Kim Crosser wrote:Wherever you get them from, make sure the size is right...
If you are just going to run Autocross and DE events at the Q, 6" high (minimum) numbers are legal. If you are ever going to run Time Trials, 10" high (minimum) numbers are required (per Zone 8 rules). (The rules also say 1" width minimum, which only makes sense if that is the width of the individual vertical strokes [and gaps between] of the digits.) (Speaking for Corner Workers, 10" high digits are MUCH easier to read than 6" digits...)
Note that this drives the size of the overall decal - if you have 3 digits, each roughly 10" x 4" (minimum!), you need a decal that is at least 12" high x 14" wide. If you have 4 digits, then you need at least 12" high x 18" wide. If you get an oval decal instead of a rectangular one, it will probably be at least 14" high x 18-20" wide for 4 digits. If you are ordering a precut oval with 3-4 digits, you should probably get one at least 14" x 22".
As Kary notes, class designations change (ask any 993/996 driver this year who went from M to N or O!). I would suggest getting separate number and class magnetics, so you can change classes without getting new numbers. There is no spec for height/width of the class designation letters, but I suggest at least 5-6" high for readability.
Also, probably as important as size (size does count
) is contrasting color. A 6" contrasting color is more visible from a distance than a 10" like/blended color. So, think in shades of gray and severe contrast.
As an example, I run 7" tall numbers that are visible from the stands at Fontana because the car is white and the numbers are bright red. I saw a white car with blue numbers that were more difficult to see from the same distance, even though his/her numbers were taller.
my $0.02
D-
