Painted up some parts for the death machine and didn't want to watch paint dry so I got on the computer.
Found some cool stuff to view and read. One of them is a video by some crazy Frenchman. Yes I know it is not an oddy Engine. Kind of fun to watch as he gets to the point fast, but one of his comments caught my ear. He commented on stinger diameter and gave some warnings on it. I looked in the comments section below video. A viewer talked about the "Jennings rule". You can find it in the "two stroke tuners handbook".
Here is the video: https://www.youtube.com/watch?v=CxJ5IwVlIbU

Then I looked up some "Jennings rule" stuff.
A really good read on "Thumper talk".
View here: https://thumpertalk.com/forums/topic/75 ... -diameter/
The stuff I like best is on the last page (page 3), but you need to read the whole post. It's only 3 pages.

I also found a free 2 stroke expansion chamber design program and I downloaded and scanned it with Norton. It came up clean but I did not install it on my computer. Here it is: http://www.iwt.com.au/MOTA.HTM
Don't know how good it is but I guess free is good. I might install it tomorrow and play around if I have time.

adnoh will love this crap

I do. Build on it please