meadowfield 2,613 #26 Posted December 31, 2024 There’s no room to up the gearing. You can only spin the input faster - or drive the brake shaft directly. On an 8 speed it’s a 12:1 reduction so you can really get some speed up! As far as gearing up goes it’s simple math…. Stock C-101 has a 4” engine pulley and 6” trans pulley. At 3600rpm it does just over 5.5mph. I’ve dropped my rear pulley to just under 4” and I can hit 8mph. To do 15mph the rear pulley would need to be 3” and the front 6” that’s quite impractical to achieve! The easiest way is an intermediate pulley to step things up. 1 Share this post Link to post Share on other sites
ebinmaine 68,663 #27 Posted December 31, 2024 16 minutes ago, meadowfield said: The easiest way is an intermediate pulley to step things up. That had crossed my mind as well. Perhaps a jackshaft with a step up. Share this post Link to post Share on other sites
kpinnc 12,716 #28 Posted December 31, 2024 9 hours ago, ebinmaine said: Do we know what the duty cycle percentage rating is at 4500 rpm? If that is at 100% or even 80%, I would imagine that short spans of time at a slightly higher RPM shouldn't do too much damage. I rarely run this particular tractor much over half throttle. Any computations on my setup should probably use 2000-24000 RPM as the input speed. 1 Share this post Link to post Share on other sites
