Hong Kong RC Sailplane Forum 香港滑翔機發燒友論壇

This forum is dedicated to r/c sailplane enthusiasts 此論壇專為遙控滑翔機發燒友而設
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PostPosted: 22 Dec 2008 11:02 pm 
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Joined: 12 Jan 2005 12:20 pm
Posts: 1008
Location: Shatin (Tai Wai)
Skorpion & Extreme lovers, you better have "Plan B" for your vee-tails :!:

The vee-tail of Skorpion & Extreme were based on the "self-destruction" concept :idea: That is, if under hard landings or crash, the vee-tail joiner will break by itself to miminize damage on fuse & vee-tail :o

I verified this "self-destruction" 2 times - one pcs in MOS and two pcs in Peng Hu :!:

However, finding a replacement of the vee-tail joiner is extremely difficult because the diameter is 7 mm - no any standard dimension you can find :idea: It was also tested not possible to use 8 mm hollow carbon rod to modify :?

After exhaustive search, I found a nice substitution - hollow carbon rod with 7mm outer & 6mm inner - perfectly fitting to Skorpion (and very likely good fit to Extreme as well). With this hollow carbon rod, it is possible to fill the inside at different options

a. Use "ugly" wood inside such as the original design

b. Use "epoxy / micro-ballon" - the first generation Skorpion

c. Use standard 6mm hollow carbon rod - my choice

Where to find such 7mm outer & 6mm inner hollow carbon rod :?: Still some limited stock in Dong Fong Street - it was originally made for heli shaft but already stopped in productoin :o

Feel free to stock some if you want stay long with your Skorpion / Extreme :idea: You may bring the fuse for test fit there as well :idea:


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PostPosted: 20 Jan 2009 12:48 am 
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Joined: 12 Jan 2005 12:20 pm
Posts: 1008
Location: Shatin (Tai Wai)
Tested in past few weeks of flights :o

This repair approach is reliable and robust. No problem for flying with sub-40s and the vee-tail join didn't break even with hard landings :o


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PostPosted: 20 Jan 2009 10:29 am 

Joined: 14 Sep 2007 07:10 pm
Posts: 61
阿WING, 台灣在網路上流行一句話"沒圖沒真像"呵....
POST幾張照片上來跟大家分享吧!!


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PostPosted: 20 Jan 2009 09:22 pm 
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Joined: 12 Jan 2005 12:20 pm
Posts: 1008
Location: Shatin (Tai Wai)
這是完美的修補方法 :o

對性能影響幾乎為零 :idea:

無相為証 :shock: 信者得救 :D


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PostPosted: 20 Jan 2009 11:23 pm 
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Joined: 26 Feb 2004 06:07 pm
Posts: 632
Location: Hong Kong
Image

左邊是原裝,右邊是經修復.我的方法是以 Epoxy + Micro Ballon 填滿 6mm 空心炭管.


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PostPosted: 12 Apr 2009 10:38 am 
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Joined: 29 Aug 2008 09:33 am
Posts: 67
Hi Wing,
I am looking for the 7mm carbon rod for the replacement of my Extreme, do u give me the exact address of the shop in Dong Fong street, thank.


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PostPosted: 12 Apr 2009 08:10 pm 
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Joined: 12 Jan 2005 12:20 pm
Posts: 1008
Location: Shatin (Tai Wai)
Go to Ah Kin ex-work place la :!:

Wish stock still there :idea:

信者得救 :!:


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