Fisher price motors

Has anyone had much success with the fisher price motors?
Namely in being able to attach one to a set of sprockets?

Are you trying to attach a sprocket to the output of the fisher price gearbox? I’ve heard of success stories of teams using delrin to make an insert that meshes with the web inside the plastic output thing, and other ways of modifying the gearbox to accept a more standard output shaft…

if not using the FP gearboxes, consider using these: http://andymark.biz/am-0002.html

-vivek

interesting, how much torc do they have?

Does anyone know where the best source (fastest delivery)for FP motors is this year?