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  1. #1826
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    The pictures that steve1mac posted actualy look like the Robart 1/5th scale Cub gear to me. I could be wrong.
    KaP2011
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  2. #1827

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    That certainly does look like the Robart gear with the front cross brace removed and also appears to be 1/5th scale. BTW, the 1/4 scale has a good width for the Pawnee.
    Harry

  3. #1828
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    I stand corrected. The landing gear is made by Robart.

    I used 1/4 scale for the spring loaded cross braces and 1/5 scale for the main outside braces. I had to purchase both sets of gear.
    Kind of an expensive way of doing it but the results were worth it for me.
    I mounted a 1/2" aluminum right angle strap inside the fuse along the width of the mounting area for the 8 nuts and bolts.

    Extra wood was applied to the inside to create a strong mount for the landing gear.
    The exact position of the front line of mounting bolts is 1/2" forward of the cut-out for the stock landing gear.
    I did this for balance. However I have a lot of engine up front and didn't want to tip forward. I also have 2 servos and tow hooks behind the cockpit.

    If you don't have the extra weight of tow hooks or a heavy engine such as the YS 115FZ you might consider moving the wheels back a bit.
    For final balance I places my battery halfway between the rear of the cockpit and the tail. I also moved the rudder servo to the rear of the fuse. So my weight distribution is quite different from the standard build.

    I added several more O-Rings because the new arangement of the spring loaded struts creates a wider spread which requires more resistance to flex.

    Robart Link: http://www.robart.com/products/14-sc...b-landing-gear

    Steve1Mac
    Steve1Mac, Palos RC

  4. #1829
    KaP2011's Avatar
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    RE: Hangar 9 40 Size Piper Pawnee!!!


    ORIGINAL: steve1mac

    I stand corrected. The landing gear is made by Robart.

    I used 1/4 scale for the spring loaded cross braces and 1/5 scale for the main outside braces.
    I mounted a 1/2" aluminum right angle strap inside the fuse along the width of the mounting area for the 8 nuts and bolts.

    Extra wood was applied to the inside to create a strong mount for the landing gear.
    The exact position of the front line of mounting bolts is 1/2" forward of the cut-out for the stock landing gear.
    I did this for balance. However I have a lot of engine up front and didn't want to tip forward. I also have 2 servos and tow hooks behind the cockpit.

    If you don't have the extra weight of tow hooks or a heavy engine such as the YS 115FZ you might consider moving the wheels back a bit.
    For final balance I places my battery halfway between the rear of the cocktit and the tail. I also moved the rudder servo to the rear of the fuse. So my weight distribution is quite different from the standard build.

    I added several more O-Rings because the new arangement of the spring loaded struts creates a wider spread which requires more resistance to flex.

    Robart Link: http://www.robart.com/products/13-sc...b-landing-gear


    Steve1Mac
    That's funny, I don't think my plane came with that part?? Maybe I got short changed?
    KaP2011
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  5. #1830
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    Ha Ha!
    I sucked at spelling bees.
    Steve1Mac, Palos RC

  6. #1831
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    After looking at the Robart site I noticed you can just buy the seperate parts instead of the whole gear sets.
    I should have studied this a little more last fall and saved some money.

    When I get a chance I will look at the parts sheets that came with the landing gear and make a list of only the parts needed to build the assembly I created with 2 whole sets of landing gear.
    I can't figure it out just looking at the Robart site because there are no pictures for individual parts.
    Check back in a day or so for a parts list for this custom assembly.
    Steve1Mac, Palos RC

  7. #1832

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    You made some nice looking gear.

    Harry

  8. #1833

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    You folks must have a lot of dollars to spend on gear.
    I just used two nylon landing gear straps over the stock gear, screwed into the plywood bottom of the fuselage. End of problem with no weight change.
    The old "kiss" formula.

  9. #1834

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    RE: Hangar 9 40 Size Piper Pawnee!!!


    ORIGINAL: pilotdb09

    You folks must have a lot of dollars to spend on gear.
    I just used two nylon landing gear straps over the stock gear, screwed into the plywood bottom of the fuselage. End of problem with no weight change.
    The old ''kiss'' formula.
    Can you explain further, or better yet, post some pics please? I don't have that kind of bucks either.

    Thanks in advance..........

  10. #1835
    KaP2011's Avatar
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    Pictures are in post #1811. What pilotdb09 is getting at is that the Robart gear in question costs about $150. Very expensive for a sport scale plane.
    KaP2011
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  11. #1836

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    ORIGINAL: KaP2011

    Pictures are in post #1811. What pilotdb09 is getting at is that the Robart gear in question costs about $150. Very expensive for a sport scale plane.
    Are the pics in #1811 what pilotdb09 was referring to? Is that his setup?

  12. #1837
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    That is not the setup that pilotdb09 is useing, I believe he is useing the stock setup with extra straps to keep the landing gear from moving. That is the setup in the photohe is refering to when he say's "You folks must have a lot of dollars to spend on gear."
    Robart landing gear are very expensive and in my oppinion, not worth the money.
    KaP2011
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  13. #1838

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    Just curious KaP2011, do you use the Robart on your Pawnee?

    Harry

  14. #1839

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    I have one of the first issues of the Pawnee and still fly it today. Want something different try it on floats check out post five on this thread for some pictures http://www.rcuniverse.com/forum/m_10...m.htm#10709992

  15. #1840
    KaP2011's Avatar
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    No, my Pawnee has the stock setup. My opinion of Robart landing gear comes from other experiences.
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  16. #1841

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    I agree that the Robart gear is a bit pricy but.. in my humble opinion, they are worth every penny. The stock main (and tail) gear is substandard compared with the quality of the airframe. What I have encountered is that the plane can be the cheapest part of theequationand gets more so as you enter giant scale. I just got another set of Robart retracts for my latest plane that were more money than the plane itself. I do like your thinking (KISS)

    Harry

  17. #1842

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    What is the way most of you attach/remove the wings? Do you remove the pins from the struts or open the hatch and take out the 4-40 screws and slide out the strut plate, leaving the pins attached?

    Thanks

  18. #1843

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    CB 36,
    I made a small brass plate, same shape as the exposed part where struts attach. I soldered the pins to it. Then drilled a third hole for a 4-40 socket head bolt. I then drilled that third hole in the plate mounted in the fuse. Then soldered a 4-40 nut on the small plate. By using a 5/8" long bolt, the pins and the small plate remain attached to the fuselage when you loosen the bolt enough for the strut ends to be removed from the plane.
    You will have to shorten the pins by cutting them off at the keeper hole. This way everything can be taken apart and there are no loose pieces, (pins, keepers, etc.) to be lost at the field.
    I have photos of this simple correction. Now if I only knew how to get them here! I will email them to anyone who requests them.
    Pilotdb09

  19. #1844

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    I use the pins. Always thought the pins were a good design and keep the pins, wing bolts and an allen wrench in a used plastic pill bottle. I have a bottle for each plane I have.

    Harry

  20. #1845

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    Ok Ihave finished the build. I checked the CG yesterday and it seems to be very very nose heavy. I am using the Evolution .60 and thinking about moving the engine back a little. Ireally do not want to just stick a bunch of weights on the tail. I am looking to move the battery back a little, howver not sure how to secure it just yet. Any suggestions on what to do about the CG issue.

  21. #1846
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    You can make a modification to the rudder servo and mount it near the rudder.
    I did this and set it up with dual control arms.


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  22. #1847

    RE: Hangar 9 40 Size Piper Pawnee!!!

    I moved my battery pack into the tail of my Pawnee to get the correct CoG.

    Cheers!
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  23. #1848

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    RE: Hangar 9 40 Size Piper Pawnee!!!

    Flap help please!
    I'm posting this on the Pawnee thread because this is the plane I'm in the last stages of setup and I'm stuck on how to program my Futaba 7C, 2.4 for flaps. I just can't seem to get what the manual is trying to tell me. I have a "Y" harness for the flap servos and want to program to the 3-position "G" switch, NOT the dial. There must be some easy way to do this that I'm not getting.

    Thanks all!
    CB

  24. #1849
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    Been there, done that. Check out this thread. http://www.rcuniverse.com/forum/m_11...m.htm#11091069
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  25. #1850
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    RE: Hangar 9 40 Size Piper Pawnee!!!

    I made a hatch in the tail section. Installed the battery pack back there with Velcro. The engine I used was a Saito 82 and it balanced out just right and it is a fun planetoids fly it's oneofmy favorites
    Derrick
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