Recent content by 67 Rally Sport

i was afraid you were going to say that... It's been a long time since I have done any calculus. The good news is that my wife was REALLY good at calculus. The bad news is she may have already had enough of me and my growing obsession with Pinewood derby racing! Greg

Thanks, I think I have a good visual image of what you are describing. I have to say, this really brings out the math nerd in me! Now I want to dig up the formulas to calculate acceleration from zero. Hopefully, I can get my kids interested in this... Greg

Crash, All I can say is WOW. I do love the math. Just to make sure I understand your formula: 48" + cos(27.1)*3" = 48" + 2.67" = 50.67" 48" = the height of the start point 27.1 = the angle of the track (?) 3" = the height of the weight on the car (?) 2.67" = the distance from the front...

For what it is worth, my sons ran a couple of cars with canopies in their pack and district races and both did quite well. The cars were stable in all their races and were among the fastest in the field. If you have them, my vote would be to use them! Greg

NG Young, the 4 cars that ran in the race before us were slower on average by .03 seconds in their second races as compared to our average slow down of .13 As much as I hate to say it, I am leaning towards the likelihood that there was a hiccup with the timer. Thanks!

Hello all. I am the other guy that Tony is referring to. I will say that the cars hit into the crash box pretty hard. When they bounced out of the crash box, two or three of the cars knocked into each other. Now Tony mentions that his setup still looks good after the race. I haven't checked the...