National Producer Number definition, categories, type and other relevant information provided by All Acronyms. NPN stands for National Producer Number Search for acronyms, abbreviations,
Height Considerations. There are no height limits for jockeys. However, jockeys tend to be shorter than normal to meet the weight guidelines. The average height for a jockey is between 4 feet 10 inches and 5 feet 6 inches.eight Limits. Depending on specific race and track guidelines, a jockey must weigh between 108 and 118 pounds without clothing and equipment, which can add a significant number of pounds.
The maximum weight limit for a pinewood derby car is 5 ounces. Plan on adding 2 to 3 oz of weight to your car, depending on your car design and the weight of your pine wood block.Gravity is moving your car down the track. More weight = more inertia = faster finish.Pinewood derby weights come in a variety of sizes, such as 3/8 round cylinder weights that can be hidden inside the car, zinc stick-on wieghts that can be placed anywhere on your car or screw-on weights tyipically screwed to the bottom of your car.hree 1 oz zinc round weights (approximately 3 oz total weight). Round weights are inserted into your car, so they are hidden. Just drill a 3/8 hole in the back of the block, cut off the exact amount of weight you need, slide them in and cover the hole with wood putty.