xoon

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i got $190 total right now, and i can't wait till July to get new Parkzone 3D plane so i'm going to get an accel katana 40 gs plane. i'm planning to put a TT .46 pro on it, would that be able to hover the plane? what prop? and is there anything that i need to know when building and flying the plane? how strong is the landing gear? problem w/ tailwheel? thanks a lot

novabill

xoon,

That tt pro .46 will hover it no problem. Use an APC 12x4 for good throttle response and you'll enjoy it very much.

seanychen

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Status: offline i got $190 total right now, and i can't wait till July to get new Parkzone 3D plane so i'm going to get an accel katana 40 gs plane. i'm planning to put a TT .46 pro on it, would that be able to hover the plane? what prop? and is there anything that i need to know when building and flying the plane? how strong is the landing gear? problem w/ tailwheel? thanks a lot

_____________________________

1) TT .46 will be able to hover this plane. I use APC 12x4, and it does quite well. You can see how it works in the following video:

http://www.rcpics.net/view_single.php?medid=55587

2) For building, everything is pretty straight forward. There is an addendum to the instruction on how to align the trailing edge fairing. If you don't have it, make sure it's in-line with to the stab. Depending if you get the Monokote version or Chinakote version, you should never heat gun Chinakote, lest you want to re-cover the region.

3) Landing gear is plenty strong. Because it's shorter, it doesn't bend as easily. It's also the lightest stock landing gear I've seen on profiles. Both gears together weigh 1 oz total. I only had to bend them back slightly, that's after dozens of harrier landing.

4) The stock tail wheel, which is non-steerable, is long & flimsy. It will knock the rudder during landing, even taxing on rough terran. I put Sullivan tail wheel assembly because I needed the tail weight. If you want to save weight, I'd advise bending a shorter, but stiffer tail skid.

southern_touch9

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It will do fine with the pro .46 in it you just need to move your CG back a little bit. I had one in mine and then I put a saito .72 on there an I am A LOT happier with this combo and heres why. If you notice in the above video (which was good) that the plane wants to walk or wash around when entering a hover this is caused by one of three things usually. The prop is too small (thats not the case here b/c a 12 X 4 should do fine). The balance is too far forward. Or you need to go to a four stroke so you can sling a bigger prop. The more prop you have the more prop wash you can create at slower speeds. The more propwash you create at a critical speed such as entering a hover the more effect your control surfaces will have in stabalizing the aircraft and "locking it in". By moving the CG further back it also makes the control surfaces aft of the CG more effective (which will also lock it into a hover). However there is a trade off on moving the CG back as a solution for everything and that tradeoff is that if you move it too far back it becomes too touchy in flight, it will dart like a dolphin. Either way you will love the plane and it does some of the best harrier rolls out there, just play with the throttle to keep the ailerons rolling the plane after stall speed.

seanychen

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I noticed that when I had the Saito 82 on w/ Pro Zinger 15x4 prop, it is a lot more stable at hover entry and harrier, thanks to the 50% more prop wash.

AHPowelson

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I fly mine with a TT 46 pro and a 12.25 x 3.75 prop. It has more than enough power to rip out of a hover on 20% nitro. I'm going to try a 12x4 today to see how it does.

xoon

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let me know how it does... cause all i have right now is APC 11x4 and i barely have enough money for this next plane. how does this plane perform w/ a APC 11x4? hover? how about prop clearance ( got some issue on the Funtana that's why i'm asking )?

seanychen

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Prop clearance is fine. I have plenty of clearance even with a 15" prop.

12.25x3.75 is a good prop, if you don't need instant response.

xoon

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so does the 12.25x3.75 doesn't give instant respond? what thottle position do you have it at when thottle? 1/2?

Shogun

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I have had at least 4 different encounters with guys attempting to use the APC 12.25x3.75 prop on these 40 sized profiles with .46 two strokes. In every situation that prop proved to be too much for these engines. If your running a .50 it seems to be a pretty good choice but the ringless .46's simply don't have the torque to deal with the props weight, especially a brand new un broken-in .46 and the throttle response suffers noticeably.

In all of the above mentioned cases I suggested that the guys try the APC 11 x 4 and see how it goes. In every case the prop change made a huge difference. The secret is that two strokes make their best power when they are allowed to rev high and the load on them is kept as low as possible. The 11 x 4 allows for this and the throttle response is MUCH improved. Sure you have less air moving over the surfaces than a 4 stroke but hat only stands to reason as the 4 strokes are swinging 13 and 14 inch props. Don't let the smaller diameter dissuade you though as they move plently of air when they are spinning at the higher rpm's.

I have also tried the 12 x 4 APC and feel pretty much the same way about it being a bit too much for the .46's. Of course nitro content, plugs and the AUW of the plane all play a role ultimately but for best results right off the bat my vote still goes to the smaller 11 x 4.

Something else to consider is replacing the stock TT muffler with one of Towers mufflers. They are a bit lighter and offer a bit more top end power and better throttle response and they only cost at $15. These are probably one of the best performance upgrades anyone can make on an OS .46FX or TT .46 Pro as both have the same exhaust port and bolt pattern.

AHPowelson

My Feedback: (37)

I run YS 20/20 in my TT .46 with a Tower muffler. It will turn a 12.25 x 3.75 @ 13,000 RPM tuned conservatively rich. The response isn't what I would call instant, but there's very little lag in the spool. I've found the quicker response of an 11x4 makes a light plane with the Katana GS twitchy. The plane flew so well yesterday I never got around to trying the 12x4. I would completely disagree that a 12.25 x 3.75 is too much prop for a healthy .46 2 stroke.

xoon

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great to hear that it would run good w/ an 11x4. i will be getting the plane next week if it's in stock at my local hobby shop. is there anything that i need to know about this plane when building?

Shogun

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AHPowelson, while it might be no problem for you to spin a 12.75 where your at in FL, it's a whole different matter for those of us in the midwest. Here in NE we're at 1100 Ft. ASL and there is NO .46 around here that will spin that prop at 13,000 prm. I can barely get that out of a 11 x 4 on 15% fuel. Xoon is in CO and i'll bet he's at a higher elevation than I am.

EL TEMUCANO

ON MY UCDO 46 I HAVE AN OS .46 AX WITH 12/4 APC I THINK IS THE BEST,,,,, I TRY WITH 12.25/3.75 AN THE AX DECREASE THE RPM....
WITH 12/4 CAN DO HOVER AND WHEN YOU WANT PUT FULL THROTTEL AND THE PLANE GO UP WITHOUT PROBLEM AND INSTANTLY.

SERGIO

xoon

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yeah, i'm about a mile up above sea, so up here we tend to run bigger props

xoon

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so what percentage of hover does the KATANA GS 40 hover w/ a TT 46 w/ 15% nitro fuel?

xoon

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and would standard ball bearing be good enough?

and how does it hover? twichy? easy to hover? torque roll? how about... what 3D manuvers can't this plane do?

exeter_acres

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standards are fine... hovers easier than my foamies, but I have practiced lots..

Hmm.. manuever it can't do? Not sure one has been invented yet..

As long as your .46 is strong and healthy it will do just fine... MANY people run that combo with very good results