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Type: Posts; User: mmattockx

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  1. Replies
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    That should be the motto for this forum...;) ...

    That should be the motto for this forum...;)


    Mark
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    There aren't many 4 channel built up DLG's...

    There aren't many 4 channel built up DLG's available at this point. Almost everything that is built up is 2 channel and most everything with flaperons is a composite airframe. The only built up full...
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    They are available free on Outerzone: ...

    They are available free on Outerzone: http://www.outerzone.co.uk/plan_details.asp?ID=5496


    Mark
  4. While it is possible that you will have issues,...

    While it is possible that you will have issues, it is impossible to issue a blanket statement like that without knowing a huge amount of details and probably doing some testing.




    The four...
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    Double tap, stupid forum software. Mark

    Double tap, stupid forum software.


    Mark
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    Are you looking at current F3A or classic...

    Are you looking at current F3A or classic pattern? What level are you planning to compete at? Are you looking for a full on 2m guppy plane or something smaller? Gas, glow or electric power?

    In the...
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    PM sent. Mark

    PM sent.


    Mark
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    Outerzone has the Goldberg plans available for...

    Outerzone has the Goldberg plans available for download but they don't show the formers so you would have to work those out from the top and side views.


    Mark
  9. +1 to both. It is simply not possible to...

    +1 to both. It is simply not possible to accurately recreate cross sections from a simple 3 view drawing. All the 3 view gives you is width and height at a station and the rest is undefined.



    ...
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    I decided a while back to keep the engine and run...

    I decided a while back to keep the engine and run it in an older 120 sized pattern plane where it is most suited.


    Mark
  11. 1) I would build it flat with no dihedral. 2)...

    1) I would build it flat with no dihedral.

    2) No opinion, but a light 104" Kadet with flaps would probably just hover down to a spot landing...

    3) I would build the wing with full length ribs...
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    I like ceiling tiles myself. Whatever you use...

    I like ceiling tiles myself. Whatever you use make sure it will lay flat on the board so that you don't pick up a warp from it.


    Mark
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    Since you are in Florida I would suggest not...

    Since you are in Florida I would suggest not using any water at all. The glue will cure just from atmospheric moisture, it just takes a bit longer. I live in a near desert with very low humidity...
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    That is probably a technique issue more than the...

    That is probably a technique issue more than the glue itself. You only use a couple ounces of glue per wing half (on a 2m sized pattern plane wing) for either epoxy or PU and the 3M 30-NF is likely...
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    Vacuum is preferred but it is not essential. My...

    Vacuum is preferred but it is not essential. My biggest issue with contact adhesives is that they are harder to get a straight wing with. They work fine, but you only get one shot at attaching the...
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    Laminating epoxy or polyurethane glue are far and...

    Laminating epoxy or polyurethane glue are far and away the best choices for sheeting foam core wings. You don't need a vacuum bagging system, weights work just fine.
    ...
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    +1. It may look like the real thing, but flies as...

    +1. It may look like the real thing, but flies as a model and the conditions inherent to that. Use an airfoil that suits the flight conditions it will see. I also agree on the NACA 24XX series as an...
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    http://www.rcuniverse.com/forum/glow-engines-114/1...

    http://www.rcuniverse.com/forum/glow-engines-114/11610816-thunder-tiger-where-they.html


    Mark
  19. Replies
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    If you are drawing in 2D you need to do a...

    If you are drawing in 2D you need to do a projection from a plan view onto a side view of each rib to see where the spar will hit it, then put the spar notch at that location.


    Mark
  20. Replies
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    Cool, good news. I've got one of Mike's original...

    Cool, good news. I've got one of Mike's original kits still in the box in my basement waiting for me to get that far.


    Mark
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    Maybe I'm just less concerned about fine details,...

    Maybe I'm just less concerned about fine details, but for that model I would just cut a new wing using the NACA 0012 or 0015 airfoil and carry on. As I said, it isn't crucial as long as you are in...
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    I don't understand your question. Are you looking...

    I don't understand your question. Are you looking for an airfoil shape to use for cutting cores? For the most part there is no real magic to what airfoil you use, the only groups that care much are...
  23. Flow is not the issue there, trapping the maximum...

    Flow is not the issue there, trapping the maximum amount of the intake charge in the cylinder is. Those ports are designed to aim the incoming charge to a specific spot in the cylinder in order the...
  24. I decide more based on the model and what it is....

    I decide more based on the model and what it is. For instance, a scale model of an aircraft that was originally a fabric covered built up structure would get a built up wing for scale accuracy. Foam...
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    Some photos of your setup would help a lot in...

    Some photos of your setup would help a lot in suggesting some improvements


    Mark
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