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Extreme Flight 87" Yak 54 - Build & Fly

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Extreme Flight 87" Yak 54 - Build & Fly

Old 03-20-2005, 08:15 PM
  #3426  
cadconversions
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

I've seen others that have used the HS-81 w/o problems and I have one that I plan on putting in a smaller gasser but haven't decided on the yak servo.
Old 03-20-2005, 08:37 PM
  #3427  
matus777
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Today in balmy Illinois I had the pleasure of seeing Wayne fly his Yak. Impressive and awesome are two words to conservatively describe the action. It just looks right in the air and is married to the DA50. Anyone who get this plane in the air is going to have a terrific experience and it sure does "fly big" to the eye of an observer....very happy I had the chance to see the Yak up close...Thanks Guys!
Old 03-20-2005, 08:40 PM
  #3428  
wgeffon
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

ORIGINAL: matus777

Thanks Guys!

Anytime Lou.
We look forward to seeing you there all summer.

I was just about to hand the TX over to Lou but on takeoff the plane nosed over and broke the prop.
It was kinda like when a wheel locks up.. Both wheels were free spinning after we checked them.
Need a new prop now..

Lou had to watch us fly boring IMAC crap the rest of the day..
Old 03-20-2005, 09:28 PM
  #3429  
going vert
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

The web site it updated w/ links to a new video and pictures from the Atlanta trip. The pictures are from Atlantaeflyer and Wayne.

http://extremeflightyak.shutupandfly.com/

Old 03-20-2005, 09:28 PM
  #3430  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

I had to get this DA fuel dot! Looks too cool Although dot doesn't really do it justice... I need one for the smoke too, might use a traditional sized one for that....



I switched to bigger bolts for the cowl mounting.... the stock ones seemed a little small too me.

Mike
Old 03-20-2005, 09:36 PM
  #3431  
coche
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

ummmm..... same thing happened to my yak! it nosed over after a perfect 3 point landing! the plane land, and when I was bringing the plane back to me the tail came up and my prop hit the ground!

I did the same! check for a tight wheel! and nothing wrong with it!

I also need a new prop! I think I am not going to use the mejslik! I am going to get a 24 x 8 Menz!
Old 03-20-2005, 09:37 PM
  #3432  
wgeffon
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: coche

I am going to get a 24 x 8 Menz!

I hope I can find one.
I think DA is out of them.

If I cant find one, I'll probably just get a NX from Airwild.
Old 03-20-2005, 09:44 PM
  #3433  
coche
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

what about a 3W prop???

I think that ohio models also sells Menz props!

http://ohiomodelplanes.com/ordermenz/
Old 03-20-2005, 09:46 PM
  #3434  
wgeffon
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Yeah.
There are a few people I am going to check with about the Menz-S 24x8

The NX is a good replacement is what I was trying to say.
Old 03-20-2005, 09:55 PM
  #3435  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Maiden Flight in Oklahoma!

All that needs to be said is WOW! Everything that you have read or heard is true.

"The EF 87" YAK is the ONE!"

DA 50, Std. muffler
Mejzlik 23 x 8
JR 8611 all surfaces, JR 8101 throttle
JR 9303 TX
2150 NiMh - 2 RX , 1 Ign 5 volt NO regs

Truly Totally Unlimited in all aspects of flight and lands like a feather.

Thanks Chris, the pleasure is all mine.

Only advice I can give is GET-ER-DUN!

P.S. Use longer bolts w/ a short piece of neoprene tubing & ball point pen springs to help push bolts out when removing canopy. 1" bolts for rear, & 1 1/2" on front.

I am one Happy Camper and a Extreme Flight Believer,
Doug Schrag
Old 03-20-2005, 09:56 PM
  #3436  
jrjohn
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

I had a hs81 mg fail last year, it was the throttle servo on my UCD 3D. Just got the jitters and quite

john
Old 03-20-2005, 10:01 PM
  #3437  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

The big dogs were out in Manteno today.....Hey Wayne, You were flying that Yak Like a kite today.
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Old 03-20-2005, 10:08 PM
  #3438  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

It is a Kite!
Old 03-20-2005, 10:11 PM
  #3439  
3dking
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

You left Julian with his mouth open. I had to listen to his 55 minute testimonial on your 3d flying all the way home today. My ears were bleeding. Yak, Yak Yak.....
Old 03-21-2005, 02:08 AM
  #3440  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: cadconversions

I've seen others that have used the HS-81 w/o problems and I have one that I plan on putting in a smaller gasser but haven't decided on the yak servo.
I will be running the Hitec 5245mg for my throttle. Digital, metal gear, and 70 oz. of torque. If it fails I have sn=mart-fly onboard as well...
Old 03-21-2005, 02:20 AM
  #3441  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

A WORD OF ADVICE!!!
I just started building my Yak this weekend So far a pretty pleasureable build, but I did kind of do something wrong and thought I might point it out.
When assembling the rudder control horn, you will notice that the slots in the rudder are wider to allow you to slide the control horns through. Well, the instructions don't say to slide the horns to the for or aft end of the slot, so I used a little common sense and figured they should be forward, as this puts the ball links directly over the hinge line. Upon installing the rudder to the fuse, after the fact, I found that I have lost a lot of travel as a result. The horns slap the fuse at about 45 degrees of throw! I know that's decent travel, but once I get the cables rigged and ball links on, I will probably not be able to get 40 degrees.
Moral of the story is to slide the horns to theAFT end of the slots and you should be able to get 45+ degrees no problem.
Old 03-21-2005, 03:04 AM
  #3442  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: bodyworks

A WORD OF ADVICE!!!
I just started building my Yak this weekend So far a pretty pleasureable build, but I did kind of do something wrong and thought I might point it out.
When assembling the rudder control horn, you will notice that the slots in the rudder are wider to allow you to slide the control horns through. Well, the instructions don't say to slide the horns to the for or aft end of the slot, so I used a little common sense and figured they should be forward, as this puts the ball links directly over the hinge line. Upon installing the rudder to the fuse, after the fact, I found that I have lost a lot of travel as a result. The horns slap the fuse at about 45 degrees of throw! I know that's decent travel, but once I get the cables rigged and ball links on, I will probably not be able to get 40 degrees.
Moral of the story is to slide the horns to theAFT end of the slots and you should be able to get 45+ degrees no problem.

Thanks for the heads up for us who have not finished(or really started) the build. That is unfortunate that happened[]
Old 03-21-2005, 03:48 AM
  #3443  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

While the instructions may not say "to slide the horns to the for or aft end of the slot", on Pg. 17, item 26, clearly advises to "measure so that the holes in the ends of the rudder horn are equidistant from the hinge line and in-line with the hinge line."[/i]
Old 03-21-2005, 04:05 AM
  #3444  
flat spin
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

I actually don't think it is going tpo make much difference and the truth is you don't need more than 40 degrees anyway. We were recovering from Knife edge loops this weekend with half that throw and no throtle. If you have to much you will start ot experience coupling with no added benfit.
Old 03-21-2005, 07:45 AM
  #3445  
Absolut Yak
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

As a gasser neophyte, I had the gears fail on an HS-81MG on the throttle on my OMP GS540P with the MVVS 2.15 gasser after 25 flights. Switched to a HS-225MG and still good after 35 flights. I also fixed the linkage not to flex like it had prior. My inexperience contributed to the failure, but a stronger gear wouldn't have failed as easily. I am definitely going with full size metal gear digital servo for throttle this time. Any recommendations that aren't just blatant overkill?

Doug
Old 03-21-2005, 07:45 AM
  #3446  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

My tail draggers tend to want to nose over. Holding elevator to keep the tail stuck down is what I have to do, or the result is a broken prop.
ORIGINAL: coche

ummmm..... same thing happened to my yak! it nosed over after a perfect 3 point landing! the plane land, and when I was bringing the plane back to me the tail came up and my prop hit the ground!

I did the same! check for a tight wheel! and nothing wrong with it!

I also need a new prop! I think I am not going to use the mejslik! I am going to get a 24 x 8 Menz!
Old 03-21-2005, 07:50 AM
  #3447  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Doug, the hitec 5245MG is what I will be using on the throttle. Digital servos come back to the same spot every time, for a consistent idle speed.

Dave
ORIGINAL: djccrn

As a gasser neophyte, I had the gears fail on an HS-81MG on the throttle on my OMP GS540P with the MVVS 2.15 gasser after 25 flights. Switched to a HS-225MG and still good after 35 flights. I also fixed the linkage not to flex like it had prior. My inexperience contributed to the failure, but a stronger gear wouldn't have failed as easily. I am definitely going with full size metal gear digital servo for throttle this time. Any recommendations that aren't just blatant overkill?

Doug
Old 03-21-2005, 08:41 AM
  #3448  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Even with just 40 degrees of throw, it will be plenty.
Jeff W.
Old 03-21-2005, 08:46 AM
  #3449  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

ORIGINAL: meatman

does anyone have a opinion on using a mini servo for the throttle... I have been told be a experienced flyer the their will be to much vibration... eg a hitec hs81mg servo. any opinions on this.
I'm using a Hitec 5245mg Digital Mini on my 2.6 Yak and have had no problems.

Either the HS225mg or the HS5245mg will work just fine.

Enjoy your Yak.....
Old 03-21-2005, 09:01 AM
  #3450  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Wayne,
Did you experience any changes in the running of the DA-50 with the Pressure fitting modification installed? Does it Idle better, or have better midrange? I got my modification kit from DA on Friday and am planning to install it this week.

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