Extreme Flight 87" Yak 54 - Build & Fly
#6877
Senior Member
My Feedback: (10)
Join Date: Aug 2003
Location: Schiller park,
IL
Posts: 1,664
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
ORIGINAL: rdb127
As far as I can remember EF said that the next 50 CC would be bigger than the 87 Yak and weigh around the same. That's gonna be cool in any book.[8D]
As far as I can remember EF said that the next 50 CC would be bigger than the 87 Yak and weigh around the same. That's gonna be cool in any book.[8D]
I am hoping it is a smoke rumor, to throw us off track of what it really is.
Yeah, what won't fit in one guys car/truck will fit in another, and this one is that , and that one is this....we all want/need different planes.
EF will put out a winner, for sure.
It will be no easy trick to make a better flying plane than the EF 87" Yak-54.
#6878
Senior Member
My Feedback: (51)
Join Date: Jul 2002
Location: Ashland, KY
Posts: 5,833
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Airwild has a new 50cc 260... 87" at under 16 lbs...
http://www.airwildhobbies.com/MoreIn...&level=2&id=43
Built similar to the EF 87" Yak was as far as phenolic horns, etc... Looks like a nice option.
The new EF plane is sure to be light and an excellent performer and I can't wait til it's announced and then released.
Still if you want something to fly this spring... there are plenty planes to choose from that are available now... like these 260's.
Just make sure to start adding to that RC piggy bank again right away, as when this new EF plane is announced you will NOT want to be at the end of the list.
http://www.airwildhobbies.com/MoreIn...&level=2&id=43
Built similar to the EF 87" Yak was as far as phenolic horns, etc... Looks like a nice option.
The new EF plane is sure to be light and an excellent performer and I can't wait til it's announced and then released.
Still if you want something to fly this spring... there are plenty planes to choose from that are available now... like these 260's.
Just make sure to start adding to that RC piggy bank again right away, as when this new EF plane is announced you will NOT want to be at the end of the list.
#6879
Senior Member
My Feedback: (21)
Join Date: Jan 2004
Location: Scottsville,
KY
Posts: 1,242
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
ORIGINAL: Bosshossv8
... The 260 , I am on board with, but man, NO ONE has a PITTS S-12 in 50cc.
And....Mike Hall is a Pitts S-12 expert. ..........supersize that big one, Mike .
I would find room to store 3 of those....
... The 260 , I am on board with, but man, NO ONE has a PITTS S-12 in 50cc.
And....Mike Hall is a Pitts S-12 expert. ..........supersize that big one, Mike .
I would find room to store 3 of those....
Sorry, check out flyinggiants for some info on a 50cc Pitts M12 that's coming. Same color scheme as the Goldberg M12 1.2 size. Really awesome looking plane.
#6881
Senior Member
My Feedback: (10)
Join Date: Aug 2003
Location: Schiller park,
IL
Posts: 1,664
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Yes, I like it. And one will be here as soon as they arrive. I wanted it to be a Mike Hall designed one, but it looks like it ain't happening here for a while.
Of course, Aerotech says July, things could change by then.
Of course, Aerotech says July, things could change by then.
#6882
My Feedback: (25)
Join Date: Aug 2002
Location: Dayton, NV
Posts: 649
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
I have the same thoughts.I will pre order one of the Aerotec pitts for a new DA50 I have coming.As far as end of July that could turn into Sept/Oct as we have all seen this to be the case all to often.If Chris and Mike come up with there own Pitts I will be first in line to get one.Oh well untill then i will just have to be happy flying my good ol Extreme 87" Yak
#6883
Senior Member
My Feedback: (10)
Join Date: Aug 2003
Location: Schiller park,
IL
Posts: 1,664
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
ORIGINAL: edgeman55-RCU
I have the same thoughts.I will pre order one of the Aerotec pitts for a new DA50 I have coming.As far as end of July that could turn into Sept/Oct as we have all seen this to be the case all to often.If Chris and Mike come up with there own Pitts I will be first in line to get one.Oh well untill then i will just have to be happy flying my good ol Extreme 87" Yak
I have the same thoughts.I will pre order one of the Aerotec pitts for a new DA50 I have coming.As far as end of July that could turn into Sept/Oct as we have all seen this to be the case all to often.If Chris and Mike come up with there own Pitts I will be first in line to get one.Oh well untill then i will just have to be happy flying my good ol Extreme 87" Yak
My thoughts exactly.
I flew my 87 EF Yak-54 today, and really got aggressive with it. It is fantastic, and only the truly addicted need another plane.
The way this plane does a tumble from nose up hover is just plain insane. Just like or better than the best shockie I have ever flown.
I have one question to those who have logged a lot of gallons on one of these....
Has anyone had a wing-tube split or fray or crack on the ends??
I have a very small mark on the end of my Wing-tube , that looks like it might end up splitting there....I am being paranoid, but it is a deep gouge , about 2cm long and half the thickness of the tube deep.
Eh??
I don't think I will ever be going back to the Extra Pound and half Yaks.
#6887
My Feedback: (5)
Join Date: Nov 2002
Location: MississaugaON, CANADA
Posts: 211
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Hi guys,
Just going to install my DA 50 and decided to go with a can.
Does anyone know if I use the MTW 75 K can what the drop is on the header. I think I saw somewhere in here that it was a 0" drop. I tried contacting DA but no answer to my emails yet.[][]
My LHS has one in stock with a 1" drop but won't sell the can and header seperately so i need to know if i have to get him to order a new set in.
Thanx in advance for your help.
Here are some shots of my Yak so far.. I got one of the all white ones.
http://i4.photobucket.com/albums/y14...d/P1220336.jpg
http://i4.photobucket.com/albums/y14...d/P1220337.jpg
http://i4.photobucket.com/albums/y14...d/P1220338.jpg
http://i4.photobucket.com/albums/y14...d/P1220340.jpg
Just going to install my DA 50 and decided to go with a can.
Does anyone know if I use the MTW 75 K can what the drop is on the header. I think I saw somewhere in here that it was a 0" drop. I tried contacting DA but no answer to my emails yet.[][]
My LHS has one in stock with a 1" drop but won't sell the can and header seperately so i need to know if i have to get him to order a new set in.
Thanx in advance for your help.
Here are some shots of my Yak so far.. I got one of the all white ones.
http://i4.photobucket.com/albums/y14...d/P1220336.jpg
http://i4.photobucket.com/albums/y14...d/P1220337.jpg
http://i4.photobucket.com/albums/y14...d/P1220338.jpg
http://i4.photobucket.com/albums/y14...d/P1220340.jpg
#6888
Senior Member
My Feedback: (4)
Join Date: Nov 2003
Location: NavojoaSonora, MEXICO
Posts: 246
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Hi Jim, your yak looks awsome!! nice covering job!!
try calling DA on the phone! they are not good on e mails!! they will take your call and help you right away!
try calling DA on the phone! they are not good on e mails!! they will take your call and help you right away!
#6889
Senior Member
My Feedback: (10)
Join Date: Aug 2003
Location: Schiller park,
IL
Posts: 1,664
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Last couple of pages got toasted in the database crash.
I flew my EF 87 today in Chicago..no wind day, very rare this time of year.
If anyone, including EF can make a better flying plane than this, it must be magic.
I have flown the best I have ever flown , since flying this plane. After flying a 1-1/2 lb heavier Yak on windy days for while and switching to this on calm days, this plane seems like a foamy. It is like a video game with the gravity turned down.
I flew my EF 87 today in Chicago..no wind day, very rare this time of year.
If anyone, including EF can make a better flying plane than this, it must be magic.
I have flown the best I have ever flown , since flying this plane. After flying a 1-1/2 lb heavier Yak on windy days for while and switching to this on calm days, this plane seems like a foamy. It is like a video game with the gravity turned down.
#6891
My Feedback: (5)
Join Date: Jan 2002
Location: Toronto,
ON, CANADA
Posts: 578
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Hey guys,
I haven't posted in this thread for a while since I smacked up my Yak at the end of last season and it has been collecting dust in the corner of my workshop waiting for me to make it a new motor box
My winter build time was consumed by designing a brand new 50CC Yak and I took a lot of inspiration from my beloved EF Yak. I lengthened the fuse about 6 inches, thickened the airfoil just a tad and made the rudder, ailerons and elevators bigger. Oh, and I also added 150 Sq Inches of wing area. All this came out to 16 lbs flat but I am using a set of aluminum gear that weighs nearly a pound more than the EF Yak's composite set. I primarily designed this as a 3D machine rather than a pattern ship.
I had it laser cut since there were so many intricate interlocking pieces, I would have gone insane trying to cut it myself.
I have managed to borrow a few parts from my EF Yak including a spare dinged up canopy (I cut out the wood frame and substituted my own), the cowl and the servo arms. Doing this kept the cost around $350.
Tomorrow is the big day for the maiden and I have my fingers and toes crossed!
Sorry if it sounds like I hijacked the thread...I figured I'd post it here since this airplane is in many ways the offspring of the EF Yak.
If anyone cares to read about the design thread, it is in the Scratch Building forum under "Rollin' my own 50CC Yak 54"
If this design goes well, I will probably scale it to a 40% version just for giggles.
Cheers!
John
I haven't posted in this thread for a while since I smacked up my Yak at the end of last season and it has been collecting dust in the corner of my workshop waiting for me to make it a new motor box
My winter build time was consumed by designing a brand new 50CC Yak and I took a lot of inspiration from my beloved EF Yak. I lengthened the fuse about 6 inches, thickened the airfoil just a tad and made the rudder, ailerons and elevators bigger. Oh, and I also added 150 Sq Inches of wing area. All this came out to 16 lbs flat but I am using a set of aluminum gear that weighs nearly a pound more than the EF Yak's composite set. I primarily designed this as a 3D machine rather than a pattern ship.
I had it laser cut since there were so many intricate interlocking pieces, I would have gone insane trying to cut it myself.
I have managed to borrow a few parts from my EF Yak including a spare dinged up canopy (I cut out the wood frame and substituted my own), the cowl and the servo arms. Doing this kept the cost around $350.
Tomorrow is the big day for the maiden and I have my fingers and toes crossed!
Sorry if it sounds like I hijacked the thread...I figured I'd post it here since this airplane is in many ways the offspring of the EF Yak.
If anyone cares to read about the design thread, it is in the Scratch Building forum under "Rollin' my own 50CC Yak 54"
If this design goes well, I will probably scale it to a 40% version just for giggles.
Cheers!
John
#6893
Senior Member
My Feedback: (51)
Join Date: Aug 2002
Location: Bradenton, FL
Posts: 1,243
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Hi Guy's
I picked up an Extreme-Flight Yak 87" Model. Funny thing I measured it and it is only 85"s on the Wing Span.
Without reading 276 pages can someone give me the heads up on the following questions.
The Model to me looks short coupled so I am wondering if the small Cannister about 1/2 the pipe tunnel will give me CG troubles?
If that is so am I better off just using the Slimline with the DA 50?
I was planning on the MEJZLIK 23 * 8 what is the Vertical performance like?
The Blue covering is it Ultra Cote or China Cote?
Thanks
Ian
I picked up an Extreme-Flight Yak 87" Model. Funny thing I measured it and it is only 85"s on the Wing Span.
Without reading 276 pages can someone give me the heads up on the following questions.
The Model to me looks short coupled so I am wondering if the small Cannister about 1/2 the pipe tunnel will give me CG troubles?
If that is so am I better off just using the Slimline with the DA 50?
I was planning on the MEJZLIK 23 * 8 what is the Vertical performance like?
The Blue covering is it Ultra Cote or China Cote?
Thanks
Ian
#6894
Senior Member
My Feedback: (61)
Join Date: Jul 2003
Location: **,
NJ
Posts: 4,741
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Covering is Ultracote
I had a Slimline and it works fine but I switched it for the stock exhaust and I like much better..More power and its lighter..
I had a Slimline and it works fine but I switched it for the stock exhaust and I like much better..More power and its lighter..
#6895
Senior Member
My Feedback: (4)
Join Date: Nov 2003
Location: NavojoaSonora, MEXICO
Posts: 246
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
dont worry about de CG, if you use the full lenght pipe you will need to place your RX battery on the engine box, if you use the stock muffler you will need to place the battery just behind the wing tube, the best options for exaust is the stock muffler or the full lenght pipe, the slimline pitts muffler is heavy and you will loose some power
I personaly dont like carbon fiber props, 23 x 8 will be just fine! I am runing 24 x 8 ( dont use this prop unless your engine is well break in) and pulls hard out of the hover!
here is a video of my plane pulling out of a hover..
http://media.putfile.com/EF-87-yak-hover
[8D]
oohh, and the covering its ultracote
I personaly dont like carbon fiber props, 23 x 8 will be just fine! I am runing 24 x 8 ( dont use this prop unless your engine is well break in) and pulls hard out of the hover!
here is a video of my plane pulling out of a hover..
http://media.putfile.com/EF-87-yak-hover
[8D]
oohh, and the covering its ultracote
#6896
Senior Member
Join Date: Feb 2004
Location: henderson,
TX
Posts: 536
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Let's see, you measured wing at 85" & it's 84 " long,-- And you call that short coupled? HUH.
ORIGINAL: Flyjets
Hi Guy's
I picked up an Extreme-Flight Yak 87" Model. Funny thing I measured it and it is only 85"s on the Wing Span.
Without reading 276 pages can someone give me the heads up on the following questions.
The Model to me looks short coupled so I am wondering if the small Cannister about 1/2 the pipe tunnel will give me CG troubles?
If that is so am I better off just using the Slimline with the DA 50?
I was planning on the MEJZLIK 23 * 8 what is the Vertical performance like?
The Blue covering is it Ultra Cote or China Cote?
Thanks
Ian
Hi Guy's
I picked up an Extreme-Flight Yak 87" Model. Funny thing I measured it and it is only 85"s on the Wing Span.
Without reading 276 pages can someone give me the heads up on the following questions.
The Model to me looks short coupled so I am wondering if the small Cannister about 1/2 the pipe tunnel will give me CG troubles?
If that is so am I better off just using the Slimline with the DA 50?
I was planning on the MEJZLIK 23 * 8 what is the Vertical performance like?
The Blue covering is it Ultra Cote or China Cote?
Thanks
Ian
#6897
My Feedback: (5)
Join Date: Nov 2002
Location: MississaugaON, CANADA
Posts: 211
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
ORIGINAL: rdb127
Second guess though is a Suhkoi with 88-90 inch wing and no bad flight tendencies that will still take a 50cc. Nobody is doing Suhkois any more. Lately its all the Yak craze (started by EF) ánd Extra 260's. My bet is that he will go where no manufactures are going and bring us something very desirable. Come on Chris, my tax refund is on the way....Help me spend it before the wife does!!
ORIGINAL: JWilliams
My guess on the next plane, 74" yak 54.
Jeff
My guess on the next plane, 74" yak 54.
Jeff
He was showing a 74" Yak 54 at Toledo that was standard Grade A EF quality. Looks to be a good match for the OS 1.60 slimer.
#6898
My Feedback: (5)
Join Date: Nov 2002
Location: MississaugaON, CANADA
Posts: 211
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
ORIGINAL: coche
dont worry about de CG, if you use the full lenght pipe you will need to place your RX battery on the engine box, if you use the stock muffler you will need to place the battery just behind the wing tube, the best options for exaust is the stock muffler or the full lenght pipe, the slimline pitts muffler is heavy and you will loose some power
I personaly dont like carbon fiber props, 23 x 8 will be just fine! I am runing 24 x 8 ( dont use this prop unless your engine is well break in) and pulls hard out of the hover!
here is a video of my plane pulling out of a hover..
http://media.putfile.com/EF-87-yak-hover
[8D]
oohh, and the covering its ultracote
dont worry about de CG, if you use the full lenght pipe you will need to place your RX battery on the engine box, if you use the stock muffler you will need to place the battery just behind the wing tube, the best options for exaust is the stock muffler or the full lenght pipe, the slimline pitts muffler is heavy and you will loose some power
I personaly dont like carbon fiber props, 23 x 8 will be just fine! I am runing 24 x 8 ( dont use this prop unless your engine is well break in) and pulls hard out of the hover!
here is a video of my plane pulling out of a hover..
http://media.putfile.com/EF-87-yak-hover
[8D]
oohh, and the covering its ultracote
Who is running this setup? What have you found?
Thanx in advance.[8D]
#6899
My Feedback: (5)
Join Date: Nov 2002
Location: MississaugaON, CANADA
Posts: 211
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
Oh one other question while I am here.
On the 68" Yak it was suggested to glue a support piece behind the plywood tab that the cowl screwed on to. I did and never had any problems with the plywood cracking. Is it necessary to do the same thing for the 87" model?
On the 68" Yak it was suggested to glue a support piece behind the plywood tab that the cowl screwed on to. I did and never had any problems with the plywood cracking. Is it necessary to do the same thing for the 87" model?
#6900
Senior Member
Join Date: Feb 2004
Location: henderson,
TX
Posts: 536
Likes: 0
Received 0 Likes
on
0 Posts
RE: Extreme Flight 87" Yak 54 - Build & Fly
All the covering on the Yak is Ultracote.
The vertical performance is absolutely unlimited. You can do a snap,or double snap, on the upline & it just keeps going vertical. Keep the weight under 16 lbs, preferably between 15 & 15 1/2 lbs. If it gets too heavy with the canister, dump it & go with stock muffler, it's more than you'll ever need.
With the design of this aircraft, it is balanced, it's flies true, it's light on the wing, it goes exactly where you aim it, & it will do anything you are capable of throwing at it. Just wait till you fly it. You will answer me back that I was too conservative with my assessment.
I have a buddy who maidened his yesterday, called me last night at 10:00 pm saying it is the most fantastic flying plane he has ever had.
The vertical performance is absolutely unlimited. You can do a snap,or double snap, on the upline & it just keeps going vertical. Keep the weight under 16 lbs, preferably between 15 & 15 1/2 lbs. If it gets too heavy with the canister, dump it & go with stock muffler, it's more than you'll ever need.
With the design of this aircraft, it is balanced, it's flies true, it's light on the wing, it goes exactly where you aim it, & it will do anything you are capable of throwing at it. Just wait till you fly it. You will answer me back that I was too conservative with my assessment.
I have a buddy who maidened his yesterday, called me last night at 10:00 pm saying it is the most fantastic flying plane he has ever had.