Recent content by jaguar57

I think maybe the formula I need is the one that includes velocity which is KE= .5 x kg x velocity^2

Calculating for a section of an engines connecting rod that is always changing speed I have seen different formulas for inertia. Must be different types. Since it is changing speed I guess I am looking for the inertia that is against that change. any help is much appreciated. I know ya'll get a...

I got it to work after seeing I forgot to put a pair of parentheses. Here it is corrected: PISTON INERTIA = (piston assembly kg + .66 x con rod kg) x (piston stroke meters/2) x ((radians(crankshaft angle change per second)^2 x COS(crank angle) + ((piston stroke meters/2)/(connecting rod meters))...

this is how I made the formula but it's not working for me: PISTON INERTIA = (piston assembly kg + .66 x con rod kg) x (piston stroke meters/2) x (radians(crankshaft angle change)/second)^2 x COS(crank angle) + ((piston stroke meters/2)/(connecting rod meters)) x COS(2 x crank angle) - ((.5 x...

Since cos(0)=1 and cos(90)=0 then I guess I can assume that the angle of the crank is from the horizontal axis since near 90 and 270 degrees (assuming o degrees is with the piston at the top of its movement) the piston has the highest speed? Do I need to have all weights in kg and all lengths in...

I'm making a spreadsheet and part of it needs to know the piston inertia every 15 degrees. By "angular speed" do you mean the rotational speed of the crank where the connecting rod connects to it? And the angle is from the vertical axis?

I need to know what the w is in this formula. Also I am not 100% sure which angle it is using. This is for figuring the inertia of the piston assembly in a 2 stroke engine. thanks