DKjens

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Aviation Models is the former TOC1, this is their web site: www.TOC1.com

I have one of these 37.5% Yak 54s coming late this week. I will make this my build thread, but wanted to post a picture of it now, and list what I plan to put in it.

I will install my Sala tuned DA150 on headers and very likely get a new pair of JMB cans. Once I get the plane here, I will see if the largest cans will fit, or if the size down are the ones to get.

I wil either install 13 Futaba S9152 or 13 Hitec HS5995TG, 3/ail half, 2/elev half, 3/rud, powered through a Smart-Fly Power-Expander and controlled by a single Futaba 138PCM Rx. If using the Hitec servos, I will run 2 x 2-cell 4800mAh Li-Ions through Cermark switches to the Power-Expander, if using the Futaba servos, I will use 2 Fromeco regulators. I plan on not using matcboxes, since servo and linkage matching is very possible on wood planes with the screw in control horns.

I really like the way the larger 40% Yak flies, but coming from a sleek Extra300, I had a really hard time getting used to how slow it moves. This new 37.5% Yak should have a more streamlined cowl and fuse, thinner wings, and it the final weight ends up at 37.5 lbs, it should be quite quik as well.

I was very impressed with the workmanship and finish of the 40% Yak, and even though it seems incredible, with Garrett's input and guidance, this new 37.5%'er should be even more impressive.

This is the scheme I am getting, and I have also posted some pics of the structure.

DKjens

T. Bob

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It is truly amazing how ARFs have come along.

DKjens

Question do you think that 3 5955 and 2 5955 for the ailerons and elevators is necessary?

It seems like over kill.

On my Carden Edge 2 5945 and 1 5945 on the ailerons and elevators and it just fine.

DKjens

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T.Bob,
Actually, if using Hitecs, it will be the 5995TGs on 7.2V, having some 420 ozin of torque each. If using the Futaba S9142 on 6.0V they will have about 280 ozin of torque each. Yes, using as many 5995TGs as I plan to may be overkill, but for the purpose of building this plane on a thread, I don't want to do anything but follow the instructions. If anybody wants to attempt using less servos, it is entirely their right, and may be very sound, but I will not display a thread, which may cause problems, due to not following instructions. I know that the akkumulative torque will be above the required, bet aileron or elevator flex may occur, if using less # than per instructions.

And yes, the build, fit and finish of this airframe just knocks my socks of. Garrett Morrison has had much influence in the design and konstruction of this plane. I have read posts from people who have already taken delivery, and they can't hardly describe how light the fuse feels when lifting it. This plane is still a large plane, although not a 40%. But at 121" wingspan and 2854 sqin of wing area, and if coming out at 37.5 lbs, it will float very well.

DKjens

Mad Mat

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I don't believe you can build a plane according to instructions.......... (naturam expellas furca, tamen usque recurret ) Its against your nature.

I'll take any bets that it comes out over-powered, and at least 10% under the recomended weight.
Prove me wrong mate

Age. Fac ut gaudeam.

Mat

DKjens

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Oh boy, the doctor is in!!!!!!!!!!!!!!!!!!!!

bladebender

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have a orange and blue one sitting here waiting for a motor. just picked up a power box with a programmer so its easer to set up three rudder servos,an wings would like to know more about the best cans to use RICH

bladebender

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I would like to say Sammy at Aviation models is one of the best and most helpful person, I have delt with in a long time RICH has returned my calls right away

cbk07

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Rich, I have had the exact same experience with Sammy. VERY helpful and shipped my plane with tracking numbers the same day I ordered it. Let's see some pics of the orange/white/blue scheme. Can't wait to get mine. If the quality is near my 40% I will be very happy. Craig

DENNIS C

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Guy's i might be able to talk to BladeBender into taking it out of the box and take some photo's tomorrow.

DENNIS C

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Hey get that motor mounted on the SUK.

cbk07

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Dennis, looking forward to the pics. Mine should be here Monday. I can post some then if you guys are not able too. If you guys are looking for a 150cc ARF, this should be the killer. Sammy also said he has a couple of ARCs in stock for those of you who want your own scheme and is even willing to get them shipped over here in laser cut kit form for the guys who have to build their own. Can't wait to see the 37.5 Craig

cbk07

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Speaking of pics, where is yours Jens???

DKjens

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I'm just picking mine up from the Forward Air terminal tonight, I will probabl leave in an hour or so, give the LA traffic a chance to die down a bit. Boy, give a guy a chance to get his plane before posting pictures of it . And, It'll be to late to do anything tonight, tomorrow is work and some party in evening, and garage/building room has two planes in it that need to be stowed somewhere. Do you feel the pain with me yet? No, dang, I tryed he he.
DKjens

11:30 p.m.
Came back with the crate, and pulled everything out. It's no surprise that this plane as well is packed absolutely great. All items wrapped in bubble wrap inside cardboard boxes in the wood crate. I don't think, short of using a steel box for crate, that you can pack an ARF any better.

Having been used to tote the 40% Yak around, this 37.5% looks small, but it's decieving. Because this Yak has been designed to be sleeker, it looks smaller than it is. When comparing to the 40% Yak, and one can also just look at the numbers, it is almost as long. I did not have a chance to compare wing and stabs. Again, the workmanship is just absolutely fantastic, and that is not even all the bang one gets for the buck. It comes with a 5" aluminum spinner, main wheels, control linkage (I didn't get a chance to unpack all the hardware), a fuel tank (did not see the volume, but looked to be around 40 oz), the canopy is already trimmed and painted. All in all a hardware package that will save the owner probably $100-$200.

This is a fantastic quality, offered at a price I doubt we will see from any other company, at least for a long time. And as has been posted by others, Sammy Lee is a delight to deal with, he really puts alot of pride in his products, and I know that he is not happy, if the customer is not happy.
DKjens

cbk07

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Thanks for the update Jens. Can't wait 'til Monday to get mine. Craig

Columbo

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Sammy is great to deal with! He also has a 33% Yak coming out that I am
looking foward to.

Greg

DKjens

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I just unpacked some more, and took a better look at this plane. I took these pictures at 5-5:30pm and the light was not the best, but it will show some very nice features.
1. Absolutely ludichris throws are possible on all surfaces, check the pix of the wing and aileron.
2. Hinging is going to be so easy. All hinges fit very well, and no enlarging of slots is going to be necessary.
3. All hardpoints are marked with little arrow stickers, if you miss it, well, let's not go there he he.
4. Canopy is already painted and fit is great, all that's needed is the trimming, which follows a guide line, and attaching.
5. Canopy frame fit is exellent, and instrument panels are already build up for both pax.
6. Rudder will be removable with wire pulled out through top.
7. Pull-pull wire is now attached to bottom part of rudder.
8. Hardware package is extensive. As I see it, I will just need control surface horns and tail gear assembly.
9. Everything is built very well and is extremely light.
10. The wood kit is machined where needed, tristock is notched for fit.
Here are some pictures:

DKjens

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And the last ones.

DENNIS C

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Jens what do you think that clear plastic film is in the fuse up front.

Also is that a hole in the top of the rudder for removal. i didnt see that on bladebender's plane

mu2driver

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That thing is SICK!!!!

Cant wait to fly it...

More pics Jens

T. Bob

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DKjens

The Plane looks amazing.

Please keep us posted on your progress.

Your dog doesn't look too impressed .

DKjens

My Feedback: (50)

T.Bob,
It takes the mailman or another live animal to impress my dog he he. Funny enough, we rarely have Possums moving through our backyard anymore ha ha.

Dennis,
I noticed that clear covering as well, and I don't know why it's there. I won't spekulate until having moved further with the plane. es, the hole on top of the rudder is for the wire that makes the rudder removable, maybe bladebender's is covered with covering. If bladebender's has the two piece hinges in his kit, then there should be a hole there.

DKjens

moldmaker

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DKjens noticed you have the Yak 40 percent i just ercieved one last fri. Did not get any instructions .Can you tell me the best CG setting for test flights and also control settings any info will be very helpfull Thanks

cbk07

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Moldmaker, the cg is available on the toc1.com website. If you are using a 150cc engine, mount everything as far forward as possible including the rudder servo(s) and batteries. Mine ended up almost 2" tailheavy for the maiden and still flew fine, albeit a bit pitch sensitive. I have since moved everything forward and have even moved the engine forward and it flies much better.
As far as the throws go, I have never measured mine, but this plane is so docile it is not super critical. I fly mine on 3D rates all the time, but do fly with alot of expo.
Also, make sure you have ALOT of servo rudder as the rudder is huge. My friend used 2 Futaba 5050's and this was no where near enough. I have a Seiko (he does too now) and it is PLENTY of power. You will be amazed at how easy to fly and 3D this thing is. Please let me know if you have any other questions. Craig

DKjens

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Eh, what Craig said he he. I think the reason the 40% is very docile even in a tail heavy condition, is because it can not fly fast, so it never becomes extremely pitch sensitive like other, faster planes would. Mount ALL your batteries in the engine box. I used 3/4" standoffs when mounting my DA150, even longer can be used. It is good, with a cowl like the 40%er's, to push the prop out and away from it. This plane will just about hover itself, if you have enough servo on the rudder, knife edge loops will be very easy as well. When you go and fly the plane, be prepared that it flyes slow. That is one thing to get used to. And using a big 280cc engine, which is on mine now, does not make it fly much faster.
DKjens

moldmaker

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Ok Guys thanks for the info .One other question what did you do for air outlet opening on bottom of cowling ? The opening provided looks kind of small conserned about enough air flow over 3W150 Thanks