Thanks Chris, You have been very helpful in making this come to furition. After I posted my message, I was tinkering with the online calculators and the pullies I have. If I understand your post correctly, increasing the speed will be of better benefit than changing the stroke. Here is my plan. I plan to replace the 9" pulley on the long axle with a 5" pulley and keep everything else in place, This will bump my RPM's from 77 to 140. Hopefully this will increase the G's enough to give me the desired effect. What do you think? I have everything pretty tight and well supported. 2G's should not impact it much.