I really just do fun fly, but I want a plane (Cap232) to start flying precission patterns with and enter competitions. Right now I log time on a 60SuDoKhoi with a YS91AC using modified Zinger16x6 props. For my to be Cap232 I have a YS91AC and a YS120AC available. I had a Kangke 60 size Cap232 w. YS91AC at one time, and I did like that plane, but sold it. I would really like something a bit larger, but I wonder if my YS120AC would give sufficient performance in the Kangke 120 size Cap232. I have looked at YellowAircraft 120 Cap232 and World Models 120 Cap 232, but Kangke's 120 Cap232 really looks good, and it's the cheapest of them all. I have a Zinger18x6 prop that I will modify for the YS120AC. This is my first YS120, and I really don't know how much stronger than the YS91 it is. Anybody feel free to comment.
DKjens

I haven't built the WM or Yellow, yet. I do have the Kangke and if you haven't already you can check it out here.

I think the H9 is the cheapest... I want to build one of those, too. And, see how it compares to the Kangke... the Kangke flies really well.

As for motor... I thought the OS 1.60 was just adequate for the 11-lbs Kangke. I, personally, wouldn't consider YS-120 on one of these CAPs... unless it was just for cruiz'n.

I had a YS F-120 on my H9 cap and it flew it ok but it didn't have the unlimited verticle. This was just to much plane for the engine. I also have a world models extra 300 120 with a on os 120 4-stroke that is powered very well and is only slightly smaller than the cap. I know that the YS has more power than the OS so the YS should fly that plane very well. The reason I bring this up is because World models makes a cap of the same size as the extra and I think that would be a great airplane for the YS 120 you have. Just my thoughts. My YS just has a strait pipe and boy does it sure sound good!

I had a WM Extra 1.20, too. I liked the small size because it works perfectly with these 1/4 scale motors. I set it up with the Saito 1.80 and it had excellent power to weight. I think DPM had it all wrong trying to go slightly larger than normal with a 1/4 scale. These 2-lbs engines are awesome... and on a smallish 1/4 scale plane they are really great for 3D. :-)

I'd buy a smallish 1.20 size plane that was fully 3D setup in heart beat. Something around 68" like the WM 1.20 Extra. Built light, fully airfoiled, all double beveled, 950 squares, 9.5-10 lbs true all up weight with a Saito 1.80... they'd sell like hotcakes. Horizon? Are you listening? :-)

Both the Hangar 9 and Sig caps are excellent aircraft. I prefer the Hangar 9 but opinions are like ...
The power loading with your 120 is going to be marginal. I fly a Moki 2.10 on mine, my buddy uses a 1.8 and I've seen them fly very well on the OS 1.6. I flew it for 1 season with a SuperTigre 2300 (1.4) and it flew well but only hovered on the very best days.
The Sig Cap is smaller than the Hangar 9 (950 square inches area and 73" span vs. 1100 sq. in. and 74" span) and runs about .75 lbs. lighter. You could pick up one of these and put it on a diet...
The Hangar 9 Edge is also a great flying plane and some have come in at 9.5 lbs. I flew one with a Saito 1.5 and thought that it was perfect.
However, Caps and Edges are about the worst scale design for precision flying. That is between the Giles, Edge, Laser, Staudacher, Extra, Zlin, Katana and Cap. If you want to fly precision get an Extra.

I've had the SIG and the Kangke. And, you've had the SIG and the H9. I'd like to compare the WM and the YW, too. A 1.20 size CAP shoot out! That would be great article for one of the mags... but you know they'll never do it. They'll just say they're all excellent except for a typo in the manual or inferior tires or something. :/

All but one of the top seven finishers at the last TOC were flying Extras. They're boring... but they do seem to be the best design.

Joe,

That'd be a great article! Just not for MAN. Of course because everything at there "fly's great with just 2 clicks of trim..."
The World Models Cap looks great but it has a thinner airfoild than the H9 and the wing planform is slightly different. It doesn't 3D as well.
The YW? Yellow? It's a tank. I also think that it's the ugliest line of non-scale, scale aircraft availible.
I agree with your learned assesment of the Extra line of aircraft... Like watching pattern
I own a H9 Cap (big & small), and have access to a WM and a Midwest. We could put together an interesting read. That is when the wind stops blowing and snow stops falling here n Detroit.
Chris

I don't think a YS 120 will be enough for any of the current 120 size planes. It's been my experiance that at best they produce about 11-12 lbs. of static thrust. The general rule of thumb is that the thrust should be at least 1 1/2 times the weight for unlimited 3-D, anything less does not leave enough power in reserve. I had an Saito 120 on a Kangke Extra-60 and an OS120 on their Cap232-60 Both were a very good match. If your going to a 10-12 pound plane I think the Saito 150 - 180 would be required. I also agree with Chris300s the Extra is a much smoother flying plane and will fly percision the best, but nothing tumbles like a Cap.

Wow, that is more response than I had ever hoped for. Everybody is confirming what I had suspected. My delema is, that I have to really mak eup my mind as to what I want this plane to do. If I want to do 3D and fun fly, I'll fly my SuDoKhoi or Jerrys Spoiler, which I'm building next. If I do get a 120 size plane for my YS120, that won't 3D or hang on the prop, will I get bored with it. I am thinking that I should get this plane to practice precission flying, because I never get to do that with my funfly models, and I want to get better and compete.
So, please tell me, which 60 size ARF (Cap, Extra, Staudacher, etc.) should I look at, and should I use a YS91AC or YS120AC. I do love doing elevators and harriers, and the larger planes are better at that I hear.
DKjens

go to rc showcase, (were you buy zdz,s) and go to there links. then go to the genisis web site.they have a 25%cap that about 10lbs but you have to build it . fiberglass fuse.looks realy nice. but im looking for a 30% with a fiberglass fuse. so if anyone knows were i can find one. let me know

Well, here's what I'm going to do. I'll make a test stand for my YS120 to run it and measure thrust. I have a Zinger18x6 that I'm going to modify, like I modified my Zinger16x6 for my YS91. When the YS120 pulls it at 9-9.5k I'll see how much thrust I have. If I get 15 lbs or more, I will look for the lightest Cap232 120 size available. That looks like the World Models, but I'll call around and see how much fuse, wing and hardware weighs on the different models, and add the 2 lbs engine and the weight of radio gear etc. If I can get it all at 10 lbs I'll go for the 120 size.
DKjens

The fact is that NO 1/4 scale Cap is hovering or torque rolling on a YS except on the best of days... If all you want to do is fly sequences the YS will work fine on any of the previously mentioned planes. If you want to do any hovering a smaller plane or bigger motor are in the cards. Obviously you need a 1 to 1 thrust to weight ration to hover. However, once that thrust collumn is vectored (manuvering or hovering in a wind) you suddenly need up to 1.5 to 1 just to hover. 1.5 to 1 is the watermark. Most 3D guys are flying with 2 to 1 or even 3.5 to 1. Dave VonLinsowe's FC Giles is 28 lbs and his motor is putting out 99 lbs of thrust static.
If you cut up the Cap. Replace the firewall and landing gear with carbon fiber, use very short metal and nylon bolts, run 5 servos, a 16 oz tank, a 500 mah battery and pump the YS up on 45% heli fuel..... It'll torque roll on a calm day.

You can stick around... I like your way of thinking. :-)

An easy way to do this would be to purchase the kange extra.my friend flys this plane and i fly the 300 staudecker with a 120(2 cycle)His has a 91 and could use a 120.The extra is smoother in the air and would be nice in compitition in the lower classes and is a fun plane to fly.The ys in the 120 caps could get boreing.

I've been interested in that plane... but it looks so boring in the pics on their site. How does it look in real life?

Will take pictures tomorrow and post.Can really dress them up with some stars and stipes.Very boring looking stock but is fun to fly.

Boy!!!!!!!!!!!!!!!1
This is not the thread to read if you are a YS enthusiat??????
Paul

No problems, YS guys only follow the threads that say "Hydeout" or "reducing throws to smooth ou the sequences". I get the feeling that what the pilot is after is some serious stick banging, and a huge "Wow" from the crowd. That's not pattern.
Chris

Your correct Chris300s it's not pattern, But tumbles ,waterfalls, blenders and harriers sure keep ya from getting bored.