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Extreme Flight 88" Yak - Build and Fly

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Old 02-23-2007, 10:58 PM
  #226
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Default RE: Extreme Flight 88" Yak - Build and Fly

I too am thoroughly pleased with this EF YAK! I haven't built many ARF's, but this one blows all the others away in terms of quality engineering, fit and finish! I've had a few of my flying buddys drop by since the YAK'S arrival in the BBT around two this afternoon and they just were floored over the size of this 50cc airplane. The hardware is excellent and the wing, stab and canopy covers are a huge bonus! Good job Chris, I wish you great success at EF!
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Old 02-23-2007, 11:20 PM
  #227
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Default RE: Extreme Flight 88" Yak - Build and Fly

Guys, I can tell you.... when you see this plane you are going to be amazed at the size of it. I always thought the 85" was big when it come in, but this thing drawfs it. I'm afraid that it won't fit in my truck either so I'll have to come up with something to make it work with the tailgate down as well. I drive a short bed 1500 Dodge ram.
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Old 02-23-2007, 11:25 PM
  #228
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Default RE: Extreme Flight 88" Yak - Build and Fly

Maudib I totally agree about the video thing.
I am just glad that Chris was up front with us and let us know that there were different designs other than the Yak coming.
If I had not been told that an Extra was coming I would have been all over this Yak like white on rice. The down side to that is that I would have been really disappointed with EF if I had of purchased a Yak and then two months or so later the Extra would have come along. Dont get me wrong I just am not a Yak fan as stupid as that may sound.
With Chris letting me know that a Extra is in the works just let me keep my money in hand til they get here. I still have a lot of great flying planes that I will be happy to fly until it gets here, that includes the 45" Extra.

On another note I have so much faith in Chris's designs and his planes that I would pay him in full right now to ensure that I get one of the first Extras. I think that I have become obsessed with the Extra and all I can imagine in my mind is a blown up version of the 45". I truely hope that is what it is do to the fact that this little plane absolutely rips.
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Old 02-23-2007, 11:52 PM
  #229
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Default RE: Extreme Flight 88" Yak - Build and Fly

Hey guys,

To show the comparison of just how big the fuse is on this plane.

First pick is next to my Aviation Models 33% Yak. The 33% still is about 3 inches longer in the fuse but that is the only place it is larger.

Second pic, is the hatch for the 33% sitting inside the EF fuse, and this plane is light enough to be flown with a DA-50??

Cool [8D]
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Old 02-23-2007, 11:54 PM
  #230
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Default RE: Extreme Flight 88" Yak - Build and Fly

BTW I got the first 33% AM to fit in my 6 foot truck bed so I feel certain that this one will!! {Edit-With the tail gate down of course the wheels go inbetween the tailgate and the truck bed. I strap from side to side through the landing gear and keep the tail forward. I typically only do 50 mph mak to the field so if you want interstate you should take a long look at going faster}
Richard
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Old 02-24-2007, 12:11 AM
  #231
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Default RE: Extreme Flight 88" Yak - Build and Fly

Fatty pics!!!
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Old 02-24-2007, 12:23 AM
  #232
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Default RE: Extreme Flight 88" Yak - Build and Fly

The cowl for this 50CC is actually larger than the 33% Aviation Models cowl. Yep, larger than life!
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Old 02-24-2007, 12:48 AM
  #233
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Default RE: Extreme Flight 88" Yak - Build and Fly


Quote:
ORIGINAL: MustangAce

Fatty pics!!!
Hey mustang, We're planning a maiden pretty soon at the scottsville strip. You interested in coming up and getting pics of the red and white with the yellow and black? It would be great to show both side by side.
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Old 02-24-2007, 12:52 AM
  #234
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Default RE: Extreme Flight 88" Yak - Build and Fly

Maybe real soon I can come up there to watch your maiden. I'm a sloooowwww builder

One day I will come up to do some pics and fly for sure.
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Old 02-24-2007, 01:40 AM
  #235
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Default RE: Extreme Flight 88" Yak - Build and Fly

rdb127


let see a wing comparison picture thanks in advance!!!!!!
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Old 02-24-2007, 06:52 AM
  #236
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Default RE: Extreme Flight 88" Yak - Build and Fly

And the good news is that they don't need to lift 24 lbs like their bigger counterpart.




Richard
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Old 02-24-2007, 08:13 AM
  #237
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Default RE: Extreme Flight 88" Yak - Build and Fly

Mustang Ace asked me about extensions so I'll reiterate here again:

2 x 36" for the elevators

2 x 12" for the aileorns OR 4 x 6" if you want to leave 2 6" in the receiver

Throttle in stock location is 12" from the receiver... so MOST throttle servos will need a 6" extension... If you move the trottle servo back (I am) then you may not need an extension.

Rudder needs none.


You need an SWB 4" offset arm for he pull-pull and 4 x 1.5" servo arms for the other surfaces.

Balllinks are supplied, but they use a 3mm bolt... if you do NOT want to drill out your servo arms (pre-drilled and tapped for 4/40) then you will want to have 6 x Dubro or Rocket City HR balllinks for the servo arm ends. You cannot just use a 4.40 screw into the supplied balllink because the hole is too large.

Either drill the arms or use HD balllinks there. You will need to use the supplied balllinks on the horms as the phenolics have been pre-drilled for the 3mm bolt.

You need axles and 4" tires (I used 3.5")

There are 4 titanium pushrods... 2 are slghtlu longer than the other and are for the elevators

You'll need some tygon fuel tubing and a fuel dot/filler for the supplied fuel tank. If you want to do a 2 line system you'll need a "T fitting"... if you want to do a 3 line, you'll need an extra clunk weight

Other than you radio/servos/battery system... you don't need any other hardware.
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Old 02-24-2007, 09:53 AM
  #238
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Default RE: Extreme Flight 88" Yak - Build and Fly


Quote:
ORIGINAL: rdb127

And the good news is that they don't need to lift 24 lbs like their bigger counterpart.




Richard
Rich, what are you hauling in the TOC Yak, lead? Mine will weight 20 1/4 pounds when finished.
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Old 02-24-2007, 09:53 AM
  #239
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Default RE: Extreme Flight 88" Yak - Build and Fly

guess its too late to request a video idea from chris, hes already out i imagine, i would love to see someone do a stall test ya know, cut it to idle and just give enough ele to hold the nose level until she falls out....that and at least 1 or 2 landings would be nice, along with the usual 3d and imac stuff
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Old 02-24-2007, 10:31 AM
  #240
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Default RE: Extreme Flight 88" Yak - Build and Fly

Is there an Aluminum header with the proper drop available from Macs??

It would be lighter, eh?
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Old 02-24-2007, 10:35 AM
  #241
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Default RE: Extreme Flight 88" Yak - Build and Fly

How much of a gap does everyone leave on the control surfaces ?
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Old 02-24-2007, 10:36 AM
  #242
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Default RE: Extreme Flight 88" Yak - Build and Fly

I don't think MACS make any geader for the DA50...
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Old 02-24-2007, 11:01 AM
  #243
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Default RE: Extreme Flight 88" Yak - Build and Fly

Mine were pretty tight... about 1/32" this allowed pretty close to maximum throw... (and there' NO way I'll use 80 degrees!)

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Old 02-24-2007, 11:04 AM
  #244
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Default RE: Extreme Flight 88" Yak - Build and Fly

Don't know WHY I am so slow today... moseying along I suppose...

I have the cowl mounted now...

1) I use clear, stiff plastic strips taped to the fuse that overlay the mounting tabs and marka dot on the strip where the center is

2) I drill each hole ONE at a time and put a screw in it... recheck cowl alignment and move on to the next... I usually do the top two first... then the bottom two... this allows for maximum adjustment as you go along.


The third pic shows the final prop clearance I have with the suggested 3/4" overlap of Former F1.
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Old 02-24-2007, 11:05 AM
  #245
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Default RE: Extreme Flight 88" Yak - Build and Fly

I happened to have a 4.5" CF spinner handy... and after looking at it on there... that's what I am going to use...

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Old 02-24-2007, 11:06 AM
  #246
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Default RE: Extreme Flight 88" Yak - Build and Fly


Quote:
ORIGINAL: Maudib

Mine were pretty tight... about 1/32" this allowed pretty close to maximum throw... (and there' NO way I'll use 80 degrees!)

Ill have to open up the holes a bit to get them that close![8D]
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Old 02-24-2007, 11:21 AM
  #247
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Default RE: Extreme Flight 88" Yak - Build and Fly

I press the knuckles into each side until the metal pin is dead nuts over the apex of the bevel... then when the two go together... they'll neet right up...
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Old 02-24-2007, 11:37 AM
  #248
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Default RE: Extreme Flight 88" Yak - Build and Fly

Was looking at the exisitng choke arm on the Brillelli, how did you remove it? Dremel?
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Old 02-24-2007, 11:45 AM
  #249
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Default RE: Extreme Flight 88" Yak - Build and Fly

I still can't get over how big this thing is.

Mike
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Old 02-24-2007, 11:46 AM
  #250
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Default RE: Extreme Flight 88" Yak - Build and Fly


Quote:
ORIGINAL: Yak Man

Was looking at the exisitng choke arm on the Brillelli, how did you remove it? Dremel?
I got a vise grip and snapped off the large end, then used the dremel for the piece left over...
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