RE: Edge 540 25, 45" initial review  
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All Forums >> RC Airplanes >> ARF or RTF >> NitroModels Support >> RE: Edge 540 25, 45" initial review
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RE: Edge 540 25, 45" initial review - 6/28/2007 9:51:23 PM   
BalsaBrkr


 

Posts: 18
Joined: 4/7/2006
From: Ashland, MA, USA
Status: offline 		My plane is a full 1/2 lbs heavier than yours with a lighter engine....

What size servos are you using?

Did you do anything to lighten it up?

I call it my pig plane...

(in reply to GiannisX)
       Post #: 76

RE: Edge 540 25, 45" initial review - 6/28/2007 11:10:01 PM   
GiannisX


 

Posts: 6
Joined: 6/11/2007
From: THesSaLoNiki, GREECE
Status: offline 		Hey BalsaBrkr
I forgot the muffler! 2.7 oz (76gram)
so in that way still yours is heavier :/
what do u mean full?i messured mine with empty tank. :P
I think that my 540 needs some extra epoxy somehow...
I use 5 standart airtronics servo
I modify a little the muffler ,ultra thin control rods and non metallic horns.
all servo wires have the correct length.
aluminium backplate of spinner and behind the firewall i put aluminium rusks,not this plastic s% t
I am not afraid the wheight cause this engine has enough power to lift that miammy steak.


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(in reply to BalsaBrkr)
       Post #: 77

RE: Edge 540 25, 45" initial review - 6/29/2007 1:25:26 AM   
BalsaBrkr


 

Posts: 18
Joined: 4/7/2006
From: Ashland, MA, USA
Status: offline 		Sorry, "full" is just an English expression (I can see how it would be confusing) - I weighted it without fuel too.

I used light weight control rods in the rear too.

Oh well..

I've got around 20 flights on mine now and my experience is that it is spooky with my engine until it picks up speed. One it gets moving it is very fast.

It flies good at speed, but you need to conserve energy.

I still have a 2 1/2 oz spinner nut on the end to make it balance so I could probably goto a .40 size without adding much weight.

An evolution with 5.5 lbs of thrust would certainly help overcome its current problems....

(in reply to GiannisX)
       Post #: 78

RE: Edge 540 25, 45" initial review - 7/2/2007 5:08:22 AM   
dmwelsh


 

Posts: 3
Joined: 7/2/2007
From: , AUSTRALIA
Status: offline 		Hey all, Im from Australia and I got one of these planes from E-bay. I notice that a lot of those who post on this topic are used to flying larger size planes... This is the big problem. I would say that most if not all of you have placed your huge 55-57 gram servo's into this plane. Most of these servo's are rear of CofG meaning you have placed 275 grams of weight behind the CofG. This is equivalent to a block of butter or a 2400mah lipo. This is why you are having to go and load even more weight at the front of the plane making it a PIG. Now if you use a more appropriate servo 16 gram you would have a total of 80 grams of servo weight. Meaning you have just peeled off 195 grams of weight from rear of CofG. 195 equates to about a 2000mah lipo to put it in perspective.

Now for the power requirement. I noticed that one or more people placed a .40 or .46 size motor in this tiny plane, this is also wrong wrong wrong wrong. Go with a .25 - .30 size motor and enjoy!!!

To all of you who have this sitting on the shelf not even bothering to give it a try, go with my recomendations and have some fun.

(in reply to BalsaBrkr)
       Post #: 79

RE: Edge 540 25, 45" initial review - 7/2/2007 8:55:16 AM   
GiannisX


 

Posts: 6
Joined: 6/11/2007
From: THesSaLoNiki, GREECE
Status: offline 		Hey dmwelsh
I dont know and im not sure about aileron servos,but the rudder ,throggle and elevetor servos defently must to be a standart size.
more wheight needs and means more power
the only problem with this size of motor(.46) i think is the intense vibration.
Larger propeller gives more airwave back to ur tail and make the plane more stabilized
Good luck with urs
Regards GiannisX

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(in reply to dmwelsh)
       Post #: 80

RE: Edge 540 25, 45" initial review - 7/2/2007 9:14:49 AM   
dmwelsh


 

Posts: 3
Joined: 7/2/2007
From: , AUSTRALIA
Status: offline 		Sorry GiannisX, but I do not agree with your reply. This is a small plane and if you compare its flying weight with any other similar size edge 540 you will note that it is one of the heavier models available. Given that all posts regarding this plane have had to add large amounts of nose weight to get the cg right, and that lots more have just scrapped the plane. I would say I'm right on the mark. Mine flies perfect and my 16 gram servos have more than enought power 2.5Kg/cm to power the ailerons, elevator and rudder. When you scale down a plane, you scale down not only engine power, fuel capactiy, outrunner, lipo but the servo's along with it. This particular thread is mainly asking how to get this plane to fly nice without having to add 10oz to the nose, or extending the motor out further making the plane not scale. My post explains to people how to achieve this.

(in reply to GiannisX)
       Post #: 81

RE: Edge 540 25, 45" initial review - 7/2/2007 9:29:48 AM   
GiannisX


 

Posts: 6
Joined: 6/11/2007
From: THesSaLoNiki, GREECE
Status: offline 		Hey dmwelsh
When i have to add extra wheight and how much i ll tell u.cause im not finished yet.
Why cannot fly scale with overpowered motor?its in your fingers to do that.i can change the pitch of propeller to slow down.or i can use 3bat prop. (much better)
Im just wrote my initial review of my also ebay edge.
Regards Giannis
p.s what kind of motor u use?
p.s 2 soz 4 my english

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       Post #: 82

RE: Edge 540 25, 45" initial review - 7/2/2007 9:46:18 AM   
dmwelsh


 

Posts: 3
Joined: 7/2/2007
From: , AUSTRALIA
Status: offline 		Hey GiannisX,

My only reasoning for not over powering the air craft is because it equates to more weight. If you are aiming toward a scale flying machine then stick to the recomendations, if you want to be a jet pilot then go ahead and bog the plane down with weight and give it more power to boot. I use an O.S. .25 on mine.

p.s 2 soz 4 my english (Dont quite understand what you mean here but I will assume you want a gram to oz conversion here... http://www.gourmetsleuth.com/gram_calc.htm )

For all other readers who are considering this plane as a second or third, keep the weight down as I have done and you will have slower smoother take offs and landings.


Cheers!

P.S. Just got a 52" Edge 540T. Going to slowly outfit the craft, have already looked at some Bluebird low profile metal gear servo's on Ebay and from what other info I have found on Google they seem to be really high speed good comp servo's which weigh in at 35 grams each. They have 4.5Kg/cm of torque which is more than enough for each controll surface for this size plane. This will also help keep rear CofG weight down as I will be making this baby an electric plane so motor and batteries up front will be lighter than a glow version. I will post a full build up and flight testing when I am done. Have been working on it all day and found plenty of ways to reduce weight. I think this will be a ripper.

(in reply to GiannisX)
       Post #: 83

RE: Edge 540 25, 45" initial review - 7/2/2007 9:58:59 AM   
GiannisX


 

Posts: 6
Joined: 6/11/2007
From: THesSaLoNiki, GREECE
Status: offline 		Oh sorry!
I mean sorry for my english
i use google for my numeric translations.thanx!
It will be helpfull to see ur full post.
I have take my desission after many many thoughts and questions about the engine.i have also a .25 os but noone in my country aeroforum tells me to use it instead of .46
And u came now to make me rescratch my head
Thanx

< Message edited by GiannisX -- 7/2/2007 9:59:29 AM >

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       Post #: 84

RE: Edge 540 25, 45" initial review - 7/12/2007 10:07:56 PM   
DNAer


 

Posts: 22
Joined: 1/12/2007
From: Kalamazoo, MI, USA
Status: offline 		I am supposed to get mine this Friday and am putting in a Saito .62...won't my maiden flight be interesting. At least I probably won't need to add any lead to the nose.

(in reply to GiannisX)
       Post #: 85

RE: Edge 540 25, 45" initial review - 7/16/2007 1:59:45 AM   
DNAer


 

Posts: 22
Joined: 1/12/2007
From: Kalamazoo, MI, USA
Status: offline 		Ran 6 tanks through the 540 today with the Saito .62....awesome. The plane does blindingly fast rolls and great inverted flat spins. Achilles heel are the loops. Toned down the throws and went 45% on the expo and that helped but the high wing loading makes this snap out of tight loops....large loops are fine. It really flies more like a pattern plane than an acro. Very good looking plane and took me about ten hours to build. The Saito balanced out the CG at exactly 2.75 inches...no lead neccesary.

(in reply to DNAer)
       Post #: 86

RE: Edge 540 25, 45" initial review - 7/18/2007 1:09:47 AM   
chevy43


 

Posts: 1021
Joined: 6/9/2006
From: Santa Cruz, CA, USA
Status: offline 		DNAer, What did you AUW come out to and what servo's did you use? What size prop and how well does it clear the ground?

(in reply to DNAer)
       Post #: 87

RE: Edge 540 25, 45" initial review - 7/18/2007 10:31:04 PM   
DNAer


 

Posts: 22
Joined: 1/12/2007
From: Kalamazoo, MI, USA
Status: offline 		Chevy:

AUW came in at 4lbs 15 oz...not bad considering the weight of the motor alone is 1lb 12oz. I went with Jr micro servos on all but the elevator...standard size for elevator. The micros pull 38oz at 6 volts so I felt comfortable with that considering the size of the control surfaces. I am running a 12x5 prop and ground clearance is no problem(I run on a mowed airstrip). Frankly the landing gear is flexible enough to raise the front end up another inch if you want to. This is no junior Cardin by any means but it is a fun flyer and keeps you on your toes because of the high wing loading. I just don't think it is as bad as some posters have reported. I will say that I double my elevation over the ground when I am doing anything more than level flight...this one needs extra recovery room because of the wing loading.

(in reply to chevy43)
       Post #: 88

RE: Edge 540 25, 45" initial review - 2/15/2008 2:42:04 AM   
jim gravelle


 

Posts: 2
Joined: 2/15/2008
From: mayer, MN, ANTIGUA AND BARBUDA
Status: offline 		i need the cg point for edge 540 45 inch wingspan, from the leading edge?can someone help
??????

(in reply to Nitro Dew)
       Post #: 89

RE: Edge 540 25, 45" initial review - 2/15/2008 4:14:31 AM   
opjose



Posts: 5325
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline 		Since that is a fairly straight wing, you can safely calculate the C.G.

Take 25% to 30% of the wing chord length against the fuse and use that as your target C.G. point.

Start off at the 25% point and move it back after you've flown the plane, if you want too.

Further forward and it's easier to grease the landings in, further back makes the plane more responsive ( up to a point ) but the plane will tend towards bouncing more on landings.



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Build em'', fly em'', crash em'' and build more.

(in reply to jim gravelle)
       Post #: 90