The older unit (1958 through 1966+) is pretty reliable, and seems much more accurate. There are two major mechanical differences between it and most more modern units. They are the use of contact points in the older system, which benefit greatly from being cleaned once in a while, and the lack of vacuum being incorporated into the system as a method of control or actuation. Some other differences are mainly related to these two, and otherwise the principals are very similar, in that they interconnect with the speedometer cable.
I have also had experience with totally different, electronic add on systems that do not connect into the speedometer cable, but rather go through ignition spark as a means of speed monitoring. Those systems have been very accurate and use vacuum to actuate the throttle. In my case, though, they were not very reliable.
The patterns of evolution really are very much like those of other mechanical devices that have been developed over the years.
Paul W.
-----Original Message-----
From: A. Foster <monkeypuzzle1@xxxxxxx>
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Thu, 16 Mar 2006 21:37:30 -0800
Subject: IML: Auto Pilot vs. speed control
Hello all;
I have been going over my backlog of e-mails and noticed some discussion
of the Auto pilot cruise control system and how well they work. I do not own
a car with this feature, one is too new and the other too new, but the newer
car has a speed control. My question is how does the newer speed control
system, from the 1970's, compare with the older Auto Pilot system in
performance and reliability. I have not had an opportunity to test the speed
control in my 75' Newport due to the need for a new speedometer cable.
Best Regards
Arran Foster
1954 Imperial Newport
Needing A Left Side tailight bezel and other trim parts
1975 Chrysler Newport
Trying to get the Auto Temp working again.
----------------- http://www.imperialclub.com -----------------
This message was sent to you by the Imperial Mailing List. Please
reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be
shared with everyone. Private messages (and attachments) for the
Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx
To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm
Back to the Home of the Forward Look Network