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From: cpr0@bunny.UUCP (C. Rosebrugh)
Newsgroups: net.auto.tech
Subject: Speedometer limits
Message-ID: <272@bunny.UUCP>
Date: Tue, 17-Dec-85 06:21:18 EST
Article-I.D.: bunny.272
Posted: Tue Dec 17 06:21:18 1985
Date-Received: Fri, 20-Dec-85 01:35:39 EST
References: <1400@cornell.UUCP> <-74821361@techsup>
Organization: GTE Laboratories, Waltham, MA
Lines: 31




In a most interesting article, "mikey at bbimg" (trsvax!techsup!bbimg!mikey)
noted:

> pss.  All the new 86 Chryslers have a 125MPH speedo in their brochures
> except the OMNI/Charger series!  For those, they are available at extra
> cost.  55, an idea whose time has passed.

WOW, does this mean that all the new 86 Chryslers can go 125MPH (except the
OMNI/Charger series - available at extra cost)!! Because, like I'm sure
that a car can't, you know, go any faster than, and like it's top speed is
no slower than, like the maximum number on the speedometer.

Seriously, though, what's the regulation behind the maximum numbers on a
speedometer? How come the majority of them went to 85MPH some years back?
Why the change back to big numbers AND, if there is some "law" limiting
the largest number on the dashboard, does it apply to foreign cars
also - my 325e's speedo goes to 140+.

Also, if a rip the stopper pin out of a speedometer (the pin the needle hits
at max mph), is the needle movement still "linear" (given that the actual
motion is circular)?

Any insight to questions posed will be appreciated.


                          Chris Rosebrugh
                          GTE Laboratories, Waltham, Mass.
                          !harvard!bunny!cpr0