Thorp Air Command - T18.net

Supporting Owners, Builders and Pilots of the Thorp T-18 and its variants.
It is currently Sat Dec 21, 2024 9:49 pm

View unanswered posts | View active topics


Board index » Thorp T-18 » Projects

All times are UTC - 6 hours [ DST ]



Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 
  Print view Previous topic | Next topic 
Author Message
dcuke
 Post subject: CG limits
PostPosted: Fri Apr 13, 2012 3:13 pm 
Jr. Member
Jr. Member

Joined: Sat Oct 30, 2010 7:59 pm
Posts: 95
Location: Visalia, California
I have my weight and balance done, but still need to calculate the full forward and full aft cg limits. Can anyone steer me in the right direction to get this finished up?

_________________
Dean Cuke
Visalia, California
N772DM
KVIS
Top
 Profile  
 
Rich Brazell
 Post subject: Re: CG limits
PostPosted: Fri Apr 13, 2012 4:27 pm 
Hero Member
Hero Member

Joined: Wed Oct 21, 2009 12:33 pm
Posts: 3108
Images: 64
Location: Jamul, CA (San Diego area)
Dan: Can you help Dean out ! Same airport ? I have JT's weight and balance page somewhere ? It is in the old NL's.


RB
Top
 Profile Personal album  
 
dcuke
 Post subject: Re: CG limits
PostPosted: Fri Apr 13, 2012 5:13 pm 
Jr. Member
Jr. Member

Joined: Sat Oct 30, 2010 7:59 pm
Posts: 95
Location: Visalia, California
I found some posts from the EAA that are recommended from the FAA in figuring out forward & CG limits, but i want to make sure that I am starting with the right CG empty weight.

My empty weight CG for the T18 (with oil) is 62.77. Does this sound about right or will I need to do some shifting?

_________________
Dean Cuke
Visalia, California
N772DM
KVIS
Top
 Profile  
 
Rich Brazell
 Post subject: Re: CG limits
PostPosted: Fri Apr 13, 2012 5:44 pm 
Hero Member
Hero Member

Joined: Wed Oct 21, 2009 12:33 pm
Posts: 3108
Images: 64
Location: Jamul, CA (San Diego area)
Dean: Go to "search" and type in JT weight and balance. 62.5-71.0. NL 136 has JT's weight and balance info. BADA BING, BADA BOOM !

RB
Top
 Profile Personal album  
 
James Grahn
 Post subject: Re: CG limits
PostPosted: Fri Apr 13, 2012 5:51 pm 
Hero Member
Hero Member

Joined: Sat Oct 24, 2009 7:16 pm
Posts: 1462
Images: 0
Location: USA
Dean,
Its in the ballpark. You need to define your datum for an exact reply. The CG range is 15% to 32% MAC. (depending on who you talk to - 16% to 30% are also listed) . The wing leading edge is station 55, trailing edge is 105. So, given you are using the same datum as per plans, 62.77 is 15.5% MAC. When you sit in it, the CG will move aft.
Cubes
Top
 Profile Personal album  
 
dcuke
 Post subject: Re: CG limits
PostPosted: Fri Apr 13, 2012 5:54 pm 
Jr. Member
Jr. Member

Joined: Sat Oct 30, 2010 7:59 pm
Posts: 95
Location: Visalia, California
Thanks Rich, that's exactly what I was looking for.

@James - my datum is configured 55" at the leading edge. Looks like everything is good

_________________
Dean Cuke
Visalia, California
N772DM
KVIS
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 

Board index » Thorp T-18 » Projects

All times are UTC - 6 hours [ DST ]

Who is online

Users browsing this forum: No registered users and 13 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:  

[ Time : 0.171s | 10 Queries | GZIP : On ]