Hiya,
If you are looking for gear reduction, this may help. One of these could could work for a rotisserie, a drill press, or any gear reduction application. The first one is an electric Acme Homas vari-arc style with a small shaft and variable speed dial. The second is a mechanical style gear reducer made by zero max. It is a Model E2 unit which puts out 0-400rmp assuming an 1800rpm input. This is gear driven so it will need a power source either via chain or it could be reconfigured to work with a pulley. Both are used and are priced to move.