Has anybody ever put a snowmobile transmition setup on a ural? I was just playing on my brother's snowmobile this weekend and I love Continuously Variable Transmitions. Yeah it would require some effort. Probably a totaly different engine and FD but it would be fun!

Hi, firstly I have no idea what you're talking about, I've never seen snow let alone a snow mobile. BUT, I'm interested in drive trains alright. What's a continous variable transmission? Is it like a centrifugal clutch? Does it change cogs? Please enlighten me.

Yes

there are two V-belt pulleys that are split perpendicular to their axes of rotation, with a V-belt running between them. The gear ratio is changed by moving the two sections of one pulley closer together and the two sections of the other pulley farther apart. Due to the V-shaped cross section of the belt, this causes the belt to ride higher on one pulley and lower on the other. Doing this changes the effective diameters of the pulleys, which in turn changes the overall gear ratio. The distance between the pulleys does not change, and neither does the length of the belt, so changing the gear ratio means both pulleys must be adjusted (one bigger, the other smaller) simultaneously in order to maintain the proper amount of tension on the belt.

Click on the pic. It is animated

Hello H20_for_life,i've got the same sort of set up on my pillar drill--quite handy!ride safe and free.martyn ,aberdare.