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  1. #1
    vertical grimmace's Avatar
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    Little Satan Electric

    I have a mad desire to get some small combat designs going. Mainly to try to generate some interest in flying some CL and combat. I want to keep it very simple and I need to learn about the power of these small electric systems and how they will work with certain combat design.
    I have ordered a Lil Satan and the .049 equivilent power system from Brodak. I am a long time CL flier, and flew combat for over 12 years. I will eventually design my own aircraft around these power systems, but purchased a lil Satan, more for nostalgic reasons. I will scratch build one and preserve the kit.
    I really want to go smaller to have some that would be more around an .010 or .020 size. Possibly for some indoor flying. Eventually I want the design to be quite durable, so continued flying will be easy after mid air and terra firma mishaps. I will try to keep this thread updated as I progress and of course any experiences with these types of set ups will be welcome.
    Let's just say, they will be satisfied with less. " Ming the Merciless


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  2. #2

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    RE: Little Satan Electric

    Good luck on your new adventure !

  3. #3
    vertical grimmace's Avatar
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    RE: Little Satan Electric

    Well, here she is. Came out a little tail heavy, so I will move the motor out. Seems to have plenty of power. Should get a test flight in this week hopefully.
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    Let's just say, they will be satisfied with less. " Ming the Merciless


    BUSA Bro # 13

  4. #4

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    RE: Little Satan Electric

    Looks really nice. I have a couple of combat wings that I am thinking of converting, what motor are you using?

  5. #5
    vertical grimmace's Avatar
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    RE: Little Satan Electric

    OK, the motor Brodak sells for 1/2 A does not have enough power on 2s. So I am going to try an Eflite 370 inrunner. It is much faster with the GWS 5-3 prop. We shall see. I will try it again tomorrow. My first flight attempts were not succesful. My initial impression is I need a little bigger plane to lower the wing loading. Just running an engine is lighter than having to carry this battery weight.
    Let's just say, they will be satisfied with less. " Ming the Merciless


    BUSA Bro # 13

  6. #6

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    RE: Little Satan Electric

    Don't know what the Brodak package consists of - here are some shots of one that I've been flying for a couple of years now -

    The model is from a Danish website, but is basically a shrunk down FAI combat type. Spans about 28 inches. It probably has nearly twice the area of a Li'l Satan, if I remember my long-ago one. The airframe weighs right at 4 ounces - but the power system adds right at 5 oz.

    The electronics consist of:
    A BP-2212/6 or equivalent motor - 50 grams, 2200 Kv.
    Prop is a 6-4 or a 7-6 cut to 6 inches.
    An 18 amp - cheapo ESC
    A Hubin timer
    2-cell 800-1000 mah battery (weighs about 55 g.)

    This setup will turn about 12000 RPM and fly the plane on 35 foot lines for about 3 minutes. The current draw is about 15 amps on the ground, which goes down slightly in the air. Performance is decent, though it would not be competitive against even a TD.

    I tried a couple of other motors - I feel that the only way to get flying with 2 cells is a motor of at least 2000 Kv. If you can stand the weight increase of a 3 cell setup, you can probably drop to an 1750 or so Kv. Without looking at the Brodak specs, I would advise that you INCREASE the prop size. A 5-3 just isn't going to provide adequate thrust on 2 or 3 cells. I was able to fly a smallish stunt type on a 1800 Kv motor, but used a 7-4 prop. It was actually a nice flying little plane, till I flew it into a basketball backboard (I forgot that I was testing on 42 foot lines ).

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  7. #7

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    RE: Little Satan Electric

    Yeah, it's tough to make that little wing carry much weight for a decent size battery. I just got a baby flite streak (150 sq in) and it may be able to handle a 3s battery pack, we shall see. But I'm sure your experimentation will yield better results as you progress. But when all is said and done I believe bigger is better. It's tough to make the electric Lil Satan perform like it would with a Black Widow glow engine though. That's just my opinion. I've been wrong before. Maybe you will prove me wrong again. Good luck to you.

  8. #8
    vertical grimmace's Avatar
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    RE: Little Satan Electric

    Well, I got some flights in today. I was using an Eflite 370 motor, inrunner. I think in the 3500-4000 KV range. I forgot. I was using a GWS 5-3 and it flew very fast. I picked up an Eflite timer which I like as you can set the duration of flight and the rpm you want right before the flight.
    The plane flew very well. Loops were very large though. I increased elevator throw and move the CG back. It felt a little wobly though so I think I went too far. It lost its ability to track smoothly.
    Well, on my last flight, the motor died suddenly. Not sure why, I had programmed it for 2 minutes. I only got about one. Well of course it died as I was climbing high inverted. Pretty much went straight into the ground. Well, it broke the output shaft on the motor. Good thing I got it for half price. I think this is the benefits of an outrunner. More durable.

    I was getting more speed than I felt I could with a black widow. Not quite a TD though. Not a really god one. So I just ordered another motor. This time an outrunner that is pretty high KV.

    My next step will to design a new airframe. The lil Satan is just too small. My previous 1/2 A design for the TD and Norvel engines was around 250 sq. in. Foam and boom.
    Let's just say, they will be satisfied with less. " Ming the Merciless


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  9. #9

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    RE: Little Satan Electric

    Bravo ! Go man go !

  10. #10
    vertical grimmace's Avatar
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    RE: Little Satan Electric

    I actually bet there is a lot more power available here than even the hottest glow engine could produce. It is a matter of finding a good combo though. I am not on a performance chase though, as I want to get some good flying durable stuff to promote interest. Get too fast and new guys will not be able to handle it and the planes will break.
    Let's just say, they will be satisfied with less. " Ming the Merciless


    BUSA Bro # 13


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