They usually range from 55 to 70 mph. You also may want your Craftsman lawn tractor to go faster so you can compete in lawn tractor … There are videos of trucks drag racing as well. I have cut at 5.4 mph but sometimes my disc mower rides up on the grass and just cuts the top of the grass (bermuda/bahia). Should check em out on youtube. Burrows also noted that the speed limit doesn't require truckers to go 80 mph, and said they should be aware of how fast their equipment can safely travel — … The high-speed 4900 series planter available from Kinze Manufacturing can plant up to 8 mph, a 2.5 mph increase over its traditional planter (3000 series). I have to back up and re-cut, then move on. Owner ops can be alot higher than that though based on ego, task or just having money to burn. I usually cut at 4.8 mph. I have seen mostly 400-500hp for highway trucks as far as companies go. When you feel your Craftsman lawn tractor is lacking power and you would like to know how to make it go faster, you will need to follow a few procedures to ensure that its engine is optimized for speed. Heavy haul specific trucks can vary from normal highway trucks based on axles, suspensions and framed. But legally, any moving machinery with an SMV can’t go faster than 25 mph, even if it’s designed to go faster. But in a tractor, the engine's power is designed to be used in an entirely different way: for pulling big and heavy loads. Tractor size and mower size. There are about 2.8 million semitrucks (also called tractors) registered in the U.S. as of 2016. - posted in Machinery: How fast do you go when you cut hay? The governor is a device that is made of white plastic that limits the amount of power your engine can put out. In theory, that means they should be able to go incredibly fast, just like sports cars. Mostly trucks these days are governed. Page 1 of 3 - How fast do you cut? This is one of my most-asked questions..."How steep a slope is it safe to take my tractor on?" Tractors have large and powerful diesel engines, just like bulldozers, cranes, railroad trains, ships, and other giant machines. Remove the bolts or screws that hold it in place and unhook it from the engine. I have a Kubota M7060 and Kuhn GMD500. If you own your truck, lot of owners disable the goveners. If you can't readily find it, look in the manual to see where the governor is located. It all depends on the company you work for. As you can imagine, this is a technological tour de force that pushes the limits of tractor design into a direction this type of utilitarian vehicle was never meant to go. Remove the governor from your lawn tractor. For insurance reasons some govern them for about 80 mph.