What type of cog will fit kid's coaster hub?
Bike has a coaster hub with a cog retained by a snap ring. Which type of replacement sprocket should I be looking for (I see lots of type available -B-type, E-type, SA - but no dimensions)? The inside diameter should be be 29-30mm or 1 3/16".
Shimano Nexus sprocket is too large (by about 5mm).