Never saw this before, thought it was interesting

A buddy who did a bunch of testing in several different types of airplanes discovered every pound of weight increases take-off distance by 6" over your empty weight take-off distance. Or every two pounds extends the take-off one foot

Gary

100 lbs weight added to airframe decreases rate of climb 10% and increases take off run.

Sparky's rule....

Gross Weight
Takeoff Distance:
The takeoff distance varies with the square of the gross weight. A 10 percent increase in gross weight equals 21 percent increase in takeoff distance.

If you have never read any of Sparky Imeson's books there are a lot of great gems like this one in there!

Mike

So, how many extra feet per pound does that give ya?
Gary

The takeoff distance varies with the square of the gross weight. A 10 percent increase in gross weight equals 21 percent increase in takeoff distance

This is a little confusing to me.
So, say my t/o wt. is 2200lbs. add 10%(220lbs, 2 of three girls settin on the floats on the highlander)

If normally t/o n 700',now I will get off in 847'.

so 220lbs. cost me 147' or .67lb/ft.

Hope things don't get that critical for me in the real world, but intersting.

electricsnail wrote:Sparky's rule....

Gross Weight
Takeoff Distance:
The takeoff distance varies with the square of the gross weight. A 10 percent increase in gross weight equals 21 percent increase in takeoff distance.

If you have never read any of Sparky Imeson's books there are a lot of great gems like this one in there!

Mike

Have every book or video that Sparky ever did ,before he passed away. -all signed By Sparky -who I flew 100 hours with.

see here viewtopic.php?t=3732