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  #181  
Old 06-27-2006, 05:38 PM
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But, it says underneath the wing:

"Don't Eat Me"

So not hot pizza for anyone!
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  #182  
Old 07-09-2006, 08:34 PM
Johndou Johndou is offline
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Thanks Nizz for all of your great work!

I especailly liked the Citabria. I came here a few weeks back looking for some other planes and looked all over for a Citabria ... now I have one THANKS!! I soloed in an Aeronca Champ when I was younger, so the Citabria is special to me. I did tweek your Citabria just a bit by changing the prop to a 27 X 10 and tweeking with the incidence of the horizontal tail.

I've only started back into R/C (after being away for almost 20 years) and the G3 is a big help.

Maybe you, or someone else, can answer a question for me. Using the Citabria as an example. The edit screen says that it has a 65.4 in wing length. Is that per wing panel, because it sure looks like it's bigger then a 65 in wing span? Some of those numbers in the edit screen don't make a lot of sense to me. I've been thinking of getting one of the Citrabia kits that are available. I think that Lanier, Sig and Midwest have kits available. But, it sure would be nice to see how one flys before running out and spending that money. Which "model" is your Citrabia fashioned after?

Thanks;
John
  #183  
Old 07-09-2006, 10:01 PM
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In the physics editor, if you click on the model name at the very top of the left panel, you will see the overall dimensions of the plane.
  #184  
Old 07-10-2006, 01:16 PM
Johndou Johndou is offline
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Thanks opjose ... So does that mean that I can reduce the 100% of a 120" span plane to 66% and have an 80" span (approx) plane? Could I then put a .91 engine in it and have something that performs appropriately, like a smaller plane? Or, is that too simplistic and reducing (or increasing) model size requires much more then simply reducing or increasing the overal deminsions to achieve realistic flight performance?

Is there someplace I could (or should) go to get similar questions answered ... some sort of "how to manual"?

Thanks in advance;
John
  #185  
Old 07-10-2006, 07:03 PM
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There are a few things you need to do to resize a plane.

G3 does most of the work for you.

Decrease or increase the visual model and the physics model scaling percentage in the editor appropriately.

One affects what you see and the latter, how it flies. G3 will normally scale the weight on the fuselage, wings, etc... but see below...

Decrease or increase the engine used. G3 bases the weight of the plane on both the scaled fuselage/airframe AND it adds the engine weight to it W/O scaling the engine. So you MUST choose a new engine.

G3 also does NOT choose a new prop for you. You'll have to also adjust the prop size and pitch accordingly.

When working with electrics, also note the gear ratio changes, etc. may need to be modified.

If you are taking say a Balsa plane and trying to convert it to a smaller foam airplane, you'll also need to adjust the "mass scaling" percentage. When going to a LIGHT foamy, a ratio of .60 (60%) is appropriate.... if you are dealing with say a lightened version of a plane (e.g. the Skybolt Kit versus the ARF) use something less e.g .80. This adjusts how G3 deals with the mass/inertia calculations.

On small planes I also make the gear not so stiff, to account for increased deadening of bouncing tendancies produced by the lighter springier gear.

If you are going from Glow to Electric or vice versa. you'll need to pay attention to the battery/fuel tank locations.

When going from one to the other, G3 doesn't know what to do, and will frequently place the battery or tank in unusual places.

When I turned the Groove into a glow powered plane, G3 put the fuel tank at the very tip of the tail....

Finally adjust the C.G.

For this your best bet is to take some educated guesses on the weights of the various components. DO NOT rely upon the editor's ability to move the C.G. for you.

Rather use the latter to fine to the C.G. locations.

Instead adjust the weights of each component, trying to approximate real world weights for each model.

If you have more than one plane, or have built a few, even ARF's, this is very easy to do as you already have a good idea on how much everything weights.

Check out the Nextstar. Select "electric powered" in the editor and then choose the electric motor.

The 3D model includes a visual 3D electric engine, so you can easily turn the Nexstar into a small EP trainer plane.

Last edited by opjose; 07-10-2006 at 10:16 PM.
  #186  
Old 07-10-2006, 10:09 PM
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wow, thanks, i didnt realize some of the stuff you just explained, good post!
  #187  
Old 07-11-2006, 01:08 PM
Johndou Johndou is offline
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Thanks, great information! Now, I'm off to "scale" a Decathlon! And maybe even turn it into an Aeronca Champ!

John
  #188  
Old 08-13-2006, 08:00 AM
Nizz Nizz is offline
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New Dings Bums

Hi all

i Dont have more time to build.

Greets Nizz
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!! battery load or refill !! it's your decision !!

Last edited by Nizz; 02-14-2013 at 03:36 PM.
  #189  
Old 08-13-2006, 10:07 AM
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Nice thanks Nizz! I love the "JET LIKE"
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  #190  
Old 08-15-2006, 07:36 AM
Nizz Nizz is offline
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and an other
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!! battery load or refill !! it's your decision !!

Last edited by Nizz; 02-14-2013 at 03:36 PM.
  #191  
Old 08-15-2006, 12:33 PM
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thats sweeet.
  #192  
Old 08-15-2006, 03:41 PM
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Great Job Nizz! I love this plane
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  #193  
Old 08-16-2006, 03:23 PM
Nizz Nizz is offline
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I need fun !!!

Yea i got it
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!! battery load or refill !! it's your decision !!

Last edited by Nizz; 02-14-2013 at 03:36 PM.
  #194  
Old 08-16-2006, 03:50 PM
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Thumbs up

Damn! You are on a role Nizz! I love it! Great Work
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  #195  
Old 08-16-2006, 04:02 PM
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Look great
 

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