S-1

Equation for the recommended number of bicycles one should own. S stands for the current number of bicycles a person would own for their partner/spouse/significant other to leave them. Thus, a person should always own one less bicycle than the limit that would break their relationship.

A related term to this is N+1

Reference
The term S-1 comes from Velominati Rule #12 which states "This equation may also be re-written as s-1, where s is the number of bikes owned that would result in separation from your partner." In mathematical equations, variables are written in lowercase, so S-1 is usually written as s-1

Forum Introduction

 * Opinions on the Surly Cross Check? http://bikearlingtonforum.com/showthread.php?p=4030#post4030

Links

 * Velominati - The Rules http://www.velominati.com/the-rules/#12