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  1. #51
    Alex7403's Avatar
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    RE: Goldberg super Chipmunk build

    Thanks dragonov3,
    I tought about tower 61 but read somewhere that the 75 is the most successful of these engines, so I'll have to manage the throttle or not...
    the balsa wing tip is something i intend to do too.

    Alex
    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  2. #52

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    RE: Goldberg super Chipmunk build

    I'm going with an OS. 75 AX and a 13 x 8 prop. Does anyone have any ideas for a good third party fiber glass cowl and wheel pans? The stock plasic included with the kit is lame.

  3. #53
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    RE: Goldberg super Chipmunk build

    yes there is http://www.fiberglassspecialtiesinc.com/catalog.htm
    they have fiberglassed cowl and wheel pants.
    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  4. #54

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    RE: Goldberg super Chipmunk build

    Nice build. I built a super chipmunk probably 15 years ago and I still fly it to this day. Good call on going with a servo for each aileron. I started off with a single and then later went to a dual set up, it really woke the plane up. I also started with a Magnum .61 in it but later changed it to a 4 stroke 90. It flew fine with the 60 but I wanted the 4 stroke sound and torque.
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  5. #55

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    RE: Goldberg super Chipmunk build

    Hi Alex,
    allow me to introduce myself, my name is George and my screen name is "CTFLYBOY" just letting you know I'll be joining the ranks on this build with in a month or so. I had one of these back in the early 90's, sold it, then went to the 1/5 scale by "Ohio R C" which had a 84" ws, and used a US 35 gas engine,and it weighed 16 lbs. pic enclosed. I might add these 2 planes flew great and I'm looking forward to flying it again.
    see you soon.

    George
    ctflyboy
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    Remember, Man\'\'s 2nd greatest adventure is FLYING, LANDING is his FIRST.

  6. #56

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    RE: Goldberg super Chipmunk build

    Alex,
    I don't know how this happened but it did,





    George
    ctflyboy
    Remember, Man\'\'s 2nd greatest adventure is FLYING, LANDING is his FIRST.

  7. #57

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    RE: Goldberg super Chipmunk build


    Remember, Man\'\'s 2nd greatest adventure is FLYING, LANDING is his FIRST.

  8. #58
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    RE: Goldberg super Chipmunk build

    Welcome to the build George,
    I'm planning a wide wing center glassing with belly pan from balsa at the same time.

    Alex
    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  9. #59
    Live Wire's Avatar
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    RE: Goldberg super Chipmunk build

    Your picture was rotated on your PC.
    Larry K
    Sig Brotherhood # 1 Sig Kadet Brotherhood # 4 WACO Brotherhood #34 Cub Brotherhood 14

  10. #60
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    RE: Goldberg super Chipmunk build

    Until a month ago I would use the 4" fiberglass tape from tower and I was happy until I needed a 5" heavy weave fiberglass.
    searched the internet and at the end one gentleman here pointed that there is this fiberglass cloth 36" x 36" from home depot and its <$3 which is half price from the 4" tape.
    I wish I knew this 3 years ago but this is how we learn...
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    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  11. #61

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    RE: Goldberg super Chipmunk build

    Alex7403: Hows your build going? I havent seen anything from you in a while. I made the balsa wing tips for mine and they came out awesome. Just started working on the fuse, everthing is rubber banded and taped together. Ran out of time so i didnt get it glued yet. I'm amost ready to glass the center section of the wing, just needs a little more sanding. Got mid-terms and a couple of english papers due this week, so building time has been severly curtailed. Look forward to updates on your progress.
    Humilitas occidit superbiam.

  12. #62
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    RE: Goldberg super Chipmunk build

    to remove this post
    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  13. #63
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    RE: Goldberg super Chipmunk build

    I'm glassing the wing center, did the top and the wing brackets.
    As for the wing bottom I'm trying to catch few birds here - I want to glass the bottom and to this fiberglass layer to glue the balsa belly pan and to try not to add glue later.

    How do I make the belly pan?
    I have few options and few problems here:
    1. to make the belly pan as a hollow box of balsa glued to the epoxy
    2. to glue sheets of balsa on the epoxy and than to sand it
    3. in any case the front pan will be hollow box because of the curvature

    Thanks
    Alex
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    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  14. #64
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    RE: Goldberg super Chipmunk build

    OK this is the last chance to tell me its not a good idea to do a belly pan this way...
    I'm gonna put the fiberglass with epoxy and to this I'm gonna add the balsa scraps, sand them to fit and sheet on top.
    a great method i learned here to cut fiberglass cloth when its between two pieces of paper, comes out with beautiful fringes.
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    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  15. #65

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    RE: Goldberg super Chipmunk build

    Alex7403: Looking good. Im going to use the plastic bellypans. But I did make the balsa wingtips and hollowed them out. I got in a few hours in on my chippy. Got the wing center glassed and the wing bolted on to the fuselage. I have a few pictures of where im at. LOl this is kinda like a build a long. Good luck with your belly pan. Give us close ups. The one im building now is for a friend, if your balsa belly pan works I might try to do it to.
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    Humilitas occidit superbiam.

  16. #66
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    RE: Goldberg super Chipmunk build

    Dan Its a beautiful airplane when its standing like this with the wing attached I hope to see mine like this soon.
    Your build is clean without glue smears.

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    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  17. #67
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    RE: Goldberg super Chipmunk build

    I have found out that some times you can do a better jub with out 100 people telling you what to change Looks good.Going to be a fine looking bird and a great flier.
    Larry K

    Just for the heck of it I use Fiber Glass dry wall tape, easyer to work with, and if you break there your not going to rebuild any way.
    Larry K
    Sig Brotherhood # 1 Sig Kadet Brotherhood # 4 WACO Brotherhood #34 Cub Brotherhood 14

  18. #68
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    RE: Goldberg super Chipmunk build

    I decided to use three line fuel system with engine mounted on the side and pitts muffler.

    As I see it the hole in the fire wall for the tube to the muffler should be lower than the one that goes to the carb and the fill hole should be on the other side of the engine mount.

    Question:
    Is this the best setup?
    Because now the lines on the tank side of the fire wall would cross each other, I'm trying to make the feed line as short as possible and the line to the muffler can be a bit longer if it sits higher on the tank stopper.
    Or maybe to make the feed to card on top and the vent underneath it in the tank stopper?


    Besides that I did another LG bracket in the fuselage in case the LG in the wings will fail (last pic).
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    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  19. #69
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    RE: Goldberg super Chipmunk build

    OK fuel tank issue solved with sticks and added a case for the battery to be held with rubber bands, didnt see in the plan that the tubes going through on hole in the center.
    did also T nits to hold the cowl and alternative LG mount under the fuel tank in case I wont be able to fix the LG mounts in the wings..
    I'm doing the upper fuselage sheeting.
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    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  20. #70

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    RE: Goldberg super Chipmunk build

    Alex7403: Looks pretty good! I too have completed some more on my chipmunk. I fuel proofed the tank compartment, installed the fuel tank,
    and sheeted the front and back turtle decks. I am probably going to go with a two line system. I am going to use the slimline excel fueler. I am using these on my h9 edge 540 and my World Models midget mustang and they are awesome. They are a bit pricey but make up for it in ease of use.
    Here is the link to them if you are interested.
    http://www.slimlineproducts.com/onli...cel_fueler.htm
    Humilitas occidit superbiam.

  21. #71
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    RE: Goldberg super Chipmunk build

    Thanks Dragonov3,
    I had bad experience with these fuel fill valves from dubro and GP they leak after a while, these valves is just another thing that can go wrong in my opinion.
    My intention is to use two fuel dots - one for fill and the other with a T on the line to the bison pitts muffler.
    I did the turtle deck and now doing the the front sheeting, and some glue got to the fuel line and it got glued to the fire wall, its not biggie but to remove the tank i will need to drill the fuel line from the fire wall first, oh well how can we do without mistakes...[:-]
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    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  22. #72
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    RE: Goldberg super Chipmunk build

    Houston we have a problem

    The engine mount I'm gonna use is GP 40-70 and its short, If I'm gonna mount the tower hobbies 75 on it I will have to drill the holes for the engine mounting screws in such way that the engine is sitting on the edge of the mount.

    I want to tap the screws in to the mount.

    I can move the engine 1/4" back but then I'm loosing 1/2" of where the cowl supposed to be.

    The mounting screws in the firewall I cannot change.

    Question: Can I just mount the engine as seen in the picture?

    Thanks
    Alex
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    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  23. #73

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    RE: Goldberg super Chipmunk build

    Alex7403: Is that the position on the engine mount in relation to the backplate according to the plans? I would move it back a little so you have a little more meat to attach to. Was the original mount too small? There is a plywood spacer plate that comes with the kit that would allow you to movethe engine a little further back on the mount.
    Humilitas occidit superbiam.

  24. #74
    Alex7403's Avatar
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    RE: Goldberg super Chipmunk build

    thanks dragonov3 I'm adding a plate.
    I didnt use the supplied hardware because it looks too cheap and weak, this plastic mount will not hold anything.
    the supplied T nuts couldn't penetrate through plywood so i just put all of it in a bag and try not to use it.

    Ultra Sport Brotherhood #3.
    Ya know, a cat is longer from head to tail than from tail to head.

  25. #75

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    RE: Goldberg super Chipmunk build

    I had the same wing half miss match on my chip. I ended up aligning the spares and the LE and sanding the other TE to make the two halfs match the plans. I also had some seriously warped wood in this kit, much worse them my previous Four Star build.


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