different flight qualilites of diff acft!?
 

i was wondering what are the different flight perfermance of lets say, cap 232, extra 300 or 330, or giles 300? i was looking at the yellow aircraft .60 size arf and seem to be a quality arf, but dont know what to choose? any input on flight qualities of each particular model, even if it isnt made by yellow arcft!

thanks rod

RE: different flight qualilites of diff acft!?
 

Greetings Rod and welcome to RC Universe.

Flight performance of all aerobatic planes will be similar since they are designed for the same purpose. Less than a 5% difference could be expected. Differences do make a plane that will excel at one thing and not as well in others. In short a design is always a compromise. Hope the following helps:

Extra 300 and CAP232 (also the CAP231EX) share the same general wing. Four way tapered with leading and trailing edge taper and thinning from root to tip. The Extra has the Stabilizer mounted closely in line with the Vertical Fin/Rudder where the CAP's have the Stabilizer mounted forward of the Fin/Rudder. This makes the elevator more sensitive on the CAP and makes for exciting 3D with the CAP. The Extra would fly a little smoother and the CAP be a little better at 3D. CAPs exhibited quite a bit of roll/pitch coupling with application of Rudder due to the high engine placement, low wing and forward high stab placement. A computer radio is needed to mix these out.

The Giles and Edge have almost opposite wing platforms (within the range of aerobatics). The Giles has a straight Trailing Edge where the Edge has a straight Leading edge. Many recent pattern planes have a straight trailing edge for axial rolling qualities. The Edge straight leading edge makes the wing harder to stall so 3D performance is good. Many low scores have been received with the Edge in spin maneuvers as the plane doesn't have a clean stall break. If the judge thinks the spin was entered from a snap roll then a 0 (zero) is awarded. If you compare an Edge to a Laser it will be almost the same plane with the exception of the Edge straight leading edge.

Overall I think the Extra has the best compromise for flight performance. Your choice however will depend on your own goals. It is somewhat like cosing ice cream flavors as opinions will differ.

Good luck with your choice.

EXCAP232
(combination of Extra and CAP232)

RE: different flight qualilites of diff acft!?
 

I'm reading between the lines here, and coming up with a question of my own. Are you talking about a first plane, here? None of the ones you mention are ideally suited for a first aerobatic plane.

Just trying to be helpful,
Dave Olson

RE: different flight qualilites of diff acft!?
 

I would say if you are wondering which one will fly the best, the answer is quite simple especially for a smaller model.... THE LIGHTEST ONE!

I've flown many aerobatic models and it seems to me that wingloading and radio gear (as in decent servos with good centering) make the biggest difference in how airplanes fly.

If you're looking for a good quality .60 ARF I would recommend Kyosho and Great Planes. Yellow Aircraft planes, unless I'm mistaken, come out on the heavy side. If price is no worry, then Extreme Flight has their new .60 size Yak coming out soon that looks nice.

Keep in mind except for the Yak, none of these will be 3D machines.

I hope you're not getting in over your head too fast, my first aerobatic plane was about my fifth plane.

RE: different flight qualilites of diff acft!?
 

For best first time acrobat?
get the lightest -with the shortest wing to overall fuselage length
or simply build as light as possible -then saw off the wing tips .
really -
the EDGE actually is one of the easiest to stall the wing -due to the straight line LE.
BUT it is also one of the longest fuselage moment arm designs (actual CG to horizontal tailplane
Personally I don't like em (scale EDGES)
But - take an EDGE and shorten the wing -making it simply a short squared planform (a rectangle ) and you have an excellent aerobatic setup- it will stall cleanly - will roll like a pencil and you can 3D it till hell freezes over -and keep the airoil as thin as possible.

The "Why" is in the wide stubby wing
A - it has all of it's drag/lift in close - so any tail group control is far more effective
B - the short wide wing mushs easily at very low speeds and the airflow is outbound -which stabilizes and reduces what some call "tip stall".
C-the RN increases with the wider chord-far more effective in lift - at speed.
D- the frontal drag is less.
and
E - ifyou don't believe this - build a foamie from flat foam and try the various planforms.
or look at the best fun flyers - ALL short wide chord wings.
Is there any full scale design fitting IMAC rules that fit this layout?
yes - there are many homebuilts which fit nicely and some actually have entered full scale IAC competition. they are not well known because the full scale ones have tiny engines and don't do as well as the power setups.
The reason the bipes do well i because essentially they ARE this setup -
My new model will be a Cassut- 1920 sq in - ZDZ100 80" span - under 20 lbs.
according to my lil test models -it should work .