4 * 40 kit

Reply Subscribe

Thread Tools

Search this Thread

04-01-2004, 04:02 PM

Gary W. Lindner

Member

Thread Starter

My Feedback: (1)

Join Date: Dec 2002

Location: Lenoir City, TN

Posts: 37

Likes: 0

Received 0 Likes on 0 Posts

4 * 40 kit

What is the recommended balance point from the L E ?

Reply Like

04-01-2004, 04:16 PM

JNorton

My Feedback: (2)

Join Date: Jan 2002

Location: Coopersville, MI

Posts: 4,335

Likes: 1

Received 2 Likes on 2 Posts

RE: 4 * 40 kit

On the spar.

John

Edit -> Just measured mine at 3-5/8"

Reply Like

04-01-2004, 06:42 PM

rclane

Junior Member

Join Date: Feb 2003

Location: Andersonville, TN

Posts: 13

Likes: 0

Received 0 Likes on 0 Posts

RE: 4 * 40 kit

I measured my 4*40 plans and the CG is 3 inchs of the leading edge, so that would be a good starting point. Rod

Reply Like

04-01-2004, 07:12 PM

JNorton

My Feedback: (2)

Join Date: Jan 2002

Location: Coopersville, MI

Posts: 4,335

Likes: 1

Received 2 Likes on 2 Posts

RE: 4 * 40 kit

So now I'm really curious. I pull my plans down. Just like RCLane says 3". Don't know how I mis-measured, but I did. Re-measure the wing same thing????
Sorry,
John

Reply Like

04-01-2004, 07:33 PM

FHHuber

Banned

Join Date: Jan 2003

Location: gone,

Posts: 4,923

Likes: 0

Received 0 Likes on 0 Posts

RE: 4 * 40 kit

The CG marked on the plans is good for test flight and getting used tothe airplane. Best aerobtics will have the CG a bit further back... the 3 5/8 sounds about right for wher you end up eventually.