mrbigg

My Feedback: (21)

does this have any adverse effects on flying? I know it will affect the CG.
I have seen that on some profile planes, the engines were moved foward for CG adjustment. I just wonder how much is too much, and the effects, if any on the flying characteristics.

BillS

The engine location font to back for balance purposes did not appear to make and difference in the way the airplane flies. On a forty-size airplane I would not consider 1 1/2 inches too much or 5 inches too much on a quarter scale gasser.

Bill

mrbigg

My Feedback: (21)

thanks, alot.

JohnBuckner

My Feedback: (1)

A longer nose will indeed cause a sllght reduction in yaw stability about the vertical axis, this due to the additional vertical side plate area ahead of the center of mass When the the airplane is flown fast and high flight loads are applied (as in a vertical bank and the elevator is applied) is when it can show up in the form of momentary tail waggle as the G's are applied. This is one of the reasons modern pylon racing airplanes tend to have short noses.


As far as your airplane or most sport airplanes and BillS has already indicated, nope you will never notice the effect.


John

sbd-5

My Feedback: (4)

it is better to move the engineforward to balance the plane than to add weight.the lighter the better.brian taylor and some others mount the engine on a box on the firewall and the length can be adjusted to help balance the plane.another way is a heaver engine or larger engine.either throttle back or use a finer pitch prop.

mrbigg

My Feedback: (21)

i was just wondering, so that i don't have to cut up the engine box for the carb. hopefully i won't have to.

rcalfred

Listen to old "Dauntless" he knows about such things from experience.