RE: Introducing the new 90-1.20 Yak QB

RE: Introducing the new 90-1.20 Yak QB
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RE: Introducing the new 90-1.20 Yak QB - 6/11/2009 6:26 PM

Draknkep

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Hi Hoverlow

My Yak was as you described , and I called Aero-works about this. It seems that they are using the same drilling template for a number of planes.. Use the holes that are the closest to what is called for in the instructions, and add one hole so that you have all four holes. This what I did, and have had no problems.

And yes, this plane has plenty of throw for 3D

SteveT<script type="text/javascript">titleAndStar(412,100,0,false,"","")

< Message edited by Draknkep -- 6/13/2009 9:57 PM >

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RE: Introducing the new 90-1.20 Yak QB - 6/11/2009 7:07 PM

jamesrxx951

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quote:

ORIGINAL: HoverLoW

Another question: This QB thing is really cool, but prior to good looking, there is no gap between the fixed and movable surfaces and so my servos are doing a hard work to get 43 degrees of deflection. Is this a good 3D aircraft?

you can get more throw than that almost 55 degrees. all of my aw planes were the same were the control surfaces were epoxied to close to gether. it is an easy fix. you will need a heat gun for covering, and now lift the control surface and on the bottom heat it up along the entire hinge line. just becarefull not to get it to hot. when the hinge line is warm/hot move the surface all the way up try to get it to hit the bevel. now tape it with the control surface at its max throw ,bevel to bevel. warm up the entire hinge line again now let it cool over night. by morning it should be fine. if not repeat. this is exactly how aw told me to do this and it works.

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RE: Introducing the new 90-1.20 Yak QB - 6/11/2009 11:43 PM

JCINTEXAS

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The Mark 1.35 swings an
APC 16X8 at 9,500 RPM on 5% nitro fuel.
Sounds like it's gonna be plenty of power for the Yak.
JC

quote:

ORIGINAL: jamesrxx951

quote:

ORIGINAL: JCINTEXAS

Thanks Frankie and all of you who responded to my questions about this airplane.
Here's another question. Would the MARK 1.35 glow engine be a good powerplant for the AW Yak?
Regards
JC

if it is stronger than a os120 i would have to think that it would work out just fine. what sized prop can it swing and at what rpm. i have a mld 28 and it swings a 18/6 @8200 rpm and it is awsome. i had a saito 150 swinging a 17/6 vess over 8k i beleive it been awhile and it was great also. so if it can swing a large prop it should be ok

< Message edited by JCINTEXAS -- 6/15/2009 9:25 PM >

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RE: Introducing the new 90-1.20 Yak QB - 6/12/2009 12:10 AM

capt1597

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jcintexas, i believe that after following this thread from the beginning that you have stepped to the front of the line with that " stump puller " mark 1.35. i have alwas heard you texas boys like doing things big. it should be a hoot. would love to see some vidios. happy flying, capt PS try a vess prop.

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RE: Introducing the new 90-1.20 Yak QB - 6/12/2009 12:11 AM

HoverLoW

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Hello, guys!!

Thank you very much for all information and advices!! I feel much better now!!!

I will be posting here my progress!!

Thank you again.

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RE: Introducing the new 90-1.20 Yak QB - 6/12/2009 12:27 AM

capt1597

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I too have now joined the Vess prop club started here by Frankie. i like my apc props but these are quite an up grade.

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RE: Introducing the new 90-1.20 Yak QB - 6/13/2009 3:32 AM

Scooterpilot

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Hi All,

I got a smoking deal a Aeroworks 90-1.20 YAK & picked it up today. The plane has 3 flights on it: This plane has a brand new MLD 28 cc gasoline motor with wraparound Pitts style muffler, obviously not broken in, it is extremely strong, 5 brand new Hitech 5645 servos, one digital Futaba on the throttle, Smartfly optical engine kill, all sevo arms, except throttle, are MLP alluminum, Dave Brown spinner, 2 Mpi switches, a 6 volt 2000mah ignition battery. I ordered a Vess 18X6 and it will be here tomorrow.

I want to drop some weight from this plane!! It looks like the stock fuel tank used for glow fuel is what was installed. My guess it's a 14 to 16 oz tank which is huge for this gasser. With the 28CC I'm guessing that an 8oz tanks is more then enough? Am I right or is that too small? I'll probably remove the Dave Brown spinner which leads to another question. Do I have to drill the prop or will the single prop bolt be sufficient? Any other ideas to drop weight?

Thanks

< Message edited by Scooterpilot -- 6/13/2009 3:33 AM >

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RE: Introducing the new 90-1.20 Yak QB - 6/13/2009 5:12 AM

Jimeni

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I had a 10 oz tank in mine. I think 8 would leave you with no reserve after a 13 to 15 min flight.

The single main bolt is fine on the MLD 28. I quit using the two smaller bolts along time ago, no problems at all. Alex at Cermark said they do not use them either. I'm not using them on my SPE 43 either.

The MLD hub looks just fine without a spinner, (on a yak) took mine off too.

I put the SPE 26 back in my Yak and sold it. I will never get rid of the MLD 28. Already got another plane for it.

To lose more weight. Lose the wheel pants. Go lipo. and mentioned, the spinner, fuel tank. Get feather lite wheels. You can safely remove quite a bit of non essential structure in this plane as well. Mainly in the receiver/fuel tank tray, and engine box ares. I also used a step drill on the landing gear base, and took off an oz. Mine with the MLD ready to fly was around 9 lb 13 oz.

< Message edited by Jimeni -- 6/13/2009 5:19 AM >

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RE: Introducing the new 90-1.20 Yak QB - 6/13/2009 1:06 PM

waynere

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Read the top of this page!

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RE: Introducing the new 90-1.20 Yak QB - 6/15/2009 8:58 PM

osartorius

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Great tread, lots of help.

I just start to build mine with a MLD-28.

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RE: Introducing the new 90-1.20 Yak QB - 6/15/2009 9:23 PM

JCINTEXAS

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"I got a smoking deal a Aeroworks 90-1.20 YAK "......
C'mon Scooter......ya can't just leave us hanging in suspense.
You left out the most important detail on the "smoking deal" you got.
JC

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JC

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RE: Introducing the new 90-1.20 Yak QB - 6/16/2009 12:34 AM

Scooterpilot

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JCINTEXAS

In response to your question, just take 42% off the retail cost of the items listed below and that was my cost.

Smartfly ignition cut off

switches X 2

MDL 28 CC

Pitts sytle muffler

velocity stack

5645 servos x 5

Ignition battery

throttle servo 3152

dave brown spinner

xoar 18x6 black prop

Aero-works yak 1.20

5 MLP aluminum sevro arms

Regards

< Message edited by Scooterpilot -- 6/16/2009 1:15 AM >

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RE: Introducing the new 90-1.20 Yak QB - 6/16/2009 1:08 AM

JCINTEXAS

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Wow....is there another one available?
JC

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RE: Introducing the new 90-1.20 Yak QB - 6/30/2009 9:04 PM

osartorius

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I do not know if any had this problem but it seams that the wing tube came on wrong, outside diameter has too much play 1/16" all arround.

Has someone tell me what outside diameter and length have on the wing tube?

I have it ready to fly, but when I try to put it togeder for balance I found the problem with the wing tube.

I fire up the MLD-28, what an engine, it works great, very powerful, I can wait to put it in on the air.

Here are some pictures of the wing tube and my instalation.

Thank you

Attachments

Click for fullsize	Click for fullsize	Click for fullsize	Click for fullsize
Click for fullsize

< Message edited by osartorius -- 6/30/2009 9:05 PM >

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RE: Introducing the new 90-1.20 Yak QB - 6/30/2009 10:07 PM

Smacka

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quote:

ORIGINAL: Draknkep

Hi Hoverlow

My Yak was as you described , and I called Aero-works about this. It seems that they are using the same drilling template for a number of planes.. Use the holes that are the closest to what is called for in the instructions, and add one hole so that you have all four holes. This what I did, and have had no problems.

And yes, this plane has plenty of throw for 3D

I had the same issue. I resolved it by installing the 50cc hardware (dual control horns), and yes, the hardware fits just fine. Reference the attached photo. it is just another option to consider.

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Click for fullsize

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Have Great Day!
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RE: Introducing the new 90-1.20 Yak QB - 7/2/2009 11:02 PM

yakov

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Just bought the AW Yak 90-120 to replace a Seagull Models Yak which came to an untimely end on a trim flight. I salvaged the Spektrum receiver and the OS Max 1.20 AX from the Seagull Yak and used them on the AW Yak. I decided to stay with the stock OS muffler so I ended up rotating the engine 22 1/2 degrees from the stock position to get the muffler to align with the bottom of the cowl. Only had to put a 3/4" hole in the cowl for the muffler outlet that way and one for the glow plug. Made the installation super clean. I bought HD 9110 servos for the elevator and ailerons and an HD 9150 for the rudder. I upgraded the battery to a 2700 ma 6v NiHD pack. Assembly has been pretty much uneventful other than the elevator servos needed 3/32" spacer blocks installed so they wouldn't butt up against each other. Also the stock throttle rod was 2" too short and the wing tube needed to be fitted so it didn't bind.

Hope to finish it out this weekend and get it ready for flying.

Just a thought here about the quality difference between the Seagull Yak and the AW Yak. Hands down, I would never own a Seagull model again. The quality difference is astounding. AW has got my business on future planes.

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RE: Introducing the new 90-1.20 Yak QB - 7/2/2009 11:24 PM

RC Pile It

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I agree with YAKOV, Seagull Models Sucks! I had an Ultimte(40-60size), and although it was a good looking model, the ailerons didn't fit the wing, and the thing flew like crap! Never again! Aeroworks is a much better product in both form & function! I also replaced my QQ Yak, with the Aeroworks, Oh Man what a differance! Now I just need to replace my 100cc QQ, but it still flys allright-

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RE: Introducing the new 90-1.20 Yak QB - 7/3/2009 12:18 AM

ro347

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Let us know how that motor works out for this plane. Thanks!

quote:

ORIGINAL: osartorius

I do not know if any had this problem but it seams that the wing tube came on wrong, outside diameter has too much play 1/16'' all arround.

Has someone tell me what outside diameter and length have on the wing tube?

I have it ready to fly, but when I try to put it togeder for balance I found the problem with the wing tube.

I fire up the MLD-28, what an engine, it works great, very powerful, I can wait to put it in on the air.

Here are some pictures of the wing tube and my instalation.

Thank you

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RE: Introducing the new 90-1.20 Yak QB - 7/3/2009 12:19 AM

ro347

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Guys,...how much difference is there between an OS 120 ax and say a saito 125. I mean I understand the quick torque.....but does it really make that much of a difference? What about just using a fast servo on throttle and proper prop. Just asking..... I haven't flown 2 stroke in a while.

< Message edited by ro347 -- 7/3/2009 12:20 AM >

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RE: Introducing the new 90-1.20 Yak QB - 7/3/2009 3:17 AM

jamesrxx951

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quote:

ORIGINAL: ro347

Let us know how that motor works out for this plane. Thanks!

quote:

ORIGINAL: osartorius

I do not know if any had this problem but it seams that the wing tube came on wrong, outside diameter has too much play 1/16'' all arround.

Has someone tell me what outside diameter and length have on the wing tube?

I have it ready to fly, but when I try to put it togeder for balance I found the problem with the wing tube.

I fire up the MLD-28, what an engine, it works great, very powerful, I can wait to put it in on the air.

Here are some pictures of the wing tube and my instalation.

Thank you

that mld 28 is quite the power house. you absolutely can't go wrong with this engine. swings a 18/6 prop without a sweat and just sips fuel. i used a 10 oz tank for over a 10min flight. this motor will do excellent in any 10lbs plane.

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RE: Introducing the new 90-1.20 Yak QB - 7/3/2009 3:21 AM

jamesrxx951

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quote:

ORIGINAL: ro347

Guys,...how much difference is there between an OS 120 ax and say a saito 125. I mean I understand the quick torque.....but does it really make that much of a difference? What about just using a fast servo on throttle and proper prop. Just asking..... I haven't flown 2 stroke in a while.

i havent used either engine in my yak used a saito 150 and then a mld 28. the saito 125 will just have enough power to hover with slight pull out according to the review on aeroworks website. i seen an os120 on an extremeflight 68" yak and it was suppost to be around 9lbs and it had very good power. i would be curious on if the saito would have better power with a perry pump. i put one on my saito 150 and it was a night and day difference. the 125 will fly it around nice but i don't think it will have the power for 3d.

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RE: Introducing the new 90-1.20 Yak QB - 7/14/2009 4:37 AM

Ralph White

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Hi, For anyone interested. I have a post on how I repaired the choke rod for my MLD-28 that is installed in my 1.2 Yak-54 which was rebuilt after a wing failure at the following addess (Post # 48): http://www.rcuniverse.com/forum/m_8377120/mpage_2/tm.htm
Ralph White, Neoga, IL

< Message edited by Ralph White -- 7/14/2009 4:39 AM >

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RE: Introducing the new 90-1.20 Yak QB - 7/14/2009 4:58 AM

gonzoman

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Lets see O.S. 120 AX for 3D on this aeroworks yak? how much throttle is needed for hover (approx, wo all use different gear) Would a O.S. 160 FX be better? I get tired looking at every post for my answer, after all there's how many? So I figured I'd ask.

< Message edited by gonzoman -- 7/14/2009 5:00 AM >

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RE: Introducing the new 90-1.20 Yak QB - 7/14/2009 6:01 AM

Ferocious Frankie

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Here's a small table I made a long time ago that I dug up. I believe it's still valid.

This plane is awesome. It can accept a wide range of engines and all seem to power it well. Here are your options:

O.S. 1.20 AX (Good power, can hover, o.k. pull-out)

O.S. 1.60 FX (Great power, can hover, good pull-out)

Saito 1.25 (Adequate power, can hover, o.k. pull-out)

Saito 1.50 (Lots of power, can hover, great pull-out)

Saito 1.80 (Lots of power, can hover well below half throttle, great pull-out) I have this set-up.

Y.S. 1.40 (Lots of power, can hover, great pull-out)

Evolution 26 (Good power, can hover, ok pull-out)

SPE 26 (Lots of power, can hover, great pull-out)

I'm sure there are more engines out there, but these seem to be the ones that people have actually used and have liked the set-ups. Basically, if you want lots of power, either go with the Y.S. 1.40, Saito 1.50, O.S 1.60, Saito 1.80, and SPE 26cc. These engines will give you lots of power. If you go gas, you will need a extra battery and you will use an ignition module, but according to Jimeni, you will have lots of power. For the Evolution, read the article below by Quique and decide.

http://www.somenzini.com/html/aircraft/yak73report.html

Hope this helps in your decision. Whatever you go with, you will have lots of fun with this plane. It's that nice!

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Radio: Futaba 12FG 2.4 GHz

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RE: Introducing the new 90-1.20 Yak QB - 7/14/2009 4:41 PM

blue77

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I am in the process of setting up an AW 120 Yak QB to use as a weekend/sport flyer......I have a Saito 125 and a set of Spektrum 821 digital servos....I do not want to put any great amount of money into this, are these servos going to be OK? Thanks WC

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