added note gear ratio

gear ratio for all cars ran was 4:1

prediction

weight=race times       

 low weight=the best times

car test #4

car specs
-tested with the top shell off
-nickel cadium batteries
-batterie charge 2.87
-2 wheel drive
- times
1st test-11.28
2nd test-11.26
3rd test-11.09
anylisis-taking the top off to decrease weight did not dramatically effect the times like I though. The times stayed about the same.

conclusions

my conclusions based on the data i have recorded so far.
-try to nmake your car as light as possible to increase speed, like taking the top off of your car and using the lightest batteries.
-the nickel metal hydride weighs a whole ten grams more than the nickel cadium
-grease barrings well or the tires will not spin right
-try to keep the spinners a little loose