cara424 Rail Runner Jan 14, 2019 78 12 8 57 Pa Feb 11, 2019 #1 How exactly does COG effect the speed on different length tracks ? Our COG is 5/8” . We”ll be running on a longer track at districts.
How exactly does COG effect the speed on different length tracks ? Our COG is 5/8” . We”ll be running on a longer track at districts.
