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PostPosted: 07 Jul 2004 12:27 am 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
After a few months of DIY projects using coroplast & Styrofoam. My friend and I started to work on Blue Foam, Pink Foam and Fibreglass project. Hopefully, our first DIY slope racer will be born soon. 8)


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PostPosted: 13 Aug 2004 10:21 am 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong


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 Post subject: DIY glider
PostPosted: 13 Aug 2004 10:26 am 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
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PostPosted: 13 Aug 2004 04:54 pm 

Joined: 20 Jul 2004 05:14 pm
Posts: 45
Location: HK
我好似見個你隻机試飛,係唔係上個禮拜六清水灣個隻,不過好似無黃色隻翼.咁試飛試成黠呀?


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PostPosted: 13 Aug 2004 10:47 pm 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
Yes, I modified the wing and see if it could fly better in light wind condition.


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 Post subject: BD5J
PostPosted: 18 Aug 2004 02:50 pm 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong


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 Post subject: pic
PostPosted: 18 Aug 2004 03:27 pm 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
http://www.hk-aviation.com/non-cgi/usr/25/25_86.jpg


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PostPosted: 18 Aug 2004 03:28 pm 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
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 Post subject: Fuselage for mold making
PostPosted: 29 Oct 2004 12:30 am 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
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 Post subject: flat wing platform
PostPosted: 06 Nov 2004 06:58 pm 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
[img]http://www.hk-aviation.com/non-cgi/usr/25/25_105_8.jpg

Anyone have any ideas on the performance of a flat platform wing? My meaning is - most slope racer left & right main wing joined together at a angle, maybe 170 degree. What will happen if I use MG06 airfoil with no angle at all. Hopefully you know what i mean.[/img]


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PostPosted: 06 Nov 2004 07:00 pm 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
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 Post subject:
PostPosted: 07 Nov 2004 02:51 am 
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Joined: 26 Feb 2004 05:08 pm
Posts: 2944
Location: Hong Kong
Dihedral is necessary for planes that use rudder for turning. If your plane is aileron equipped, dihedral can be set to 0 degree (flat wing). Dihedral adds lateral stability but also yaw-roll coupling (plane rolls when only rudder is applied). So pure aerobatic planes have zero dihedral. Other "not-so-aerobatic" aileron equipped planes usually have a few degrees of dihedral for lateral stability, while rudder only planes need very large (>7) dihedral for turning.

Good luck :wink:


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PostPosted: 07 Nov 2004 06:45 pm 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
Dear CM,

Thank you so much for the info. Very educational for beginner builder like me.


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