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Home made DLG by Pong Pong
http://www.rcsail.com/forum/viewtopic.php?f=15&t=1773
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Author:  Ah Pong [ 04 Feb 2010 11:23 pm ]
Post subject:  Home made DLG by Pong Pong

Just finished the fuselage today, will make the boom soon.

Image

Image

8) 8)

Author:  Ah Pong [ 04 Feb 2010 11:24 pm ]
Post subject: 

8)

The canopy :

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8) 8)

Author:  Ah Pong [ 04 Feb 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.

Image

8) 8)

Author:  Ah Pong [ 04 Feb 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 [ 04 Feb 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 :

Image

15.5g (boom only) is not too bad, right ?
How do you guys think ?

Author:  Ah Pong [ 04 Feb 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 [ 04 Feb 2010 11:29 pm ]
Post subject: 

Making the wings:

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8)

Author:  Ah Pong [ 04 Feb 2010 11:30 pm ]
Post subject: 

The cutting bow:

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8) 8)

Author:  Ah Pong [ 04 Feb 2010 11:31 pm ]
Post subject: 

The 'Feather cut' ruler:

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:lol: :lol:

Author:  Ah Pong [ 04 Feb 2010 11:32 pm ]
Post subject: 

The product :

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:lol: :lol:

Author:  Ah Pong [ 04 Feb 2010 11:33 pm ]
Post subject: 

I have two pairs of wings now:

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:P :P

Author:  Ah Pong [ 04 Feb 2010 11:38 pm ]
Post subject: 

Live hinged parts:

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:P :P

Author:  Alex SO [ 05 Feb 2010 12:00 am ]
Post subject: 

Pong Pong! You so excellent! :shock:

Author:  CM Cheng [ 05 Feb 2010 09:15 am ]
Post subject: 

Hello Pong-pong. What is the material you used to make the templates?

Author:  K.Y.Mak [ 05 Feb 2010 09:48 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 [ 05 Feb 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 [ 06 Feb 2010 03:21 pm ]
Post subject: 

8) 8)

Image

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 [ 12 Feb 2010 05:32 pm ]
Post subject: 

Hi folks,

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

Image

:P :P [/img]

Author:  CM Cheng [ 17 Feb 2010 11:31 am ]
Post subject: 

Why not taper the spars. Wing tip carries less load then the center :twisted:

Author:  Ah Pong [ 18 Feb 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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