RCU Forums

RCU Forums (https://www.rcuniverse.com/forum/)
-   ARF or RTF (https://www.rcuniverse.com/forum/arf-rtf-75/)
-   -   laser cg help (https://www.rcuniverse.com/forum/arf-rtf-75/6147972-laser-cg-help.html)

theo63 07-23-2007 09:01 PM

laser cg help
 
i have a laser that i got from a local swap and it has a 74 inch wing span and was wondering what is the balance point on this model i have searched and find nothing close to mine

tIANci 07-24-2007 12:36 AM

RE: laser cg help
 
steve - this is not 100% correct but most of the times the CG is actually around the spar. Try to balance her on the spar and let is be slightly nose heavy. It should be ok for the maiden flight. Any picture of your Laser? Maybe its a Pacific Aeromodel one ...

theo63 07-24-2007 12:22 PM

RE: laser cg help
 
ill get a picture of it tomm night and post it,i looked at the pacific model laser but it does not match mine

theo63 07-25-2007 08:28 PM

RE: laser cg help
 
1 Attachment(s)
here is the picture and it has a 74 inch wingspan any idea of who might of made it or it might be a kit as well

Desertlakesflying 07-25-2007 08:49 PM

RE: laser cg help
 
You should really find the Mean Aerodynamic Chord of the wing, and balance the plane at 25% of that. I have a Seagull Laser 71 inch. Mine balances at 5 1/2 inches from the leading edge along the fuselage.

Cobra1 07-26-2007 06:17 AM

RE: laser cg help
 
Try this site - it is easy to use. Use a %MAC of 25 to 30 and the balance point will be given to you.

http://www.nasascale.org/howtos/cg-calculator.htm


All times are GMT -8. The time now is 09:47 PM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.