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RE: WACO YMF - 11/3/2012 11:38 PM   
mrdhud



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From: Bartow, FL, USA
Status: offline 		Dave,
Glade you made it home OK long drive. Sure enjoyed you and the Waco to bad it wasn’t this weekend it was a beautiful day today.
I was working in the shop about 2:30 today and had a Stearman (I think) flying right over the house it was pretty neat got the camera out and took a video. If I get a chance I’ll post the video.

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RE: WACO YMF - 11/4/2012 12:38 AM   
Dash7ATP



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quote:

ORIGINAL: aminiet

Joe.

The purse handles were U shape and I simply used a razor blade to split them open, then glued the stiching from the back side to keep them from becoming undone. there are several pictures on page 500 that will give you a better idea of the finished job.


That looked very good. Time to go shopping at some thrift stores!

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RE: WACO YMF - 11/4/2012 12:54 AM   
mrdhud



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From: Bartow, FL, USA
Status: offline 		Here's the video shop over my house today. I be leave it's a Sterman

http://www.youtube.com/watch?v=SUpAOknbh68&feature=youtu.be

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RE: WACO YMF - 11/4/2012 1:25 AM   
aminiet



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Status: offline 		I do believe it is a Stearman as well. Great video thank you.

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RE: WACO YMF - 11/4/2012 11:24 AM   
hopkimf


 

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From: Batavia, IL, USA
Status: offline 		Greetings,

I just started my second Waco. It's a Barth 1/3. Had been in storage for a few years. Don't know how old it is. Bought on RCU. Some mice lunched on spars and sheeting. Lumber must be metric, but I'll work around it. First Waco was a Pepino 1/4. It was a real pain, but I got lots of good help here. The Barth manual is pretty skinny. Parts list is in German. Are there there build threads with lots of photos like the ones by Waconut out there?

Thanks,

Mike Hopkins Waco Brotherhood # 132

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RE: WACO YMF - 11/4/2012 11:52 AM   
WacoNut



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Status: offline 		Hi Mike,
Not as many Barth build threads but there are several guys who have built and are building Barth kits that post here. You may just have to prod for pics and help as needed.
Later!!
Anthony

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RE: WACO YMF - 11/4/2012 12:37 PM   
Stickbuilder



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From: Wildwood, FL, USA
Status: offline 		It's not the Waco, but here are a couple of pics of the plan that I did, and the first wing panel for the Ryan. I'll get back on the Waco soon.

Bill, Waco Brother #1

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RE: WACO YMF - 11/4/2012 1:31 PM   
Dwhart24



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From: Oviedo, FL, USA
Status: offline 		 Dave,

Glad to see you made it home safe. It was good seeing you again this year. One good thing about the wind was being able to BS with the guys more then I normally get to because I'm always on the flight line taking photos. Hope to see you again next year.


quote:

ORIGINAL: mogman

Made it home today from Monster Planes. Too bad about the weather, but still a good time. Already looking forward to next year.

Cheers,
Dave
W/B #180




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RE: WACO YMF - 11/4/2012 1:38 PM   
Dwhart24



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From: Oviedo, FL, USA
Status: offline 		I believe this is the Stearman in your video. It is owned by Robert Varney. This is a shot I took of it at TICO this year. He has offered me a ride in it, I just need to hook up with him and find out when would be a good weekend.


DSC_3933 copy by dwhart24, on Flickr


quote:

ORIGINAL: mrdhud

Dave,
Glade you made it home OK long drive. Sure enjoyed you and the Waco to bad it wasn’t this weekend it was a beautiful day today.
I was working in the shop about 2:30 today and had a Stearman (I think) flying right over the house it was pretty neat got the camera out and took a video. If I get a chance I’ll post the video.




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RE: WACO YMF - 11/4/2012 2:38 PM   
Jim Henley


 

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Status: offline 		Interesting Bill, so you decided to frame up the wings rather than use the Byron foam panels. I have a Byron Staggerwing that needs wing panels due to a crash, that looks like a great alternative.

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RE: WACO YMF - 11/4/2012 3:39 PM   
ceije


 

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Status: offline 		Dave, glade to see you made it home, do hope your trip wasn't too unpleasent with Sandy blowing around. As with everyone else sorry the weather didn't cooperate with the game plan, but it was good to talk with you and see your GREEN MACHINE in the air again. As you said looking forward to next year, its starting to become a regular gettogether. Take care i'll be in touch soon.

regards,
Chris Melhus, ceije 196

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RE: WACO YMF - 11/4/2012 4:23 PM   
ceije


 

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Status: offline 		Bill, or anyone, I need a little help on servos and their use as far as sufficient torque for its application. I had plained to Hitec 5645 servos throughout my 1/4 scale Barth, now I'm rethinking my elevator set up and want to go to a single servo instead of two. The 5645 has 143 oz. of torque at 6.0V. Due to the type of setup I'm thinling of and the space I'll be working in my question is will the Hitec 7245 mini servo with 72 oz. of torque at 6.0V be sufficient for this scale and elevator load or is there a stronger mini servo i can go to the is compatible. When it comes to servo application of this nature and electronics I'm in the dog house.

regards,
Chris Melhus, ceije 196

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RE: WACO YMF - 11/4/2012 5:23 PM   
Stickbuilder



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Status: offline 		Chris,
For the primary controls (rudder and elevator) I would always err on the side of caution and strength and go with the more powerful digital servos. No, the load is not normally that high on something like a Waco, but when you have to make a change in attitude and do it right the heck now..............

Bill, Waco Brother #1

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RE: WACO YMF - 11/4/2012 7:15 PM   
Errol Levin



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Status: offline 		Hi Chris

Why would you want to change the servo set up at all, and then go for a mini servo? Expain your motive and reasoning, and then we would be more in a position to comment.

I am using two Futaba BLS451 servos on my elevator, brushless motors , digital with metal gears each rated at 147oz at 6v.

My belief is to stick with the servo arrangement of the designer. He designed the plane so he should know.

Regards

ERROL #204

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RE: WACO YMF - 11/4/2012 7:47 PM   
ceije


 

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From: cape canaveral, FL, USA
Status: offline 		Bill, Errol, Thanks for the reply, I guess my game plan will be to err on the side if caution.

regards,
Chris, ceije 196

"sometimes you have to build it a little wrong in order for it to look right"-DAVE PLATT-

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RE: WACO YMF - 11/4/2012 11:09 PM   
Stickbuilder



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Status: offline 		Got the top of the wing sheeted and the cap strips on. It'll fly.

Bill, Waco Brother #1

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RE: WACO YMF - 11/4/2012 11:48 PM   
mrdhud



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From: Bartow, FL, USA
Status: offline 		Looking good Bill

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RE: WACO YMF - 11/5/2012 12:11 AM   
rccrasher65


 

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Status: offline 		Bill, wing looks good, she'll definately fly.

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RE: WACO YMF - 11/5/2012 6:34 AM   
Errol Levin



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Status: offline 		Chris

In my humble opinion there are two items on a plane where you do NOT compromise. Servos and batteries. A failure of either can cause your day and your plane to come to an abrupt and expensive ending. I use only high quality top end branded products for both. I also do not believe in making changes to the design of a model that will affect it's structural or mechanical integrity. If the designer says two servos on an elevator, then put two servos on the elevator.

Best regards

ERROL #204

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RE: WACO YMF - 11/5/2012 2:47 PM   
ceije


 

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quote:

ORIGINAL: Errol Levin

Chris

In my humble opinion there are two items on a plane where you do NOT compromise. Servos and batteries. A failure of either can cause your day and your plane to come to an abrupt and expensive ending. I use only high quality top end branded products for both. I also do not believe in making changes to the design of a model that will affect it's structural or mechanical integrity. If the designer says two servos on an elevator, then put two servos on the elevator.

Best regards

ERROL #204

Errol, I do appreciate your concerns, and yes it could lead to disaster. I like to experiment and work outside of the box as they say, this is one reason why my building progress is one step forward two steps back. again thanks for you concern.

regards
Chris, ceije 196


"sometimes you have to buils it a little worng in order for it to look right"-DAVE PLATT-

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RE: WACO YMF - 11/6/2012 5:46 PM   
ceije


 

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From: cape canaveral, FL, USA
Status: offline 		Errol, Bill, I managed to find a little extra room below the stablizer and am going back to the larger servo a Hitec 7954 ultra high torque of about 300 oz. this servo should cover all my sins. Now all i have to do is find the shoehorn to squeeze it in. Sorry Errol I'm still staying with a single servo setup just not a mini servo.

regards
Chris Melhus ceije196

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RE: WACO YMF - 11/6/2012 6:17 PM   
aminiet



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From: humble, TX, USA
Status: offline 		How about a Hitec HS 5955 TG ?

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RE: WACO YMF - 11/6/2012 9:18 PM   
vatorman94


 

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From: steamboat springs, CO, USA
Status: offline 		I am just getting started on my first WACO, a Taperwing CTO (Model builder mag. Larry Scott des.). I reduced plans to 1/6 scale, 62 in. W S , so that it will just fit into my suburban without disassembling it. Would it be a good idea to make the stab solid rather than adjustable incidence for strength? What should wing incidences be? I have built 2 Sig Skybolts and 1 Bob Dively 1/4 scale Skybolt- time to branch out. Will it be considerably more difficult to fly than a Skybolt? Any hints would be appreciated. I don't consider myself a good enough builder to build a good scale plane but I can build pretty straight and true. Thanks Jim

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RE: WACO YMF - 11/7/2012 2:39 AM   
Dash7ATP



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Status: offline 		A few weeks ago, i brought up the subject of how to make the rib stitching.  Several suggestions were made, from glue drops, to commercially available strips, as well as making them  ourselves. I had an idea, which someone else also mentioned.  This involved making up a jig using small nails on either side of a board spaced two scale inches apart. I made up a jig and after three different attempts, finally have a useable material to use. 

My idea was to use a piece of plastic film as a release base, then the carrier material onto which the stitching string would be attached, and then the string. I felt that dope would attached the string well enough to make this work.  My first base material was a piece of light tissue from a rubber powered kit.  When I doped over this, the tissue wrinkled so badly there was a lot of small sections of the string not touching the base. When cut into 1/8 inch wide strips, a lot of the now short pieces of the string, or "stitches", just came off.

My second attempt involved the use of light silkspan.  The big problem here , as it was also in the first attempt, was that the light plastic film wrinkled up under the silkspan, causing the same problem with wrinkles. On this attempt, I used a thinned out coat of Coverite to adhear the string to the silkspan. This worked somewhat better, but I still had the wrinkle problem with the silkspan. It appeared that the flat surface allowed the string to lift above the paper with the slightest irregularities in the plastic film.

To help keep the string in contact with the base material, I placed a light cardboard over the jig in a slight arch.  By making the card 1/8 inch wider that the spacing of the nails, it created an arch of about 3/8 inch high in the center. This time I used the same Koverall fabric whcih the wing is covered with. I made sure the plastic film was pulled smooth, and stretched the fabric to remove wrinklies and pinned it down to keep it tight. This time, I used a much heavier mixture of Coverite to attach the string to the fabric, and followed it with two coats of Dope. The arch worked to keep the string tight to the fabric.  This time when I cut the material into 1/8 inch strips, the strings did not come loose. 

The photos below show my attempts starting with the silkspan. The two long wrinkles in that attempt and the "stitches" coming off when the film was cut, rendered this attempt no good.  The last three photos show the arch in my jig, the finished sheet of stitching material, and my stab with some stitches applied to the bottom surface.  I used dope to apply them to the stab, as it softened the coverite enough for a pretty good bond. 

Next step is to apply the pinked tape over the stitches.  More to come..........

Now for a question for those familiar with full  scale practices on rib tape. Obviously, the rib stitching is covered with pinked tape. I'm also pretty sure all seams are covered with the Pinked tape. How about the edges of surfaces, such as leading and trailing edges, ends of aileron bays, etc.  All help is appreciated.

Joe





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RE: WACO YMF - 11/7/2012 6:07 AM   
skylarkmk1



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Status: offline 		Joe,

In a nut shell, all points of contact with the internal structure gets a reinforcement of pinked tape - stringers, edges, penetrations and any where there may be rubbing (such as the edges of fairing but not always) but only the ribs on the wing, stab and rudder are stitched in general (sometimes some stringers are stitched as well but that is rare). These pictures may help although they are of a WACO YKS cabin.

P1 – Overall shot of the fuselage
P2 – Leading edge and tip. Leading edge is usually 4” or 6” tape, the tip is covered with tape cut on the bias (45° to the grain of the fabric)
P3 – Inside corner of the Aileron Bay.


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< Message edited by skylarkmk1 -- 11/7/2012 6:55 AM >

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