Gearing Information

[Revin300EX]

A friend of mine is making a program that will calculate approximate top speeds of dirtbikes and ATVs. He wants to include some presets, and I cant seem to find this information in my manual to give to him.

I need to know the Primary Reduction Ratios and the Gear Reduction Ratios for the 300EX, 400EX, and 1986 TRX250r.

Any help would be REALLY appreciated. Ill post a link where you can download the program when it is finished.

[86atc250r]

http://home.earthlink.net/~gellett/400ex.htm

[RIDER11X]

I hate to admit it, but Blutraxx.com has a very nice calculator programs that are easy to use for any machine.:eek:

[Revin300EX]

I realize there are other calculators out there, but this one will be a downloadable Windows-Based program. It has several other features, such as a Mix Ratio calculator that will tell you the ratio even if you use a metric amount of oil and a standard amount of fuel.

So I need this information so we can put it into the program, if you know what the ratios are for these machines

Here is a link to where you can download the program and try it yourself.
http://homepage.eircom.net/~thefoundation/dbprog/Sprocket.exe