ronhatch 406 #1 Posted April 3, 2018 (edited) I tried to speed up the blade RPM's for a better cut by replacing the center spindle double pulley on my 42" SD deck with double pulley from a 36" unit, which has a 1/2" smaller upper pulley. Unfortunately, the recess under the new pulley had a smaller ID that didn't allow it to fit over the spindle housing. In addition, unlike the original pulley, there was a 1/2" space between the upper and lower pulley, thereby making the recess under the pulley deeper then the original by that much. Why can't engineers make parts more interchangeable? OH-Well, it happens. At least I tried, which is half the fun. Edited April 3, 2018 by ronhatch 3 Share this post Link to post Share on other sites
squonk 41,023 #2 Posted April 3, 2018 (edited) I bought a 314 with the center deck pulley flipped. sounded like an airplane and I don't think it did the deck and tractor any favors. Edited April 3, 2018 by squonk 2 Share this post Link to post Share on other sites
ronhatch 406 #3 Posted April 4, 2018 What I was proposing would have only increased the blade speed about 15 to 20 %. Not enough to overload the engine or with proper maintenance/greasing, do damage to the deck bearings. Today's mowers run a lot faster then they did back in the day. My son just purchased a new JD zero turn and boy, does that deck scream! I don't think it's deck is made any better then our older decks. Share this post Link to post Share on other sites
