Can anyone explain the pro's and con's of these two planes. All I ever see and read about it seems is the YAK. I would like to own a stable at low-speed,high-alpha plane. I will be coming from a H-9 Funtana 90.

I see Goldberg has a Sukhoi kit and ARF and CMP has a 77" Sukhoi ARF. The Goldberg is a 50cc but not sure about the CMP.

As you know the choices on the Yak is made by everyone except Taco-Bell.

Please mention your engine choice. Thanks much. Mikel-T

I can't really comment on any of the yaks, but I do have an older Goldberg Sukhoi kit. I got it used as it has been kind of passed around our club, seeing as it's about 8 years old. It had a saito 120 in the nose, but it really lacked power so I put a saito 180 in with an 18x6 prop. It flies really nice, but it's more of an imac or presicion flyer. It can do basic 3D stuff, but if your looking for something that will do rolling harriers down on the deck, you might want to check out something else. It is really stable in harriers and at low speeds. With the 180, it hovers at a little above 1/2 throttle. The pullout isn't insane, but it is enough. Overall it's a great flying plane, lands like a trainer, but I wouldn't reccomend it as an all out 3D machine.

I have the E-Flite Yak, and the YA Sukhoi SU-31. I have to go with my Sukhoi.

There are very few "bad designs" now. Be sure your not buying aplane that was designed 3 or 4 years ago(or more). Wing loading is what makes a plane 3D well or fly like a pig.

For an engine that works well and a company that stands behind their product -DA50.

Mikel T:

The current state of the art designs for 3-D are so far above 5 years ago, its flat amazing. Example, the Chip Hyde Cap 232 has all of the old typical problems designed out. It will not snap out of low speed high alpha like the older junk. Night and day!!!!!!!!!!!! The Yak 54 current design, say by QQ in the 73" and above sizes are flat wonderfull.
Things just do not quit flying even at 0 airspeed. I am simply amazed at their flying ability. Buddy has let me fly his 40% Yak 54 that has a $8,000 investment overall. It simply worth every penny. I enjoy the other end, a $40.00 rcx Yak 54 with hacker 20-22L, and a 40 size mojo, YS 63 powered. No set up time, just stick them in back of the car and go fly. The foamy flys in the back or front yard when ever that feeling comes about, and the kids are in school. The big gasser QQ Yak 54 flys well, just a hastle to get it all all the stuff in the car, and set up at the field. Can buy 3 or more foamys for the price of one of the 8 high torque servos the big one requires. Then there is the aspect of that huge carbon fiber prop spinning in front of you that can and would take off a arm or leg if bad things happen. Imagine getting the wrong plane into the computer transmitter, starting the beast and have it come up WFO. Gang claims it was the funny of funnys watching a old man holding off a big gasser WFO with his feet against the wings and the prop trying to change his sex all while trying to reach the transmitter, just a few inches out of reach. True, believe it or not!!! Will never get the wrong plane up again. Oh, yes the pants were soggy when it was all over. lENJOY

As stated, with current designs, both planes will fly well.
About the only true difference will be pitch and yaw coupling with applied rudder.
With all else being the same, the Yak will have less coupling than the Sukhoi.

I read a thread under this forum where the author listed his top five 50CC planes by model and maker. In the responses that followed ( a heated debate) almost everyone had the QQ Yak but the Sukhoi had hardly a mention. I guess they all can hover, given enough HP, I'm more interested in what Rmenke said, the stable flying manors at low speed and docile enough to invert harrier all day long. I doubt any Cap can do that.

It's all fashion. Right now Yaks are in style, a few years back it was Edges, before that Caps, etc etc etc. They all fly well provided they are well designed and built with a light wing loading. I've had a 50cc QQ Yak, 50cc H9 Cap (the old Alitalia one), a couple Ultimates, and now a 100cc Edge. Of those, the Cap is the best in high alpha stuff. You've never seen a more stable harrier, uppright, inverted, knife edge, rolling, no matter what, that thing in high alpha is magic. I love flying it, I do tail touches with it and have no stress doing so, it's so stable and predictable. Hovers are a little more difficult than others, it likes to fall forward, but nothing too hard. After that is the Edge, almost as stable in high alpha, hovers are easier, and of course it's bigger, and bigger is better. The Ultimates are the next best flying, they do everything well, with a little rock in high alpha, but it's manageable, and a tiny bit of spoiler kills the rock. And finally, the Yak was my least favorite. Awesome precision tracking, beautiful rolls, but it was the most unstable in high alpha, and it had some wierd traits. That thing never got anywhere near the ground, I just didn't trust it.

Wildhare has a new Sukhoi that people are in love with, it's supposed to be extremely stable in all attitudes, and I understand that the discontinued H9 100cc Suk was a great flying plane. Like I said, if it's designed and setup well, any design will fly well. The key is wingloading and control surface size for 3d stuff. Your statement about Caps couldn't be more false, I'd hand the controls of mine over to anyone even if they hadn't done a harrier before, it's so simple, bury the elevator, and modulate the throttle. No rock, no issues, you'd think it was flying on the wing if it wasn't moving at 5mph at a 70deg angle.

If I were moving up from a Funtana, I'd go to something like a Wildhare Edge or Extra with a DA50. If you want a Yak, I'd look at the SD models Yak, or Aeroworks QB. Personally, I wouldn't be buying a CMP or Goldberg, they come out heavy for the amount of wing area, and that's what causes problems.

ncregro, well then I stand corrected. But I'm still getting mixed-up here. The CAP your talking about must be the Chip Hyde Model ?http://www.chiefaircraft.com/rcmsec/...de/CHCAPX.html

with 1050sq.in wing area? which should be@ 15lbs AUW? Gimme sum help here...

Mine is the older version of the Hangar 9 Cap. It has a one piece wing, the newer version has a 2 piece, and a hatch on the top to give easier access to the components. The one I have is still available for $300 for some vendor, you see ads for it here on RCU from time to time. I've got mine flying on a Moki 210, since that's what was on it when a fellow club member was selling it, and it is setup so perfectly that why mess with it and change the engine to a gasser? It's kinda sad for me to admit it, but the best flying plane I've ever flown is my 81" Alitalia Cap that I bought used for $550. It's better than the numerous giant scale gassers I've had, and in many respect better than the $5000+ 100cc Edge I also have. It's much closer in feel to the 150cc Extra I flew that a friend owns than any other 50cc sized airplane.

I just didn't want you to discount Caps. If you like Caps, get one of the Hangar 9s, or the new Great Planes (I prefer the H9 myself, it's more scale looking). Caps are polarizing, some people love the way they look, some people think they are ugly, but everyone has an opinion. That's one of the things I like about them, to me they are beautiful and have a lot more personality than an Edge or Extra, they've got the gorgeous cowl, and the high stab, it's just a great looking and flying plane. The reputation they have for being snappy is something that really isn't there in a modern design, they are just as stable as anything else, and like anything else, the lighter you make it the better it flies. They are about they best plane out there for spins, snaps and tumbling maneuvers, and in my experience, the high alpha stuff is second to none. The only area where it has a disadvantage (in my experience, once again), is that putting it in a hover and keeping it there is a little tougher, it has a smaller sweet spot, and likes to fall forward, but in the end, it is such a predictable airframe that it's easily compensated for.

Here's my favorite picture of mine, it was the last flight of the day with the sun going down, and my friend with the 150cc Carden Extra and I were flying and doing low harriers and hovers in formation. I don't think either of us got our planes more than 100 feet out or 50 feet high that entire flight, it was probably the most fun I've had yet with any plane. I bet you can't look at that picture and not admit that's a gorgeous plane.

Here's the new H9 Cap link: http://www.horizonhobby.com/Products...ProdID=HAN2900

The one like I have is available too, if you do a search on here for Alitalia, you'll find a link. Mine is a little lighter than the new one, just due to the extra structure needed for the 2 piece wing of the new one, but for ease of transport etc, I'd pick the new one, even if it doesn't have anywhere near as pretty a covering scheme as the Alitalia.

NCREGO, Hey I fixed that link, pls, give me a read-out, even though it's not as big, it just looks great! I veered off this once before thinking that the "New Design" was a bit of Hyde-Hype! But after what's been said, I'll give-r-a-go! Certainly can't be a 50cc plane....can it?

Oh, I checked that link. The plane in that pic isn't the Chip Hyde, it's the old Hangar 9. This is what the Chip Hyde looks like:

http://www.chiphyde.com/html/aircraft/capx.html

The specs aren't even close, the Chip Hyde is a 74" span with 1060sq of area, while mine is 80.5 and somewhere north of 1200sq. I know that I've read good things about the Chip Hyde, but I don't think it's really a 50cc plane, the wing loading would be too high with the weight of a 50cc in there. I dunno what engine works well in there, I'd do a search to see what guys are having luck with in the Chip Hyde. May want to call Chief and see what the plane they are selling really is. I'm betting it's the same as the one on Chip Hyde's site, and the pic and weight are just misprints. It'd probably be a good plane with something like a Evolution 26gt, an OS 160, or a big Saito, like a 220.