Last week, I offered simple descriptions of some words and phrases often used by NASCAR commentators.

Straight from my NASCAR "Page A Day Calendar, there are plenty more for me to share.

So, without further delay, here are a few must-know expressions for the knowledgeable NASCAR fan:

n A yellow strip across the rear of a race car means it's a rookie driver.

• Provided qualifying is not cancelled, 38 cars are normally set in the starting grid by qualifying speed.

• Stagger is the difference in size between the tires on the left and right sides of a car.

• The three-year rule means you cannot use a body of a car that is more than 3 years old.

• "Camshaft" -- A rotating shaft within the engine that opens and closes the intake and exhaust valves.

• "Drag" -- The resistance a car experiences when passing through air at high speeds, a resisting force exerted on a car parallel to its airstream and opposite in direction to its motion.

• "Wheelbase" -- The distance between the axles on the same side of the car.

• "Deck lid" -- The rear trunk lid of a race car. It opens like the trunk lid of a passenger car and allows access to the fuel cell.

• "Crankshaft" -- The rotating shaft within the engine that delivers the power from the pistons to the flywheel, and from there to the transmission.

• "Esses" -- Slang term used for a series of acute left and right hand turns on a road course, one turn immediately following another.

• "Air dam" -- A strip hanging under the front grill, very close to the ground, helping to provide down force at the front of the car.

I don't know if any of this has been helpful to you, but I sure feel smarter.

The Sprint Cup guys are in Loudon, N.H. on Sunday.

Watch for the return of Danica Patrick in Saturday's Nationwide race at 2:30 p.m. on ESPN, also from Loudon.

Lebanon Valley Speedway: Sportsman -- Kyle Armstrong (2nd), pro stocks --Bill Deak (21st).

Stafford Motor Speedway: SK modifieds -- Chris Jones (3rd), SK lights -- David Webb (7th).

Whip City Speedway: Peter Dance (10th).