There are two types of chassis files used with MotoSPEC, indicated by their extension: MS1 and MS3.
The two types of chassis files allow MotoSPEC to be configured in multiple ways, providing flexibility to accommodate different usage scenarios.
The MS3 file extension indicates that the file contains chassis specification and settings for 3 columns in MotoSPEC.
All three MotoSPEC columns will be filled or overwritten by the MS3 file.
An MS3 file can refer to a common chassis specification (frame, swingarm, links, etc.) for all three columns, or each column can have it's own chassis specification.
The MS1 file extension indicates that the file contains chassis specification and settings for 1 column in MotoSPEC.
To compare three different models of motorcycle, import the MS1 for each model into it's own column, by clicking on 'IMPORT'>'CHASSIS X'.
To work with a single model of motorcycle and design design links or compare settings, an MS1 file could be imported into all three columns simultaneously.