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  1. #1251
    Kellermann's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Nice job, anthony!! ya done good!~

    Agree, if it wasn't for the leaves and tall grass, one could easily mistake it ofr the real one. Put it on a recently mowed lawn or grassy runway, and you'll fool everybody around.

    Now it's time to think of flying it!!

    Congrats
    Marcus from Brazil
    A good landing is one you could walk away from. A spectacular landing is when the airplane is reusable...!

  2. #1252
    WacoNut's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Thanks Bob and Marcus,
    The build was a real adventure that I am glad is behind me, the best part of it is that I met some great guys while participating in this thread and without their hlep it would not have been possible.
    Anthony
    WACO Brother #30 Cub Brother #17
    It's not the hours you put in It's what you put into the hours.

  3. #1253

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    RE: Jim Pepino's YMF-5 Waco

    Anthony,
    Simply stated, AWSOME !!!! You did an incredible job on the Waco. Make sure you let us know how the maiden flight goes.
    Scott
    Waco Brotherhood #49

    I buy, I build, I fly, I crash. I buy, Ibuild, I fly, I crash. I buy, I build,................

  4. #1254
    WacoNut's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Thanks Scott,
    You guys definetly have not heard the last of me I will get the envelope in the mail today to send to you, sorry about the delay.
    Anthony
    WACO Brother #30 Cub Brother #17
    It's not the hours you put in It's what you put into the hours.

  5. #1255

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    RE: Jim Pepino's YMF-5 Waco

    I'm not done fighting this model yet. Some months ago I was going to substitute bent AL for the cabane struts. Then I changed my mind and did it with music wire. Right now, I'm trying to fit the upper wing and have a hell of a time getting all the bent wires to mate the wing at the right place. I will get yet, but wonder if everyone else had to put up with this. I will weld on small pads for the wing bolts.

  6. #1256
    Big_Bird's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    I have to admit that the cabane struts were a bear to do and to get aligned. I spent many hours bending and fitting the the pieces. Never again will I tackle a project like this one. Just keep plugging away and you will eventually succeed.

    Go back to page 6, post 129 and there you will find some information on setting up the cabane struts.
    http://www.rcuniverse.com/forum/m_39..._6/key_/tm.htm
    Ken
    WACO Brotherhood #70, Arlington TX home of the Dallas Cowboys, SupBowl45, Texas Rangers, World Series 2010, 2011

  7. #1257
    WacoNut's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Hi Guys,
    I didn't have much trouble with this actually I did things a bit differently, I built in mounts just like the "N" struts and used the aluminum tubing from GTM. I did use the 5/32 wire where it goes into the fuse. I just bent the wire per the plans and cut it off with about 3" left to go inside the aluminumm tube and secured it inside the tube with JB Weld. I added the top wing center section jigged into place and just built the struts and bolted the tops in place and let the JB Weld cure overnight and it worked out great.
    I always struggle trying to get correct bends in wire, if there is only one bend involved it isn't a problem, 2 or more and I am screwed.
    I am sure you will get it but like everything else with this plane it takes time and patience.
    Later!!
    Anthony
    WACO Brother #30 Cub Brother #17
    It's not the hours you put in It's what you put into the hours.

  8. #1258

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    RE: Jim Pepino's YMF-5 Waco

    Guys,

    I'm working the baggage door. I have tail servos and switches in there. Somewhere I read here of magnets being used to hold the door down. Do these magnets have any effect on receiver, servos, or wiring? just wondering. Thanks.

  9. #1259

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    RE: Jim Pepino's YMF-5 Waco

    Guys,

    Thanks for the cabane comments. I've got it, I think. The only problem is I formed everything out of 5/32 and welded it. Now I need to slide the aluminum strut material into place. It needs a pretty good cutout at the bottom end for the rear to clear the welded brace, and on the front strut the brace ia at the top. So lots of trimming material out. Wish I had a Bridgeport end mill.



  10. #1260
    Big_Bird's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Magnets will not bother your radio.
    Ken
    WACO Brotherhood #70, Arlington TX home of the Dallas Cowboys, SupBowl45, Texas Rangers, World Series 2010, 2011

  11. #1261
    WacoNut's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    I used 2 sets of rare earth magnets purchased at Radio Shack. I have never experienced radio interference from them in the past. I wouldn't put them up against your switch or servo's but you should not have any issues. The key to the magnets is to make sure you have the polarity correct when you epoxy them in place or they will force themselves apart instead of attracting to each other. For their size they are strong. I have used them for 4 years on my Cub to keep the door/window closed and they have always held good.
    Later!!
    Anthony
    WACO Brother #30 Cub Brother #17
    It's not the hours you put in It's what you put into the hours.

  12. #1262

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    RE: Jim Pepino's YMF-5 Waco

    Hey Anthony,
    I recieved the Waco logo's in the mail yesterday. They look great!!
    I'll be glad to forward the one's I don't use to the next needy builder!!!
    Thanks
    Scott
    Waco Brotherhood #49

    I buy, I build, I fly, I crash. I buy, Ibuild, I fly, I crash. I buy, I build,................

  13. #1263
    WacoNut's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    No Problem Scott,
    Just paying it forward thanks to Ken They are already clear coated so just trim them out leaving approx 1/32" around the edge and apply.
    Later!!
    Anthony
    WACO Brother #30 Cub Brother #17
    It's not the hours you put in It's what you put into the hours.

  14. #1264

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    RE: Jim Pepino's YMF-5 Waco

    Guys, I got the cabanes done enough to start setting it up. So far I have the horiz stab matching the thrust line at zero, lower wing in the saddle at zero, and upper wing at zero. I'm taking a little liberty here. Both upper and lower wing right halves are about 1/2-2/3 degree off in same direction when everything else is at zero. I thought I had them but something got away on me. In the plan view, the lower wing is dead nuts square with the centerline. The upper wing leading edge is out of parallel with the lower maybe 1/4 inch over the full span. No struts attached yet. Feels like I can tug it back where it needs to be.

    I don't trust the plan and could use some guidance on reasonable settings for stab and both wing incidences. Same for engine down thrust. It's a G-62. If the info is here, I somehow missed it.

    If I remember my Ikon Waco UPF-7 incidence was about zero for the lower, and minus one for upper. Nothing on stab. Those numbers came from a thread somewhere. I didn't really have any basis for it. It was just a general biplane type recommendation.

    Thanks again,
    Mike Hopkins

  15. #1265
    WacoNut's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Mike,
    Maybe Ken can help you out here, I have mine set a 0/0 top and bottom. I can't remember what Ken set his up for. Also mine is adjustable on the top wing if I have trim issues, I can adjust my top wing +/- 2 deg.
    Anthony
    WACO Brother #30 Cub Brother #17
    It's not the hours you put in It's what you put into the hours.

  16. #1266

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    RE: Jim Pepino's YMF-5 Waco

    Thanks Anthony. I can shim mine as required. i'll stay tuned.

  17. #1267

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    RE: Jim Pepino's YMF-5 Waco

    All,

    On incidence, I found Big-Bird's post. Zero stab, zero lower and minus one upper. That's what I'm going to do. Thanks.

  18. #1268
    WacoNut's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Mike,
    I want to get some input from Ken now that he has several flights on his Waco and find out how the trim is, whether it changes pitch with aplication of power or just speeds up. If it is trimmed properly it should just speed up under power with little tendency to climb. Ken was going to a fly-in over the weekend and I am sure he put some more flights in on the Waco.
    Later!!
    Anthony
    WACO Brother #30 Cub Brother #17
    It's not the hours you put in It's what you put into the hours.

  19. #1269
    Big_Bird's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Yes, I'll get back later today with more information. I want to put the plane together and re-measure the incidence angles.
    Ken
    WACO Brotherhood #70, Arlington TX home of the Dallas Cowboys, SupBowl45, Texas Rangers, World Series 2010, 2011

  20. #1270
    Big_Bird's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    OK, I used my Robart incidence meter. With the fuselage at zero the horizontal stab is zero. The top wing is + 1/2 and the bottom wing is also + 1/2. That was not my intention but that's the way it turned out. However, it flies great. It does not change trim with change in throttle position.

    I do have to fly with a little down elevator. The correction would have been to put + 1 degree in the stab but it's too late now. It flies hands off at 1/4, 1/2, or full throttle. I really got a lot of complements on it at Austin this weekend. I took 3 planes and flew each one 3 times. The Jungmeister is the most aerobatic and the Super Decathlon is the fastest and also highly aerobatic. I received the Best Military plaque for the Jungmeister.

    The first photo shows my air force. The 3rd and 4th photos show the position of the Robart meter. The 5th photo shows the down trim in the elevator.

    Due to the fact that the ailerons do not have enough travel the plane rolls very slow. I have just put a lot of differential throw in the ailerons. About twice as much up as down. I'll try this out this coming weekend. The last photos show this throw.
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    Ken
    WACO Brotherhood #70, Arlington TX home of the Dallas Cowboys, SupBowl45, Texas Rangers, World Series 2010, 2011

  21. #1271
    WacoNut's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Thanks for the helpful info Ken,
    I have my plane set at 0/0 on the wings and +1 on the stab, I think I may have a little more throw in my aileron's also. I also plan on setting some differential in the aileron's. Very nice looking collection of Big_Birds you have there The 42% Decathalon will fit right in.
    Later!!
    Anthony
    WACO Brother #30 Cub Brother #17
    It's not the hours you put in It's what you put into the hours.

  22. #1272

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    RE: Jim Pepino's YMF-5 Waco

    Big-Bird,

    Appreciate the information. I think I'll leave the wings at zero and go with the one degree stab. Did you put any down thrust on the engine?

    This might be a "dumb" question...but how do you decide whether it's more up aileron, or more down? I understand more is needed to improve the roll, but it could be done either way. Or am I missing something?

    I found your drawing of the strut end fittings and am in the process of fabricating them right now. Just like your plan.

    Thanks,
    Mike Hopkins

  23. #1273
    WacoNut's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Mike,
    I will help Ken out here(correct me if I am wrong). The ailerons will bottom out on the down travel and won't going up, also when you put more up travel into the aileron it will cause the plane to yaw in the direction of the bank which is desireable. You can correct an adverse yaw condition by putting this differential into the ailerons. The aileron that is going up a greater ammount than the aileron than is going down creates more drag causing the plane to yaw in that direction.
    Hope that helps!!
    Anthony
    WACO Brother #30 Cub Brother #17
    It's not the hours you put in It's what you put into the hours.

  24. #1274
    Big_Bird's Avatar
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    RE: Jim Pepino's YMF-5 Waco

    Mike, no down thrust but 2 degrees of right thrust. Anthony is right about the differential ailerons. Good deal on the strut end fittings. They have worked out fine. I only have to put in 4 4-40 screws per N strut.
    Ken
    WACO Brotherhood #70, Arlington TX home of the Dallas Cowboys, SupBowl45, Texas Rangers, World Series 2010, 2011

  25. #1275

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    RE: Jim Pepino's YMF-5 Waco

    Anthony & Ken,

    Thanks for the explanations. Right now I have no down thrust and about two degrees right. It was a guess on my part when I made the removable mounting block. Looks like I'll leave it as is.


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