Chain driven mower

Does anyone have an idea for a clutch if I were to basically remove the belt and pulleys and use sprokets and chain on a mud mower?

Using a centrifugal clutch would allow you to do that. There are a couple guys on here doing those kind of builds.

I know I could do that but is there a way without buying a clutch? And besides, would that work when its hanging upside down?

you have to have a clutch or some way for it to slip.

Without a clutch, you won't have any slip or way to disengage under load except to shut the mower down. Not exactly a good mix when running chain all around.

Lol listen to these other guys. Without slip u will not be able to shift even if you could, id say bye bye to your trans and the gears in it.

centrifugal clutch or a cvt are your only 2 options

or run an atuomatic/hydro like i did when i ran chain. it popped wheelies and spun tires. still works no problem. just snapped the chain

You will need a clutch. Without any clutch, you will-

*Not be able to start the engine without beginning to roll immediately
*Not be able to come to a full stop without shutting down or stalling the engine
*Not be able to shift gears without breakage.

You would-

*Have to put it in neutral to start and warm up the engine on a cold start
*Then, after engine is warm, shut it off, put it in 1st or 2nd, and restart engine to begin moving
*To come to a complete stop you would have to shut engine off or brake hard until engine stalls
*To reverse, shut engine off, restart in reverse, shut off again, restart in forward,

etc etc etc.

Trust me, you need a clutch of some kind. Otherwise, it will be a total pain in the ass to drive.