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Extreme Flight 87" Yak 54 - Build & Fly

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Old 03-15-2005, 09:13 PM
  #3251  
bodywerks
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: jrjohn


ORIGINAL: Hammbone

If I understand your question correctly, the slants go forward so that the holes are even with the hinge line.

Jim
I'm not so sure of that, The SWB horn puts the holes clearly behind the hinge line. I'd research that a little more

John
HUH!!!??? the SWB horn doesn't go on the rudder, it goes on the servo! If you are talking about the fact that the SWB clevis holes are CLEARLY AFT of the pivot point (where it bolts to the servo), that has nothing to do with the position of the control horn at the rudder! The SWB arm has that geometry due to the fact that the pull-pull cable wires cross each other in the fuselage, which affects the geometry. NO QUESTION ABOUT IT... the control horns on the rudder point FORWARD!
Old 03-15-2005, 09:23 PM
  #3252  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

The manual even says that the holes in the rudder horn should be even with the rudder hinge line.

Jim
Old 03-15-2005, 09:27 PM
  #3253  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

.
Old 03-15-2005, 09:39 PM
  #3254  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Sorry about the confusion, I was asking about the double truss servo arms.

If my understanding is correct, here is how it should look (Sorry for the crude drawing)

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Old 03-15-2005, 09:54 PM
  #3255  
Hammbone
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

LOL,
I've seen this confusion before on RCU.
The thing that goes on the servo is called an arm.
The thing that goes on a control surface is called a horn.

Jim
Old 03-15-2005, 09:54 PM
  #3256  
jrjohn
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

ORIGINAL: TailTouch

Sorry about the confusion, I was asking about the double truss servo arms.

If my understanding is correct, here is how it should look (Sorry for the crude drawing)

Huh, ( I read between the lines and knew you wern't talking about the rudder horns)

I'll say it again, I'm not sure that your assumption is correct, It may go the opposite way of your drawing. The drawing is a little off, It shows the servo spline and the holes at the end of the arm to be in a line with said arm if that was the case it wouldn't matter which way you put it. However they are not in line. i'm using the SWB servo arms, and the holes are clearly behind the servo spline. I'm not 100% sure which way it goes cause I'm not using it,( personally I think it's going to put a lot of stress on the servo bearings because of the high offset) I'd ask a few more people before cutting your pull pull wires. I'm assuming the arrow is pointing tword the rudder????

John
Old 03-15-2005, 10:03 PM
  #3257  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: jrjohn

I'm assuming the arrow is pointing tword the rudder????

John
??????????????? he typed the word " NOSE" right there, we all know the rudder isn't at the nose
Old 03-15-2005, 10:11 PM
  #3258  
jrjohn
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: BBriBro


ORIGINAL: jrjohn

I'm assuming the arrow is pointing tword the rudder????

John
??????????????? he typed the word " NOSE" right there, we all know the rudder isn't at the nose
didn't even see that little word, I didn't enlarge the picture, who would have thought there would be a secret code word imbeded in the pic. Now that I know what a nose and a $ss of the plane is, I'd say you have it correct.

Horns, noses, arms, SWB and BS Look what you started man!
Old 03-15-2005, 10:59 PM
  #3259  
ten pillows
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Anyone have any recommendations about what smoke setup I should use for this plane?
Old 03-15-2005, 11:12 PM
  #3260  
Hammbone
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

I like the Bennett smoke pump. It works off of crankcase pressure so you don't need an extra battery. This might save a little weight.
It has an on/off valve which works very well and gives you a quicker response to on/off commands.

I don't like how electric pumps take a several seconds to come on and then linger and slowly fade out after turning them off. There's always a small chance of an electric pump causing interference too.

The Bennett pump also produces a lot of smoke.

You'll get a lot of different opinions on which smoke system to use, but that's my opinion.


Jim
Old 03-15-2005, 11:19 PM
  #3261  
lex2bits
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

This is kinda cool.

[link]http://www.epanelbuilder.com/index.htm[/link]

Ray
Old 03-15-2005, 11:36 PM
  #3262  
lex2bits
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Maudib,

Heheh..... here's your next assignment: Make the 68" or the 87" do this!

[link]http://modellvideos.de/videos/KnuffelVerstellprop-die-zwote.wmv[/link]

Ray
Old 03-16-2005, 12:56 AM
  #3263  
wgeffon
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Pull Pull explanation from SWB.
(Yak uses example B)

http://www.swbmfg.com/rudex.html
Old 03-16-2005, 01:31 AM
  #3264  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Here are a few pics of things I haven't seen in this thread yet..<g>

I took a carbon plate and made a bracket, then bent a wire to make the choke lever.... Second pic is the fuel and smoke tank. I gotta give "wapilot" credit for the idea of mounting the tank in the pipe tunnel, great idea! The smoke pump will rest right in front of the main tank...




I used two 16 oz tanks... put the top/fuel tank just far enough so I can get my paws in to tighten the wing bolts... smoke tank in tunnel could have been right on CG, but I would have had to get tricky..this was tricky enough



That tunnel also makes an excellent place to hide wires!

Mike
Old 03-16-2005, 03:13 AM
  #3265  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

I knew I should have put a patent on that idea.... ! that would be 10 bucks This Yak has so much space in that tunnel area I had to use it since I'm not using a tuned pipe.
Old 03-16-2005, 08:26 AM
  #3266  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

nice choke job!

I was talking to a buddy of mine that says he solders a small arm onto the choke lever so he can pull it up and down instead of foreword and back, that way you can pull and push from the bottom. I'll probably try this as soon as my motor gets here.

FWIW (for what it's worth)

John
Old 03-16-2005, 09:05 AM
  #3267  
matus777
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

"This Yak has so much space in that tunnel area I had to use it since I'm not using a tuned pipe."


That's where i plan to keep a clean pair of underware to be used after trying my first rolling harrier up high with this YAK!
Old 03-16-2005, 10:10 AM
  #3268  
ten pillows
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Charles, what smoke system are you using?

ten pillows
Old 03-16-2005, 10:41 AM
  #3269  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

ten pillows, where in washington are you?? Be fun to get together this summer and compare notes on these things...and fly a little too I got the slimline pro pump... I couldn't pass up shiny blue anodizing and an internal batt.....

Mike
Old 03-16-2005, 10:52 AM
  #3270  
jrjohn
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Just recieved my DA50. Cute little thing. It appears my carb is mounted different than others I have seen in the YAK I'm assuming I just have to turn it around? As it is, in the inverted position the throtle world be on the left side. Anything I need to know when flipping this thing?

John
Old 03-16-2005, 11:03 AM
  #3271  
jrjohn
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

When flipping the carb, do you flip the reed block too?

John
Old 03-16-2005, 11:09 AM
  #3272  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

John, Mine was same way, I thought I was crazy for a while<g> just undo the two red cap head bolts and rotate whole assembly... Then, everything will line up... I was half way through a new bracket for the throttle servo!

Mike
Old 03-16-2005, 11:19 AM
  #3273  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: jrjohn

Just recieved my DA50. Cute little thing. It appears my carb is mounted different than others I have seen in the YAK I'm assuming I just have to turn it around? As it is, in the inverted position the throtle world be on the left side. Anything I need to know when flipping this thing?John
It does not matter if you rotate the reed block or not when flipping the carb.
If you do remove the reed block, make sure the reed petals are in place!
Also use a dap of medium strength blue threadlocker on the ends of the mounting ( red ) bolts.
Old 03-16-2005, 11:29 AM
  #3274  
jrjohn
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Mike, I just called Da, they say to flip the carb, but not the block. They say if you flip the block it may not idel properly. I wonder if anybody has any experience with this.??

Did you loctite the bolts in? wow you can't tighten them much without changing the shape of the reedblock.

Da says not to use Loctite on the bolts cause they are alluminum and it may gall the threads in the engine block. I really dont' think blue Loctite will. Any opinions?

John
Old 03-16-2005, 11:44 AM
  #3275  
Maudib
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

jrjohn,

I'd do just as DA suggests and not use LocTite... when you think about it... they all come stock with none and there hasn't been a noticable problem with it.


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