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kevin wild

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Posts posted by kevin wild

    Own-design epp depron jet

    in Own Design Project Blogs

    Posted

     
     
    Sounded like a good idea at the time !!
     
    no i haven't broken my plane, i was browsing the modelflying forum and came across a thread with video, one of the posts had a "brilliant" idea for doing your own video while flying
     
    no not one handed flying, just tie the camera around your neck and away you go
     
    lol i should have known it wouldn't have worked
     
    out of the 3min of video i managed before the camera battery died i think the jet is in frame for about 7seconds, that's 14 shots of it whizzing across the screen as i tiny black triangle
     
    I've uploaded it to youtube and edited all the rubbish out lol
     
    if you're realy bored and like whizzy little black triangles then hre it is
     

    Edited By kevin wild on 18/02/2011 15:52:59

    Edited By kevin wild on 18/02/2011 15:53:40

    Edited By kevin wild on 18/02/2011 15:54:07

    Own-design epp depron jet

    in Own Design Project Blogs

    Posted

    HI
     
    on closer inspection the servo was ok, it had just pulled the bottom of the casing off, i gave it a good check over, tested it with a load and all was ok
     
    i spent last night moving the servos to the upper wing surface and then put a bit of paint on it
     
    with the battery moved backward 10mm it was off to the common
     
    much better this time, i had a good 10min fly getting used to it and trimming it out and then landed, it still sank a bit on landing and i noticed the elevons were up by about 5 degrees
     
    i moved the battery back another 10mm and with another battery tried again, i had to trim the nose back down a bit but it was better again
     
    it's quite fast on full throttle, I spent most the time at just under half i reckon, the roll rate is fast enough for me but not mental, i was dabbing a bit of down in as she went inverted because the nose was dropping slightly, loops need full power and are pretty big i'd say about 80 foot dia, i haven't tried inverted yet
     
    on the 3rd flight i decided to try hi rates, the increased elevator was nice but the roll was too twitchy for me, i climbed to hight, throttled back and held in full up, she slowed to a snails pace and just sank like a delta should, no wing tipping at all
     
    one thing i've noticed is that she climbes (swoops) under full throttle, is it the c of g still too far forward ? i will try moving it back a bit more next time
     
    i'm pleased with the way it flies, i will try a bit of inverted next time too
    canopy painted white and a bit of black behind the nose
     

    Own-design epp depron jet

    in Own Design Project Blogs

    Posted

    well it flew
     
    It never ends well when a post starts that way does it

    I started with a safe c of g at about 12 percent Mac, range checked it and off she went like a scalded cat
     
    I climbed to hight and throttled back, i felt i was holding the nose up far too much, the c of g was very nose heavy, now here's the problem do you come in fast with elevator authority or slow ?
     
    i tried slow and it just sank, it was a controlled landing but heavy, with the field very muddy and exposed servos on the underside it stopped dead on contact, yep it ripped a servo out, well not the whole servo just the top half of it, the bottom half is still glued in lol
     
    it'll be the weekend now before i get a replacement and it'll be next week before i have a chance to try again with a more rearward c of g, i might move the servos up top too

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