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WACO YMF

Old 04-07-2007, 08:22 PM
  #1876
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Default RE: WACO YMF

Bob,

That's a mighty pretty UMF you have there. If you order the cowl from either Stan's or Fiberglass Specialists, I don't know if you get the UMF cowl, or the YMF variant. Maybe you can specify which one you want. Even the manufacturers have it bass-ackward. COX advertises a YMF, but you get the UMF. The photo on the Pica box shows the UMF as does the PLAN template. It's a minor point, but it is a valid point. Where did you get your wheel pants? I like the front cockpit cut out that you did. I use the Tonneau cover on mine (all of them).

I finally got the forward part of the fuselage sheeted this evening, and will start laying the stringers in tomorrow afternoon. I think that I will go ahead and cover the fuse and the tail feathers before I start framing the wings. I'm going to deviate from the standard wing mounting system, and go with something that looks a little more scale like. I am doing the pads for the flying wires as well (while I can get to them). I have decided to use pull-pull on the Elevator and Rudder. I think that the full scale uses pull-pull to a bellcrank in the wing, and uses a concealed pushrod out to the aileron. This may not be too difficult to accomplish (the concealed horn and pushrod). Anyone have any thoughts on this?
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Old 04-07-2007, 10:35 PM
  #1877
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Default RE: WACO YMF

Master Chief, The Ymf uses a bell crank-type linkage at the inboard end of the bottom aileron, with an exposed "tie rod" type arm from the bellcrank to the aileron surface. It allows for differential throw with a direct link to the stick via cable/pulley. I can't remember who posted it, but there's a really good picture in this thread quite a few pages back. This is what I can find in my pics:
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Old 04-07-2007, 10:51 PM
  #1878
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Default RE: WACO YMF

Master Chief,

I was back at the Creve Coeur Airport today and was able to take a photo of the airleron bell crank with the cover off. A previous photo showed a crooked pushrod (to clear the airleron spar), this one has a straight pushrod. According to the WACO authorized mechanic, the pushrod varied depending on the particular plane. Both planes shown are UBFs and the YMF is similar according to the mechanic. The push rod to the control stick is the brownish one on the right side of Picture 1.
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Old 04-07-2007, 10:59 PM
  #1879
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Default RE: WACO YMF

John, great pics, just what I remember seeing a while back. Man, I'd love to wander around that place.


What the heck language is Creve Couer (French?) and what does it mean?
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Old 04-07-2007, 11:01 PM
  #1880
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Default RE: WACO YMF

While I was at the airport today, the WACO mechanic informed me that a Full size WACO fly in will be held at Creve Coeur Airport, home of the Historic Aircraft Restoration Museum (HARM) and also known as Dauster Field. It will be held June 14 (Thurs) thru the 17th (Sunday - Fathers day). Creve Coeur Airport is located just west of St. Louis, MO. The link to HARM is http://www.historicaircraftrestorationmuseum.org/ . For those of you contemplating a trip to the midwest, this may be an opportunity to get the photo documentation you may need of that WACO you are building. I also posted this in the Events forum.
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Old 04-07-2007, 11:41 PM
  #1881
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Default RE: WACO YMF

Ken,

My understanding is that it is French and means Broken Heart. The City of Creve Coeur uses a broken heart as its official "symbol".

The CC Airport is great, especially in the summer weekends when many of the private hangers (about 100) are open and you can talk with the owners of the different planes. Most of the hangers have 2 or 3 aircraft in them and I think many of the planes are pre 1955 (the Classic period). I have seen a P-51 do a test flight but not parked any where. There is also a SNJ (Navy version of the AT-6) that you can get a ride in, same with a Stearman. Monocoupes and WACOs are plentiful along with many other historic aircraft. The mechanic informed me that a few of the WACOs on display in the museum were "scratch built" from the original WACO plans, approved from the original ATCs and are certified airworthy and are maintained in flying condition. It is a neat place. Too damn cold and windy today, so most of the people were in the Airport office b-sing.
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Old 04-08-2007, 08:05 AM
  #1882
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Default RE: WACO YMF

John,

Thanks again for the great photos. I think that I will attempt to replicate the slot and the short pushrod. Don't know about the Ball and socket though. I should be able to use a 90 degree bellcrank and drive it from the servo, and to the short arm pushrod. May be too much sugar for a nickel though. I was hoping that by this time in my life, things would be a little more simple, and here I am, trying once again to scale out a freaking model plane. It's worth the effort though.

Ken,

Did you make templates for the fairings that you made?

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Old 04-08-2007, 09:24 AM
  #1883
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John, That's got me looking at the possibilities of getting the time off and looking at maps to see how long a drive it is. I was planning to go to the Gathering of Mustangs and Legends in Columbus this fall, but I'm ready to bag that if I can make it to Creve Couer. Damn sight rather look at a bunch of WACO's than P-51's; I've already seen a few of them.

Master Chief, do you mean templates for the panels on the fuse and at the tail? I made patterns for them, but I reused them for other things after I cut the pieces.. Are you thinking of including them in the template set? I can make new one quick enough if you want them. Do you think the ARF dimensions are close enough to the kit considering all the other differences?
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Old 04-08-2007, 12:09 PM
  #1884
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Default RE: WACO YMF

Stickbuilder I got the wheel pants from Fiberglass Speciality. I used the cowl that came with the kit but thinking of getting a fiberglass one. Like I said it need a pilot & a radial engine front yet . Too many project trying to finish a 1/4 scale Lockeed Vega by end of may.







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Old 04-08-2007, 02:08 PM
  #1885
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Default RE: WACO YMF

Obo,

Here are a few sitesI have found for dummy radials;

Williams Bros – http://www.williamsbrothersmodelproducts.com/ Appear to have the Wright J-5 9 Cylinder, Wasp 9 Cylinder, Le Rhone and Gnome engines and cylinders. You could probably make a Continental or Jacobs from the individual cylinders, but would have to make the crankcase from scratch.

AeroTech Models - http://www.aerotechmodels.com/ Both 7 & 9 Cylinder Resin cast engine kits in diameters of 4”, 6.5”, 8” and 9.5”. The 6.5” is 1/6th scale and the 8 is 1/5th scale.

Fiberglass Specialties - http://www.fiberglassspecialtiesinc.com/ has 7 and 9 cylinder engines. “ Front half only, intended for cowled applications, not highly detailed”. Don’t know anything about these.

Top Flite - http://www.top-flite.com/index.html Listed under Accessories, Vacuum formed 9 cylinder in 1/7th, 1/8th and 1/5th scale.

If you have any others, please post them.
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Old 04-08-2007, 02:28 PM
  #1886
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Default RE: WACO YMF

Ken,

The mileage chart from my road atlas says it is about 722 miles from Charlote, NC to St. Louis, MO., so a little less for you. A quick look at the map suggests I-40 west to Nasville, TN, I-24 north to I-57 north to I-64 west to St. Louis and you are in the ball park (Cardnials that is). Plenty of hotels less than 10 miles from Creve Coeur Airport. I'll do some checking later to see if camping on site is available if you are interested.

BTW, Did you see the articles on the Piper J-3 and L-4 in the March issue of Flying Scale Models? Center spread is a 3+ view of a L-4 and about 7 pages of articles and photos of the L-4. Also a review of the Hanger 9 J-3 ARTF.
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Old 04-08-2007, 03:11 PM
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Default RE: WACO YMF

Yea I knew about Topflite & Williams Bros but the others I haven't try them thanks for the info. I have a Topflite radial that was in my giant Corsair. I may have to cut it down but I think it will fit I know it won't be exact but it will look good. A friend of mine has a new in the box Pica Waco 1/5 scale . If I can get that I may wait & do that one with a radial & lots of scale detail. Thanks for the info Skylarkmk1.



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Old 04-08-2007, 04:48 PM
  #1888
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Default RE: WACO YMF

Yeah, Mapquest says about the same, and that's basically the route it recommended. I figure 11 hours drive time if I don't hit any red lights (or blue ones). Sure would like to see that fly-in. I found an aerial view of the airport via Mapquest, it's just south of the Missouri River, off hiway 364, right?

Obo, the aerotec dummy is what I bought for my plane, kind of pricey, but can be made to look very nice.

I got everything doped today, one coat. The wife and girls went off to the M-I-L's today so I drug out the dope while they are gone. I hope the fumes dissipate a little before they get back.
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Old 04-08-2007, 07:10 PM
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Default RE: WACO YMF

That a great looking engine Khodges. That looks like the way to go for dummy engines. I was looking at their site ,may go that way for this lockeed too. That looks like a gaser you got in your waco what size you running?




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Old 04-08-2007, 07:26 PM
  #1890
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Default RE: WACO YMF

Bob, I'm putting a G-26 in her, should be plenty of power, according to the report that MAN did on the plane when it came out.

You said you were building a 1/4 scale Vega? Are you doing it from plans, or do you have a kit. Are you gonna do it like "Winnie Mae" (Wiley Post's plane) The only kit I've ever seen of the Vega is an Ikon N'West. They are supposedly converting the kits to laser cut, and the Vega is about $475 for the kit (102 inch wing). That's a right smart size model. What are you gonna power it with?

I'm going to start rib tapes tonite, 1st coat of dope is dry. Dope penetrates this paper tape I'm using, so it will bind well to the covering with a couple more coats of dope over it
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Old 04-08-2007, 08:20 PM
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Default RE: WACO YMF

Ken,

Yes, that is where the CC Airport is. There is easy access from I-70 and just a extra 2 roads from I-270, either way it is easy to get to. Less than 1o minutes from the major highways. I would figure on about 13-14 hrs of drive time, base on my experience as an OTR Truck driver.
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Old 04-08-2007, 08:21 PM
  #1892
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Default RE: WACO YMF

Well, don't hold your breath, but there is all good likelyhood that Stan's will have the YMF cowl before long (the correct one) and there is a possibility that one may soon be available in carbon fiber. We will post the information as it becomes available.

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Old 04-08-2007, 09:32 PM
  #1893
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Default RE: WACO YMF

Yes Khodges It an Ikon kit but it might as well be a scratch built if you ever built a Ikon b4. All you get is the balsa & a set of planes . I plan to run a Fuji 32 but may have to go to a 43 cc to help with the CG. Yes it is a big plane 102 in. but that perty much all I have is 1/4 scales planes . For the exception of my waco & a spitfire.& a 1/5 scale Stearman.
I have 3 of them G26, its is a very prowerful moter. One's in a 1/4 Gee Bee Y, another is in a 12 lb Super Stearman ,& one in a 82 inch AT6 Texan. They are great motors & I never have had any trouble out of them. I will send a pic of the lockeed progress if you want. Not sure a lockeed would fit on a waco site. Oh & yes It going to be in the " Winnie Mae"

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Old 04-08-2007, 09:33 PM
  #1894
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Hey Ken, as best as I can remember(4 decades at least) broken heart(Creve Coeur) comes from the indian maiden that jumped to her death because of her broken heart and the lake that then took the shape of a broken heart. Part of my life was spent not too far from there. Jim #9
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Old 04-08-2007, 09:57 PM
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Default RE: WACO YMF

Thanks, all; Bob, I'd like to see the Vega, it won't kill anybody to show a "one-winged airplane" here once, and they ARE from the same era.

Check out this site, it's a quick read, and interesting: www.aopa.org/pilot/features/2002/waco0210.html
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Old 04-08-2007, 10:12 PM
  #1896
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Default RE: WACO YMF

Ok here they are, hope nobody minds Its got one wing but its a big one.




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Old 04-08-2007, 11:54 PM
  #1897
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Default RE: WACO YMF

STICK- Tell us how much you cut out of F-7B for fuel tank installlation. I have all the F-#B formers cut and modified as prescribed except for modifying that one. Looks like you have a bolt-in carry-thru at your F-7B mod. I'm ready to glue up the crutch and B formers as soon as I modify F-7B. Thanks.
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Old 04-09-2007, 04:52 AM
  #1898
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Quote:
ORIGINAL: damifino

STICK- Tell us how much you cut out of F-7B for fuel tank installlation. I have all the F-#B formers cut and modified as prescribed except for modifying that one. Looks like you have a bolt-in carry-thru at your F-7B mod. I'm ready to glue up the crutch and B formers as soon as I modify F-7B. Thanks.
Jay,

I cut the opening 3" wide, and all the way to the top. The former already has/had an opening in the lower part, so I cut the remainder out to enable mounting the tank from the rear. I built the bolt-in carry through in order to restore the structural integrity once the tank is installed, and to enable me to remove the tank for maintenance, if required. I used blind nuts and socket head bolts to make life a little easier. This is a fairly high stress area of the model, or I probably would not have added the carry through. It is 1/8" aircraft ply, and should be reasonably strong.

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Old 04-09-2007, 04:57 AM
  #1899
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Default RE: WACO YMF

Bob,

That is a nice Vega. You are absolutely correct in you assessment of Ikon N'West models. Back when Emil was doing the kitting, you basically got some wood and a line drawing. The instruction sheet was a joke. They are true builders kits. I will (just this once) include a photo of the Corben Super Ace that I did from Ikon. Took a long time, but it is a great flying model. I think that Emil only sold a couple of these. You never see them.

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Old 04-09-2007, 05:35 AM
  #1900
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Thanks Bill. I'll carry on, sir.
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