Nutiket 0 #1 Posted 14 hours ago Hello. I have a stock SK-486. Any ideas on how to make it faster? Share this post Link to post Share on other sites
Ed Kennell 42,409 #2 Posted 14 hours ago Increased diameter of engine pulley Decreased diameter of transmission input pulley These require belt and belt guard changes. Increased rear tire diameter. May require seat pan and foot rest mods. 3 Share this post Link to post Share on other sites
wallfish 18,353 #3 Posted 14 hours ago How fast do you want it to go? Changing the engine pulley larger or the trans pulley smaller accomplishes higher RPM at the trans. There are many pulley calculators online Share this post Link to post Share on other sites
953 nut 60,718 #4 Posted 14 hours ago Perhaps an after burner would work. 1 2 Share this post Link to post Share on other sites
Nutiket 0 #5 Posted 13 hours ago How would I know what to increase/decrease the sizes of the pulleys too? Share this post Link to post Share on other sites
wallfish 18,353 #6 Posted 12 hours ago (edited) 22 minutes ago, Nutiket said: How would I know what to increase/decrease the sizes of the pulleys too? 1 hour ago, wallfish said: There are many pulley calculators online How would we know if we don't know what you're actually trying to do? Is this just to mow the lawn a little faster? Race it? How fast do you want it to go? I built a Wheel Horse that did 30 mph + The engine pulley from a Hydro driven tractor is an 1" bigger than the manual tractors. That's were you might want to start and gain a little speed Edited 12 hours ago by wallfish Share this post Link to post Share on other sites
Ed Kennell 42,409 #7 Posted 12 hours ago Pulley Size Calculator - Calculator Academy 1 Share this post Link to post Share on other sites
Pullstart 67,257 #8 Posted 10 hours ago you won’t find the answer to your question in a manual. It’s gonna take a little trial and error and figuring. Just remember the belt guard on these is an integral component of the clutch system. You modify the pulley sizes, you’ll need to modify the belt guard to work. 5 Share this post Link to post Share on other sites
ri702bill 9,617 #9 Posted 2 hours ago 8 hours ago, Pullstart said: It’s gonna take a little trial and error and figuring. Just remember the belt guard on these is an integral component of the clutch system. You modify the pulley sizes, you’ll need to modify the belt guard to work. That says it all - almost. If you modify your existing tractor, the belt guard MUST be included. The not so obvious - engine swap along with pulleys? The obvious (to me at least) - wrong tractor to invest time and $$$ in?? ... and the one that pops up when done - how can I stop this damn thing???? To rephrase what @Pullstart said..... "there will be error, followed by a trial!" 1 Share this post Link to post Share on other sites
