Extra 300
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Extra 300
I want to know something about 60 size Extra 300. How is this plane, its feel and control ability. Is this stable enough and how is its response when power is cut. I need some experienced suggestions as I am interested in this as my next aircraft.
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I have a goldberg extra 300 with a YS 1.20 engine in it. It is a great flying plane. I have only been flying planes for about 3 years, but some of my more veterened buddies love the way this plane flies. It is very solid and I would buy this plane again if I had the opportunity. I have almost unlimited vertical and I can takoff in about 20 feet of runway. Im actually considering putting floats on this plane and trying to give it a whirl off a lake. I think you would be very happy with an extra 300!
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If you get one, add some plywood in the gear area, and get foam cores for the wing, buy the glass cowl and wheelpants and you will have a great plane that flies great and will last . And get some aluminum landing gear.
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You didnt say how long you have been flying. The Extra shouldnt be your second or third airplane. If you are beyond this point, yes it is a good a flyer for you. The wing sheeting is too thin, and you will get discouraged while building the wing. Save yourself the grief and get foam cores, and sheet them. Use this plane for training for the Sig Extra.
#8
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you might consider a chipmunk, they are very good fliers almost as aerobatic as an extra and dont tip stall as easily like the extra does, world models makes a nice arf of the chipmunk
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I agree with smallfly
I second the opinion on a Super Chipmunk. The chipmunk is a great third airplane. If you like arfs the world models chipmunk comes in two options/ with retracts or without. If your a kit person the Carl Golberg kits are very nice. Both the world models arf and the Goldberg kit can be set up for flaps, so you can bring it in for a slow graceful landing. Many people say the chipmunk flies very much like its full size cousin. Also just like smallfly said it is almost as aerobatic as an Extra 300, and this plane very rarely tip stalls, like the Extra can at times.
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Originally posted by Rickm
The wing sheeting is too thin, and you will get discouraged while building the wing. Save yourself the grief and get foam cores, and sheet them.
The wing sheeting is too thin, and you will get discouraged while building the wing. Save yourself the grief and get foam cores, and sheet them.
I was reading another post about magnetic building boards, do you think it might help with the flimsey ribs?
Mike B
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cant say, about the building board..never used one, I had a friend who had a foam cutter, and we cut new cores,, two inches longer than stock wing. We left the wing tip same size, so wing isnt exactly same as kit wing. but it flies great, and goes where I point it. I havent had any tip stalling problems I have had four different engines in it,, ranging from ..65 to 1.20 . I think it flies better than chipmunk, had several of those. But I am done building for a while. After 20 years,, it time to relax and ARF it for a while.
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Below is my CG extra, 120fs powered but I want more power!!!, Goldberg kits are said to be 60 sized and on the plans they seem to somehow fly on a sixty but these are more a 120 size in comparison with todays arf's. I would recomend this plane 110%..
Flys like a modern pattern design and floats in for landings much like a trainer, easily a third maybe second model. I replaced the u/c with carbon and that fixed the kits only real flaw.
Flys like a modern pattern design and floats in for landings much like a trainer, easily a third maybe second model. I replaced the u/c with carbon and that fixed the kits only real flaw.
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Originally posted by 3DMike
I want more power!!!, Goldberg kits are said to be 60 sized and on the plans they seem to somehow fly on a sixty but these are more a 120 size in comparison with todays arf's.
I replaced the u/c with carbon and that fixed the kits only real flaw.
I want more power!!!, Goldberg kits are said to be 60 sized and on the plans they seem to somehow fly on a sixty but these are more a 120 size in comparison with todays arf's.
I replaced the u/c with carbon and that fixed the kits only real flaw.
I am not sure what you mean be replacing the u/c with carbon. Could you give me more info as to what I should be reinforceing on the plane. I only have the wing almost done at this point.
Mike B.
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Mbusch, i'm thinking about getting a GP Extra 300S .40 kit like the one you mentioned. I was thinking about using a .70 or .72 four stroke... do you think that would be enough power or would the .91 be better?
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I have a the goldberg extra but bought it used and crashed. Repaired it but it weighs a ton I am either putting a mds 148 or something similar in that thing and think it should be just right. As for the landing gear I have seen my plane fly as I bought it off a guy I fly with and he ripped the gear off almost every time although that could be because he is a lousy flyer. I renforced it but still don't know if it will be strong enough if I have all that engine weight in the front. As for the g.p extra the 72 would be a good match as I my friend crashed his Cap 232 and repaired it and it weighed alot and the os 70 gave it unlimited vertical.
#21
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Extra 300
Mil, The plane in my avatar is the GP 300S .40 size. 4-stroke .91. This was my 2nd GP's EXTRA and before that I had an EXTRA230. I would not hesitate for a second to replace this one if it met an unfortunate demise. My first 300 did just that, flutter did it in. If you go for the power you have to take precaution. I didn't anticipate with the first 300. The one pictured is the first one. The second one I'm flying is a clone, but it has the horizontal and vertical stab reinforced with carbon fiber, and a set of Sullivan flying wires.
Point is.....I would not be without an EXTRA now. Matter of fact I'm building the Midwest 27% EXTRA. The GreatPlanes kits are very decent, just follow the book, and if you go overpowered, just come back here and get some feedback..
After buiding 2 GP's EXTRA, the bigger Midwest is an absolute piece of cake. Not kidding, it's cake.
The 70 would do well if you build light, really well. I have a Zen with an OS70 4-stroke, it's heavier then the EXTRA, and the 70 takes the Zen out of site. The 70's and 72's are real power houses. They don't swing as big a prop as the 91's though, that's where you can get advantage. Good luck.
Point is.....I would not be without an EXTRA now. Matter of fact I'm building the Midwest 27% EXTRA. The GreatPlanes kits are very decent, just follow the book, and if you go overpowered, just come back here and get some feedback..
After buiding 2 GP's EXTRA, the bigger Midwest is an absolute piece of cake. Not kidding, it's cake.
The 70 would do well if you build light, really well. I have a Zen with an OS70 4-stroke, it's heavier then the EXTRA, and the 70 takes the Zen out of site. The 70's and 72's are real power houses. They don't swing as big a prop as the 91's though, that's where you can get advantage. Good luck.
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RE: core wings
I just ordered a cg extra 300.I have heard people talking about it being nose heavy on the ground .has any body moved the gear foward on the fuse. if so by how much?
#25
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RE: core wings
The big engines and modifications mentioned above are fine. I just want to say I've built both the GP Extra 300S and Goldberg Extra (both 60 size) and powered both with 91fs. The planes fly very nicely and do ALL the normal aerodynamic maneuvers with this power. The bigger motors are generally intended for 3D which is not a strong point for these planes. If you are an intermediate flyer, consider a "normal" size engine. Of course it all depends on what kind of flying you prefer.
Tom
Tom