I just have to come in here and recommend this plane...................Its a 71" CMP giles 202 from Nitro planes. I got mine at a fly-in for $50.00 after the guy bought it and stripped it of its covering(its a STRANGE scheme). I've always hated giles planes for some reason,but for the price,I couldnt pass it up. Plus I had enough left over covering at home to cover it. Anyways.....I've been flying/testing this thing for a few weeks now with an old GMS 1.20 and this thing flies AWESOME and the hardware it came with and the construction of it is simply the best of any arf I've seen yet! This is easily the best flying plane I've flown yet. Its so forgiving it isnt even funny. It flies predictable both slow and fast. It does 3D(at least what minor stuff I'm capable of) betting than any of my other planes. For an ARF....its just an incredible plane and one I just have to get on here and recommend. And I posted this in this beginner forum because it would make an wonderful first time aerobatic plane,and the price is right too! Its just amazes me and the guys at the field everytime I fly it and I dont say this stuff lightly as I have alot of different aerobatic planes of different manufacturers,and I never liked giles before,lol.


http://www.nitroplanes.com/give214071en.html

I have heard that the CMP (Chinese Model Products) planes on average are good construction, and covering is fair. There will always be some with minor or even major defects.The hardware may be less than expected and some replacements may need to be made.
It is well known that the plans that come with these models are useless (not a major problem if you have experience assembling ARFs)
There is also some question about how reliable the customer service is at Nitro Planes should you have any problems.

Glad to hear your Giles is flying well. As you probably know, they have a nasty reputation.

Whats the nasty reputation. I just bought a midwest giles kit off ebay because it was cheap. So maybe it was cheap for a reason?

A Giles 202 has to be flown fast because of the thin wing, I could be wrong but it does have a thin wing. A guy at my club had one and he hated it. One day he went inverted after take off got to slow and stalled and went into a spin. He could have rebuilt it but he said it wasnt worth it. They like to land very hot and fast. That was the only giles I have ever seen flown. In the hands of a good pilot, I bet it would be a nice plane.

I'm pretty sure thickness has nothing to do with the speed at which is has to fly. I think you are confusing wing area with wing thickness.

Yeah,I used to hear that that needed to fly fast too...kinda like a cap airplane. But,this giles flies superb slow. It coulc be because this one might be kinda light with that 1.20 2 stroke in it.

yo man... this plane looks sweet, no other Giles looks quite like it... its a mid wing so I cant see why you would have any problems with it... and looking at the wing construction its very similar to a Phoenix Diabolo... and that is also a nice plane, so should this one be...

Brett: Thin means a lower coefficient of lift because of the shape of the wing. The airfoil is smaller in diameter (for lack of a better description) so it has less lift, so it must be flown faster.. and it will fly faster because it has somewhat less drag. It all "factors in" when considering how the plane will fly.

That's just my view on it, I could be wrong.

I would bet Gordon will chime in here with a quote from "Stick and Rudder" (this, by the way, is definitely not a negative statement) GBoulton (Gordon) has taught me a lot, and has recommended the book to me which I bought. It has some very good information and is easy to read. Hey Gordon.. we ought to get royalties on this!!!

CGr.

Probably due to their aerodynamic configuration, they have a reputation of stalling very easily. I have seen one stall in a high speed turn and simply fall out of the sky. Sure, they can be flown, but it would appear that you have to be particularly alert.

My thought would be that it wouldn't have a lower coefficient of lift, but only lower coefficient of drag. I would really like to know if the thickness has anything to do with lift.

Some speculation without direct experience.

I have this plane and people have purchased a couple of them from me after I've put them together.

They are excellent flyers.

They actually float in and the only problems with landings is getting them down, because they want to keep flying.

The wing loading is pretty low.


The hardware included is also not bad. Robart style hinge pins are used throughout.

An aluminum bell crank is provided for the tail.

The smaller .50 sized version is also a bargain, it includes CF landing gear, etc.

This is one of the better CMP planes, though I hate the "alien" scheme.

I do advise applying Top Flite Clear Coat on the covering to prevent the paint from cracking.

The paint scheme is applied over the China Coat, so the clear coating is a good idea.

The thickness of the wing does add lift, as well as drag. Drag on an airplane is divided into induced drag, skin drag, and parasitic drag. Induced drag is drag that is introduced with lift, and the two are related to each other. More lift equals more induced drag. Skin drag is the drag from the air sticking to the surface of the plane, the more surface area, the more drag. Parasitic drag has to do with wheels and stuff sticking off of the plane, so that is not really a concern to the wing.

As the wing profile gets thicker, the skin drag increases because there is more area on the wing, that is not a difficult concept to grasp. However, induced drag also increases. This comes from an increase in lift. So a thicker wing at the same speed and same angle of attack will produce more lift than a thinner wing.

Don't trust me, go to this website and play around with it to come up with your own conclusions.

http://www.grc.nasa.gov/WWW/K-12/airplane/foil2.html

Set the angle of attack at some positive amount (5 degrees or so), set camber to 0.0, then adjust the thickness from thin to thick and watch the lift number. It will increase with the thickness.

Cool thanks!