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

Extreme Flight 87" Yak 54 - Build & Fly

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

Extreme Flight 87" Yak 54 - Build & Fly

Old 05-29-2005, 12:30 AM
  #5051  
bodywerks
My Feedback: (4)
 
bodywerks's Avatar
 
Join Date: Dec 2004
Location: Elgin, AZ
Posts: 3,875
Received 58 Likes on 53 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: BARCC

will someone answer me? Hey, I have another opportunity, I'm sure all of u guys have heard of Tristan or Trystan Kline or Cline (used to be world's youngest AMA pilot and did IMAC)(he lives about 2 miles away from me), right? Well, he doesnt fly any more, but his dad was a dealer for Chip Hyde, and Planes Plus, and he says he has 2 planes!! a 25%, and a 27%, I bet that 25% he didn't have time to mention them, but he said 1 is a extra, and 1 is a cap, I bet anything that cap is the Chip Hyde 25% CAPX one, right? He said the DA50 would haul ***** with that 25%, and said on the 27% it would fly OK? Thanks!!
In terms of how this engine will haul a plane, one cannot consider the percent-to-scale, but rather the weight. You could have a 25% P-51 that weighs 25+ pounds or a 25% extra and have it weigh 13.
Old 05-29-2005, 12:37 AM
  #5052  
bodywerks
My Feedback: (4)
 
bodywerks's Avatar
 
Join Date: Dec 2004
Location: Elgin, AZ
Posts: 3,875
Received 58 Likes on 53 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: ben beyer

Ok, quick question. Is anyone running just a plain 50cc that's not on a tuned pipe in this airplane? How's the performance?
They are almost an even trade. I am using stock. My engine is brand new with less than a gallon through it and I live at 6800feet altitude, and I still have unlimited vertical. I am also at a glider-like weight of 15 pounds. The tuned pipe will add over 13 ounces (most piped versions seem to be in the 16.5lb range) but will provide an extra 4 pounds(claimed) of thrust. It will also be trickier to get the cg right and it is more expensive and more of a pain to install...now that I think of it, a stock muffler is the better way to go, IMO.
Old 05-29-2005, 06:15 AM
  #5053  
stomper
Senior Member
My Feedback: (20)
 
Join Date: Dec 2001
Location: Clayton, NC
Posts: 2,249
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: bodyworks


ORIGINAL: ben beyer

Ok, quick question. Is anyone running just a plain 50cc that's not on a tuned pipe in this airplane? How's the performance?
They are almost an even trade. I am using stock. My engine is brand new with less than a gallon through it and I live at 6800feet altitude, and I still have unlimited vertical. I am also at a glider-like weight of 15 pounds. The tuned pipe will add over 13 ounces (most piped versions seem to be in the 16.5lb range) but will provide an extra 4 pounds(claimed) of thrust. It will also be trickier to get the cg right and it is more expensive and more of a pain to install...now that I think of it, a stock muffler is the better way to go, IMO.
My plane came in at 15LB 10OZ with KS 1060 pipe. I did have to move the rudder servo forward six inchs and the engine 1/2" forward.
Old 05-29-2005, 08:24 AM
  #5054  
jrjohn
Senior Member
My Feedback: (24)
 
Join Date: Jan 2002
Location: stevens point, WI
Posts: 2,364
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: ben beyer

Ok, quick question. Is anyone running just a plain 50cc that's not on a tuned pipe in this airplane? How's the performance?

you only need a pipe if noise is an issue. The muffler is lighter, and has the low end grunt needed for 3D. This plane is not for racing

John
Old 05-29-2005, 10:40 AM
  #5055  
stomper
Senior Member
My Feedback: (20)
 
Join Date: Dec 2001
Location: Clayton, NC
Posts: 2,249
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly


ORIGINAL: jrjohn


ORIGINAL: ben beyer

Ok, quick question. Is anyone running just a plain 50cc that's not on a tuned pipe in this airplane? How's the performance?

you only need a pipe if noise is an issue. The muffler is lighter, and has the low end grunt needed for 3D. This plane is not for racing

John
Nor is the KS 1060 pipe.
Old 05-29-2005, 11:31 AM
  #5056  
rmh
Senior Member
 
rmh's Avatar
 
Join Date: Dec 2001
Location: , UT
Posts: 12,630
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Yet another opinion--
My setup with a 10 oz pipe is exactly 15.25 lbs -
ZDZ50 -and using 23x8 Skorpa prop now (a wood Mejzlic if you will.)
There is no trickiness in throttle response - just fast responsive power.
The prop does go RIP even on the ground-so power is always simply a portion of what is available.
Come summer and a really hot day with breeze and there will still be plenty of reserve.
A good open in cowl muffler will obviously satisfy many users -look at he video of the TOC 1 model with a 50 and in cowl muffler .
This is -in my opinion -an excellent example of flying 3D up close and slow -It is literally the same weight ,size etc., as my EF model ( video is in the Giant Scale Forum) .
To fly slower takes more power - seriously .
Using the DA50 -you will be in exactly the same weight parameters as this model - so take a look .
The thread is "YAK 54 "- and the flyer's name is Adrian.
Old 05-29-2005, 02:36 PM
  #5057  
going vert
Senior Member
Thread Starter
My Feedback: (11)
 
going vert's Avatar
 
Join Date: Aug 2003
Location: Glenview, IL
Posts: 973
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

My question mark header broke yesterday in mid flight. It broke right at the flexible metal piece. I wonder if the pipe needs support at the front end?

Has anyone else broken the header, and if so, what did you do to stop if from happening again?
Old 05-29-2005, 03:04 PM
  #5058  
flat spin
Senior Member
 
Join Date: Feb 2004
Location: London, UNITED KINGDOM
Posts: 621
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Get the one from Krumscheid that they made up for this plane. It is one piece steel, Me and a mate of mine have both put six gallons through the engine no problems and i know a number of other people out there using it without problem too.
Old 05-29-2005, 05:34 PM
  #5059  
going vert
Senior Member
Thread Starter
My Feedback: (11)
 
going vert's Avatar
 
Join Date: Aug 2003
Location: Glenview, IL
Posts: 973
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

who sells them? Do they have a web site?
Old 05-29-2005, 05:49 PM
  #5060  
Maudib
Senior Member
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 87" Yak 54 - Build & Fly

DA has them... tell them you wat the solid q-mark header for the 87" EF Yak....
Old 05-29-2005, 06:43 PM
  #5061  
rmh
Senior Member
 
rmh's Avatar
 
Join Date: Dec 2001
Location: , UT
Posts: 12,630
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

The flexible header should always be attached to a muffler (or pipe) which is supported at front AND rear.
Also the flex section is for vibration control-not for bending to align with the pipe .
the flex section should remain straight
Mine has no leaks -and causes no problems -I made it but it is identical to those sold by Desert Aircraft.
A solid J type header should also have the muffler (pipe) supported .
The only none supported setups which seem to work for a long time--are those headers fashioned from ss which are extremely short -say 6".
We use these when using the JMB muffled cans -
Old 05-29-2005, 10:54 PM
  #5062  
WaPilot
Member
 
Join Date: Dec 2004
Location: spanaway, WA
Posts: 82
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

After countless hours on the state of the art CAD software and I finally came up with a solution about the cockpit mounting mechanism. Look and observe Best part... cost almost nothing and it only takes 5sec to remove a canopy.
Attached Thumbnails Click image for larger version

Name:	Om34199.jpg
Views:	15
Size:	293.2 KB
ID:	278028   Click image for larger version

Name:	Pl32529.jpg
Views:	10
Size:	315.9 KB
ID:	278029  
Old 05-29-2005, 11:10 PM
  #5063  
WaPilot
Member
 
Join Date: Dec 2004
Location: spanaway, WA
Posts: 82
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

i didn't put the rod in the front just on the back side. only need a metal rod and two wheel collars(?) no more lost blind nut or stuck 4x40 screws.
QUestion ! I have a ZDZ 50 RV with 22x10 prop. ( new engine) It flies good but not enough for 3d. Engine is fairly new and I know it takes 3-4-gallons before it makes more power. Keep in mind this is RV not a newer NG model. And it feels seriously under powered in climbing . RC Showcase recommends 50NG which has more power than the RV. Should I go with 50NG or even a 60RV??? I'm no longer considering DA because I'm sick of waiting for them. Thanks.
Attached Thumbnails Click image for larger version

Name:	Hf98378.jpg
Views:	13
Size:	38.4 KB
ID:	278031  
Old 05-29-2005, 11:13 PM
  #5064  
flyingcrazy
Senior Member
My Feedback: (28)
 
Join Date: Sep 2003
Location: crandall , GA
Posts: 338
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly


My YAK is almost ready ! Heres some pictures.
Attached Thumbnails Click image for larger version

Name:	Pn36755.jpg
Views:	13
Size:	44.4 KB
ID:	278032   Click image for larger version

Name:	Lh18634.jpg
Views:	12
Size:	61.6 KB
ID:	278033   Click image for larger version

Name:	In26544.jpg
Views:	7
Size:	40.1 KB
ID:	278034   Click image for larger version

Name:	Fz74796.jpg
Views:	12
Size:	61.0 KB
ID:	278035  
Old 05-29-2005, 11:24 PM
  #5065  
rmh
Senior Member
 
rmh's Avatar
 
Join Date: Dec 2001
Location: , UT
Posts: 12,630
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

RCShowcase is right- The NG model is the power setup for this plane
Your engine is not a dog tho - the problem is that it was designed for an open tuned system and in cowl mufflers absolutely kill it .
The 22x10 is the wrong prop in any case tho - My YAK- on 22x8 or 23x8 (50NG) simply is way over any usable speed at full throttle - 10 " pitch is of no value here .
So you can get best results with your current engine using 22x8 prop -such as Mejzlic - and a tuned setup exhaust -it all fits nicely in the model
You should easily run 7000 rpm on the AMT pipe on that engine and the Mejzlic 22x8. ( mine is way faster than that on 23x8 -but -again, it isa tuned setup)
I swapped out to a 23x8 as mine was simply turning past best torque envelope.
Hover power even here is at very low throttle settings.
OR if a pipe is not for you --look at the 50NG performance of the model flown by Adrian - in the thread I mentioned above - His setup is an in cowl.
Old 05-29-2005, 11:29 PM
  #5066  
WaPilot
Member
 
Join Date: Dec 2004
Location: spanaway, WA
Posts: 82
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Should the 60RV be too heavy? I like the fact that it has more power and can swing a bigger prop. How come Da 50 can swin a prop up to 24 but not the 50NG? thanks again.
Old 05-29-2005, 11:30 PM
  #5067  
flatlandmike
My Feedback: (17)
 
flatlandmike's Avatar
 
Join Date: Oct 2003
Location: lexington, KY
Posts: 1,228
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

stroke
Old 05-29-2005, 11:59 PM
  #5068  
flyingcrazy
Senior Member
My Feedback: (28)
 
Join Date: Sep 2003
Location: crandall , GA
Posts: 338
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Heres some more .
Attached Thumbnails Click image for larger version

Name:	Vt57669.jpg
Views:	8
Size:	60.6 KB
ID:	278057   Click image for larger version

Name:	Lg16084.jpg
Views:	12
Size:	72.0 KB
ID:	278058   Click image for larger version

Name:	Yd83228.jpg
Views:	12
Size:	91.8 KB
ID:	278059  
Old 05-30-2005, 03:19 AM
  #5069  
flat spin
Senior Member
 
Join Date: Feb 2004
Location: London, UNITED KINGDOM
Posts: 621
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Nice setup flying crazy. Can't be long now before the maiden. Did i see red covering on the back end of the fus?

ORIGINAL: going vert

who sells them? Do they have a web site?
Krumscheid. I keep telling them to get their 88VS muffler stocked with DA along with this header. The pipe is now turning a Mejzlik 23X8 @ 6700 and i have yet to switch to 1/50 and like i said the header itself is made specifically for this plane. I havn't got any spare one here or i'de send you one direct but you should not be looking more than £30 if you go direct.

You can find their e-mail from here www.krumscheid-metallwaren.de but at this time neither of these products are listed
Old 05-30-2005, 03:48 AM
  #5070  
flyingcrazy
Senior Member
My Feedback: (28)
 
Join Date: Sep 2003
Location: crandall , GA
Posts: 338
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Flat Spin you let the cat out of the bag ! I did mine a little different wating on graphics then i will post pictures of the whole plane .
Old 05-30-2005, 06:45 AM
  #5071  
vertical ts
My Feedback: (50)
 
Join Date: Jul 2003
Location: new jersey, NJ
Posts: 208
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

Have you experienced slack in your rudder cables at extreme throw?I noticed that you do not have any ofset in your rudder arm.
Old 05-30-2005, 06:56 AM
  #5072  
flat spin
Senior Member
 
Join Date: Feb 2004
Location: London, UNITED KINGDOM
Posts: 621
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

You do get quite a bit of slop with a straight arm. I must say i had the 3" Airwild which worked fine but i ended up swapping the SWB arm in and i was really suprised by the difference. The stock setup would achieve much the same thing though.
Old 05-30-2005, 07:21 AM
  #5073  
harryw13
Senior Member
 
harryw13's Avatar
 
Join Date: Dec 2002
Location: Homerville, OH
Posts: 110
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

In regards to a pipe or cannister, I have a BME 50 engine in mine. With the BME muffler it got 7000 RPM's with a MSC 22x8, I just installed Chip Hyde's Queit pipe and header combination, and I also got 7000 RPM with the MSC 22x8. The BME muffler weigh's 4 oz. and the header cannister combo weigh's about 15 oz. So a net weight gain of about 11 oz.
I'm still glad I did it, the noise difference is amazing. I'm going to fly IMAC with it this summer, and the BME muffler never would have made the sound check.
I had to make a adapter plate to get the header to fit the BME, I don't think there's a header out there that fits the BME 50.
Old 05-30-2005, 08:29 AM
  #5074  
rmh
Senior Member
 
rmh's Avatar
 
Join Date: Dec 2001
Location: , UT
Posts: 12,630
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Extreme Flight 87" Yak 54 - Build & Fly

The ZDZspins a 24" prop nicely - but I turn the 23x8 over 7200 now so why load the thing down - it is extremely responsive this way.
It is all in the setups
either engine has more than enough power .
Old 05-30-2005, 09:02 AM
  #5075  
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 87" Yak 54 - Build & Fly

Harry's plane is quiet!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Got all 10's on the sound score yesterday at the CMH IMAC.

Also does a nice recovery from a 45 downline engine flameout going downwind parallel to the runway too.

It was nice meeting you Harry, and hope to see you at more IMAC's later this summer! Thanks for showing me your CH setup.

Chip

ps My Yak with BME 50 got 5s on sound score, which is ok by me. I havent seen anyone check the sound per IMAC rules, but I think they will at the NATS. Not sure about other contests. There were some loud planes there yesterday, but none got zeros that I know of.

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.