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Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 4/23/2005 2:01:41 AM   
pgitta


 

Posts: 218
Joined: 1/2/2004
From: , IL, USA
Status: offline 		Added different formats of the SE5A so anyone like me searching would have better luck finding info.

So I'm posting my progress on a build/modification on the Dynaflite SE5A in case anyone's interested. This is a pretty good kit value in my opinion, but I feel it needs some changes to make it right.

First of all, that wing needs to come down.

And the incidences are all wrong. I sure they are the reason for the tail down squatty flight and the torn out rudders people have complained about. Took a shot of the plans and you can see the incidence for the wings are 1 degree and 0 for the stab.

The real thing is 5 degrees for everything! So that's what I'll do...if I can.



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_____________________________

Electric airplanes are great, but my extension cord keeps getting caught in the trees.
       Post #: 1

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 4/23/2005 2:05:17 AM   
pgitta


 

Posts: 218
Joined: 1/2/2004
From: , IL, USA
Status: offline 		I've included a few shots of my twisted techniques. I'm a woodworker, so I'm cheating with the power tools!

I like to set my angle finder on the plan, transfer it to the piece I want to cut, move to the disc sander, dial in that angle in the miter guage, and sand down to the line.

You have to be careful cause the disc sander melts away balsa like a hot knife through butter, but the ends are oh so nice and square.

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_____________________________

Electric airplanes are great, but my extension cord keeps getting caught in the trees.

(in reply to pgitta)
       Post #: 2

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 4/28/2005 7:48:01 PM   
Prop Nut



Posts: 1558
Joined: 5/4/2004
From: Coral, MI, USA
Status: offline 		Keep it going, we want to see more.

_____________________________

Scope? Listerine? Or Prop Wash?

(in reply to pgitta)
       Post #: 3

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 5/26/2005 9:44:35 PM   
harve202



Posts: 63
Joined: 8/5/2003
From: windsor nc, NC, USA
Status: offline 		IMHO scarcity of responses to this thread is directly proportional to understanding this kit to be discontinued. Imagine surprise at finding it to be again available from Tower, other nhs not known. Perhaps business will pick up all around. I've got one on the way and will be ready to start in a few. Howsa boudit, yall.

(in reply to Prop Nut)
       Post #: 4

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 6/2/2005 6:50:18 PM   
harve202



Posts: 63
Joined: 8/5/2003
From: windsor nc, NC, USA
Status: offline 		First Impression=That's a BIG box of Balsa. Don't take anything out, you'll never get it all back in. Step-by-step instructions. Far cry from " build-wing, build-fuse, install- radio" stuff we cut our teeth on. Good bang for buck.
I'm in 'studying mode' and was wondering how/when to incorporate comments made in interest or greater scale compliance in build.
IMHO comments cluster around 1)Wing incidence angles 2)wing-fuse gap 3)UC( i know , too many design plans from UK)design and 4)lack of flying wires and/or other details. Assuming I'm correct, where do/did you start modifications from their directions/plans etc.?
You guys started it so help me out here. I'm finishing a Sig J-3, qs with a Magnum 1.60 two cylinder and think I needed smaller (LOL) project to fuel CA fix.

(in reply to harve202)
       Post #: 5

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 6/2/2005 7:00:28 PM   
CRFlyer



Posts: 306
Joined: 9/24/2002
From: Cedar Rapids, IA, USA
Status: offline 		I have not started my se5a yet. I have it planned mostly as next winters project at this time. My plans for modifications at this time are to 1. decrease the distance between the top and bottom wings and 2. to Add some flying wires.

I am interested in hearing how the building progress is going from anyone working on this kit.

harve202: Your right, it is a big box of balsa, but not any bigger than any other kit of this size.

(in reply to harve202)
       Post #: 6

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 6/2/2005 8:44:47 PM   
jstanton



Posts: 1897
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		I have built this kit and she is a great flyer. Very stable and slow. I have powered it with a Magnum 91 4 stroke with a APC 14x6 prop. Flys around very scale like. I am going to try a APC and Zinger 15x4 props this weekend. I did have trouble with the tail gear tearing out. I have reinforced the tail section with some screws and 30 minute epoxy. Here is a picture of the plane finished. The engine in the picture did not work out very well and I changed it out to my Magnum 91 4 stoke. Oh! you will find a problem with the engines muffler not coming out the bottom of the cowling if you install a 4 stroke engine according to plans. I have talked this over with others here and we all have run the muffler out the side of the cowling. Does not look bad and it works.

Thanks

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Jim Stanton
Millington, TN 38053

(in reply to CRFlyer)
       Post #: 7

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 6/3/2005 8:57:08 PM   
harve202



Posts: 63
Joined: 8/5/2003
From: windsor nc, NC, USA
Status: offline 		Great pic's. Two questions. Did you put four aileron s's in your wings or did you use two with links, upper or below? Was most of the build stock to their plans?

(in reply to jstanton)
       Post #: 8

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 6/3/2005 9:44:24 PM   
jstanton



Posts: 1897
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		I used two GWS high torque servo's(111 oz. at 6 volts) in the wing for the ailerons and then used some 4/40 threaded rods with medal clevis to connect the ailerons together. I used GWS high torque servo's on the rudder and elevator also. I am using only 5 servos and the plane flys real scale like with a Magnum 91 RFS 4 stroke engine and a APC 14x6 prop. I did this to cut down on the weight and it works very well. My total dry weight is 10lbs. That is at its low end on the weight scale. With a wing area of 1440 sq in. this plane fly very slow and stable. You almost have to force it to land. Make sure you beef up the tail section if you fly on a grass field. Because it well tear out on landings. You will not have this trouble on any type of paved runway.

Good luck and enjoy your SE-5a

_____________________________

Jim Stanton
Millington, TN 38053

(in reply to harve202)
       Post #: 9

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 6/4/2005 8:29:49 PM   
jstanton



Posts: 1897
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		I built the plane stock as per plans. The servo's are mounted in the lower wing.

I just got back from the field and if you plan on using a 91 4 stroke in the plane you will find it flys very scale like. I found a APC 15x4 prop will give you the most thrust. I have tried several 14x6 props only to find they just fly the plan around and if you want to do a simple loop with a 14x6 prop you will have to go into a dive to pick up speed and pull up from there. With a APC 15x4 on a Magnum 91 4 stroke running 15% fuel it gives you enough thrust do do a loop from leave flight and still flys very scale like.

Hope this helps

_____________________________

Jim Stanton
Millington, TN 38053

(in reply to harve202)
       Post #: 10

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 6/6/2005 7:24:32 PM   
harve202



Posts: 63
Joined: 8/5/2003
From: windsor nc, NC, USA
Status: offline 		Thinking of a Saito91 that I didn't use on another project. and 15 x 4 will be no problem. Any comments about lowering upper wing? Anyone lowering the side nose profile by changing bulkhead heights?

(in reply to jstanton)
       Post #: 11

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 6/6/2005 7:32:26 PM   
jstanton



Posts: 1897
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		Harve

I think you'll find you'll have a little more power with the Saito 91s. I have both engines and I find my Saito to be a more powerful engine. I think you my even be able to use a 15x6 APC prop with the Saito. It should give you more airspeed than my Magnum 91. I plan on using my Saito 91s in a FunAero Albatross. That would give both my 91's a good home and somone to play with.

I built my Dyanfilte according to plan so I am sorry I cannot help you with lowering the top wing. I know it would be more to scale, but it is just a fun scale airplane and mine flys like a dream. Hope you have lots of air time with yours.

Thanks

_____________________________

Jim Stanton
Millington, TN 38053

(in reply to harve202)
       Post #: 12

RE: Dynaflite SE5A / S.E. 5A / SE-5 / SE-5A / Build - 6/17/2005 4:52:08 PM   
harve202



Posts: 63
Joined: 8/5/2003
From: windsor nc, NC, USA
Status: offline 		Where did evrybuddy go? Pgitta, whassup? Guess it's too hot...

(in reply to jstanton)