ktmdude, thanks, but I am not 100% that I'm right on that, but I think I'm close. I am waiting on the real smart guys to say what I'm overlooking. Sometimes its hard to post on here because I want to post correct info, and not guess. Usually some body throws in better facts. I see the countershaft turning 3 point something to turn the back sprocket, but still not getting what the final number is. I need to go back over that stuff. Maybe its turns of the crank to turns of the tire. something like that.
Goat, I am hoping one of our Kxrider machinist buddies will take this idea and run with it, too. I am a carpenter, but I don't think anyone wants them made from wood.
I guess I could make a mock-up out of oak.
Yeah, I hear ya' Maddoggy, its confusing. I would say that changing front and rear sprockets, instead of one or the other, adds to the mess. In my way of thinking, 14-45 = 15-48, or 15-50 = 14-47. They are not exactly the same, but close. 15-50 is a bit tall? then you would want like 14-49. Or you start running first longer before shifting. I don't know, its all preference and conditions, like you are saying. I don't change my gearing very often. Its kinda like jetting, once you find the sweet spot, and its finally dialed in, I just do a couple on the back, one way or the other. But each bike likes its own gearing. I did my homework on the charts to see what gearing I needed to pull 1st or 3rd gear holeshots and how close i could get the ratios to 2nd gear pulls. To make a long story short, 1st and 3rd gear holeshots are not close to 2nd gear ones with the standard sprockets, 13, 14, 15, 49, 47, 45.
This is how the blocks look on the Cr. We have a lip on the stock blocks of a kx500. Ours would have to be different design, but same dimensions from center.