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Thread: Moulded Ritewing Mini Drak Build & Info

  1. #261
    Flyer of the lands Hoss's Avatar
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    Hey guys,

    I'm in the process of building the extended mini drak wings. I know some of you, like me, installed the singularity in the side bay and ended up having issues with servo twitching. I planned to install the singularity out on the wing and put the vtx in the bay. I'm worried though that the proximity to the servo (a couple inches) might have the same effect. Can the guys that have their singularity out on the wing please comment and let me know how it worked out and if you see any issues now? Installing it requires surgery, and I'm very serious about cutting my beautiful wings - I'm considering installing it or scrapping it altogether and using a standard antenna. With the extended wings bringing it up to 55", carrying a proper 1.3 antenna is absolutely no issue. Thanks guys!

    Scott

  2. #262
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    that's where I have mine. no twitching. invisible from the top.
    Click image for larger version. 

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  3. #263
    Flyer of the lands Hoss's Avatar
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    Quote Originally Posted by crashsalot View Post
    that's where I have mine. no twitching. invisible from the top.
    Click image for larger version. 

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    Are those extended wings? I ask only because, if they are, I'm not sure where the servo is. It looks like it's right next to it though - is that correct? Maybe it's the proximity of the lead and not the servo itself that is the issue - ohhh... Maybe it's the fact that the lead is near the same size as a 1.3 dipole - so maybe it's super sensitive to bring that close because it very efficiently absorbs a lot of the radiation... Just a thought

    Scott

  4. #264
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    Yes, extended wings. Servo right next to the antenna, you can see the cut and the horn. 1W 1.3 vtx. 225MGs.

  5. #265
    Flyer of the lands Hoss's Avatar
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    Quote Originally Posted by crashsalot View Post
    Yes, extended wings. Servo right next to the antenna, you can see the cut and the horn. 1W 1.3 vtx. 225MGs.
    Perfect. Were you having twitch originally or did you put it there from the get-go?

    Scott

  6. #266
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    Quote Originally Posted by Hoss View Post
    Perfect. Were you having twitch originally or did you put it there from the get-go?

    Scott
    Just got lucky. Was going by cable lengths

  7. #267
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    I am making up my own control rods for the Mini Drak using some 4-40 Threaded Rod.
    I am using the HS 225MG servos.
    I have the DuBro Ball Link connectors.

    I was wondering what best practise is on which of the 3 holes on the servo horn to attach the DuBro Ball Link to. I may have started with the top one (most elevon throw available) but the bolt for the DuBro link is around 3mm and I think the servo horn hole is about 1.5mm. The material around the top hold is tapered so there is not going to be much left after I have doubled the size of the hole sufficient to fit the 3mm bolt through it. I am concerned that it may be a point of failure after that.

    If I use the middle or the bottom hole on the servo horns, am I going to see any problems? Which hole on the horn is everyone else using.

    Finally, is a 4-40 rod too thick for this anyway, should I be looking at scaling it down to a thinner rod?

    Many thanks

  8. #268
    Flyer of the lands Hoss's Avatar
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    Quote Originally Posted by Hughie View Post
    I am making up my own control rods for the Mini Drak using some 4-40 Threaded Rod.
    I am using the HS 225MG servos.
    I have the DuBro Ball Link connectors.

    I was wondering what best practise is on which of the 3 holes on the servo horn to attach the DuBro Ball Link to. I may have started with the top one (most elevon throw available) but the bolt for the DuBro link is around 3mm and I think the servo horn hole is about 1.5mm. The material around the top hold is tapered so there is not going to be much left after I have doubled the size of the hole sufficient to fit the 3mm bolt through it. I am concerned that it may be a point of failure after that.

    If I use the middle or the bottom hole on the servo horns, am I going to see any problems? Which hole on the horn is everyone else using.

    Finally, is a 4-40 rod too thick for this anyway, should I be looking at scaling it down to a thinner rod?

    Many thanks
    4-40 is a bit much for the mini drak. 2-56 will serve your needs just fine and you won't have to worry about hole sizes, though you'll need to get a different control rod system. These work great (below). I throw a small diameter carbon tube and some heat shrink on both sides to ensure it is secure and can't bend.



    Scott
    Last edited by Hoss; 28th November 2017 at 10:46 PM.

  9. #269
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    Quote Originally Posted by Hoss View Post
    4-40 is a bit much for the mini drak. 2-56 will serve your needs just fine and you won't have to worry about hole sizes, though you'll need to get a different control rod system. These work great (below). I throw a small diameter carbon tube and some heat shrink on both sides to ensure it is secure and can't bend.



    Scott
    Thanks Scott, what about the angle different between the servo throw and the elevon. I assumed it was necessary to remove the resistance by using a ball link ?

  10. #270
    Flyer of the lands Hoss's Avatar
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    Quote Originally Posted by Hughie View Post
    Thanks Scott, what about the angle different between the servo throw and the elevon. I assumed it was necessary to remove the resistance by using a ball link ?
    It's not too bad and the throws are small, so it's fine.

    Scott

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