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  1. GAUI X7: Note to self, part II

    by , 08-04-2012 at 09:20 AM
    continuing here, as part I **LINK*** hit the 10k character limit

    • I'm reducing the size of the 2s Rx LiPo from 2500 mAh to 1100 mAh. For one flight, the charger typically puts back 200 mAh. The power consumption is lower than in earlier helis since the HV brushless servos (Outage Torq) are very efficient
    • A Hyperion 2s 35C 1100 mAh LiPo weights about 71 grams. For comparison, a Hercules superBEC is 40g plus wiring.IMG_2731.JPG
    • Here is my current V-bar setup:
    ...

    Updated 14-04-2012 at 06:43 AM by GravityKills

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  2. GAUI X7: Note to self...

    by , 06-03-2012 at 08:04 PM
    • the kit comes with a 10 tooth pinion (6mm)
    • there are 4mm, 5mm, 6mm, 8mm, 10 mm screws, so better pay attention
    • Most M3 screws use about five turns (count to check, whether the length is correct)
    • The length of a button head screw is the thread, excluding the button
    • The length of a countersunk head screw (those with a cone-shaped head and matching pre-drilled holes) are measured including the head, from end to end.
    • The lowest main shaft bearing mount and the front bevel gear mounting
    ...

    Updated 05-04-2012 at 07:56 PM by GravityKills

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  3. Stickbangers: DIY computer game using DX7/8

    by , 08-01-2012 at 05:22 PM
    Alright, it won't win an industry award for "best graphics". It's a little weekend hack to brush up my C++.
    It might still score an award for "most annoying computer game", if taken too seriously...
    sb.jpg

    One crosshair each tracks the stick position of left and right transmitter stick. Left is cyan, right is magenta.
    Colored spots pop up and disappear in a regular rhythm.
    While the "crosshairs" are on a spot ...

    Updated 08-01-2012 at 10:51 PM by GravityKills

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  4. some T-Rex 250 thoughts

    by , 25-06-2011 at 12:08 PM
    (the older thread just became a blog entry):

    NEW: chinese weights mod
    IMG_1746.JPG

    Get a screw kit, use two washers and a screw as shown in the picture.
    Reduces load on the rudder servo. You'll have to use less gyro gain, that's normal.
    ---------------------------------------------------------------
    NEW: Radius arm mod
    IMG_1747.JPG
    The two little brass washers act as a bearing between radius arm and washout ...
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  5. Common sense: Flybarless setup

    by , 26-02-2011 at 11:59 AM
    A conventional flybar acts as power steering. And ”power” steering indeed - on a .90 heli, it may take away a hundred watts or more from the main engine.
    In a flybarless setup, the swash servos need to do the same job. They are more efficient than the flybar, but still they need to work very hard.
    This article discusses some typical problems that can limit the performance of a FBL heli.

    swash servo setup


    The swash servos remain one of the ...

    Updated 26-02-2011 at 06:54 PM by GravityKills

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