GT22 on 26cc airplane?
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GT22 on 26cc airplane?
Considering picking up a 26cc GW / ARF airplane for a OS GT22 I have. The airplane is 68" span and 65" length. I need to know if its likely to be underpowered or just right
Ameyam
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A 20cc will pull a 1/4 scale Piper Cub, over 100" wingspan, I have a 20cc in a 63" 13+ lb. P-47 which works well but I don't know what type of plane you have, if it's 3D then maybe it might not do everything it should capable of but it will fly.
#3
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Many of the newer smaller engines have more power than some larger engines so cc rating alone isn't a good comparison. What is the suggested flying weight of the plane you are looking at? If in the sub 10 pound range, the 22 should power it quite well. If higher, you may prefer an engine in the 26 -35 cc range.
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Its a ARF (Goldwing) Sukhoi 26cc. There are some 20cc airplanes also available, namely the Extra 300lp in both the GW and ARF brands, but I wanted the Su26M as a cheap throw around. The 20cc airframes are actually more expensive than this 26cc because the 26cc has fewer takers
Ameyam
Ameyam
#6
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Ameyam, I was hoping for a link? If you'd rather not for some reason, maybe you could give us the weight and wing area.
I did find a Goldwing Extra, also rated for a 26cc (link below), but it's a little bigger plane. If the wing area and weight listed for that plane are similar to the one you're looking at, the 20cc should do a pretty good job on it, assuming only you keep the weight in check. Lighter is always better of course, but the 20 is pretty happy at something under 9lbs. w/wing area in excess of 900sq in. or so.
http://www.generalhobby.com/goldwing...ane-p-504.html
Though there are a new generation available now, the original 26's were the same size and weight as the current 30-35cc class engines. Thought there being they were about 8oz heavier than the 20's, and you may need to be careful when planning matters related to CG. -Al
I did find a Goldwing Extra, also rated for a 26cc (link below), but it's a little bigger plane. If the wing area and weight listed for that plane are similar to the one you're looking at, the 20cc should do a pretty good job on it, assuming only you keep the weight in check. Lighter is always better of course, but the 20 is pretty happy at something under 9lbs. w/wing area in excess of 900sq in. or so.
http://www.generalhobby.com/goldwing...ane-p-504.html
Though there are a new generation available now, the original 26's were the same size and weight as the current 30-35cc class engines. Thought there being they were about 8oz heavier than the 20's, and you may need to be careful when planning matters related to CG. -Al
#7
Many of the newer smaller engines have more power than some larger engines so cc rating alone isn't a good comparison. What is the suggested flying weight of the plane you are looking at? If in the sub 10 pound range, the 22 should power it quite well. If higher, you may prefer an engine in the 26 -35 cc range.
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http://goldwingrc.com/en/ProductView.asp?ID=239
Thats the 26cc su26m
http://goldwingrc.com/en/ProductView.asp?ID=316
Thats the extra300lp 20cc
Thats the 26cc su26m
http://goldwingrc.com/en/ProductView.asp?ID=316
Thats the extra300lp 20cc
#9
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Re: A Cub is certainly going to fly better than a 3D plane on that power, even weighing the same....
Um, thinking a 3D pilot might disagree. If you have 2 planes with the same wing area and same weight, both with 20cc power, the purpose designed 3D plane is going to absolutely tear up a Cub in any manner you'd care to discuss. It will be faster, slower, and incredibly more maneuverable. The only place a Cub will shine in that contest is when it comes to looking like, and flying like, a Cub.
Um, thinking a 3D pilot might disagree. If you have 2 planes with the same wing area and same weight, both with 20cc power, the purpose designed 3D plane is going to absolutely tear up a Cub in any manner you'd care to discuss. It will be faster, slower, and incredibly more maneuverable. The only place a Cub will shine in that contest is when it comes to looking like, and flying like, a Cub.
#10
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Ameyam, my bet is the 26cc plane in your link is an older (heavier) design. It would make a great sport plane, but at 9.5lbs, it's going to struggle in some 3D maneuvers. 2 examples I can think of would be in hover pull out (obviously) and more susceptible to wing rock in high alpha. My opinion anyway.
From what I've seen out of Goldwing and Skyline (not sure what or if there's a difference), their newer stuff has been redesigned with a pretty obvious difference in weight when compared to stuff they were selling just 12-18 months ago. Not likely a big deal for a knock around plane, but pretty nice for 3D where every oz. counts..
From what I've seen out of Goldwing and Skyline (not sure what or if there's a difference), their newer stuff has been redesigned with a pretty obvious difference in weight when compared to stuff they were selling just 12-18 months ago. Not likely a big deal for a knock around plane, but pretty nice for 3D where every oz. counts..
#11
Re: A Cub is certainly going to fly better than a 3D plane on that power, even weighing the same....
Um, thinking a 3D pilot might disagree. If you have 2 planes with the same wing area and same weight, both with 20cc power, the purpose designed 3D plane is going to absolutely tear up a Cub in any manner you'd care to discuss. It will be faster, slower, and incredibly more maneuverable. The only place a Cub will shine in that contest is when it comes to looking like, and flying like, a Cub.
Um, thinking a 3D pilot might disagree. If you have 2 planes with the same wing area and same weight, both with 20cc power, the purpose designed 3D plane is going to absolutely tear up a Cub in any manner you'd care to discuss. It will be faster, slower, and incredibly more maneuverable. The only place a Cub will shine in that contest is when it comes to looking like, and flying like, a Cub.
#12
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Spaceworm, you need to look into the wing loading 3D planes run, even those that aren't that great. Think of something close to glider country.
Even in cases where the 20cc engine would be overwhelmed trying to do the 3D thing - like a contest between a pair of 12lb 20cc powered planes, Cub vs. 3D design of about the same wing area, the 3D design will be so much more efficient it still wouldn't be a contest. Though no longer capable of an extended hover, the massive control surfaces would still be extremely effective. Bottom line, they're designed from the ground up to be fun at speeds a Cub can't fly at, and the degree of control/maneuverability they have is limited more by the pilot than anything else....
Oh, and though I've been at it a while now - I still SUCK at 3D!
Even in cases where the 20cc engine would be overwhelmed trying to do the 3D thing - like a contest between a pair of 12lb 20cc powered planes, Cub vs. 3D design of about the same wing area, the 3D design will be so much more efficient it still wouldn't be a contest. Though no longer capable of an extended hover, the massive control surfaces would still be extremely effective. Bottom line, they're designed from the ground up to be fun at speeds a Cub can't fly at, and the degree of control/maneuverability they have is limited more by the pilot than anything else....
Oh, and though I've been at it a while now - I still SUCK at 3D!
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Ok, i want a 3d capability. Thing is, the difference is spans is just an inch or two. The Su26m is not necessarily old, may be 3~4 months. And if the 22is not sufficient, i do have a Turnigy 26cc engine that i dont seem to be using at all
Ameyam
Ameyam
#14
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Ameyam, It's not so much about wingspan as it is about wing loading and power to weight ratios. If you want 3D, you need to do the math. Check the difference between the plane you're talking about, and the same plane (or similar) with the same wing area and 3/4lb lighter.
Compare what you get to something like that 30cc Funtana you had to get an idea of what to expect from your new choice.
Going with a Turnigy 26 is a step backwards. It's not going to have much more power than the 20cc engine (if anything at all), and it's much heavier.... check it out.
Compare what you get to something like that 30cc Funtana you had to get an idea of what to expect from your new choice.
Going with a Turnigy 26 is a step backwards. It's not going to have much more power than the 20cc engine (if anything at all), and it's much heavier.... check it out.
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Hi,
actually, the Turnigy is light. Its 735g with ignition. Almost as light as the DLE 20 / 120 AX. Lighter than then GT22 which is almost dle30 heavy. I have flown it before, it was tossing around a 4.5kg plane as if it was nothing a couple of seasons back. Then I hit a bird, then hit a fence in the deadstick and didn't end up testing the engine subsequently.
Anyway, due to a few dumb law enforcement officers who don't know what aeromodelling is, we cant fly till the monsoon now. That defeats the purchase, so I may not get a smaller airplane now. May be I will save up for the 50cc I have been meaning to buy.
On the topic of the 50cc, whats the opinion on 50cc Aeroworks Extra vs Pilot Extra vs Extreme Flight MXS 50CC 83". Through some coincidence, they all cost about the same and I intend to get one by October. This question is from a planning perspective
Ameyam
actually, the Turnigy is light. Its 735g with ignition. Almost as light as the DLE 20 / 120 AX. Lighter than then GT22 which is almost dle30 heavy. I have flown it before, it was tossing around a 4.5kg plane as if it was nothing a couple of seasons back. Then I hit a bird, then hit a fence in the deadstick and didn't end up testing the engine subsequently.
Anyway, due to a few dumb law enforcement officers who don't know what aeromodelling is, we cant fly till the monsoon now. That defeats the purchase, so I may not get a smaller airplane now. May be I will save up for the 50cc I have been meaning to buy.
On the topic of the 50cc, whats the opinion on 50cc Aeroworks Extra vs Pilot Extra vs Extreme Flight MXS 50CC 83". Through some coincidence, they all cost about the same and I intend to get one by October. This question is from a planning perspective
Ameyam
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Ok. My buddy had a 50cc Pilot & it was fairly good except he received it without the firewall installed i think. I have fellow fliers own their EF but thats mostly 30cc. I am flying a 30cc AW Extra myself & was blown away with how little setup it required & how well it flew from the box. However, mine is a 30cc extra with a 35cc engine & most of us are having a little trouble seeing it at distance unspite of the orange & white scheme . I know the AW 35cc airplanes are more suited to this engine but they are also heavier & the 30cc extra already has a bit or wing rock. Hence the uncertainty
Ameyam
Ameyam