1,481ramstrongFri 25th Jan 2013 bluerobin2 wrote: but I will not delete that comment for it contains other information. → . You can edit and selectively delete the part, you know. damolii wrote: @ramstrong ,thank you for clarifying. I tried your x=R*Cos(A):y=R*Sin(A), but i did not use your SPANGLE idea. Now that I think about it though, the change in the angle would change it's direction, right? It's Beyblade. I assumed you wanted it to spin. Polar coordinate is very interesting. There are many ways to use that equation, so if you try it only one way, then you need to try more. Don't give up! Keep trying! Show me what you did, and I'll see if I can nudge you elsewhere. Edited on Fri 25th January, 2013 @ 13:45 by ramstrong Petit Computer Journal Old site http://ramstrong.blogspot.com Let's just call a spade, a spade.