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Thread: WACO YMF


  1. #13051
    acerc's Avatar
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    RE: WACO YMF

    George , That's a question better answered by Bill-stickbuilder.
    But I do believe there is one close if not 1/4. I think 23% or 27%. Jump in here Bill.
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

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    RE: WACO YMF


    ORIGINAL: skylarkmk1 Dave, The dimensions (taken from the 1/5 Pica plans) of the rudder trim tab are; Top – 5/8” Bottom – 5/16” Height – 2” Location – 4-3/8” up from the bottom of the rudder along the hinge line to a line at right angles to the hinge to the bottom of the tab

    John:

    What 1/4 scale planset do you have?

    Ed
    Ed Clayman,
    FliteMetal.com

  3. #13053
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    RE: WACO YMF

    Just took a look Barth has a 1/4 scale
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

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    RE: WACO YMF

    Another question, if I may....

    Was the fabric on the fin stitched? (YMF 5) It's very hard to tell on the photos I've seen. Some look as if there is no stitcing, others, I'm not too sure.

    Cheers,
    Dave.
    W/B #180

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    RE: WACO YMF

    Hi Dave, The fabric on all the tail surfaces is stitched. Mitch

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    RE: WACO YMF

    Thank you, Mitch.

    Cheers,
    Dave.

  7. #13057
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    RE: WACO YMF

    Ok gents, this isthe right gear flair. Not quite done yet. Have two more layer's of glass to add to stiffen it up a little.Thentrim and sand.
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

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    RE: WACO YMF

    ORIGINAL: acerc Ok gents, this isΒ*the right gear flair. Not quite done yet. Have two more layer's of glass to add to stiffen it up a
    little.ThenΒ*Β*trim and sand.
    Robert:

    Is this rubberized fillet base expected to provide a mroe flexible...compliant interface with other surfaces like the cabanes, struts, and
    landing gear fillet?
    Ed Clayman,
    FliteMetal.com

  9. #13059
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    RE: WACO YMF

    ED, all that is there now is the glass. All that mold material has been removed. So what ever the4 plies ofglass measure's, is it. Should be more than flexible enough to handle the movement.
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

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    RE: WACO YMF

    Here is a shot of it twisted. Flexible enough and stiff enough to stay put when screwed down. Before the next two plies I will add a 1/4 inch aluninum around the perimeter to reinforce the mount for the screws.
    Still need to clean the backside. Should have let the mold material cure for two day's but could'nt wait. As soon as it was firm went to work.
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

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    RE: WACO YMF

    Robert,

    Obviously I overlooked what to you was obvious and not explained. After you applied the rubber fillet shaping material...did you then
    male mold 2 to 4 ounce to sq yd glass cloth with epoxy "over" the top of the rubberized fillet? Continued to apply until satisfied it was
    strong/thick enough...?
    Ed Clayman,
    FliteMetal.com

  12. #13062
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    RE: WACO YMF

    Ed,

    I do not have a 1/4 scale plan of a YMF. The 1/4 scale plans I do have are the UPF-7 by Jerry Behrans (I think I found it on e-bay) and the CTO by Larry Scott from Model Builder plan # 11811 (also on ebay). The UPF 1/10 Drawing by N. Karstens (Bobs Air Doc) is a good suppliment to any UPF builders plans.
    John F Howard (aka skylarkmk1)
    AMA 10955, WACO Brotherhood #26, AWC, NWC

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    RE: WACO YMF



    Pretty much except  I'm not using epoxy. I'm using a clear rubber product. I'll give you a hint as to what it is. It is thinable with Toluene.

    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

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    RE: WACO YMF


    ORIGINAL: skylarkmk1 Ed, I do not have a 1/4 scale plan of a YMF. The 1/4 scale plans I do have are the UPF-7 by Jerry
    Behrans (I think I found it on e-bay) and the CTO by Larry Scott from Model Builder plan # 11811 (also on ebay). The UPF 1/10
    Drawing by N. Karstens (Bobs Air Doc) is a good suppliment to any UPF builders plans.
    I think I will stick with the Barth 1:4 scale YMF-5. Overall its priced right for all the contents and attention to detail. Hoping it builds
    out as fast as people say it does.
    Ed Clayman,
    FliteMetal.com

  15. #13065
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    RE: WACO YMF

    Dave,

    Yes the fabric is stitched on the fin. The photo shows the approximate stitch lines on NC 14081 in red. Normally any point of contact on a flying surface is stitched and taped (ribs) and on the fuselage any point of contact with the frame work is taped.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Hf99608.jpg 
Views:	8 
Size:	84.9 KB 
ID:	1627017  
    John F Howard (aka skylarkmk1)
    AMA 10955, WACO Brotherhood #26, AWC, NWC

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    RE: WACO YMF

    Robert where might I obtain a copy of the 1/4 scale plans. Definately willing to cover all expenses.
    George Waco brother#209

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    RE: WACO YMF

    Good day all,

    I was wondering if I may pick some brains with regards to the powering of a 33% Waco from AMR.

    The kit has been purchased and delivered, however we are still deliberating on the engine...the only certainty is that it is going to be a Moki.

    The question I wish to ask is whether the Moki 150 has the guts to get the AMR kit off the ground.  My father and I do not want to overpower the model, but rather wish for far more scale characteristics.

    Can anyone offer some advice.

    Regards,

    Jason and Ken Mansfield

  18. #13068

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    RE: WACO YMF

    The Moki 150 will get it off the ground ok but you'll be on the low end of the power curve. You'll be much happier with a 215 or 250. It does'nt need ALL the power avialable with the larger engines but with judicious use of the throttle it's a perfect match.
    See the Model Airplane News website or Youtube for videos of my 33% with a 215. Also see my article in the Dec, 2010 issue of Model Airplane News of the whole setup. Mitch WB 100

  19. #13069
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    RE: WACO YMF

    rccrasher65, like I said before I don't really know enough about availability to answer that question.
    Could someone jump in here and advise.
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

  20. #13070
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    RE: WACO YMF

    Well I just got my wire in from Taconic and this stuff  is going to work well. FYI, I Figure I need close to 20ft. Which only weigh's 3.7oz.
    Size wise look's perfect for the Pica 1/5 scale. To small for larger scale's. Would probably be ok for 1/6 also.
    If any one is interested in some PM me. I only have 880 ft. LOL  Your welcome to it.
    Size is, .103 x .028 gauge silver flat wire.
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

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    RE: WACO YMF

    I have a 1/5 WACO and I had to refurbish the cowl. Now I have to finish painting it and I am wondering if there is an easy way to put the darts on the cowl blisters. I don't have the decals and I really don't want to paint each one by hand if I don't have to. I would appreciate any suggestions.

    seedy barker

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    RE: WACO YMF

    Robert, Is that stuff "springy tempered" or is it soft and bendy (no pun jokes!). I'll buy 50 ft from you. Coil some up and send to Mitch Epstein 651 N. Main St. Leominster, Ma.
    I'll send a check out to you.....Thanks. Mitch WB100

  23. #13073
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    RE: WACO YMF

    Hello all

    Just got my computer back today it was struck by lightning last Thursday and in the shop for repair[:@]. I have to catch up on some reading about five pages. I didn’t know I was RCU junky LOL. Well, back to my reading.
    Dan Hudson WACO Brotherhood #45
    GIT-ER-DUN \"Build a WACO\"

  24. #13074
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    RE: WACO YMF

    It's not spring tempered. I'm not looking to sell, you all can have the wire, I have what I need. Just pay shipping?At .018oz per foot how much could they charge, 2or 3 bucks.
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184

  25. #13075
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    RE: WACO YMF

    Ok, How stiff it is seem's to be the question. Well its somewhat stiff but bendable. The closest i can think of is a metal clothes hanger.
    Robert
    Cub Brotherhood #3\\ Ryan STA Brotherhood #4
    Corsair Brotherhood #56\\ Waco Brotherhood #184


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