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Old May 30, 2005, 10:20 AM
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flyingflipper's Avatar
Joined Sep 2004
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Ele Bee Motor & esc Overheat problem

Maidened my Ele Bee yesterday. This was my first "wing" and I'm very satisfied with the results. Easy build, nice looking appearance and fairly easy to fly.

After about 4 minutes of flight (mixed throttle settings) the motor quit. I was able to land OK. The esc was very warm but the motor was really hot! After a few minutes I was able to start the motor but I decided to quit for the day. I thought maybe there wasn’t enough cooling so I cut some air scoops into the cowling. Anyone have any ideas what’s happening?

Details:
1800 Mah 8 cell NIMH
20 Amp ZAGI Speed Controller/ ESC
Stock speed 400 motor.
Carbon prop (appears to be the same size and pitch as stock)
AUW 806g (28.5 oz)
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Old May 30, 2005, 12:38 PM
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Cape Town, South Africa
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air scoops should probably solve the problem, sounds like it was overheating.
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Old May 30, 2005, 01:12 PM
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Did you break in the motor?
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Old May 30, 2005, 01:50 PM
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Yes, I did. I break in all my motors. I forgot to mention that.
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Old May 30, 2005, 03:34 PM
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Carbon prop (appears to be the same size and pitch as stock)

Appears is not good enough you need to verify. If the pitch or length is to high it could be taxing the motor to much.
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Old May 30, 2005, 03:35 PM
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Flight #2:

With the new cut-outs in the cowling, the motor worked fine for the first 5 minutes or so with mixed throttle inputs. After that, the motor would start to lose but regain power but very briefly. I landed it immediately and checked the motor. It was hot but nots a bad as yesterday. If I pressed my finger on the motor, I still needed to release it immediately. After 5 minutes, it was still hot but I could press my finger on the motor for about 5 seconds before I had to release it.

Open to more ideas.......

The esc was warm but nit as bad as yesterday. The battery was also quite warm. By the way, the temperature was 72 degrees with a 7 mph wind.
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Old May 31, 2005, 11:43 AM
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Hong Kong
Joined Jun 2002
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Quote:
If I pressed my finger on the motor, I still needed to release it immediately. After 5 minutes, it was still hot but I could press my finger on the motor for about 5 seconds before I had to release it.
Because, your finger was cooked in the first time to touch it:-) That your finger can't feeling not much in the 2nd time.
Please check:
1. the prop size and pitch.
2. Have you make a air intake and outtake by cut though the canopy?

Ming Lou
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Old May 31, 2005, 09:32 PM
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Ming:

Thanks for the reply. The motor was still hot 5 minutes later - if my finger was cooked, I wouldn't feel it!

The prop I got in the kit from Atlanta Hobby was a 5 X 5 prop.

Check my photo at the beginning of the post. You can see the cut-outs in the front. The back is completely open. I noticed that the photo's of the Ele Bee's on your web site don't have the cut-out's.

Cliff at Atlanta Hobby said the motor will run hot but hot enough to stop running?

Thanks for your help!
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Old Jun 01, 2005, 05:56 AM
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Austria
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Hi guys ...

My EleBee have seen the stock motor for just two fly ... then I changed it !

I think is quite normal that after 5 minutes a direct drive 5x5 prop with 8cell is getting hot ... lot also depend of the outside temperature ...

I would suggest to replace the 400 motor with a 480 ... or even better go brushless !

My EleBee 200+Watt power (3S Lipo & Brushless) is far more funny then as it was stock !

In these days you can get cheap BL motor and BL ESC ... brushed and airplane is history !

e_lm_70

P.S: You forgot to mention that the EleBee is a great wing ...
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Old Jun 01, 2005, 06:47 AM
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e_lm_70:

I'm ready to go the brushless route. Please post your set-up or the set-up you think is best for the Ele Bee and please don't forget the prop!!

And yes. the Ele Bee is a great wing.......
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Old Jun 01, 2005, 07:55 AM
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Austria
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Quote:
Originally Posted by flyingflipper
e_lm_70:

I'm ready to go the brushless route. Please post your set-up or the set-up you think is best for the Ele Bee and please don't forget the prop!!

And yes. the Ele Bee is a great wing.......
My EleBee set up is:

HiMark 2825 2700 (I did used also 2815 2000) ... did cost around 40 Euro
Align 35 BL ESC ~ 50$

Battery

3S2P 1800 Lipo (costed 30$x2 , for a 3600mAh x 11.1v) (from www.flytosky.net ... now they cost some $ more then months ago)
or
Kokam 910 3S2P (more light, more power, but less capacity)
or
XCell LiIon 1400 3S2P
or
1800 LiIon from Notebook, in a 2S3P ... over 30min fly time
or
Etects 1200 2S4P ... close to 30 min fly time. ... not a bad choise for 25$x2 !

Propeller is different based on the 2S or 3S set up

I use a 6x3 or 5.5x4.5 even 5.5x5.5 in a 3S Lipo (only real propeller : APC or Graupner)
And a 6x4 , 6x5 for a 2S Lipo.


All around set up I will suggest
6x4 Propeller with 3S2P 1800 from flytosky with the 2815 motor

Most power / speed set up is
5.5x4.5 with Kokam 910 3S2P with the 2825 motor.

Some set up draw close to 30Amp with 11.1V ... this is the reason for me to use at least a 30AMP exc ... and will also deliver close to 300W in with a 6x3 propeller well over 22000RPM !


e_lm_70
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Old Jun 01, 2005, 08:07 AM
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Hong Kong
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e_lm_70

You must a very rich guy, all your setup for Ele-Bee cost $$$$$$!
You make me feel my wing is too cheap on the pricing.

Ming Lou
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Old Jun 01, 2005, 08:25 AM
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Austria
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Quote:
Originally Posted by Ming
e_lm_70

You must a very rich guy, all your setup for Ele-Bee cost $$$$$$!
You make me feel my wing is too cheap on the pricing.

Ming Lou
You forgot that I got also your great SU-29 almost for free as beta 2

BTW I'm not rich ... but thanks god even not poor ... 50$ in Austria is not a lot of money thanks to the Euro ... a dinner for two in a restorant can cost far more here ...

I have to say that I started with cheap RTF airplane .... just cost around 80$ ... but they fly crap and crash and destry so quickly -> waste of money

For fly decently it is needed a decent radio and a decent receiver ... this alone cost around 200$ for something quite simple like the Futaba FX18 !

On my EleBee only the 2 Servo are sticked IN ... the rest can be take out and use in a different airplane or even a car.

So 60$ for Lipo + 50$ ESC and 50$ Motor ... it doesn't sound a lot of money ... and it allow to fly over 12min fast and with all acrobatics possible ... with your EleBee wing.

For the Su-29 I had to buy a new motor ... since the 2815 is a little heavy and too many RPM for a big propeller needed ... but a part the servos ... it got powered by many shared componets .... so it cost me few additional $$ for have a 2nd almost fully different airplane ... but still BL finalized !


e_lm_70
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Old Jun 01, 2005, 08:53 AM
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e_lm_70: Thanks for the quick reply and the many options to choose from.

Ming - don't mess around with your price structure - I will be a loyal customer (plan to purchase another wing or plane) because your products offer great value!
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Old Sep 26, 2014, 11:29 AM
Get Airborne
Sweden, Skåne County, Hofterup
Joined May 2012
336 Posts
My new Windrider arrived.

Seems to be a weary nice wing.

When free time is available the Windrider will be built, motor and other things are already bought.
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