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Seagull Edge 540 (120 Size)

Old 08-24-2004, 09:05 PM
  #1  
ukrconsul
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Default Seagull Edge 540 (120 Size)

I finally bought this one, Seagull Edge 540-120. I will know everything about this plane soon.
By now I can say I have mixed feeling about this plane. I took it for $250 US and it was the only one in the area I am living now that I could buy without hurting my filling (I hate that feeling when you robbed by some LHS, and I don’t like to look stupid).

The plane looks great but has some issues that could be fixed without a problem.

The plane itself weights 4600g. + 1200g for MVVS 1.6 Engine and 450g for electronics so total will be 6300 g or 13.8 lb. The plane has awfully heavy landing gear 400g (~ 3-4 mm) and together with included cheap aluminum engine mount it comes to 550g. I will probably have to by some carbon replacement for the undercarriage and Du-Bro plastic mount. With such modifications the plane will be around 5800g or 12.8lb.

The wing is tube-type and when fitted to the plane left a 8 mm gap to fuselage – will be fixed by 4 mm balsa sheets on each side.
The plane is hot-glued so I used CA all over where I was able to get with my hand.
Construction looks OK.

Supplied hardware is a total junk and has a sign on the bag kinda – “proudly made in Vietnam”. Tail wheel has a sign “Phoenix Models”. Half of it cam be used probably. Fuel tank has plastic pipes (will be replaced).

The distance between firewall and cowl end is around 140 mm so only MVVS 1.6 will fit. Bigger - longer engine will require moving the firewall back.

I have measured also the wing area (with tail) and it seems to be around 6951 sm2 or 69.9 dm2 or 1112.16 inch2 despite that on the box this figure is around 1000 inch2.
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Old 08-24-2004, 09:07 PM
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ukrconsul
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Default RE: Seagull Edge 540 (120 Size)

Some more images.
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Old 08-24-2004, 09:07 PM
  #3  
ukrconsul
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Default RE: Seagull Edge 540 (120 Size)

One more
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Old 08-24-2004, 09:14 PM
  #4  
ukrconsul
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Default RE: Seagull Edge 540 (120 Size)

The airfoil is strange it seems that it is not curved enough at least at the leading edge.
The tail wheel assembly doesn't fit properly and has to be replaced. It will not fit as it has to be - aligned with radder hinge line.
The most interesting fact about it is that in the manual there are no words at all about the tail installation but there is a tail photograph. The radder and tail wheel will be locked permanently together is you follow that recommendation (tail wheel assembly placed 40 mm forward from the hinge line). I have to scan probably it but it does not worth to talk about. Did they try to move that rudder at the time they were taking the picture in Vietnam? It is absolutely gorgeous.

I would like also to correct my remarks above about landing gear - it is 5 mm (not 3-4 mm).
Yesterday I was unfortunate enough to look through the servo cuttings into the wing from inside. All two ribs that are visible where trashed. I could only imagine what is inside the whole wing. I am not surprised now that there are a lot of post about the smaller Edge 540 (60 size) wing failure - folding. they made the fuselage quite good, but the wing is a different story - it can not be checked after covering applied - so they do it bad. i'll try it as is - i do not want to strip it and recover. I'll take my chances.
Here some photos - MVVS 1.6 gas engine and tank installations. Violet tube over the tank (the kit tank is replaced by Du-Bro, square, 16 oz) is added to hold it in place. Engine offset will be added after first flights testing.
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Old 09-02-2004, 11:53 PM
  #5  
Eyeguy
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Default RE: Seagull Edge 540 (120 Size)

Nice job - lots of great info here ! Keep it coming ! ! How does it fly ? I have not started mine yet - other issues to deal with first (home renovations) and still waiting for the engine from Tower hobbies.
Old 09-03-2004, 04:57 AM
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Default RE: Seagull Edge 540 (120 Size)

I will test engine this weekend and fly next I hope.
Old 09-06-2004, 10:04 PM
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Cyberwolf
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Default RE: Seagull Edge 540 (120 Size)

All I can say is this I hope its flys better than the 60-90 sized ,I was more than disspleased with mine .Glad that its matchsticks.
Old 09-14-2004, 01:49 AM
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Default RE: Seagull Edge 540 (120 Size)

Just found this review for Graupner Extra:
http://www.rcuniverse.com/magazine/a...article_id=364
I would bet this Graupner plane came from the same Seagull factory!
Construction and material are absolutely identical to my Edge.
Old 09-14-2004, 06:48 PM
  #9  
mkranitz
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Default RE: Seagull Edge 540 (120 Size)

Hey, nice review. If you don't mind, I would like to feature your review in our Product Guide so more guys can see it. Click the "Editors" link atop any page and go from there!

Michael
Old 09-24-2004, 10:09 PM
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ukrconsul
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Default RE: Seagull Edge 540 (120 Size)

Unfortunately I have to say that this review will have an unfortunate end.
The plane crushed. When I found the plane after 5 hours of search she was robbed completely. Edge survived the impact bur was striped and completely trashed by robbers. Left nothing, but small pieces.

There is a list of missing parts below. If somebody see some of parts on e-bay
(selling from Singapore or Malaysia ) let me know. I will nail the bad guys.

- MVVS 1.6 (26cc) engine with Vlash ignition;
- Hitec 5945MG servos (5, ver 1.03);
- JR 517 servo;
- JR reciver (700 series, 72 Mhz, 35 ch);
- JR 600 and 1100mah batteries.
This is happened in Singapore near Tuas area on 18 September 2004 (not far from cash card booth). Probably soma Malaysian bikers returning to Malaysia from Singapore after work in the evening have seen the crush.

But I still have to say final words.
So here the last pictures that I took last night before the final flight.
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Old 09-24-2004, 10:11 PM
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ukrconsul
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Default RE: Seagull Edge 540 (120 Size)

I made some inserts from 4 mm balsa for wings to eliminate the fuselage gap.
I had 5 Hitec digital 5945Mg servos on all surfaces and JR517 on throttle.
600 mah 4.8v battery for radio and 1100 mah for ignition.
MVVS 1.6 engine had 2 hours running time and was ready to go.
Propeller - MA 16x8, RPM 8000. Total weight was a little less then 14 pounds (on my 10 $ floor scale).
According to manual CG has supposed to be 120 mm from the leading edge. I saw a few posts about this plane saying that CG has to be 60 mm and it flew well with it. From the shape of the wing I think that CG has to be near 80-90 mm. So I made it 80mm. All surfaces travel as per manual for low rates, exponential 30%.
Last Saturday I took her of. From the first moment it was obvious that the plane is too heavy. She didn’t accelerate well on take of. But I took off anyway.
From the first moment of flight it was a battle for survival. Plane was to heavy to climb and CG was to far forward. Small prop didn’t help either. I knew that prop is small and it had to be 18x8 but I wanted to fly her anyway that day. Any attempt to turn the plane followed by lost altitude. So I was turning slow making the big circle. Finally I managed to turn her toward to the field but unfortunately went behind the bunch of tall trees. I chopped throttle and that was all.
The plane went into the bush and was too hard to find. Wen I managed to find her not too much left after the bad guys.

So, not a happy story. At least a can say that even with 18x8 prop and carbon fiber landing gear this plane will not fly as aerobatic plane, barely as a sport plane and MVVS 1.6 is nice but not an engine for 14 lb plane.
As per construction – it is nice covered but it left me with feeling that something not right.
Old 09-24-2004, 10:15 PM
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Default RE: Seagull Edge 540 (120 Size)

Here tha last emage
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Old 09-24-2004, 10:58 PM
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Eyeguy
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Default RE: Seagull Edge 540 (120 Size)

I am sorry to read about your loss. Better luck next time ! ! I will do some serious cg calculations before flying mine - there seems to be something wrong here. Finally did get the Super Tigre 3250 - it seems a nice engine.
Old 10-20-2004, 09:23 PM
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Default RE: Seagull Edge 540 (120 Size)

A little bit late but I've got an idea to check the CG on Hangar 9 25% Edge 540 as they are almost the same.
On Hangar 9 it is 112.5 mm - 137.5 mm.
I have to admit that I was wrong with my suggestion when I made it 80mm.
The manual figure for Seagull Edge 120 is 120 mm - probably right.
Old 02-19-2005, 10:38 AM
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Default RE: Seagull Edge 540 (120 Size)

i picked up the seagull edge for $150 australian (do the math. i got it from where i work and it fell off the roof and landed on the floor breakin the tail plane, this will be my first fully aerobatic plane and your comments scare me into sticking with my low wing sport plane. im lookin at the mvvs 145, what you lot recon of that power for this plane???
Old 02-20-2005, 04:36 AM
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Default RE: Seagull Edge 540 (120 Size)

another thing tha tmade me wondert about thgis plane is what is under my wing covering, thus i am thinking about pullin it off and having a nice long inspection on the structure. plus i think that the covering scheme was a little ordinary and common. this is the first plane that i have ever bought as i have always religiously designd and built my own, so i have nol idea what to expect from the half damaged aerobat
Old 02-20-2005, 03:24 PM
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Default RE: Seagull Edge 540 (120 Size)


Sorry to read about your bad luck with the Edge.

A club colleague bought the same model about 18 months ago and also fitted it with an MVVS 1.60.

It was commented on at the time that the firewall did not appear sturdy enough to support the 1.60 which is a pretty hefty lump. Only 2 vertical triangular strips were glued inside the firewall and the general consensus was that this area needed much more substantial reinforcement - especially in the event of a hard landing!

That particular model crashed due to problems with the engine but the owner/flyer had significantly reinforced the firewall area mentioned beforehand!
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Old 02-20-2005, 09:33 PM
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Default RE: Seagull Edge 540 (120 Size)

Sorry about your loss, that blows *****. [] Hope you'll catch them. It looks a lot like the H9 27% Edge, and it probably will fly just as well. (I have the H9 and it is awesome!)
Old 03-05-2005, 03:37 AM
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Default RE: Seagull Edge 540 (120 Size)

this is the rudder design i am going to use to try and shed some pounds
Old 04-25-2005, 04:13 AM
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Default RE: Seagull Edge 540 (120 Size)

hi nice review sorry about the problems you had with your test flight
i have recently bought an edge 540 120 size
now this has an os gemini 240 four stroke motor that has been converted to petrol i have not flown this plane yet but the previous owner has and he says it is ballistic but as mentioned in the thread the is no significant strengthening on the fire wall or engine mount
except for some fibre glass cloth and resin inside the engine mount
the plane seems heavy i have re mounted the tank in a central position and the ignition battery and rx battery are in the tail
also according to the manual the c of g should be 11-12 cm back from the leading edge of the wing measured at the tip although it does not say what the all up weight should be mine is in the region of 14lb
does the gap between the wing and the fus need to be filled?
so it is tight to the fus
any comments welcome
Old 03-10-2006, 05:48 AM
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Default RE: Seagull Edge 540 (120 Size)

I have just recieved the new version of this aircraft.

It looks great! It now has bolt on single wings (so no gap), very tidy bolt on tail, and all the wood and joint seem to be spot on! The hardware pack seems to be good enough for the job also.

It really does seem as if they have removed all the problems that people had with the first model.

It only cost me ÂŁ151 fully delivered, which is very impressive for what you get.

Ive just got an Evolution GT26 gas engine to go in this.

I'll let you know how I get on with it. Does anyone else have the new version?
Old 03-10-2006, 05:59 AM
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Default RE: Seagull Edge 540 (120 Size)

Forgot to say, you now need 2 servos on each wing for ailerons.
Old 03-17-2006, 02:41 PM
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Default RE: Seagull Edge 540 (120 Size)

Mine looks as if its coming out at a weight of 10.5 lb
Old 02-17-2008, 11:12 AM
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Default RE: Seagull Edge 540 (120 Size)

Just started building mine. I like the servo reposition for the engine contral on your pic.
A/ Did you do it because it needed weight up front?
B/ Did you bother to use a digital servo for the throttle? whats the use of all that power with the digital just tot move a throttle quadrant?
C/ Mine had two left handed trim decals for the wheel spats, wonder what others have done.
Old 02-17-2008, 12:48 PM
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Default RE: Seagull Edge 540 (120 Size)

How did your Edge fly. See the mention that you had the later kit but didnt get to any flying reports. Ive just started one and am using an OS1.6FS
I would be very interested in knowing how your build and flights went.

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