Nutiket 0 #1 Posted 9 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 42,403 #2 Posted 9 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. Share this post Link to post Share on other sites
wallfish 18,353 #3 Posted 9 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 60,710 #4 Posted 9 hours ago Perhaps an after burner would work. 1 1 Share this post Link to post Share on other sites
Nutiket 0 #5 Posted 8 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 7 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 7 hours ago by wallfish Share this post Link to post Share on other sites
Ed Kennell 42,403 #7 Posted 7 hours ago Pulley Size Calculator - Calculator Academy Share this post Link to post Share on other sites
Pullstart 67,245 #8 Posted 5 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. Share this post Link to post Share on other sites
