Sport Pilot Talk

Legally you only need one logbook. Many of us have and engine and fuselage logbook and quite a few have prop logbooks. I always use the first two logbooks, but usually don't bother with the prop logbook unless I make a change to a prop for some reason.

Actually per the regulations you are not required to even have logbooks. You simple need to keep a record of maintenance and inspections. This could be recorded on a stack on napkins and you would still be legal.

Also from a regulatory standpoint you don't even need to keep all of the old condition inspection entries. All the regulations require is that you keep it for 1 year or until the inspection is repeated. There are some records that are required to be kept and transferred with the aircraft when it is sold to someone else, such as total time on the airframe, engine, propeller, ect.