Use fishing weights to make your pinewood derby car heavier. Drill holes just a little bigger and deeper than the weight, then pour glue into the hole before putting the weight in. Set the car upside down until it dries. Be sure to weigh the finished but unpainted car until you’re close enough to the weight limit.
Tags: Pinewood derby
what also worked 4 me was drilling in screws
What also worked for me was just piling the supplied weights on the top of the car close to the back.