RC Slope Soaring in Hong Kong
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Home made DLG by Pong Pong
http://www.rcsail.com/forum/viewtopic.php?f=15&t=1773		 Page 1 of 1
Author:  Ah Pong [ Thu Feb 04, 2010 11:23 pm ]
Post subject:  Home made DLG by Pong Pong
Just finished the fuselage today, will make the boom soon.

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8) 8)
Author:  Ah Pong [ Thu Feb 04, 2010 11:24 pm ]
Post subject: 
8)

The canopy :

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8) 8)
Author:  Ah Pong [ Thu Feb 04, 2010 11:25 pm ]
Post subject: 
Hi folks,

Here is my vacumum bagged tail. Only 5.4 gram with live hinge.

Thanks for Ah MAK lending the vacumum pump to me.

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8) 8)
Author:  Ah Pong [ Thu Feb 04, 2010 11:25 pm ]
Post subject: 
Dear all,

I finally make the boom today after the finish of the fuse 5 months ago.

Step 1:

Make some tools for rolling the video tape. A tapered wooden pole, and a stand

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Modify a servo (make it turns like a motor) and put a switch on it. Also put a servo disc on the wooden pole.

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Make a video tape dispenser for even pressure applies on the pole.

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Step 2:

Wrapping the pole with video tape.

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Step 3:

Cut the uni-carbon into size I need.

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Step 4:

Wet out the frabic.

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Step 5:

Put several layers of frabic together and roll them on the pole (No picture this time, as to my messy hands).

Step 6:

Put the pole on the motor set, and repeat step 2. This makes the video tape wrapping the carbon frabic and squeesing all the air and excessive epoxy (no picture again. Messy hands)

Step 7:

Soak the excessive epoxy away every 5 minutes.

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Step 8:

Wait for the epoxy sets.

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Step 9:

Removing the outter layer of video tape. The boom seems OK.

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Will update later.

:P :P
Author:  Ah Pong [ Thu Feb 04, 2010 11:26 pm ]
Post subject: 
Hi folks,

The first boom I made was a bit heavy as I have used 6oz Uni-CF.

Having gotten some 3oz uni-CF, and some 1K CF, and finally made a light boom (this is the 3rd attemp):

Fitted to the fuse:
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I think it looks better if the 1k CF is at the outter side :

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15.5g (boom only) is not too bad, right ?
How do you guys think ?
Author:  Ah Pong [ Thu Feb 04, 2010 11:26 pm ]
Post subject: 
Hi folks,

My vacaum bump is done and working fine:

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8) 8)
Author:  Ah Pong [ Thu Feb 04, 2010 11:29 pm ]
Post subject: 
Making the wings:

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8)
Author:  Ah Pong [ Thu Feb 04, 2010 11:30 pm ]
Post subject: 
The cutting bow:

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8) 8)
Author:  Ah Pong [ Thu Feb 04, 2010 11:31 pm ]
Post subject: 
The 'Feather cut' ruler:

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:lol: :lol:
Author:  Ah Pong [ Thu Feb 04, 2010 11:32 pm ]
Post subject: 
The product :

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:lol: :lol:
Author:  Ah Pong [ Thu Feb 04, 2010 11:33 pm ]
Post subject: 
I have two pairs of wings now:

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:P :P
Author:  Ah Pong [ Thu Feb 04, 2010 11:38 pm ]
Post subject: 
Live hinged parts:

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:P :P
Author:  Alex SO [ Fri Feb 05, 2010 12:00 am ]
Post subject: 
Pong Pong! You so excellent! :shock:
Author:  CM Cheng [ Fri Feb 05, 2010 9:15 am ]
Post subject: 
Hello Pong-pong. What is the material you used to make the templates?
Author:  K.Y.Mak [ Fri Feb 05, 2010 9:48 am ]
Post subject: 
Ah Pong,

That's a very nice wing core :!: :D

Did you let the hotwire bow run by itself ?
Author:  Ah Pong [ Fri Feb 05, 2010 10:32 am ]
Post subject: 
Hi CM,

The templates were made with aluminium (1mm thickness).

Ah Mak,

The bow just like my son, need guidance and coaching. :lol: :lol:

BR,
Author:  Ah Pong [ Sat Feb 06, 2010 3:21 pm ]
Post subject: 
8) 8)

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2 oz glass at the leading edge,

6 oz of Uni-carbon as spar

3 oz peel ply as hinge

The skin is also 2 oz glass (already placed on the maylor)

8) 8)
Author:  Ah Pong [ Fri Feb 12, 2010 5:32 pm ]
Post subject: 
Hi folks,

The wings are done.
(the fuse is still my old long-shot)

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:P :P [/img]
Author:  CM Cheng [ Wed Feb 17, 2010 11:31 am ]
Post subject: 
Why not taper the spars. Wing tip carries less load then the center :twisted:
Author:  Ah Pong [ Thu Feb 18, 2010 12:56 am ]
Post subject: 
Hi CM,

Your statement is right during normal flight time.

However, the tip have to bear a huge amount of load during launch. To be safe, I'd rather make it stronger.

P.S. I may be wrong.
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