-----Original Message----- From: James R. Frysinger <[EMAIL PROTECTED]> To: U.S. Metric Association <[EMAIL PROTECTED]> Cc: U.S. Metric Association <[EMAIL PROTECTED]> Date: April 26, 2002 23:48 Subject: [USMA:19691] RE: Metric Standards and the USMA
>Adrian Jadic wrote: > > I think that we agree about the need to reduce popular resistance. > >> And please be assured that my intervention on metric standards is not due to >> my misunderstanding USMA's role, but because I truly believe that the US >> will never advance in metrication if we continue denying the crucial role of >> implementing hard metric standards before we take a vote on metrication. > > Here is perhaps the crux of our disagreement -- which standards to >push. >> To answer your argument: >> >> No Jim, 60 Hz is as metric as 50 Hz but if the standards for electric motors >> will not change to hard metric then people will always use the HP ratings >> and present ANSI mountings which are ifp based and refer to shafts as 1" and >> keys as 1/4 etc. ... I believe that "ANSI", above should read "NEMA" (National Electrical Manufacturers Association). There is no question but that they COULD issue new standard outputs for motor using watts instead of horsepower (the tables for generators are, already, in watts (mW, W, kW, MW etc.). A critical analysis of the present motor output tables reveals a real MESS. They have "integral horsepower" lists; "fractional horsepower" lists; and, yes, milli-horsepower lists! They have different preferred number bases for different listings. The fractional lists reveal a real problem in attempting to follow a preferred number sequence. > >> Finally, I was not saying that USMA should embark on the task of changing US >> standards, (although I don't know who else) but all I was saying is that, at >> least, we should stop declaring that we don't promote international >> standards because this statement is to a great extent incompatible with >> USMA's goal. The setting of preferred output standards should, properly, be the *responsibility* of the industry group(s) involved. Why should USMA get involved in setting 'standard' bottle sizes for alcoholic beverages, fruit juices or TV screens? Duncan > >Jim >Metric Methods(SM) "Don't be late to metricate!" >James R. Frysinger, CAMS http://www.metricmethods.com/ >10 Captiva Row e-mail: [EMAIL PROTECTED]
