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Thread: Grob 103C Sailplane

  1. #1

    Grob 103C Sailplane



    Grob G103C ARF w/Electronic Spoilers and Power System
    109-3/8 in. wingspan, 49-3/8 in. long, 642 sq. in. wing area, 85 oz. flying weight. Over a 9' wingspan sailplane with white gelcoated fuselage, sheeted foam core wings and built up tail. Wings and tail are pre-covered with genuine Oracover for a great finish and years of extraordinary performance. The wings are pre-slotted for the included electronic spoilers and the ailerons are pre-hinged. Each wing slides onto the 10mm steel wing joiner and is easily removable for transport. The fuselage has generous amounts of carbon fiber reinforcement around the cockpit opening for long life.

    The included power system will pull the sailplane to thermal altitude in short order then turn off the motor and go searching for lift. The Grob indicates lift well with a rise of a wingtip; the length of your flight can be as long as conditions and your skills allow. The sailplane has a flat glide and a broad speed range, the electronic spoilers make controlling the sink rate an easy task. They do not require any setup and are fully proportional, plug the two into a Y-connector and your flap channel or side slider and you have the control to make nice precision landings. This is a sailplane for intermediate to advanced builders and fliers, some previous experience with fiberglass fuselage aircraft is recommended.

    Link to product page

  2. #2

    Re: Grob 103C Sailplane

    Video
    [youtube:71qfks9m]http://www.youtube.com/watch?v=D9XM-RL9aXk[/youtube:71qfks9m]

  3. #3

    Re: Grob 103C Sailplane

    Hey Jason....

    Nice looking Grob. This could be a great step up from the EZ for guys that want to aerotow it.

    Dave

  4. #4

    Re: Grob 103C Sailplane

    Very nice looking sailplane.

    Is this Grob capable of thermal duration or just an electric flyer?

  5. #5

    Re: Grob 103C Sailplane

    It will thermal just fine. Wanted to keep it low for the video so you could see, so we used the motor a good bit.

    Jason

  6. #6

    Re: Grob 103C Sailplane

    Jason,

    What battery did you use on the Grob? The product page did not specify what size and voltage of the battery.

    Brian

  7. #7

    Re: Grob 103C Sailplane

    Quote Originally Posted by eajbrian
    Jason,

    What battery did you use on the Grob? The product page did not specify what size and voltage of the battery.

    Brian


    It was a 11.1v 3200mAH LiPo 20C battery used in the Grob103C Sailplane.
    Hope this helps,

    CK

  8. #8

    Re: Grob 103C Sailplane

    I was actually using a 3S 2100mAH pack in the Grobe. It doesn't need a big battery at all.

    Jason

  9. #9

    Re: Grob 103C Sailplane

    Hi Jason,

    I just started building my Grob. The instructions say that when using the electronic spoilers to use a separate receiver battery or BEC because the spoilers can exceed the built-in BEC of most ESCs. Can you provide some additional information or experience on this?

    Thanks!

  10. #10

    Re: Grob 103C Sailplane

    That certainly makes sense. It's better safe than sorry. $15 is all it takes. http://www.hobby-lobby.com/erc_6_amp_be ... 2_prd1.htm

    Jason

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