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  1. #51
    najary's Avatar
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

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  2. #52
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

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  3. #53
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    Hi Najary,

    Another great build thread!

    On the hinges to use, just wonder why not the CA type.

    Thanks
    Where facts are few, experts are many.
    Perfection is God\'\'\'\'s business.

  4. #54
    najary's Avatar
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    RE: ARIXTRA Build Thread by ISAAC NAJARY


    ORIGINAL: nonstoprc

    Hi Najary,

    Another great build thread!

    On the hinges to use, just wonder why not the CA type.

    Thanks
    Hi Nonstoprc,

    I prefer the method of pivot pin over the plastic bending which I do not know how long it will last.

    I like the GPM hinges because the epoxy glue penetrates into the holes and works like pins which prevent the hinges to come out from the control surface.

    Best regards,

    Isaac Najary

  5. #55
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    Understood. Maybe try a couple as the middle hingers first. I shared the similar view as yours before and now use CA type inclusively.
    Where facts are few, experts are many.
    Perfection is God\'\'\'\'s business.

  6. #56

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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    G'day mate just wondering about your hinge cutter.......where can I get one

    Reds

    Macros

  7. #57
    najary's Avatar
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    ORIGINAL: MAVROS

    G'day mate just wondering about your hinge cutter.......where can I get one

    Reds

    Macros
    Hi Macros,

    Here it is:
    http://www.centralhobbies.com/Tools/...ent.html#Taper

    Best regards,

    Isaac Najary

  8. #58
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    Saving 2 grams - (2.1-0.1)
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  9. #59
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

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  10. #60
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

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  11. #61
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    Saving 5.4 gram = (2.4+2.4+0.6)

    Savox screws - 2.4 gram,

    Central Hobbies Deep Head Socket Screws - 1.8 gram
    http://www.centralhobbies.com/buildi...ers/fastnr.htm

    Futaba screws - 1.2 gram

    Elevators - 2.4 gram = 2X(2.4-1.2)

    Ailerons - 2.4 gram = 2X(2.4-1.2)

    Rudder - 0.6 gram = (2.4-1.8)

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  12. #62
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

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  13. #63
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    Saving 4.6 grams - (14.3-9.7)
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  14. #64
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

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  15. #65
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

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  16. #66
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

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  17. #67

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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    Isaac,

    I see you adding the cover to the bottom of the horizontal stab halves. itsn't that going to cause any trim (up trim)?

    Ihncheol

  18. #68
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    On the choice of pushrods, it seems the metal ones could be replaced by solid carbon fiber type (say, 2.5mm) to save some weight.
    Where facts are few, experts are many.
    Perfection is God\'\'\'\'s business.

  19. #69
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    RE: ARIXTRA Build Thread by ISAAC NAJARY


    ORIGINAL: PatternFlyer

    Isaac,

    I see you adding the cover to the bottom of the horizontal stab halves. itsn't that going to cause any trim (up trim)?

    Ihncheol
    Hi Ihncheol,

    Theoretically you right, but it doesn't matter because you have to trim the plane anyway.

    Best regards,

    Isaac Najary

  20. #70
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    RE: ARIXTRA Build Thread by ISAAC NAJARY


    ORIGINAL: nonstoprc

    On the choice of pushrods, it seems the metal ones could be replaced by solid carbon fiber type (say, 2.5mm) to save some weight.
    Yes, but how you connect the carbon rod to the plastic bearing link?

    Best regards,

    Isaac Najary

  21. #71

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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    ORIGINAL: najary


    ORIGINAL: nonstoprc

    On the choice of pushrods, it seems the metal ones could be replaced by solid carbon fiber type (say, 2.5mm) to save some weight.
    Yes, but how you connect the carbon rod to the plastic bearing link?

    Best regards,

    Isaac Najary
    Thin cyano run into the assembled pushrod.
    Used on several models over time , hence the extra tube in the middle!


    Uploaded with ImageShack.us

  22. #72
    nonstoprc's Avatar
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    Hi Najary,

    I have great success with JB weld to glue the CF rod ends to the connectors.

    Regards

    Nonstop
    Where facts are few, experts are many.
    Perfection is God\'\'\'\'s business.

  23. #73

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    RE: ARIXTRA Build Thread by ISAAC NAJARY


    ORIGINAL: najary


    ORIGINAL: PatternFlyer

    Isaac,

    I see you adding the cover to the bottom of the horizontal stab halves. itsn't that going to cause any trim (up trim)?

    Ihncheol
    Hi Ihncheol,

    Theoretically you right, but it doesn't matter because you have to trim the plane anyway.

    Best regards,

    Isaac Najary

    I think these style of covers actually create more drag than an uncovered servo arm. The large opening at the back of the fairing/cover creates a very turbulent point with a high drag rise.
    Doug Cronkhite

  24. #74
    najary's Avatar
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    RE: ARIXTRA Build Thread by ISAAC NAJARY


    ORIGINAL: f3a05

    ORIGINAL: najary


    ORIGINAL: nonstoprc

    On the choice of pushrods, it seems the metal ones could be replaced by solid carbon fiber type (say, 2.5mm) to save some weight.
    Yes, but how you connect the carbon rod to the plastic bearing link?

    Best regards,

    Isaac Najary
    Thin cyano run into the assembled pushrod.
    Used on several models over time , hence the extra tube in the middle!


    Uploaded with ImageShack.us
    Hi Nonstop,

    The carbon rod is superior were you want a long pushrod, but were you need a sort one I prefer the A metal pushrod because I is simpler and about the same weight.

    Think about it.

    Best regards,

    Isaac Najary

  25. #75
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    RE: ARIXTRA Build Thread by ISAAC NAJARY

    Hi Najary,

    yes, gluing the carbon fiber rods to the baring joints is more involving, as the length of the rod has to be cut precisely.

    On comparison of weight of carbon fiber rods vs. metal rods, I am afraid CF rods definitely are lighter!

    I quoted the spec for Graphlite Carbon Fiber Rod: 0.098" Dia., 3 ft. long, 2.49 mm x 0.9 m, weight 7.2 grams

    and the density chart for CF tubes vs. other materials.
    Where facts are few, experts are many.
    Perfection is God\'\'\'\'s business.


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