Been thinking about building a saw mill for a while now. Was thinking more along the lines of a bandsaw mill, but saw a few Utube vids where folks used old lawn mower engines to power a chainsaw. I know most of the wood I would saw most likely would be under 24in dia, but I want the capacity to cut 48in or wider wood. Since i dont already own a saw suitable for really large dia wood, and old riding mowers are a dime a dozen, I am thinking just build a chainsaw mill using a mower engine. Now i know mower engines dont turn the rpms of a chainsaw, but saws dont cut buy rpms, they cut by ft/min, or ft/sec. So using the right size sprocket I should be able to get the chain speed I need, but just how long a chain can I pull with a small engine. The large Huskey and Sthil saws are only 8.5 hp, so would using a 14hp mower engine with appropriate sprockets pull a 48in chain saw chain.