RE: Seagull Yak?    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> ARF or RTF >> RE: Seagull Yak?
Page: <<   < prev  50 51 [52] 53 54 55 56 57 58 59   next >   >>  

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: Seagull Yak? - 5/5/2011 2:35 PM   
RCplanman


 

Posts: 286
Score: 105
Joined: 7/11/2008
Last Login: 6/17/2013
From: Rochester, NY, USA
Status: offline 		thanks-sure glad I didn't rush out & buy 2 or 3,Ha.

Hide Signatures

(in reply to gehr2box)
       Post #: 1276

RE: Seagull Yak? - 5/12/2011 9:16 PM   
raydar


 

Posts: 436
Score: 142
Joined: 9/5/2009
Last Login: 6/18/2013
From: stirling, UNITED KINGDOM
Status: offline 		Tested asp 120 fs 900 grams all in with 16 6 master and got 8400 rpm and 9.4 lb thrust. 

asp 120f s with 16 8 wooden prop got 7400 rpm and 9.8lbs thrust, sounded like to much prop.

Fitted rcg 20 BEAM MOUNT 1024grams with ignition and battery, first run with super oily mix 20/1 got 12.7 ibs thrust with 16 8, could not tach for some reason but it sounded very happy with this prop!. I think it may handle a bigger prop when tuned /ran in no prob!  Have not tuned this engine for performance yet. Started no problem (first gaser I ever started and was a piece of  sounds great and very responsive. Cannot comment on reliability as I just dont know yet.

Think I will get at least 13 lbs of thrust from this engine so all in not the worst. So far I am happy with this engine (had it 6 hours, so that could change!)  and should make my seagull 54 yak come alive at 9lbs all in weight,

Hide Signatures

(in reply to RCplanman)
       Post #: 1277

RE: Seagull Yak? - 5/13/2011 1:49 AM   
raydar


 

Posts: 436
Score: 142
Joined: 9/5/2009
Last Login: 6/18/2013
From: stirling, UNITED KINGDOM
Status: offline 		checked timing, seemed to be out going by the on line checks, no manufacturers specs! Set a 33 mm diameter hub to 8 .05 mm before dc for spark was at 12 mm before tdc.

will update if extra thrust is made.

Did not do thrust test but managed to tach engine at 8660 rpm with a 16 8 wooden prop and idled reliably at 1800, only 2 tanks through it, this will be a good little engine for this airframe. DLE 20 would have been better but more expensive  since hobbyking no longer has them.

< Message edited by raydar -- 5/13/2011 1:12 PM >

Hide Signatures

(in reply to raydar)
       Post #: 1278

RE: Seagull Yak? - 5/28/2011 3:20 PM   
jssull00


 

Posts: 22
Score: 100
Joined: 4/1/2006
Last Login: 6/18/2013
From: Hamilton, OH, USA
Status: offline 		Check your CA hinges, I had one break on aileron after
only 63 flights.

Hide Signatures

(in reply to raydar)
       Post #: 1279

RE: Seagull Yak? - 5/30/2011 5:18 AM   
pilotarix


 

Posts: 51
Score: 100
Joined: 5/29/2010
Last Login: 6/8/2013
From: Hummelstown, PA, USA
Status: offline 		Not only your CA hinges...

My one died a couple of days ago. While turning into the final.... not enough speed  and to much bank.

A very agressive and fast tip stall with not enough height to recover. Unfortunately the engine took a hit too,  the propellor stud and the cylinder had to be replaced. Most parts cracked direct at their glue joints.









Chris



_____________________________

TC Piper Super Cub 110'' (kit arrived)
Mentor-G +G20Ie

Hide Signatures

(in reply to jssull00)
       Post #: 1280

RE: Seagull Yak? - 6/3/2011 9:39 PM   
raydar


 

Posts: 436
Score: 142
Joined: 9/5/2009
Last Login: 6/18/2013
From: stirling, UNITED KINGDOM
Status: offline 		ten flights on mine and 3 CA hinge failures, one on a elevator half and one on each aileron halfs, check our CA hinges after every few flights

Hide Signatures

(in reply to pilotarix)
       Post #: 1281

RE: Seagull Yak? - 6/3/2011 10:29 PM   
Gehrbox



Posts: 12
Score: 100
Joined: 4/14/2011
Last Login: 6/5/2013
From: Charleston, SC, USA
Status: offline 		I wonder if life expectancy of the hinges is impacted by the use of a gas engine vs glow.

quote:

ORIGINAL: raydar

ten flights on mine and 3 CA hinge failures, one on a elevator half and one on each aileron halfs, check our CA hinges after every few flights


Hide Signatures

(in reply to raydar)
       Post #: 1282

RE: Seagull Yak? - 6/4/2011 12:04 AM   
RCplanman


 

Posts: 286
Score: 105
Joined: 7/11/2008
Last Login: 6/17/2013
From: Rochester, NY, USA
Status: offline 		raydar, did the hinge tear or pull-out of the glue joint?? Thanks, Bill

Hide Signatures

(in reply to raydar)
       Post #: 1283

RE: Seagull Yak? - 6/4/2011 7:56 PM   
raydar


 

Posts: 436
Score: 142
Joined: 9/5/2009
Last Login: 6/18/2013
From: stirling, UNITED KINGDOM
Status: offline 		It is a tear, not pulled out.

Hide Signatures

(in reply to RCplanman)
       Post #: 1284

RE: Seagull Yak? - 6/5/2011 5:34 AM   
kneewhack


 

Posts: 59
Score: 100
Joined: 12/28/2004
Last Login: 1/27/2013
From: Wasilla, AK, USA
Status: offline 		I lost 2 aileron hinges before the first flight (engine run up). Replaced those 2. Hinges on right ele half broke off during maiden flight - took the airplane home in green garbage bag. Plane was a handfull the short time it was in the air. Very disapointing.

Mike in downtown Wasilla Ak.

Hide Signatures

(in reply to raydar)
       Post #: 1285

RE: Seagull Yak? - 6/5/2011 4:11 PM   
raydar


 

Posts: 436
Score: 142
Joined: 9/5/2009
Last Login: 6/18/2013
From: stirling, UNITED KINGDOM
Status: offline 		Mine flys as it should, nice and stable for my first acro plane. I suggest replacing the CA hinges supplied with something stronger when you get this model, will save you work later.  

Hide Signatures

(in reply to kneewhack)
       Post #: 1286

RE: Seagull Yak? - 6/7/2011 3:13 PM   
V1nn1e



Posts: 37
Score: 100
Joined: 5/9/2003
Last Login: 6/12/2013
From: Guildford, UNITED KINGDOM
Status: offline 		This plane's colour scheme looks great - very tempting!

I've got the similarly sized Edge and it's getting a bit well-worn after one or three dings, plus like R3D Ryd3r, I've only got an ASP 91fs in the Edge and it's a wee bit underpowered, so this might be a nice replacement. Bit concerned about power requirements - I think I would be looking at a 90 2st but some are even suggesting that that would be marginal? But I just wonder if folks are over-proping their engines a wee bit? More revs == more power - I think that's why R3D Ryd3r may be getting enough performance from his 90fs - I've just downsized the prop on mine to a 14x4w...

Of course, noise can be a problem if revs get too high.

_____________________________

Smoke me a kipper - I'll be back for breakfast!

Hide Signatures

(in reply to RCplanman)
       Post #: 1287

RE: Seagull Yak? - 6/13/2011 3:06 AM   
jamersoniiv


 

Posts: 14
Score: 100
Joined: 1/13/2011
Last Login: 6/28/2011
From: New Carlisle, OH, USA
Status: offline 		Well finally had a little time to play with with the Yak and get it that much closer to it's maiden. Just weighed it and it's coming in at 11lb's, haven't done anything to lighten it yet, figured I'd try flying it a few times first and see how she does. Did start up the engine for the first time today (SuperTigre 2300), which shook a rudder linkage loose and vibrated the exhaust so much that it started to rotate. So some tweaks and tightening to be done and we'll try it again. Engine sounded fantastic though, haven't even run it in and leaned the mixture yet, but it still sounded cool :-D


Hide Signatures

(in reply to V1nn1e)
       Post #: 1288

RE: Seagull Yak? - 6/25/2011 3:46 AM   
WRM


 

Posts: 98
Score: 100
Joined: 7/18/2004
Last Login: 6/19/2013
From: Weatherford, TX, USA
Status: offline 		How do you keep the engine cowling from vibrating the mounting screws that hold it on from eating through the fiber glass cowling?

_____________________________

Old Myths Die Hard

Hide Signatures

(in reply to jamersoniiv)
       Post #: 1289

RE: Seagull Yak? - 6/25/2011 4:04 AM   
Gehrbox



Posts: 12
Score: 100
Joined: 4/14/2011
Last Login: 6/5/2013
From: Charleston, SC, USA
Status: offline 		Small washer behind the screw head, then a piece of fuel line between the cowl and the washer.

If you have already worn through the cowl holes, tape the outside of the hole, fill from the inside with epoxy and lay on a layer of fiberglass. redrill the holes then use the washer/fuel line tip above to keep it from happening again.


quote:

ORIGINAL: WRM

How do you keep the engine cowling from vibrating the mounting screws that hold it on from eating through the fiber glass cowling?



Hide Signatures

(in reply to WRM)
       Post #: 1290

RE: Seagull Yak? - 6/25/2011 4:40 AM   
WRM


 

Posts: 98
Score: 100
Joined: 7/18/2004
Last Login: 6/19/2013
From: Weatherford, TX, USA
Status: offline 		Do you put the fuel line on the screw are just between the cowl.

_____________________________

Old Myths Die Hard

Hide Signatures

(in reply to Gehrbox)
       Post #: 1291

RE: Seagull Yak? - 6/25/2011 4:45 AM   
Gehrbox



Posts: 12
Score: 100
Joined: 4/14/2011
Last Login: 6/5/2013
From: Charleston, SC, USA
Status: offline
quote:

ORIGINAL: WRM

Do you put the fuel line on the screw are just between the cowl.


I push the fuel line onto the screw. When tightened it keeps the screw from loosening up and chaffing through the cowl.

Hide Signatures

(in reply to WRM)
       Post #: 1292

RE: Seagull Yak? - 6/25/2011 10:16 AM   
raydar


 

Posts: 436
Score: 142
Joined: 9/5/2009
Last Login: 6/18/2013
From: stirling, UNITED KINGDOM
Status: offline 		Just a update on my experience with this plane. The info may be handy for some.

At 10lb dry I have found that my 20cc petrol with a 17 6 prop flys this plane no problem but lacks speed, a 17 8 on the plane spinning 8300rpm and the plane is a rocket so for non 3d acrobatic flight a 17 7 is prob the perfect prop. With a 17 6 spinning 8900 rpm I would not like to attempt any sort of hover as not alot of pull out left as the plane is simply to heavy for a 20cc petrol and this petrol is stronger than a quality glow 1.20 fs with 14lb static thrust, a good pilot maybe could manage some 3d with this setup and the right prop (18 4 ?).

With the asp 120 fs spinning  a 16 6 at 8400rpm the plane flew ok but had no vertical and could not manage a huge loop, no chance of 3d and really does not make this plane shine. A good quality glow 1.20 would be a good engine for basic acro flying (no knife edge loops) and for me is the minimum for reasonable performance. 

A 91 fs is hard to imagine on this model as with any flights with a prop size under 15 inch, the engine must be screaming its **** off from takeoff till landing, not saying it cant be done as im sure it will fly but your really not getting anywhere near the full potrntial out the model with this setup. This model was compaired to the seagull edge a few posts back where it was said the edge flew with the 91 fs but was lacking, well the edge is at least a pound lighter than the yak.

After saying all that engine choice really does depend on  flying style and what you want out of your model.

After the hinge fail I got robart hinges to fix, found due to being a arf there is no wood there to attach the hinges to, fitted great planes ca hinges as had them handy and needed to fly, lasted a few flights and one broken.

Bottom line is if you going with a 20cc engine or above petol or glow i think ca hinges are not up to the job due to the control surface size, regardless of make. Fitting steel pinned plastic hinges now.  

< Message edited by raydar -- 6/25/2011 11:23 AM >

Hide Signatures

(in reply to Gehrbox)
       Post #: 1293

RE: Seagull Yak? - 6/27/2011 1:05 AM   
WRM


 

Posts: 98
Score: 100
Joined: 7/18/2004
Last Login: 6/19/2013
From: Weatherford, TX, USA
Status: offline 		Thanks for the help.

_____________________________

Old Myths Die Hard

Hide Signatures

(in reply to Gehrbox)
       Post #: 1294

RE: Seagull Yak? - 6/28/2011 1:27 AM   
R3d Ryd3r



Posts: 31
Score: 100
Joined: 2/24/2005
Last Login: 3/21/2013
From: Honolulu, HI, USA
Status: offline 		Updated report on my YAK.

I have been flying the plane with a Saito 120, The  Thunder Tiger .91 was not enough to really fly the plane with any authority, I was running a 15x8 APC vortex prop.  The saito needed some "help"  I am running 15% cool power 4 cycle fuel, seems to be ok, runs reliable on that fuel, but tried some 30% heli fuel and I got a little more performance and was able to get around 200 more RPM's at full trhottle, but after the engine quit at full throttle, I switched back to 15% fuel.  If you are just looking to fly around in low wind, and not really approach any aggresive manuvers (3D?  ....uh   no)  the plane would start to slow at the top of large loops enough that it made you feel that you needed more power to make the loop symetrical, or at least keep the speed constant.  If I were to repower, I would go for a Saito 150/180 or ditch glow all together for a Gas conversion Satio FG 30. 

I am bored with this plane, it flies fine, but the lack of power makes it limited in the things you can safely approach without "reaching the point of no return"  I would love to see someone convert this thing to Electric and put a 160 size reaper, or a BIG AXI motor up front.  If you could go 20 ft on the runway and go straight up forever, then you would be able to really wring out this airframe.

_____________________________

"Father? How can I make god Laugh?"
"Have a plan my son, have a plan"

Hide Signatures

(in reply to WRM)
       Post #: 1295

RE: Seagull Yak? - 6/28/2011 1:39 AM   
Gehrbox



Posts: 12
Score: 100
Joined: 4/14/2011
Last Login: 6/5/2013
From: Charleston, SC, USA
Status: offline
quote:

If you could go 20 ft on the runway and go straight up forever, then you would be able to really wring out this airframe.


Mine has a Saito 125 using 15% cool power spinning a 16x6 Apc prop. Gets off the ground within 50ft and goes vertical until I get bored.

Hide Signatures

(in reply to R3d Ryd3r)
       Post #: 1296

RE: Seagull Yak? - 6/28/2011 1:43 AM   
R3d Ryd3r



Posts: 31
Score: 100
Joined: 2/24/2005
Last Login: 3/21/2013
From: Honolulu, HI, USA
Status: offline 		I guess I should invest in a "new" saito.  the ole 1.20 ain't what she used to be I guess.

_____________________________

"Father? How can I make god Laugh?"
"Have a plan my son, have a plan"

Hide Signatures

(in reply to Gehrbox)
       Post #: 1297

RE: Seagull Yak? - 10/6/2011 4:36 AM   
Sourkraut



Posts: 343
Score: 101
Joined: 10/1/2006
Last Login: 6/13/2013
From: Redneckville, CANADA
Status: offline 		Well, I have flown mine all summer with the Saito 180,18x6 MAS, weighing in at 9lbs 12ozs and she has performed flawlessly. Right from the maiden on, I have been impressed with this cheap little Yak. Very nice smooth aerobatics. I don't, and can't do 3D, so for my style of sport aerobatics, this is a great plane.

I am one happy camper

_____________________________

Confuscious says: Woman who flies plane upside down will have crack up!!

Hide Signatures

(in reply to R3d Ryd3r)
       Post #: 1298

RE: Seagull Yak? - 10/17/2011 4:25 PM   
nxconvict


 

Posts: 37
Score: 100
Joined: 6/29/2009
Last Login: 6/5/2013
From: West Farmington, OH, USA
Status: offline 		Agree! It is a great plane

Hide Signatures

(in reply to RCplanman)
       Post #: 1299

RE: Seagull Yak? - 10/18/2011 2:38 AM   
Slow and Steady


 

Posts: 888
Score: 105
Joined: 5/2/2009
Last Login: 6/18/2013
From: Hollywood, FL, USA
Status: offline 		Saurecraut, I agree with you, it is a great plane. I now fly an EF 50cc Yak and while they are not the same, they both fly like a Yak. It is hard to describe, but they are responsive, and react the same whether inverted or upright. I have had approximately 14 planes since I started 6 years ago and these two rate at the top, with my Funtana 125 a close number 3..

Hide Signatures

(in reply to nxconvict)
       Post #: 1300

Page:   <<   < prev  50 51 [52] 53 54 55 56 57 58 59   next >   >>  
All Forums >> RC Airplanes >> ARF or RTF >> RE: Seagull Yak?
Page: <<   < prev  50 51 [52] 53 54 55 56 57 58 59   next >   >>  




Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


1.063RCU1