Thread Tools
May 20, 2001, 02:39 PM
small electrics r BIG FUN

Does the specified C G change with heavier motor/batteries ?


Let's say a plane comes with the C G specified for a certain location, say, 2 inches from leading edge of the wing.

If I install a heavier motor and esc, I don't balance in a different spot, do I ? Don't we move the flight pack or something else to maintain balance in the factory location ?

Thanks

Al
Sign up now
to remove ads between posts
May 20, 2001, 03:59 PM
Registered User
Doc Watson's Avatar
Al P,

Balance the plane in the same place. A heavier model will just have a faster minimum speed (and higher structural stresses).

Doc
May 22, 2001, 10:06 AM
Balsa Flies Better!
Depends on the design and the amount of extra weight. For a standard clark y type airfoil and a flat plate stab + 20 % in weight or so, you're probably OK. For an undercambered wing with a lifting stab- move the c.g. forward as weight increases. It's often not a bad idea to sneak the c.g. forward a bit for first flights-and set a little extra up in the trims. Nose heavy airplanes get retrimmed, tail heavy airplanes get rekitted.

Sam Brauer
Norwalk, CT
May 22, 2001, 03:26 PM
small electrics r BIG FUN
Thanks for the replies.. I moved my flight pack forward 1/4 inch and it flies great now.

Thanks

Al
May 22, 2001, 04:25 PM
characters welcome!
Mark Wood's Avatar
The CG is an inherant part of the design that does not change. The balance however will change.

mw


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Hhhmm... C of G prob with Spirit and pod ThePitchedLink Sailplane Talk 2 Feb 14, 2005 11:04 AM
FS: SA G-Ride with AXI Motor - Both N.I.B. cadconversions Aircraft - Electric - Airplanes (FS/W) 31 Apr 10, 2004 11:44 PM
G-Ride with AXI motor RickC2009 Parkflyers 8 Feb 26, 2004 02:06 PM
S/C for hornet with CDR motor? Eddy Micro Helis 23 Jul 23, 2003 12:36 PM
C.G. Problems with Python RCFlybry High Performance 29 May 28, 2002 03:42 PM