I'm planning to buy a new 3D .40 size which is NOT a funfly. I thought about the KMP's Kantan 50 ARF. I'v heared it's quite heavy, so I'm planning to put on it an OS 61 FX, ST 61 or even ST 75. All with Pitts mufler, of-course. What d'you think??
And what about servos?? I have 5 standart servos and one 4 kilos high-torque. which should I use to which conrol surface and what should I buy in case mine wouldn't be enough??
And most important: What d'you think about the plane itself? I saw a vid with a 52 2-strokes engine and it looked great (in the review).
I have a little budget problam, that's why I can't afford a 4-strokes engine, so I decided to go for a 2-strokes so I'll have enough money to buy reasonable servos, and although I need servos which are not too expensive.
SOOOOO what d'you think?

Come on guys!!!!!!

No personal experience with but take a look at
UltraRC Katana & Yak.
www.ultra-rc.com

Ill second the Ultra RC Katana!

Yeap, thats it.
Did anybody experienced it personally or know somethings about it?

http://www.rcuniverse.com/magazine/a...article_id=421

Yeap thats it, I saw that review. Just wanted some more details about my optional combinations. Does anybody know about my combinations?

Your engines might all be a little on the heavy side. Try staying with 50-53 2-strokes. I would put my Irvine 53 on it with an APC 13-4 prop. The OS 61FX is 20 ounces without muffler, 24 with. The Irvine 53 and OS 50SX are both about 15 ounces without muffler, 18 with.

For a 4-stroke, I'd put my YS 63 on it with an APC 13-4W prop.

I can blance the weight and CG. The question is: Will the surfaces loads will be enough to get over the power? I mean, is it built strongly enough to survive the G forces and other things that come with over-power?
I just don't have any reasonable 53 engines in Israel, and I'v got an obsession to over-power.
So, again, will the construction stand that over-power of a 60 engine?

I you want a really good engine for a cheap price get the Magnum .52 2 stroke for $99.99

http://hobbypeople.net/gallery/210760.asp

A guy I know has one in a .40 size Edge 540 T from aero-works it is a great looking engine and from what I can see is real reliable too

you should have a good power to weight with this engine.


4 stroke --> Magnum .72 4stroke $179.99 --- about the same price as the .61 FX

http://hobbypeople.net/gallery/210945.asp

I you want a really good engine for a cheap price get the Magnum .52 2 stroke for $99.99

http://hobbypeople.net/gallery/210760.asp

A guy I know has one in a .40 size Edge 540 T from aero-works it is a great looking engine and from what I can see is real reliable too

you should have a good power to weight with this engine.


4 stroke --> Magnum .72 4stroke $179.99 --- about the same price as the .61 FX

http://hobbypeople.net/gallery/210945.asp

Nothing wrong with over-powering, you just have to live with the high wing loading as a trade off.

Thats exactly what I'm asking. will it stand the loads?

if you want to over power it is that possible get a k & b 61 twister same weight as a 46

Not imported to Israel.
And even if it would: Every over-power is possible, but not nessecerilly reasonable... I can even put DA 100 CC if I want (and have the money). I need over-power that will be a good and strong over-power but will not kill the plane (such as over-loading on the surfaces, too high speed, etc.).
So should the OS 61 FX or ST (Super Tiger) 61 be OK??

It'll be 6 oz overweight in the nose. You want a 3-d plane to be a little tail heavy. It should work, but it may land pretty hot, and dead stick landings could be real tricky... If one of those 4-strokes are only marginally more expensive, then I would suggest one of those, the sudden torque is alot of fun. I have an O.S. 91 4-stroke on a U-Can-Do 60. With 25% cool power and a 15 x 4 prop, it hovers at less than 1/2 throttle. That little plane should be plenty fun with an FS-70...

Not always true.... compare the weights of the engine, and put the largest and lightest you can on it.. some of the smaller 2 strokes weigh the same as a larger 4

Also, I seen a video of the katana with a YS63 and it was awesome... so mine is getting a saito .72!

John, I was referring to his original list of engines, they all seemed heavy. I'm saying that the trade off with a more heavy, and more powerful engine is wing loading. Also earlier I stated that I too would use my YS 63 on that ARF (See post #8). The YS 63 is about 8 ounces lighter than the OS 61FX so there is no trade off in wing loading with the YS. But thanks for the info.

Check out the twist 3d from hangar 9 i have a tt.46 on mine and it hovers at 1/3 throtle. Plus is very chaeap.

Thanx everybody.
I will tell you what I decided when it will be final.