rickc
Elite Veteran
Location: Creve Coeur IL. (Peoria Area)
My Posts This: Topic Forum | My son won several over all championships in our area. First build a wedge, add all the weight to make the car a hair over 5 oz, We used lead putty and dug the needed amount out at each weigh in to pass on the scale they used at the event, dig some out and weigh, dig some out and weigh, dig some out and weigh, you get the picture. Make an event of it, do it when there is a line behind you waiting to weigh in. The inspector will finally get tired of you and pass you with possibly a fraction of a gram over. Make the CG of the car about a 1/4 inch in front of the leading edge of the rear tires. This keeps the weight on the slope the longest time.
You want to run only 3 wheels contacting the track also, make one of your front wheels sit 1/16 off of the track, this is less friction as your car travels down the track but still allows your car to ride the guide rail ok, also make your front axles as far forward as you can but don't let the front of the wheels stick out past the front of the body, do the same with the rear. This makes the front and back wheels the farthest away from each other, thus reducing the amount of times the guide rail can contact the inside of the wheels as it travels down the track.
As your son sits his car on the track, have him pull his wheels out to widen the wheel base as much as possible, centering the guide rail under the car, this will allow the car to travel the farthest before making a contact with the guide rail.
As far as the axles go, do as other have posted, polish, polish , polish. Use powered graphite. Make sure the axles are perfectly installed 90 degrees to the body. No toe in or toe out wanted. True up your wheels.
Show us a picture of his trophy.....
Rick |
