stationary

I bought an idler sprocket for my doodlebug,because it didnt have the original tensioner.should the sprocket be on a spring loaded arm or do i have to have it stationary? Any ideas ,examples,or pictures of completed projects would be very helpful .thanks

I posted this in the general section earlier, but maybe it belongs here. I am working on a go kart , but it only has part of the drive clutch. As you can see it is missing the stationary plate. I really dont understand Comets numerical series , at any rate I am in need of the stationary plate, ...

I am working on a go kart , but it only has part of the drive clutch. As you can see it is missing the stationary plate. I really dont understand Comets numerical series , at any rate I am in need of the stationary plate, . The clutch I have measures 5 inches across, and is a 5/8 keyed...