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
It is currently 16 Dec 2017 11:22 am

All times are UTC + 8 hours




Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: Angus' Demo
PostPosted: 15 Jun 2008 07:53 am 
User avatar

Joined: 26 Feb 2004 05:08 pm
Posts: 2944
Location: Hong Kong
:o :o :o

Image


Top
 Profile  
 
 Post subject:
PostPosted: 16 Jun 2008 07:24 pm 

Joined: 20 Jul 2004 05:14 pm
Posts: 45
Location: HK
請問有經驗人仕你哋隻Demo個CG係幾多?
同埋機頭部份(放Receiver及電嘅位置)有無需要加碳布補強呢?


Top
 Profile  
 
 Post subject:
PostPosted: 16 Jun 2008 10:20 pm 
User avatar

Joined: 03 Mar 2004 07:31 pm
Posts: 1023
8)

I have 2 demo. Both of them flies at 96 to 97 mm from leading edge.

None of them have reinforcement at the inner cone.

Just a little cent from me. You might make reinforcement if you like. The weight increase won't make much difference. for the CG, starting from 96, and adjust it during test fight to suit your habit.


Top
 Profile  
 
 Post subject:
PostPosted: 16 Jun 2008 11:21 pm 

Joined: 20 Jul 2004 05:14 pm
Posts: 45
Location: HK
[quote="Ah Pong"]8)

I have 2 demo. Both of them flies at 96 to 97 mm from leading edge.

Ah Pong, thanks for sharing your experience, I just check the center position of ballast tube, it shows 112mm backward from leading edge, that means load or unload ballast will carry a different CG if I use 96mm.


Top
 Profile  
 
 Post subject:
PostPosted: 17 Jun 2008 01:54 pm 
User avatar

Joined: 03 Mar 2004 07:31 pm
Posts: 1023
Hi Billy,

Do you find the tube is longer than the total length of the ballast??

What I have done is putting a 16mm spacer (foam or balsa could do) at the end of the tube (tail section). By then, the middle of the tube is exactly 96 mm from the leading edge, i.e., the sweet spot.

By the way, you may wish starting from 200 g of lead at the nose. Won't be far away from the correct CG.

Wishing you have a happy maiden.

Pong Pong.


Top
 Profile  
 
 Post subject:
PostPosted: 17 Jun 2008 04:24 pm 
User avatar

Joined: 26 Feb 2004 05:08 pm
Posts: 2944
Location: Hong Kong
Hi Billy,

Following you can find some setting data about the Demo:

http://www.rc-network.de/forum/showthre ... light=Demo


Top
 Profile  
 
 Post subject:
PostPosted: 17 Jun 2008 06:27 pm 

Joined: 20 Jul 2004 05:14 pm
Posts: 45
Location: HK
I have got some useful informations, thanks everybody to help. Let me start to build... :D


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC + 8 hours


Who is online

Users browsing this forum: No registered users and 6 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

RCSAIL Home

WindGURU at Ma On Shan, Clearwater Bay and Fei Ngo Shan

Powered by phpBB® Forum Software © phpBB Group