Magnetic Number Vendors?

General discussions about Solo

Moderator: Mike Simanyi

Ernesto Chavez
Posts: 8
Joined: Fri May 19, 2017 9:29 pm

Magnetic Number Vendors?

Postby Ernesto Chavez » Tue Feb 06, 2018 7:56 pm

Hey all,

I just got my points card and was wondering if there are any vendors that you recommend that make magnetic numbers and class letters. Also, do I have to have numbers on both sides of the vehicle or is one side ok? You know, to save on costs. Thanks :D

Kevin Pao
Posts: 134
Joined: Thu May 15, 2008 11:25 am

Re: Magnetic Number Vendors?

Postby Kevin Pao » Tue Feb 06, 2018 8:42 pm

You need numbers and class on both sides of the car.

5zero4 - Owen -

Jaycom -Jayson -

Ernesto Chavez
Posts: 8
Joined: Fri May 19, 2017 9:29 pm

Re: Magnetic Number Vendors?

Postby Ernesto Chavez » Tue Feb 06, 2018 8:57 pm

Thanks for the info! :thumbup:

User avatar
Randy Gonzalez
Posts: 367
Joined: Sun May 26, 2013 8:12 pm
Car#: 436
Location: Orange County, CA

Re: Magnetic Number Vendors?

Postby Randy Gonzalez » Wed Feb 07, 2018 9:41 am

Any of our local club vendors will get you exactly what you need, but just in case you're interested:

Section 3.7 of the rules cover numbers:

Link to doc with rule 3.7:

Link to all SCCA autocross rules (just in case you want to really geek out!):


A. All vehicles must display numbers and class letters on both sides, which must be readable by Timing & Scoring, Course, and Grid workers at all times.

B. Only one set of numbers and class letters may be visible while the vehicle is running.

C. Class shall be represented by the upper-case abbreviated form rather than be spelled out. Ladies’ classes shall be indicated by the letter “L” following the class letters. (Example: “BSPL” instead of “B Street Prepared Ladies”).

D. Numbers and class letters should be positioned next to each other. All letters and numbers must be on body panels, not on windows. All numbers
and class letters must use the same typeface and the same color, and this color must provide adequate contrast to the background color (see Appendix F for examples).

E. Numbers must be a minimum of 8” (20.5 cm) high with a 1¼” (3.25 cm) stroke. Class letters must be a minimum of 4” (10.25 cm) high with a ¾” (2 cm) stroke. In all cases, the height of the class letters must be between 25% and 75% of the height of the numbers. Stroke width must be at least 10% of the height (see Appendix F.)
SCCA Certifications: Solo Safety Steward, Flagging and Communications

User avatar
Mike Simanyi
Executive Board Member
Posts: 2165
Joined: Thu May 15, 2008 11:26 am
Club: No$
Car#: 6

Re: Magnetic Number Vendors?

Postby Mike Simanyi » Wed Feb 07, 2018 6:45 pm

In addition to the rules Randy provided, keep in mind the idea is making them easily legible. Think "contrast," since that makes them very quickly and easily read by course workers and timing trailer staff.

If you have a dark blue car, don't go with black. Get them in white. If you have a white car, don't get them in yellow. Get black.

And consider angles too. A lot of medium tone metallic cars look really dark when they don't have direct sunlight on them, so a medium metallic blue with black numbers can easily be read under the best conditions, and be totally unreadable when the sun is low and on the other side of the car.

So think "contrast." And if I haven't mentioned it already, get a good, high-contrast color. ;)

Return to “Solo Talk”

Who is online

Users browsing this forum: No registered users and 4 guests