Originally Posted by Ridin' Green
This was lifted right from Hustler's site for the SZ
18,630 fpm (60)
18,630 fpm (60RD)
18,230 fpm (66)
18,530 fpm (72)
18,040 fpm (72RD)
Dude I do not care what there site says, I am telling you my 60 and 72 are the same size pullies with basically the same engine so the tip speed is higher on the 72 and it is all stock, now I will go out and measure it again then apologize to you if you are correct. ALL THINGS BEING EQUAL , GODDD!