temperature was around 29 C (84 F).

[Serum]

Great info, thanks Othello.

[othello]

If you decide to buy this motor make sure you order the kontronik heatsink aswell. Part Number was already posted. And remember that mine also lies flat on my chassis plate so there is some heat transfer. After finishing driving you can feel the difference. The chassis plate is warm to the touch. But nothing like when i used my nitro motor.

[steve671]

http://helihobby.com/html/helicopter...ic_motors.html
600-18 in stock. A little bit more money but oh well.
I ordered one.

[Serum]

Lets hope they don't use the word segmented as a description of the 3 thick slices of the magnet..

[Patrick]

They look like they might be good for filling the gap between the feigao's and the neu's/lehner's.
Kept us posted whoever else gets one, I know you will though.

[captain harlock]

I say instead of getting the optional heatsink, the Mambo looks much better and quite purdy.
Serum, do you think these three thick slices is not a good idea for a segmented rotor?

My problem with the rotor is that it looks just like what is in the Feigaos. I don't see what the big deal is, but then, what do I know.

As for the current draw, it just dawned on me that the batteries that he was using were probably dropping voltage under load causing the amp draw to go up.

At $150, I'd be tempted to try one of these motors. At $200, the price is too close to that of a Lehner or Neu.