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Extreme Flight 87" Yak 54 - Build & Fly

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Extreme Flight 87" Yak 54 - Build & Fly

Old 04-20-2005, 12:25 PM
  #4351  
bodywerks
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: CHassan


ORIGINAL: bodyworks


ORIGINAL: matus777


ORIGINAL: bodyworks

Yeah, but it is brand new and hasn't even been in the air yet.


Are you talking powered?.....if you are not happy you can send it back....you have a 3 yr warranty. I have a plane with 8411's and 85 hrs of operating time on it and the servos (26 plus pounds) ...and they still center like new....now that does not mean they can't fail next time out.

Yes, while powered. I can move the trailing edge of my rudder 1/4" in each direction before feeling any real resistance. It's only my rudder, so I will not worry about it unless I have performance or flutter issues. At this time, I am not unhappy with it, just a little shocked to see so much play in a $115 servo. I do not have the case top mod for it, either, but I don't see that fixing it...
I just installed my 8611 on my rudder and I can jiggle my rudder, but I can't move it a 1/4". I did notice when I used a 4.8 battery with a low charge I could deflect the servo with little resistance. If you have 1/4" of play I'd say it's not the servo causing it. None of my 8611 have enough lash to allow 1/4" of movement.

Now when I delfect my rudder full left or right, I can push it back the opposite direction a ways. Looking into this problem I noticed my servo mount, servo arm, and the rubber gromets for the servo all bend flex or squish to allow the rudder to blow back. This is in no part due to the servo, but due to to flimsy of a mount, cheap arms and the inherent nature of the rubber gromets. [&o]
The 1/4" I am getting is from the very trailing edge of the rudder. When I do it and look at the servo arm, I can see it move as well, but only about 1/64". I was also using a freshly charged 4800 lion pack with 6 volts out of the regulator.
Old 04-20-2005, 12:46 PM
  #4352  
romanrc
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Thanks.

I am going to send a mail to Chris to ask him if it command to the store ABC Hobbies of Laredo, Texas.
Old 04-20-2005, 05:29 PM
  #4353  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

I just recieved my 87" Yak today, it sure is purty! Suppose to get my DA50 this friday, I already have my 8611's for it. I hope to have it flying the weekend after the Mempho **** 3D fly-in at the end of this month.
Planecrazy dude: Man i cant think of another servo id rather be "stuck" with than the sweet 8611
Old 04-20-2005, 07:13 PM
  #4354  
basmntdweller
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Constrictor, how did you just now get yours today? E-bay deal or something? You will like it, maybe more than your 65".
Later,,,Matt
Old 04-20-2005, 07:42 PM
  #4355  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: basmntdweller

Constrictor, how did you just now get yours today? E-bay deal or something? You will like it, maybe more than your 65".
Later,,,Matt

I found one for sale on another Rc site. Have you flown yours yet? I am sure i will like the 87" Yak but absolutely nothing beats the OMP 65" yak. Did you ever get yours feeling confortable?

Steve
Old 04-20-2005, 10:12 PM
  #4356  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

nice!
Old 04-20-2005, 11:19 PM
  #4357  
DrScoles
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Got in three more flights tonight.... this thing is fun...... I went to 80% expo on the 3d mode, and that helped tremendously....was too touchy before that.


Has anyone made a Yak for G3??? Would be cool to have one with right colors and similar flying characteristics...

Thanks, Mike
Old 04-21-2005, 06:05 AM
  #4358  
going vert
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

ORIGINAL: ckoerner

Drew,
What's with you and firewalls? This is the second airplane now. You must fly them too hard.
I am just waiting for my DA50 and my 8611's to finish mine. When I get it done I will have to meet you and Wayne one weekend at Larry's.
Later,
Craig
Ya really.... Where have you been? You need to get down to Larry's more often.
Old 04-21-2005, 06:56 AM
  #4359  
Absolut Yak
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Constrictor,

I picked up an OMP 65" Yak from RCU and like it a lot. It really is a good plane. Makes me wonder how much the design of the real Yak influences the characteristics of the models vs. the kit/arf designer. I still have a lot to learn about 3D and flying in general, but I get pretty aggressive with this plane. Need to get the right servos in it to replace the tired servos the builder originally installed. Have an OS 1.8 with the Jerry Smith pipe and that's got great pull out of hover. Done in the exact same scheme as the EF Yaks. I also have the 80" OMP Edge with the MVVS 2.15 gasser and pipe on it. Nice flier. Still, I bought the 65" to teach myself the advanced stuff the EF Yak is capable of doing without the fear of losing the investment in the EF. Come to think of it, I have three Shocky Yak 54's in the EF scheme as well. I guess its just a Yak fixation.

Doug

Old 04-21-2005, 07:47 AM
  #4360  
Bosshossv8
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

ORIGINAL: djccrn

Come to think of it, I have three Shocky Yak 54's in the EF scheme as well. I guess its just a Yak fixation.

Doug

Yup, a few of us have it bad. First RC model I became obsessed with.

DEpending on skill level, it is either a good thing or a bad thing. In my case is is the latter.

11 Yaks and counting.
Old 04-21-2005, 08:05 AM
  #4361  
ckoerner
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


Ya really.... Where have you been? You need to get down to Larry's more often.
I never know when you guys are going to be there. I will bring the Yak there for the first flight. One problem I have to fix. It doesn't fit in my truck with the figerglass top on.
Old 04-21-2005, 08:15 AM
  #4362  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

That reminds me, anyone know if the Yak will fit in a Dodge Stratus? [] Before I had the rudder and cowl on I thought it would, now I'm not even sure if I can get it out of the basement[:-]
Old 04-21-2005, 08:44 AM
  #4363  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

After 10 flights the bottom of my firewall started to come apart. I fixed it the same way Drew did his. I used 3/16 aircraft ply as a doubler. Seems solid now.
I would take a good look at this area to be sure it's ok.

Dave
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Old 04-21-2005, 01:00 PM
  #4364  
Vic3D
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Anybody know when the Yaks are going to be back in stock? I emailed Chris almost two weeks ago regarding a few issues and he hasn't replied yet[]
Old 04-21-2005, 01:41 PM
  #4365  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

anyone know dubro stock number for the tail wheel??/ The carbon piece is still on, everything else is off in the field somewhere.... not gonna go look for it......

Thanks, Mike
Old 04-21-2005, 02:53 PM
  #4366  
XpastywhiteboyX
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

wow is this thread ever gunna die these things look quite tempting for a small plane. I flew it and was very impressed. altho the throttle got stuck at 1/2 throttle on a da 50 so it took 38 minutes for her to die.
Old 04-21-2005, 04:43 PM
  #4367  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

THe tail wheel isn't Dubro i don't think. Surely you dould get similiar partd though.
Old 04-21-2005, 05:09 PM
  #4368  
JWilliams
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


[/quote]


I found one for sale on another Rc site. Have you flown yours yet? I am sure i will like the 87" Yak but absolutely nothing beats the OMP 65" yak.

Steve
[/quote]
What, you have got to be kidding me. The EF Yak will be your new favorite, the OMP 65" yak is good but it is not in the same league.
You knew I would have to chime in on this one Steve.
Jeff
Old 04-21-2005, 07:09 PM
  #4369  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: going vert

Here is the first half of my firewall upgrade. I glued on a firewall doubler just on the lower half - 3/32 aircraft grade ply. Then I'm going to use 1/2" basswood tristock and some CF on the inside.




Exactly what is the technique for applying the CF. Are you using CF that is already laminated or a CF cloth? If using the cloth what do you use to laminate with?
Old 04-21-2005, 07:53 PM
  #4370  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

At 54 +- gallons of fuel through my OMP Yak, i am at one with my bird



ORIGINAL: JWilliams


I found one for sale on another Rc site. Have you flown yours yet? I am sure i will like the 87" Yak but absolutely nothing beats the OMP 65" yak.

Steve
[/quote]
What, you have got to be kidding me. The EF Yak will be your new favorite, the OMP 65" yak is good but it is not in the same league.
You knew I would have to chime in on this one Steve.
Jeff
[/quote]
Old 04-21-2005, 09:08 PM
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

anyone know dubro stock number for the tail wheel??/ The carbon piece is still on, everything else is off in the field somewhere.... not gonna go look for it......

Thanks, Mike
I was afraid of that. I'm not getting that "warm and fuzzy feeling" about my tailwheel... pretty sure it will fall of pretty quickly. I filed the flat spots, used LocTite, etc., but no matter how tight I draw the set screw down, it keeps breaking loose. It's tight now, but probably won't last more than a flight or two.

Just finished the cowl, canopy (w/hatch-latch), and wheel pants... whoohooo! Now all I have left is to drill and cut the spinner and finish up the radio/bat gear. Then it's finally time to balance and run in the motor. Probably could have it ready for this weekend, but no point in it... SNOW forecasted this weekend here!!!! [:@][:'(][:@][]

Tom
Old 04-21-2005, 09:43 PM
  #4372  
Mike Parsons
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

I maidened my Yak today. Of course in my normal fashion it is Electric. Nothing like maidening your plane at a public event in front of a pre show croud of 100+. It went off without a hitch. AUW came to 15 pounds. This is with 12 oz of lead in the nose to get it to balance. It flew very nose heavy, so I can start removing lead sticks one at a time until it feels right. 1/4 throttle take off, 1/2 throttle uplines at a good clip. The first few flights have to be conservative to "seat the batterys in". Performance however does not leave me wanting.

Power setup:
Twin Cyclon 160 outrunners ganged on a single shaft
2- Jeti 77a Opto controllers
Dual redundant UBEC system
16s2p 4000mah Thunderpower Pro-lites (8s2p per motor).
We should get some video this weekend.

-Mike
"Why?....because I can and it had to be done"
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Old 04-21-2005, 09:58 PM
  #4373  
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Atomic, man.


I have so many questions, but not here.

[email protected]%[email protected]%$Site , man.
Old 04-21-2005, 10:11 PM
  #4374  
Mike Parsons
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Thanks Boss . I will be starting a thread on the conversion after SEFF. Alot of details will be there, but feel free to PM me with any questions.

-Mike
Old 04-21-2005, 10:49 PM
  #4375  
DrScoles
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Atlantaflyer...... too cool!!!! I didnt realize you could gang the motors like that..... timing isnt an issue???
It seems like if they were off even a degree, it would screw things up.... very cool stuff!


Mike

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