WACO YMF
RE: WACO YMF
ORIGINAL: Jaybird
Soory, sorry, sorry! It was meant as a joke as it is another subject that gets everyone worked up.
I worked on adding the javelins to the new flying wires on my GP WACO last evening and should have it finished tonight.
Jaybird
Soory, sorry, sorry! It was meant as a joke as it is another subject that gets everyone worked up.
I worked on adding the javelins to the new flying wires on my GP WACO last evening and should have it finished tonight.
Jaybird
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RE: WACO YMF
ORIGINAL: RCplanman
jaybird,What is the incidence of your bottom wing.?
Bill
jaybird,What is the incidence of your bottom wing.?
Bill
Jaybird
RE: WACO YMF
Does it fly level with no up elevator trim and your at a fast idle? The reason I ask is this, if it does not dive on a low power setting and does power on then you might want to change your thrust line to include some positive thrust.
Bob
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RE: WACO YMF
On the symetrical airfoil, I understand needing it for inverted flight to keep the AOA down. It also would have helped the new RC pilot that put his trainer wing on upside down. But what's the penalty in lift as compared to a 'standard' wing? Seems like it could be significant requiring more power?
Mike Hopkins
Waco Brotherhood #132
Mike Hopkins
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RE: WACO YMF
If I take the trim out in flight the nose will pitch down and it will descend regardless of power setting.
All three planes behave the same way. I believe they are properly balanced and built per plans as well.
Jaybird
All three planes behave the same way. I believe they are properly balanced and built per plans as well.
Jaybird
RE: WACO YMF
On my ARF GP WACO I don't know what the design incidence is supposed to be relative to some datum line, but if I block it up so that my Robart incidence meter reads "0" on the lower wing. At this point what exactly is the FCL incidence and the engine TL incidence while we are at it? Keep in mind that I only ask because it is sounding like the horizontal has too much positive AOI. and your counter trimming.
Bob
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RE: WACO YMF
In the blocked up position the engine thrust line is also 0 when the bottom wing is 0 incidence.
Not sure what "FCL" refers to, sorry.
Jaybird
Not sure what "FCL" refers to, sorry.
Jaybird
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RE: WACO YMF
Stickbuilder,
I recently bought a Byron FPN7 Waco. The price range you quoted was in line with what the previous owner was asking,
and the incidence +2 Top Wing, 0 Bottom Wing , and +2 Stab was also in the same general area. i hope these planes catch the eye
of modelers since they are in my opinion great looking and supposedly very good flyers.
Dan
I recently bought a Byron FPN7 Waco. The price range you quoted was in line with what the previous owner was asking,
and the incidence +2 Top Wing, 0 Bottom Wing , and +2 Stab was also in the same general area. i hope these planes catch the eye
of modelers since they are in my opinion great looking and supposedly very good flyers.
Dan
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RE: WACO YMF
For anyone with the PICA or GP WACO, I'd like to add "dummy" aileron pushrods (all four are servo driven on the GP WACO) but I'm not sure how to do it. I plan to make the pushrods telescoping so that they don't work againt the servos, but I can't come up with a good way to attach them to the ailerons. Just wondering if the PICA kit spelled out a way or if anyone else has tried this on the GP WACO ARF. I've looked at the other kit assemblies but I'm not sure how to transfer that to the already built and covered ailerons. Maybe this would be a good chance to recover them with a corrugated surface?
Jaybird
Jaybird
RE: WACO YMF
ORIGINAL: Jaybird
In the blocked up position the engine thrust line is also 0 when the bottom wing is 0 incidence.
Not sure what ''FCL'' refers to, sorry.
Jaybird
In the blocked up position the engine thrust line is also 0 when the bottom wing is 0 incidence.
Not sure what ''FCL'' refers to, sorry.
Jaybird
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RE: WACO YMF
That's just it. The ARF doesn't provide any of that centerline or datum line information for anyone to verify where anything is. The instructions don't even mention checking any of the incidences as they are already designed in and set with the completed assemblies. If there was a set of plans then you could see what internal structure is the centerline. The only thing I can do is block it up and choose a surface (in this case the lower wing) as a starting point.
Jaybird
Jaybird
RE: WACO YMF
ORIGINAL: Jaybird
That's just it. The ARF doesn't provide any of that centerline or datum line information for anyone to verify where anything is. The instructions don't even mention checking any of the incidences as they are already designed in and set with the completed assemblies. If there was a set of plans then you could see what internal structure is the centerline. The only thing I can do is block it up and choose a surface (in this case the lower wing) as a starting point.
Jaybird
That's just it. The ARF doesn't provide any of that centerline or datum line information for anyone to verify where anything is. The instructions don't even mention checking any of the incidences as they are already designed in and set with the completed assemblies. If there was a set of plans then you could see what internal structure is the centerline. The only thing I can do is block it up and choose a surface (in this case the lower wing) as a starting point.
Jaybird
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RE: WACO YMF
Sounds good. I'll check that out once I'm done with the detail work I'm doing at the moment. Since the plane flies fine I'm not in a big hurry to get all my measuring equipment out again. I was just curious as to why so much positive incidence is designed into the horizontal stab.
Jaybird
Jaybird
RE: WACO YMF
With everything you have said so far, it really does sound like an AOI thing, but then again it could be one of the tradeoff things at the designer level, anyway, from the pictures it sure is pretty.
Bob
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RE: WACO YMF
ORIGINAL: Jaybird
For anyone with the PICA or GP WACO, I'd like to add ''dummy'' aileron pushrods (all four are servo driven on the GP WACO) but I'm not sure how to do it. I plan to make the pushrods telescoping so that they don't work againt the servos, but I can't come up with a good way to attach them to the ailerons. Just wondering if the PICA kit spelled out a way or if anyone else has tried this on the GP WACO ARF. I've looked at the other kit assemblies but I'm not sure how to transfer that to the already built and covered ailerons. Maybe this would be a good chance to recover them with a corrugated surface?
Jaybird
For anyone with the PICA or GP WACO, I'd like to add ''dummy'' aileron pushrods (all four are servo driven on the GP WACO) but I'm not sure how to do it. I plan to make the pushrods telescoping so that they don't work againt the servos, but I can't come up with a good way to attach them to the ailerons. Just wondering if the PICA kit spelled out a way or if anyone else has tried this on the GP WACO ARF. I've looked at the other kit assemblies but I'm not sure how to transfer that to the already built and covered ailerons. Maybe this would be a good chance to recover them with a corrugated surface?
Jaybird
On my 40%,I made mine from telescoping carbon tubes. The brackets are made from part of a "butterfly nut" that is used to fasten stuff to your walls in the house. Seeing as they are not under any particular load, I drilled the mounting holes in the aileron and soaked the holes with thin CA. Quite a few flights now and no signs of any loosening up.
Cheers,
Dave.
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RE: WACO YMF
Wow! Great looking surface and fasteners on the aileron. The ailerons on the smaller GP WACO are mostly open structure with film covering so there isn't any wood to drill through in that area. I suppose I could slice through the covering on the bottom and insert some material to mount to and then close it back in again.
Thanks for the information.
Jaybird
Thanks for the information.
Jaybird
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RE: WACO YMF
On my Pepino 1/4 scale Waco, I went with two servos for ailerons. Why does the GP need four?? Pretty easy to link the second aileron. Or am I missing something??
Mike Hopkins
Mike Hopkins
RE: WACO YMF
ORIGINAL: Jaybird
For anyone with the PICA or GP WACO, I'd like to add ''dummy'' aileron pushrods (all four are servo driven on the GP WACO) but I'm not sure how to do it. I plan to make the pushrods telescoping so that they don't work againt the servos, but I can't come up with a good way to attach them to the ailerons. Just wondering if the PICA kit spelled out a way or if anyone else has tried this on the GP WACO ARF. I've looked at the other kit assemblies but I'm not sure how to transfer that to the already built and covered ailerons. Maybe this would be a good chance to recover them with a corrugated surface?
Jaybird
For anyone with the PICA or GP WACO, I'd like to add ''dummy'' aileron pushrods (all four are servo driven on the GP WACO) but I'm not sure how to do it. I plan to make the pushrods telescoping so that they don't work againt the servos, but I can't come up with a good way to attach them to the ailerons. Just wondering if the PICA kit spelled out a way or if anyone else has tried this on the GP WACO ARF. I've looked at the other kit assemblies but I'm not sure how to transfer that to the already built and covered ailerons. Maybe this would be a good chance to recover them with a corrugated surface?
Jaybird
Here are the pics:
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RE: WACO YMF
Very straightforward, I like it. Did you add anything to the inside of the aileron or just bolt through it? Thanks for sharing.
As to using four servos I guess it was a design decision by Great Planes to use them instead of connecting rods from the lower to the upper. I find it fairly easy to assemble at the field where I plug in the two bottom serovos as I install the lower wing and the upper wing panels plug in at the center section. My Great Planes Super Skybolt has two servos in the lower wing only and connecting rods to drive the upper ailerons. The Midwest Super Stearman does as well. Again, a design choice by someone along the way. The 1/4 scale Cermark Pitts S2B has four separate servos like the WACO, but that's a pretty large biplane and also doesn't come with aileron connectiong rods.
Thanks for the great ideas.
Jaybird
As to using four servos I guess it was a design decision by Great Planes to use them instead of connecting rods from the lower to the upper. I find it fairly easy to assemble at the field where I plug in the two bottom serovos as I install the lower wing and the upper wing panels plug in at the center section. My Great Planes Super Skybolt has two servos in the lower wing only and connecting rods to drive the upper ailerons. The Midwest Super Stearman does as well. Again, a design choice by someone along the way. The 1/4 scale Cermark Pitts S2B has four separate servos like the WACO, but that's a pretty large biplane and also doesn't come with aileron connectiong rods.
Thanks for the great ideas.
Jaybird
RE: WACO YMF
I just bolted straight through the aileron, but one I have everything done the way I want it I am going to cut just enough of the monocote so I can mount it directly to the wood and shorten the screw length a little, and then once done wrap a small piece of monocote around everything to hide it.
I figure I am about 70% complete on the assembly process just ain't in a big hurry to finish it since here in up state New York we have snow on the ground and its just a we bit to cold to fly.
I figure I am about 70% complete on the assembly process just ain't in a big hurry to finish it since here in up state New York we have snow on the ground and its just a we bit to cold to fly.
RE: WACO YMF
ORIGINAL: hopkimf
On my Pepino 1/4 scale Waco, I went with two servos for ailerons. Why does the GP need four?? Pretty easy to link the second aileron. Or am I missing something??
Mike Hopkins
On my Pepino 1/4 scale Waco, I went with two servos for ailerons. Why does the GP need four?? Pretty easy to link the second aileron. Or am I missing something??
Mike Hopkins
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RE: WACO YMF
rcboatomatic, Dave what I've done is sandwitch the rod between2 pc.''s of maybe 3/32 balsa & then sand that to a airfoil shape. Out at that thin edge you could also put a small piece of 64th ply top & bottom and then cover that w/ your covering would make it pretty strong. A thought.
Bill
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Bill
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RE: WACO YMF
Finished up mounting the javelins to the flying wires and made up some telescoping aileron connecting rods today...great fun! I used some piano wire, brass tubing, aluminum airstream tubing, brass threaded solder ends and metal clevises to make the pushrods. The horns are cut down nylon horns that were heated up and bent to the correct angles for both sides. The top clevis is on a section of rod riding inside a brass tubing sleeve with a short section soldered to the end to act as a stop. Once mounted in the aluminum it can slide freely about an inch but is trapped and won't fall out. I have left them the bare aluminum at this point as it's quite cold in the house and even colder outside so spray painting will have to wait until spring. It took a bit of fiddling to get the first one to slide smoothly but the second one was a piece of cake.
While I had it all together I took the opportunity to weigh it...it comes in around 13 lbs best I can tell with bathroom scales.
Now I can take the wings back off and start on the center section fuel tank detail and then the dummy engine. The flying wires are anchored to the fuselage and clip to brackets on the wings for quick assembly.
Good day to be inside!
Jaybird
While I had it all together I took the opportunity to weigh it...it comes in around 13 lbs best I can tell with bathroom scales.
Now I can take the wings back off and start on the center section fuel tank detail and then the dummy engine. The flying wires are anchored to the fuselage and clip to brackets on the wings for quick assembly.
Good day to be inside!
Jaybird
Thread Starter
RE: WACO YMF
ORIGINAL: CAPT. DAN
Stickbuilder,
I recently bought a Byron FPN7 Waco. The price range you quoted was in line with what the previous owner was asking,
and the incidence +2 Top Wing, 0 Bottom Wing , and +2 Stab was also in the same general area. i hope these planes catch the eye
of modelers since they are in my opinion great looking and supposedly very good flyers.
Dan
Stickbuilder,
I recently bought a Byron FPN7 Waco. The price range you quoted was in line with what the previous owner was asking,
and the incidence +2 Top Wing, 0 Bottom Wing , and +2 Stab was also in the same general area. i hope these planes catch the eye
of modelers since they are in my opinion great looking and supposedly very good flyers.
Dan
Bill, Waco Brother #1