KATANA 39% - KRILL MODEL

[Flyinrazrback]

I spoke to Tim Davie about his, he said that the gear is strong, but it flexes something nasty, especially in crosswinds and is hell on wheelpants. The Abell custom gear (got the idea of this gear from the BBW Carden 300 build) will be T4 and 3/16" opposed to the T6 gears that are 1/4", and should save about 8oz over the T-6 gear before milling out the center block. It is also stronger, so with the T4 milled gear I should be close to the weight of the factory glass gear.

[joenella]

Hi Flying

Look here.

ZDZ 160B2RV-J

The new 160B2 with 46 mm (1,81") stroke based on the ZDZ 80RV-J

Model opposed twin with 160 cm³ (9.8 ci)
· ZDZ- ignition
· 42 month warranty
· weight incl. ignition: 3.650 g


That's 160 super

And now 3W 157 xi B2 TS CS

Hubvolumen: 157ccm
Leistung: 20 Ps /14,71 kW
Bohrung: 50mm
Hub: 40mm
Drehzahlbereich: 1100-8500 min-1
Gewicht: 4105 g incl. Zündung
Kurbelwelle: 3 Kugellager
Pleuel: Nadellager an beiden Enden
Benzin: 1 : 50 - 1 : 80 Mix
Zündung: 6,0 V; 2x Boxer Zündung
Propeller 2-Blatt: 32 x 12; 32 x 14; 33 x 10
Propeller 3-Blatt: 29 x 12; 30 x 12;V

And

3W 157 xi B2 CS

• Hubvolumen: 157ccm
• Leistung: 19,5 Ps / 14,34 kW
• Bohrung: 50mm
• Hub: 40mm
• Drehzahlbereich: 1100-8500 min-1
• Gewicht: 3930 g incl. Zündung
• Kurbelwelle: 3 Kugellager
• Pleuel: Nadellager an beiden Enden
• Benzin: 1 : 50 - 1 : 80 Mix
• Zündung: 6,0 V
• Propeller 2-Blatt: 32 x 12; 32 x 14; 33 x 10
  Propeller 3-Blatt: 29 x 12; 30 x 12;

brgds
Joen

[Flyinrazrback]

Joenella, I have had both, and weighed them both on an accurate scale. The 160 super with ignition, spark plugs, prop bolts, etc, was 5oz lighter than a DA 150, and 4oz lighter than a 3W 157 (non-twinspark). 4oz is nothing IMO, and the folks here running DA 150s on cans are ending up tail heavy with 4 elevator servos in the rear, so with the zdz being lighter than that, can't help the CG. I am only going to run 2 elevator servos, but with weight in the counterbalance to help. Don't get me wrong, I liked my super 160 on JMB cans a lot, I would buy another one in an instant, but for this plane I like the 157 better because of all the low end grunt that it makes compared to the zdz.

[joenella]

	Quote: Originally Posted by Flyinrazrback
	Joenella, I have had both, and weighed them both on an accurate scale. The 160 super with ignition, spark plugs, prop bolts, etc, was 5oz lighter than a DA 150, and 4oz lighter than a 3W 157 (non-twinspark). 4oz is nothing IMO, and the folks here running DA 150s on cans are ending up tail heavy with 4 elevator servos in the rear, so with the zdz being lighter than that, can't help the CG. I am only going to run 2 elevator servos, but with weight in the counterbalance to help. Don't get me wrong, I liked my super 160 on JMB cans a lot, I would buy another one in an instant, but for this plane I like the 157 better because of all the low end grunt that it makes compared to the zdz.

No problem.

Hmmm low end grunt missing on the zdz compred to 3W ??? different engine, zdz almost square and 3W over square, sorry wrong exhaust setup zdz are made for low rpm grunt.

brgds
Joen

[Flyinrazrback]

Joen, I ran the recommended JMB cans on my super 160. My comparison between this motor and my 157 was the 160 made a smidge more power on top (100-200 rpms), but did not have the low end torque of the 3W. IMO, the zdz liked to rev, but did not perform as well as the 157 did on the larger props (the zdz did not like the 3W 3D prop, the 157 will rip the snot out of it). Its all subjective, but those are my findings. I also see the similarity between my friends zdz super 80 and my 3W 80.

[joenella]

	Quote: Originally Posted by Flyinrazrback
	Joen, I ran the recommended JMB cans on my super 160. My comparison between this motor and my 157 was the 160 made a smidge more power on top (100-200 rpms), but did not have the low end torque of the 3W. IMO, the zdz liked to rev, but did not perform as well as the 157 did on the larger props (the zdz did not like the 3W 3D prop, the 157 will rip the snot out of it). Its all subjective, but those are my findings. I also see the similarity between my friends zdz super 80 and my 3W 80.

Sorry.

Forgot this is a thread about a Krill Katana and not engine talk, sorry

brgds

Joen

[skymaster68]

it´s the Katana a good IMAC performer?

[JagerBomb]

I built one recently for Dave Deaton. I had no problem mounting a DA150 with the proper right thrust. Per the instructions, you need to relieve the right side of the fuselage and reinforce it with carbon tow.The spinner had 3/16 spacing between the back plate and the cowl. I also installed MTW 110 cans in it as well. The Krill kits are definitely not on par with a Comp-Arf. Quality of the layup, paint, canopy and overall constuction are ok, but not as clean or as well thought out as the C-A. I covered the wood for the servo plates with red ultra-cote and it looked ok. The servo horns are not centered over the hinge line, which is one of the first things you learn in proper plane setup. I will agree it is a fantastic flying plane though. I have the instructions on cd if you need them. They are poor at best. I'm not totally bagging on Krill. They just are not comparable to Comp-Arf in my opinion.

Here is a vid of it's first flight. I believe in a careful breakin and easy trim flight

[Cracky]

	Quote: Originally Posted by JagerBomb
	Here is a vid of it's first flight. I believe in a careful breakin and easy trim flight

Yah you do!!!

[r1king76]

Hey guys, im the one bob b was helping with the build of my new krill katana,first off i want to say i love the airplane,we got alot of building done thus far, this is an airplane that is made for someone who has had experence building a plane of this caliber, with that said it is a good package to consider, the packaging (flown in frome czech republic) was a bit on the skimpy side, and the instructions are verry vauge, but other than that its great! i think we need to cut krill some slack, they are just entering the us market do not have their feet on the ground in the u.s yet,this takes alot of time, money and good people to accomplish , which if anybody knows anything about running a busness,people,#1 and money#2 are the hardest to find.this plane is well worth waiting for.phillip is the man to talk to about getting one of these planes and he is a great guy, with that said i want to get some input from you guys that have one of these planes on the exaust. i have a da 150 and have the cans from da. the front of the cans will hit the cowl , i have cut ( at an angle) the front of the cans off, the left can still hits the cowl. i will have to cut a hole in the cowle(which i have not done yet) in order to use the cans.what other options do i have for exaust? im not crazy about using tuned pipes, due to heat and holes in my fuse, do you guys thing it will look bad if i cut a hole in my cowle for the left can?

[TimDavie]

I'm glad I ordered the plane...still flying it and it is as manueverable as a 90 sized Funtana. Coming from the Czech Republic there is going to be some language barrier when it comes to construction, but it's not rocket science and you'll figure it out. I do wish the gear was more like C-A...had to trash the tailwheel after a month and the glass main gear I could twist like a pretzel. the hatch takes some getting used to and I wish they used a tube instead of a floating spar (like the 2.6C-A's). But it is a thin wing and not sure a tube would be the best choice after you do the math. Set the CG up as spec'd..if you get it right it does everything that a tail-loaded plane will do. if you get the CG back it has a nasty attitude just waiting to get ticked off every time you breath on the elevator. It is not forgiving in that configuration. After talking to Jason Noll about his setup, i went to one TG servo per elev. half and balanced the elevator by placing some weight in the CB. Lost over two ounces in the tail and was very glad I did it.

[xtra330]

Hi guys, thought I would chime in. I had bought John Glezellis' Katana he used in the XFC...set it up the way he had flown it and was very tailheavy for my liking. I ended up moving the 4800 Fromecos to the far front of the motor box, put on a heavy backplate spinner, and added quite a bit of nose weight. She flies precision very well and can still 3D with that CG position. I may could even add a little more nose weight, but I am going to fly it as is for now and learn the plane.

It flies at a brisker pace than an Extra or Yak, yet it does fly very stable at slow speeds, with no tendancy to fall out of the air. It just requires a faster speed to perform the way I want it to in IMAC work...but here again, that may change in time once I learn the plane.

Overall I am happy with the aircraft, it presents well in the air and snaps stop on a dime. Spins are straight ahead, Hammerheads require some prop blast over the top, more than I have been acustomed to, but nothing major. The mixes I have for knife edge coupling are around 2% on pattern rates, 4 to 5% on roller and high rates. Roll rate is ballistic and very Axial...on the horizontal as well as the vertical...downlines are a little fast as there is very little drag on this plane.

Would I get another? YES, but I would set it up with smaller servo arms and make it strictly for IMAC.

Joe

[lockjaw-express]

Help needed please:

I just received my new 39% Seba A (Red/White/Green) Katana and I have a few very important questions:

1) How many degree right thrust do I need for a two bladed prop? I will buy the SWB mount.

3) Where do I get the Greve Pipes like Jason Noll had in his plane? Also, what drop in mm do I need for the headers?

I am installing a DA-150 in my plane.

Thank you for your help!

[xtra330]

Hi there. I am currently do a build thread on my 2nd Krill. Go ahead and put the 3 degree of right thrust in as they say and a degree of up. You will need the 70mm drop headers, and the greves can be bought from DA.

I originally started out on the 2 blade, and have since went to the three blade..28.5 x12 Mej. I will be updating my thread tonight or tomorrow. Take a look, it may help ya out...
http://www.flyinggiants.com/forums/f...ld-finish.html

Joe

[lockjaw-express]

Hi Joe,

Thank you for the reply!

I have a couple of Composite-Arf planes, but this is my first Krill, and I am amazed how big the control surfaces are!

Will you be using any lead to counterbalance the Elevarors?

Again, thank you for the help.

BR, Mark