Go Back  RCU Forums > RC Airplanes > Giant Scale Aircraft - 3D & Aerobatic
Reload this Page >

Extreme Flight 88" Yak - Build and Fly

Community
Search
Notices
Giant Scale Aircraft - 3D & Aerobatic Discuss all your 3D & Aerobatic giant scale airplanes right here!

Extreme Flight 88" Yak - Build and Fly

Thread Tools
 
Search this Thread
 
Old 06-01-2007, 07:48 AM
  #2851  
SoCalSal
My Feedback: (16)
 
Join Date: Mar 2005
Location: spring valley , CA
Posts: 1,309
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly


[quote]ORIGINAL: diamondave

thanks for your input donnie, i am thinking the same, i will love this 88 but i want to keep my 80 in something slightly bigger, cant afford stepping up much more than that, if so i would look at comp arf's mx2, a buddy let me fly his with a 150, that was a sweet plane, tons better than my 2.3 extra from comparf, but no way i could spend 4-5g's to get a plane going, not while i am married anyway


The last 6 words of this post might be your problem or cure Just kidding
Old 06-01-2007, 09:19 AM
  #2852  
chipwill
Senior Member
My Feedback: (12)
 
Join Date: Jul 2004
Location: Columbus, OH
Posts: 128
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

Well guys,

I checked everything that I could.....

The Servos all work ( the expensive ones anyhow, not the throttle ), the engine is going back to Scott for repair. It actually looks almost ok cept for a dent on the muffler. The mpi regulator was dead.
Perhaps this was the culprit afterall.

It is so hard to tell anything about it.

I am still very nervous about putting the Dx 7 in something else though, because of the reboot time, but maybe I will get over that in time.


Thanks guys- I didn't know the mpi regs were that bad. I use them in my high performance sailplanes with 2 cell fromeco packs and never had a problem. I guess I will re evaluate that though!
Anyone know of reliable SMALL regulators that will fit into a sailplane fuse?

Chip
Old 06-01-2007, 09:33 AM
  #2853  
jrjohn
Senior Member
My Feedback: (24)
 
Join Date: Jan 2002
Location: stevens point, WI
Posts: 2,364
Likes: 0
Received 1 Like on 1 Post
Default RE: Extreme Flight 88" Yak - Build and Fly


ORIGINAL: chipwill

Well guys,

I checked everything that I could.....

The Servos all work ( the expensive ones anyhow, not the throttle ), the engine is going back to Scott for repair. It actually looks almost ok cept for a dent on the muffler. The mpi regulator was dead.
Perhaps this was the culprit afterall.

It is so hard to tell anything about it.

I am still very nervous about putting the Dx 7 in something else though, because of the reboot time, but maybe I will get over that in time.


Thanks guys- I didn't know the mpi regs were that bad. I use them in my high performance sailplanes with 2 cell fromeco packs and never had a problem. I guess I will re evaluate that though!
Anyone know of reliable SMALL regulators that will fit into a sailplane fuse?

Chip
Chip, I think the MPI is OK in a sail plane. I could be wrong but I think it's vibration that kills the MPI Reg.

John
Old 06-01-2007, 10:52 AM
  #2854  
EXTREME FLIGHT
Senior Member
 
EXTREME FLIGHT's Avatar
 
Join Date: Jan 2003
Location: Buford, GA
Posts: 779
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

Dave, I will try my best to get yours out today.
As of this morning we have 6 yellow/black and 17 red/white/black/silver Yaks left from this shipment.

Guys, I'm sorry for the loss of your planes. A local flyer lost his last night due to some sort of radio issue. That's just sickening[:'(].
Old 06-01-2007, 03:07 PM
  #2855  
EXTREME FLIGHT
Senior Member
 
EXTREME FLIGHT's Avatar
 
Join Date: Jan 2003
Location: Buford, GA
Posts: 779
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

diamondave, it's on the way!!!
Old 06-01-2007, 04:04 PM
  #2856  
Railinrob
Senior Member
 
Join Date: May 2004
Location: salinas, CA
Posts: 192
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

OOOhhhhhh there Dave you're in for a treat once you get that bad boy. This plane is the best thing since sliced bread
Old 06-01-2007, 08:36 PM
  #2857  
thomasf
My Feedback: (1)
 
Join Date: Jul 2004
Location: san leandro, CA
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

Daimondave did you get the black and yellow? It's so perrty, nice simple lines, not all busy like other planes.
I think the stock landing gear will also exaggerate a bounce on landing, I'm also thinking about a CF gear, thinking about the RC supergear.[sm=72_72.gif]
Old 06-01-2007, 08:43 PM
  #2858  
Josey Wales
Senior Member
My Feedback: (61)
 
Josey Wales's Avatar
 
Join Date: Jul 2003
Location: **, NJ
Posts: 4,741
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

I fly off of grass and the stock gear works perfectly..doesn't flex much at all..
Old 06-01-2007, 08:50 PM
  #2859  
thomasf
My Feedback: (1)
 
Join Date: Jul 2004
Location: san leandro, CA
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

I guess I just suck at landing
Old 06-01-2007, 09:16 PM
  #2860  
AirWizard
Senior Member
My Feedback: (3)
 
AirWizard's Avatar
 
Join Date: Apr 2004
Location: Coffeyville, KS
Posts: 1,228
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

I like the way this plane floats in for landing.......I'm also flying off grass and haven't had any landing gear issues YET.

Compared to my Edge and TOC1 Yak.....this plane lands like a dream.
Old 06-02-2007, 07:11 AM
  #2861  
JagBone
Senior Member
 
Join Date: May 2003
Location: OCOEE, FL
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

I'm trying to catchup reading all these posts! Good and helpful thread!! (at page 70 now. )
My B&W should ship in a week or so. - in the mean time, I was wondering if someone would measure the center hub portion of the cowling (baffle) vane for me. Judging by Mokken's admitted 4.5" spinner, it appears (from the back of his truckbed) to be 5.5" possibly? I'm seriously considering matching that diameter for my spinner and going with a three bladed prop. Will be bolting a DA50R w/ canister up front.
Comments - suggestions?? (I'm sure there is some opposition and collaboration in this effort and eager to hear both!)
Thanks for your help!
Old 06-02-2007, 07:40 AM
  #2862  
Whirlyspud
Senior Member
 
Join Date: Jan 2002
Location: Morton Grove, IL
Posts: 285
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

If I understand the question right, it measures 4 5/8.

Thats the diameter of the center round area inside the vanes.

Mike
Old 06-02-2007, 07:47 AM
  #2863  
JagBone
Senior Member
 
Join Date: May 2003
Location: OCOEE, FL
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

Interesting and thanks for the reply! ( now I'm working both ends of the huge message thread!)
Look at the cowl pics on page 68. I believe he said his spinner was told to be 4.5". What gives?
(I would post his jpg picture but - can't get pictures to load; possibly a MAC conflict? I keep getting "error saving file to disk" message)
Old 06-02-2007, 07:58 AM
  #2864  
Richard D Bahmann aka/Wrongway
Senior Member
My Feedback: (42)
 
Richard D Bahmann aka/Wrongway's Avatar
 
Join Date: Jan 2004
Location: Ormond Beach, FL
Posts: 2,422
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

So the closest you might match it would be a 4 1/2 inch spinner. There should be no doubt that a 3blade on that setup would fly it. The question would be the performance level on a muffler or cannister. With the extra power of a pipe matched to a 3 blader my guess is that performance would do all you want from it. JMO

Come on over some time to the Daytona club. Especially after your plane is done, we could get a squadron of Yaks on the line[8D]
Attached Thumbnails Click image for larger version

Name:	Mj24280.jpg
Views:	17
Size:	38.3 KB
ID:	695880  
Old 06-02-2007, 08:01 AM
  #2865  
AirWizard
Senior Member
My Feedback: (3)
 
AirWizard's Avatar
 
Join Date: Apr 2004
Location: Coffeyville, KS
Posts: 1,228
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

I'm using a 4" spinner......I think the only problem with using a 3 blade prop is having enough blade sticking out from around the cowl for prop wash.
Old 06-02-2007, 08:03 AM
  #2866  
Maudib
Senior Member
Thread Starter
My Feedback: (51)
 
Maudib's Avatar
 
Join Date: Jul 2002
Location: Ashland, KY
Posts: 5,833
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

Guys...

Horizon does offer a special unit that prevents the voltage from dropping too low... it's basically a capacitor I think... I just plugs into an open port 9or "Y" I suppose)

It's always better to have a strong electrical system from the get go... but this should prevent the reset (not that any of htese were related to the reset)

I am soon going to be doign some tests on the A123 packs which supposed lay out to 6.8 volts or so unregged... so they might be a great choice....

The prob with unregge'd receivers is the servos... some servos are VERY jiiter and unstable on 7.2+ volts (8 volts fresh charge) and though the 5955's can do it ... HiTec doe not recommend it... for whatever reason.

The issue is the throttle servo as most grab up a "cheaper" servo and again most of them act odd on higher voltage... just a heads up...

http://www.horizonhobby.com/Products...ProdID=SPM1600

Old 06-02-2007, 08:08 AM
  #2867  
Jake Ruddy
Senior Member
My Feedback: (40)
 
Jake Ruddy's Avatar
 
Join Date: May 2005
Location: Bear, DE
Posts: 4,104
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

Dick swears by those batteries, they can handle 60c burst and charge in 15 mins
Old 06-02-2007, 08:08 AM
  #2868  
JagBone
Senior Member
 
Join Date: May 2003
Location: OCOEE, FL
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

Thanks for the invite rdb127! Ormand Beach excursion could be a great experience!
Weather today --- is great for flying webbed feet DUCKS!!
Your baffle picture is a perfect way to eliminate all confusion too!!

I heard a mumble about the huge diameter of the cowl and the 23" swing of the prop. Cowl might cut down on prop efficiency.
I am hesitant to go three blade (at this point) but certain it is needed to make a 1st. class YAK impression.
Thanks
Old 06-02-2007, 08:36 AM
  #2869  
jrjohn
Senior Member
My Feedback: (24)
 
Join Date: Jan 2002
Location: stevens point, WI
Posts: 2,364
Likes: 0
Received 1 Like on 1 Post
Default RE: Extreme Flight 88" Yak - Build and Fly

Regarding prop wash, I recently switched from a 22 inch prop to a 23 inch. I thought there was a noticable difference in my ability to control the airplane in a torqueroll. (better)

John
Old 06-02-2007, 09:29 AM
  #2870  
diamondave
Senior Member
My Feedback: (29)
 
diamondave's Avatar
 
Join Date: Sep 2004
Location: marana, AZ
Posts: 2,729
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly


ORIGINAL: EXTREME FLIGHT

diamondave, it's on the way!!!
you are the man!!! got the ups tracking #'s, should be here thursday i believe, cant wait, i did get the yellow/black one, should be all its cracked up to be and then some, after figureing wing loading on my comp arf at 33.5oz, and me thinking that flew good, i should be astonished with this one with a wl in the upper 20's, i cant even imagine what it will be like
Old 06-02-2007, 10:22 AM
  #2871  
AirWizard
Senior Member
My Feedback: (3)
 
AirWizard's Avatar
 
Join Date: Apr 2004
Location: Coffeyville, KS
Posts: 1,228
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

It will make your knees shake and your palms sweet.
Old 06-02-2007, 10:24 AM
  #2872  
xtraflyr
My Feedback: (11)
 
Join Date: Mar 2002
Location: Randolph, NJ
Posts: 2,313
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

OMG!! I finished reading the thread!! Took 3days but I finished. I too am wanting one of these. I have the 74 and it's awesome,makes you feel very confident it your abilities. I'm waiting to sell my BME Yak Airframe to order this Yak.. I hope it sells soon so I dont have to wait until August to get the next shipment.

Cya,
Frank
Old 06-02-2007, 12:01 PM
  #2873  
selwyn
My Feedback: (19)
 
Join Date: May 2002
Location: Toronto, ON, CANADA
Posts: 113
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

Guys...if one uses a DA-50 with a Bisson pitts style muffler, will the pipes exit the cowl in the same place as it did with the 87", and that was in the oil cooler square at the bottom? also what length stand-offs will I need to order 2.5 or 3" ?

Thanks all
Old 06-02-2007, 03:41 PM
  #2874  
pfoot748
My Feedback: (22)
 
Join Date: Aug 2005
Location: , OH
Posts: 141
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

Can someone tell me the voltage I should recharge my 4 cell nimh ignition battery at under a 1 amp load. I suffered a broken wire on my S.F. ignition regulator last week with my lithium setup and decided to go with a 4cell and no reg to simplify things a bit. I've always used lithiums and am not sure on the recharge voltage on these nimh. Thanks.
Old 06-02-2007, 03:57 PM
  #2875  
thomasf
My Feedback: (1)
 
Join Date: Jul 2004
Location: san leandro, CA
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 88" Yak - Build and Fly

I think it should peak around 6.7,6.8. I also run a 4cell nimh on my ignition and I'm charging mine right now to go fly tomorrow. I will see what it peaks at.


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.