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Extreme Flight 88" Yak - Build and Fly

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Extreme Flight 88" Yak - Build and Fly

Old 04-16-2007, 10:04 PM
  #1876  
cwhite
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Default RE: Extreme Flight 88" Yak - Build and Fly

Thanks for the pointers guys. I'll go ahead and set it back to MFG settings and see what happens. I did take the cowl off this evening and cut the bottom out of the pan. I notice a good size crack in the corner of the pan. It is very weak there. I also cut out the new BB 3 1/8" fiberglass spinner hoping it will add needed weight to the nose. I am impressed with this spinner. Very light and looks nice. Cant beat it for $35. Do you think I'm only too lean on top? How do you know you are too lean on bottom?
THANKS!
Old 04-16-2007, 10:11 PM
  #1877  
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Default RE: Extreme Flight 88" Yak - Build and Fly

How do you know you are too lean on bottom?
the motor will sag or hesitate when you give it the juice
Old 04-16-2007, 10:15 PM
  #1878  
Maudib
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Default RE: Extreme Flight 88" Yak - Build and Fly

If it's too lean, it won't transition but quickly die when you goose to 3/4 throttle...

You basically keep leaning the low needle until the transition quits being smooth and fast... when you get to the point that it'll slightly hesitate (like missing a beat) then go... that's the titch too lean setting and you need to back off to last smooth transition setting...

Then reset your high end...
Old 04-16-2007, 10:39 PM
  #1879  
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Default RE: Extreme Flight 88" Yak - Build and Fly

how do u guys set up the resolution on your throttle the guys on dod taught me to use a longer arm on the carb and shorter on the servo for better resolution; therefore, i took the idea to the work horse. Hopefully from the pics you can see were the left stick is in relationship to the carb opening:
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Old 04-17-2007, 07:33 AM
  #1880  
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Default RE: Extreme Flight 88" Yak - Build and Fly

thanks mokken...

what ever came of the problems some had with loose ball links, or control horns? the hardware has been good in the past with ef, are some of you using other stuff just as preference? do i need to replace anything else? i am going to be ordering some crap soon just want to try not to forget anything and have to pay shipping twice for a small clevis or something stupid, thanks again...
Old 04-17-2007, 09:03 AM
  #1881  
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Default RE: Extreme Flight 88" Yak - Build and Fly

ORIGINAL: diamondave

thanks mokken...

what ever came of the problems some had with loose ball links, or control horns? the hardware has been good in the past with ef, are some of you using other stuff just as preference? do i need to replace anything else? i am going to be ordering some crap soon just want to try not to forget anything and have to pay shipping twice for a small clevis or something stupid, thanks again...
There was never a problem with the control horns. Some have reported a little, and I mean a little slop in the supplied 3mm ball links that are attached to the control. I used HD Dubro 4-40 ball links on the servo arms and the supplied 3mm ball links on the control horn. You could purchase Dubro 3mm HD ball links to use on the control horns, some have reported that they don't have the slop in the ball itself. You would need 6 - 3mm ball links for the control horns and 6- 4-40 ball links for the servo arms. Some have said they drilled there servo arm out for 3mm, I see no point in ruining a servo arm that you may use on another plane. The 4-40 ball links work just fine with the titanium control rods, a little tight going on, but no issues.

http://www2.towerhobbies.com/cgi-bin...&I=LXFPW7&P=ML - dubro 4-40 ball links, need 3 packs

http://www2.towerhobbies.com/cgi-bin...?&I=LXJGU3&P=7 - dubro 3mm ball links, need 3 packs
Old 04-17-2007, 05:45 PM
  #1882  
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Default RE: Extreme Flight 88" Yak - Build and Fly

Hey maudib! I hope that you are out flying today! I just Landed at CVG and the WX here in northern KY is just beautiful, perfect day for RC flying!
Old 04-17-2007, 06:59 PM
  #1883  
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Default RE: Extreme Flight 88" Yak - Build and Fly

Got 3 more flights in on the yak today. Plane flies great and I was able to dial the B60 in. Engine runs better every flight. I was lean on the bottom and rich on top. At the end of the day I was running the Xoar 23 x 8 at 6900. I'm still running lawnboy 40:1. Man that stuff is hard to clean off. Worse than glow fuel. How long before I can start running the good oil? Did some hovering and harriers today. Rock solid. Good day today! Temp was around 70 and wind didn't get above 5mph.
Old 04-17-2007, 07:06 PM
  #1884  
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Default RE: Extreme Flight 88" Yak - Build and Fly

I've been battling BAD Bronchitis... all I can do is look out the window and wish....
Old 04-17-2007, 07:08 PM
  #1885  
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Default RE: Extreme Flight 88" Yak - Build and Fly

You really don't even NEED to run it... but a gallon (you're about there already!) should be fine to get things a goin'

ORIGINAL: cwhite

Got 3 more flights in on the yak today. Plane flies great and I was able to dial the B60 in. Engine runs better every flight. I was lean on the bottom and rich on top. At the end of the day I was running the Xoar 23 x 8 at 6900. I'm still running lawnboy 40:1. Man that stuff is hard to clean off. Worse than glow fuel. How long before I can start running the good oil? Did some hovering and harriers today. Rock solid. Good day today! Temp was around 70 and wind didn't get above 5mph.
Old 04-17-2007, 07:10 PM
  #1886  
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Default RE: Extreme Flight 88" Yak - Build and Fly

ORIGINAL: cwhite

Got 3 more flights in on the yak today. Plane flies great and I was able to dial the B60 in. Engine runs better every flight. I was lean on the bottom and rich on top. At the end of the day I was running the Xoar 23 x 8 at 6900. I'm still running lawnboy 40:1. Man that stuff is hard to clean off. Worse than glow fuel. How long before I can start running the good oil? Did some hovering and harriers today. Rock solid. Good day today! Temp was around 70 and wind didn't get above 5mph.
DA recommends 4 gallons of break-in before switching. You should check with Brillelli and see what they recommend.
Old 04-17-2007, 07:35 PM
  #1887  
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Default RE: Extreme Flight 88" Yak - Build and Fly


ORIGINAL: Mokken

DA recommends 4 gallons of break-in before switching. You should check with Brillelli and see what they recommend.
1 gallon of 40:1 is what Scott recommends [8D]
Old 04-17-2007, 07:51 PM
  #1888  
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Default RE: Extreme Flight 88" Yak - Build and Fly


ORIGINAL: Josey Wales


ORIGINAL: Mokken

DA recommends 4 gallons of break-in before switching. You should check with Brillelli and see what they recommend.
1 gallon of 40:1 is what Scott recommends [8D]
I wonder if you couldn't do that for any engine. I never understood why you needed to run 4 gallons through a DA, but I always have.
Old 04-17-2007, 07:54 PM
  #1889  
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Default RE: Extreme Flight 88" Yak - Build and Fly


ORIGINAL: Mokken


ORIGINAL: Josey Wales


ORIGINAL: Mokken

DA recommends 4 gallons of break-in before switching. You should check with Brillelli and see what they recommend.
1 gallon of 40:1 is what Scott recommends [8D]
I wonder if you couldn't do that for any engine. I never understood why you needed to run 4 gallons through a DA, but I always have.
Yea I agree...I ran my first DA in with 4 gallons of that Lawnsludge and my second one I stopped at 2 and saw no difference in performance...Maybe DA's are made from a magical new alloy!!
Old 04-17-2007, 08:41 PM
  #1890  
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Default RE: Extreme Flight 88" Yak - Build and Fly

What do you guys recommend for a good synthetic besides Amsoil? What can I expect when switching from 40:1 Lawnboy to 50:1 synthetic as far as needle settings.
Old 04-17-2007, 08:58 PM
  #1891  
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Default RE: Extreme Flight 88" Yak - Build and Fly

ORIGINAL: cwhite

What do you guys recommend for a good synthetic besides Amsoil? What can I expect when switching from 40:1 Lawnboy to 50:1 synthetic as far as needle settings.

I didn't touch my needles when I switched oils. I don't know of any other oil I would run but Amsoil. I think it's one of those preference things on which oil to run. I myself would never run anything other than Amsoil.
Old 04-17-2007, 09:03 PM
  #1892  
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Default RE: Extreme Flight 88" Yak - Build and Fly

Ive settled on Belray MC-1 50:1....I can get it local
Old 04-17-2007, 09:13 PM
  #1893  
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Default RE: Extreme Flight 88" Yak - Build and Fly

Have 3 gallons of 40:1 Pennzoil Air cooled thru the Brillelli. Swinging a Zoar 24 x 8 and motor keeps getting stronger & smoother. Will go to Bel Ray MC-1 at 50:1 next outting.

88" Yak has proven to have an unlimited flight envelope and NO bad habits! Plane flies Great! Should have the RC Supergear this week and I will post a new updated weight.

Talked to Chris this morning and I got on the waiting list for the 88.5" Extra. He said basically the same flight characteristics as the 88" Yak and in the 16 lb range. I guess the Extra fuselage weighs less, has less ROUNDNESS???? Is that a word or a description?

Okay, I will say it. "Who wants to start the Extreme Flight 88.5" Extra Thread?"

http://image.rcuniverse.com/forum/up...45/Db85677.jpg
"Yak Man w/ an Extra side dish"
Old 04-17-2007, 09:19 PM
  #1894  
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Default RE: Extreme Flight 88" Yak - Build and Fly

i run yamalube 2s semi-synthetic on my motors, rc showcase had recomended that to me, they say it was one of the cleanest burning oils they found, and internally they look the best when they have taken them apart for other repairs, i have been using it for a year now and love it, very clean i think, it says for injectors on the labe but the back has the mixture chart also, i run 40:1, zdz says sstay at theat mixture for any in cowl set up, used penzoil 32:1 for break in, 4 gallons, but that was clean too i thought....just a thought, and the yamalube is easy to get for me, any yamaha dealer...here is a link to thier shpeal...

http://www.rcshowcase.com/html/accessories/oil.html
Old 04-17-2007, 09:29 PM
  #1895  
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Default RE: Extreme Flight 88" Yak - Build and Fly


ORIGINAL: Mokken

ORIGINAL: diamondave

thanks mokken...

what ever came of the problems some had with loose ball links, or control horns? the hardware has been good in the past with ef, are some of you using other stuff just as preference? do i need to replace anything else? i am going to be ordering some crap soon just want to try not to forget anything and have to pay shipping twice for a small clevis or something stupid, thanks again...
There was never a problem with the control horns. Some have reported a little, and I mean a little slop in the supplied 3mm ball links that are attached to the control. I used HD Dubro 4-40 ball links on the servo arms and the supplied 3mm ball links on the control horn. You could purchase Dubro 3mm HD ball links to use on the control horns, some have reported that they don't have the slop in the ball itself. You would need 6 - 3mm ball links for the control horns and 6- 4-40 ball links for the servo arms. Some have said they drilled there servo arm out for 3mm, I see no point in ruining a servo arm that you may use on another plane. The 4-40 ball links work just fine with the titanium control rods, a little tight going on, but no issues.

http://www2.towerhobbies.com/cgi-bin...&I=LXFPW7&P=ML - dubro 4-40 ball links, need 3 packs

http://www2.towerhobbies.com/cgi-bin...?&I=LXJGU3&P=7 - dubro 3mm ball links, need 3 packs
so i should just wait until i get it and see what happens? then spend more money if need be
Old 04-17-2007, 09:40 PM
  #1896  
Richard D Bahmann aka/Wrongway
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Default RE: Extreme Flight 88" Yak - Build and Fly

I figure if the Amsoil at 100 to 1 is good enough for the pro guys using on the 150 cc engines, it is good enough for my smaller gasser.
I have been using Amsoil for my Automotive, Aviation, and small 2 stroke engines for a little over 20 years now. You just can't beat a good synthetic. BTW did you guys know that synthetic lubes is the only material that will work in a commercial jet engine? Different formulation for sure but synthetic just the same. Synthetics are formulated to take the extreme temps and pressures and excell dino oils.

Yak Man, how are you liking the Zoar prop? What kind of rpm range are you getting from it?

Thanks
Old 04-17-2007, 09:46 PM
  #1897  
Jake Ruddy
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Default RE: Extreme Flight 88" Yak - Build and Fly

rdb127: Not sure which engine you are running.. but just an FYI incase.. Scott is not a supporter of the Amsoil 100:1 on the Brillelli engines. He is a firm supported of Penzoil 50:1 and the Opti 2 he sells on his site which Comes out to about 70:1 located here... http://www.brillelli.com/brillelli_004.htm
Old 04-17-2007, 09:50 PM
  #1898  
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Default RE: Extreme Flight 88" Yak - Build and Fly

No Brielli. I have DA, Zenoah and 3W.

DA actually reccommends the Amsoil. ZDZ reccommends a synthetic lube at 40 or 50 to one depending on the engine. 3W also reccommends a "Fully Synthetic" after engine break in at 50 to 1.


The Opti Lube, Amsoil and Pennzoil all are tested in standard industry tests. Amsoil has passed all three industry tests ISO-L-EGD, JASO FD, API TC the other guys list one or the other in the same category.


All info from respective websites
Old 04-18-2007, 12:17 AM
  #1899  
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Default RE: Extreme Flight 88" Yak - Build and Fly

I have some Opti 2 I will sell you !
ORIGINAL: sinergy

rdb127: Not sure which engine you are running.. but just an FYI incase.. Scott is not a supporter of the Amsoil 100:1 on the Brillelli engines. He is a firm supported of Penzoil 50:1 and the Opti 2 he sells on his site which Comes out to about 70:1 located here... http://www.brillelli.com/brillelli_004.htm
Old 04-18-2007, 07:42 AM
  #1900  
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Default RE: Extreme Flight 88" Yak - Build and Fly

hey bosshoss, your description of the original yak makes me wonder if i should have gotten one of those[sm=50_50.gif], i love the extreme kite analogy, but i think i will stick with this one for now, i told my wife next year i was going to get a warbird, like a corsair or something, i may have to get that other yak now, save it for my fast and violent moves

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