QUESTION:

IF YOU LOOK IN THE POLARIS PARTS BOOK ON THE WEB SITE, LOOK UP THE 600 OR 700 FUSION, THE GEAR RATIO'S ARE 1.6 TO 1.7.

LOOKING AT THE PARTS BOOK FOR THE FST, THE RATIO COMES OUT TO AROUND 2.1 AND USING THE OLD SPEED CHART THAT I USE FOR MY 700, IT DOES NOT SHOW THE SPOCKETS OR SPEED AT 8000 JACK SHAFT SPEED.

WHAT' UP ???

What FST you got??

There is contradictory gear ratio information from Polaris. The info that I am using now, is:

24/44-80 1.83 FST Touring
24/40-78 1.67 FST Classic, FST Switchback

LATE NEWS 05/11/28

Here is the Post about FS/FST specs they contain the same sea level gear ratios I have been using.

94mph @8000 jackshaft RPM
103mph @8000 jackshaft RPM

The FST motor runs 8000 RPM +-200rpm, if you can get 10% overdrive from the clutching system...
103mph @8800 jackshaft RPM
113mph @8800 jackshaft RPM

I'm sure you get the idea.

THANKS FOR THE RATIO INFORMATION, I WENT BACK TO THE WEB SITE AND CAN NOT FIND THE RATIO'S YOU TALKED ABOUT.

BUT, YOUR RATIO'S MAKE SENSE.

THANKS AGAIN

Well, I wish Polaris would have included the 24/44-80 combination in their chart since they used it in my sled, but that's just me.

You will need Adobe Acrobat Reader to view/print this chart.

THANKS FOR THE CHART

JIM B