itsonn
03-07-2002, 09:44 PM
ghmbo
do you know how or what percent should the size for plans be for an extra 300 for a 90 4stroke or what percent it should be
GHMBO
03-07-2002, 11:34 PM
Golly, I have never owned a mill that big. I would suggest you pose your question in the Sport(glow) section. Lots of savy guys there. You might look at http://maryjo3.freeyellow.com/plansport.html
and see if you can find something similiar.
Richard Miller
03-08-2002, 02:21 PM
Itsonn,
Try thinking in these terms: That for a model to fly the wing must process a given volume of air. Span X Chord X Vertical Dim. The power/force to do that, in a powered airplane, comes from the thrust provided by the engine that drives the wing through the air.
So mate one to the other. If your initial linear dimension were, let's say, 10, the cube would be 1000. Let's say you're flying that model with 0.10 cu.cm. If you increase the linear dimension to 20, the cube = 8000 and you'd need 0.80 cu.cm to do the job.
Got it?
-Richard