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01-12-2009, 09:42 AM

This is my first time to build a car with my son, and I am looking for some rocket science here..
My question is this, after construction I need to add some ounces, does it make a speed change if I put it in the front, center mass, or rear??

01-12-2009, 09:42 AM	#1
Gone Dave Guest Posts: n/a	weight ? for Pinewood derby car builders This is my first time to build a car with my son, and I am looking for some rocket science here.. My question is this, after construction I need to add some ounces, does it make a speed change if I put it in the front, center mass, or rear??