Subject	I think trial and error woudl be too slow:
Posted by	therinL on July 15, 2003 at 12:57 PM
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In Reply To	How is the redline limit determined? posted by shirow on July 15, 2003 at 12:40 PM
Message	Most manufacturers use sound engineering practices. My guess being an electrical and systems engineer is that a company is given a set of criteria (statement of work) and in that statement, there is some way to determine about what power, etc is wanted and the engineers can integrate RPm into the mix. So while the RPM is somewhat intrinsically dependent on the materials, its is part of the design process: They *know* that the engine should not pass some RPM based on research and analysis, and label accordingly. Im not sure if its right, or accurate in any way at all...But thats the general way that many engineering firms will deal with constraints. Later Josh
Follow Ups	How is the redline limit determined? - shirow 12:40:33 07/15/03 Dependent on cylinder configuration, bore/stroke, valvetrain - U ZCREAM 12:49:10 07/15/03 Don't forget tolerance and balance of parts (n/m) - NytWolf 13:11:19 07/15/03 I think trial and error woudl be too slow: - therinL 12:57:20 07/15/03 'valve float' is first most common problem. - nixit 13:27:35 07/15/03 Umm... - therinL 14:41:58 07/15/03 Not always smashing a valve. true valve float begins - RT 15:00:07 07/15/03 Actually, it has more to do with the valvetrain design >> - ChristopherTheOne 15:44:10 07/15/03 Thanks guys, great answers. (n/m) - shirow 18:08:41 07/15/03 You also have resonant frequencies to worry about - NATAZ 14:36:05 07/15/03 The Tacoma Narrows Bridge comes to mind (n/m) - U ZCREAM 16:09:24 07/15/03 when you stop making power ;) (n/m) - Sweet Z(UTAH) 16:22:15 07/15/03
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