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Turnigy G10 Outrunner - Hair Dryer & Thrust test

Posted by Gareth Rens on January 10, 2012 at 1:02pm



Motor: Turnigy G10 810kv
(http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=19020)

ESC: Turnigy dlux 55A SBEC
(http://www.hobbyking.com/hobbyking/store/__16365__Turnigy_dlux_55A_SBEC_Brushless_Speed_Controller.html)

Battery: Turnigy Nano-tech 5000mah 4S1P
(http://www.hobbyking.com/hobbyking/store/__17254__Turnigy_nano_tech_5000mah_4S_35_70C_Lipo_Pack.html)

Prop: EPP1245 CF SF
(http://mikrokopter.altigator.com/propeller-pair-epp1245-cf-p-89.html)


I was expecting around 1.6kg of thrust per motor. My platform weighs about 5-6kg.
1.6 x 8 = 12.8kg for a 6kg platform is fine. With a 12x45 prop, im getting 2.4kg per motor.
I think I might have to add some weaponry or perhaps build a small cockpit for my cat!



Thanks to Karla for allowing me to test the "blow your hair back" factor.


G:)

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Comments

  • Gareth Rens January 12, 2012 at 2:50pm

    I would of held the motor, the only problem is A: I dont trust Karla completely with the throttle. And B: I dont have hair...

  • Gareth Rens January 12, 2012 at 2:48pm

    @Ellison: Geekness is indeed in the heart! Runs in the blood.

    As long as everybody is having fun safely, thats all that matters! :)

    G:)

  • Ellison Chan January 12, 2012 at 1:41pm

    Karla, I'm cute.  That's why no one believes that I'm a geek, but geekness is in the heart.

    Eduardo, I'm sure that Gareth was not holding a gun to Karla's head.  She looks like she's having lots of fun, and those glasses are pretty tough looking, as well as Karla.  It's all a bit of fun.

  • Gareth Rens January 12, 2012 at 3:33am

    Doing it like this won't work

    @ JOE: Yet it did... I truly believe that this method is better than the L shaped method. Im measuring centre line thrust, you are trying to measure prop wash.

    First of all. The prop is mounted upside down and blowing up and away from the scale (just like a pusher plane), so the thrust vector is on the center line of the motor shaft.

    Opposed to the L method, where the thrust vector is off centre if not set up correctly! Not to mention any lever effect generated by the L. They specifically put the motor on the L to keep the propwash away from the scale as it would cause erroneous measurments.

    All theories and debating aside.

    Here are some results that will put this to bed :)

    MY TEST: 14.8v - 10X4.5 Prop - 1570g Thrust

    HOBBYKING: 14.8v - 10X5 Prop - 1650g Thrust

    Its as accurate as its gonna get without calling in NASA ;)

    G:)

    P.S. What safety issues? I had Chuck Norris standing by... ;)

  • Martin Szymanski January 11, 2012 at 10:49pm

    All Girls hugg your geeks they may become Doctors. ;-)

  • Gareth Rens January 11, 2012 at 10:14pm

    @eduardo: Only thrust results, 2.4kg in the 2nd video.

    Regarding safety, We were both wearing eye protection, and I had my finger on the throttle. Also the prop was attached with a 5mm nyloc with locktite. I made sure all was fine with the whole thing safely clamped in a vice. If in the unlikely event that the prop came off it would fly away from Karla. Perfectly safe, well just as safe as flying a quad at eye level a meter away.

    In all my endevours to date: from pyrotechnics/rocketry/modeling/firearm training/lasers/explosives synthesis etc. I have never had an accident! :) I am pedantic about doing things safely. The only thing iv ever broken is my wrist, rollerblading when I was 9...

    G:)

  • eduardo January 11, 2012 at 9:38pm

    hummmm very beatyfull girl ... but.... where are the results ?

    if you know the real dangerours this test can be you never do this with this girl.

  • Gareth Rens January 11, 2012 at 10:09am

    @Ellison: She already has a "ducted fan" but it doesnt produce much thrust. Only enough to dry her hair.

    I wasnt worried about a few grams, but good point :)

  • Ellison Chan January 11, 2012 at 10:05am

    I think you need to also put the battery on the scale and then zero it.  Otherwise you loose a few grams from the tension in the wire.

  • Ellison Chan January 11, 2012 at 10:03am

    Karla, did he get that for you, as a Christmas gift?  Tell him to get you a ducted fan next year.

This reply was deleted.