S&S Cycle - S&S Performance Parts 2025 L - Volume 67

Appendix

www.sscycle.com

1 -2017-UP 2- 2007-'17 3 -1999-'06 4 -1984-'99 5 -1936-'84 6 -XL-RA1250 7 -BELTS & GASKETS 8 -TOOLS 9 -WARRANTY 10 -APPENDIX

With a motto like "Proven Performance®", which is a registered trademark of S&S® Cycle Inc , it is very important that we be able to back up our claims regarding performance It is also vitally important to be able to evaluate new designs in our development process One of the tools we depend on for both of these functions is the chassis dynamometer Something that needs to be understood about dynamometers is that the results from one dyno will not necessarily be identical to those from another dyno So comparing results from different dynos is bound to create a certain amount of confusion This is especially true with dynos from different manufacturers Howev er, results of tests run on the same machine can be compared with a high degree of confidence We can determine, for example if a performance modification increased power or torque, but there is a problem if you expect absolute values There are several brands of dynamometers which are in common use in the performance industry These dynos will yield very reliable values for comparison, especially when tests are performed on the same machine However values obtained from these dynos may not always agree Which value is correct? It depends on who you ask No Absolutes In our literature and catalogs, we publish dyno results so our customers easily can see how our products improve performance over stock However, it must be remembered that these are comparative values, and should not be taken as absolutes If a similar or even identical engine or motorcycle is tested on another dynamometer, the results will m ore than likely differ

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