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Lightweight Kit for an OS 40LA?

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Old 07-27-2005 | 12:28 AM
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Default Lightweight Kit for an OS 40LA?

I'm on the hunt for another kit. I've got a shoebox full of 40 size engines, and there's a 40LA in here thats almost new.

I want something in a 30 size kit for the 40LA. I thought about a Stinger 40, but I've already got a Stinger 10 with a 25LA on the nose. I don't think the Stinger 40 would perform well with a 40LA anyway.

What do you guys think for a 30-40 size kit thats fairly lightweight. It can be just about anything. I'll fly a hopped up trainer, a sport plane, a scale plane, or a 3D plane.

I was looking at the Sig Cobra kit, the GP T-Craft, the Gee Bee Tiger Moth, or the Lanier Extra 3.25.

Any other ideas?
Old 07-27-2005 | 06:48 AM
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Default RE: Lightweight Kit for an OS 40LA?

So many choices, it staggers the mind. I've had plenty of .40 siz planes that have flown well with a .40 engine (usually OS .40 FP). I think a lot depends on what youi want to do - slow flying, get a .40 Size Cub, faster get a profile kit, just having fun a 4-Star Forty. I really don't know what to tell you on what kit to get. You can always try a SPAD plane.
Old 07-27-2005 | 11:19 AM
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Default RE: Lightweight Kit for an OS 40LA?

I flew a Great Planes Easy Sport 40 with a 40LA and was very happy with it.
If you want lots of fun try a Sig Fazer.
Old 07-27-2005 | 11:48 AM
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Default RE: Lightweight Kit for an OS 40LA?

Tower Hobbies Fun 51
Old 07-27-2005 | 12:17 PM
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Default RE: Lightweight Kit for an OS 40LA?

Bear in mind the OS .40LA is on the low end of the power range for .40-.46 size engines, but it is also the lightest. A really light 3D plane would work, as would any .25 size plane. The 40LA isn't that much heavier than a .25/.28/.32 size engine so a .25 size plane would give you a speedy combination.

For a 3D plane, you need to check the size and weight. If you see them flying it with a Saito .72 4-stroke, it'll be too heavy. As I recall, the Magic can be flown with a .32 although most of us in the US use a .46. The Thunder Tiger Lazy Tiger P-51 would be one I think would be good for a .40LA.

If you don't mind Coroplast, get a 24" square and make yourself a Pizza Box Flier. It's more fun per square inch than anything else you'll find and a .40 LA will be perfect.
Old 07-27-2005 | 01:44 PM
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Default RE: Lightweight Kit for an OS 40LA?

All good ideas. I can't get really excited about SPAD and coroplast planes. I've flown a SPAD in the past, and it was neat, but not my usuall "flavor"

The Fun 51 and the Lazy Tiger are good ideas. I've done the Fazer already.

I like the Great Planes T-Craft. Kinda reminds me of a Decathlon or a Clipped Cub.

I could always get another engine and build the GP P-38 profile
Old 07-27-2005 | 01:54 PM
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Default RE: Lightweight Kit for an OS 40LA?

Why don't you build the Sig .40 size cub.
Old 07-27-2005 | 10:14 PM
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Default RE: Lightweight Kit for an OS 40LA?

How about a Clancy Aviation Big Bee?
Old 07-28-2005 | 07:24 PM
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Default RE: Lightweight Kit for an OS 40LA?

how about a SIG Kadet Senior with ailerons? I'm flying a Senior with no ailerons with a LA 40 it flies great, plenty of power. I am in the process of building another wing with ailerons and I'm going to keep the 40 on it.
Old 07-29-2005 | 08:58 PM
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Default RE: Lightweight Kit for an OS 40LA?


ORIGINAL: woops

Why don't you build the Sig .40 size cub.
I got it narrowed down to the GP 20 size Cub at 61.2" and rated for a .15--.25 engine. Or the GP T-Craft at 56" and rated for a .20--.32 engine.

It's going to be a dedicated float plane. I won't install any wheels on this plane.

The Cub has a longer wing and more square inches, but it's only 28 more squares with a wing thats 5" longer in span. That means it's got a high aspect ratio wing. The fuse is only 39" long--so this is a short coupled airframe. I don't know how that will effect my take-offs with the plane dedicated to floats. I've seen a lot of Cubs that were a handful on the runway. Just not sure if the floats will help to make it track straighter.

The T-Craft would also serve well as a float plane. The fuse isn't as short coupled as the Cub. It's almost 41" long with only a 56" wing. So, it's a bit more stretched out. Generally, a longer fuse will tracker more stable or straighter on the runway. Again, I'm not sure if the floats will make a difference or not. The wing is 5 shorter, but it only gives up 25 squares to the Cub.

Both planes are supposed to weigh the same. The T-Craft will have higher wing-loading. But an ounce or two on the wing loading isn't going to kill me.

I'm on a budget here. Afterall, I am using a 40LA here.[&:] The T-Craft is $20 cheaper. Thats the cost of 1 servo for this plane, so I'm leaning more that way.

I always swore I'd never build a Cub. I haven't seen one yet that didn't handle poorly on the ground and act squirrley in the air. It does look like a cool float plane. Buying the GP .20 size floats would be a shoe in. They are MADE for the Cub. So, thats a plus, but I never really struggled with making a gear mount.

I'm about to just flip a coin.
Old 07-30-2005 | 08:41 AM
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Default RE: Lightweight Kit for an OS 40LA?

Sig Mid Star 40

One of the best flying planes ever designed. Make it a tail dragger and keep it light and you'll have a ball. I taught my son to fly with one and later won a couple of fun fly competitions with it. It had an FP 40 in the nose and that was more than enough.

Andy
Old 07-30-2005 | 03:35 PM
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Default RE: Lightweight Kit for an OS 40LA?

I'd go with the cub. A cub is meant for the water. The taylor craft isn't going to be as easy to line up the floats and won't look as good in my opinion.

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