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RE: Cruise Control

To: "doug russell" <dr-doug@msn.com>
Subject: RE: Cruise Control
From: mmcewen@gpu.srv.ualberta.ca
Date: Wed, 23 Apr 1997 00:21:31 -0500
Hi Doug:

I understand your point about LBCs and cruise control.  However I am going
to install it on my MGB.  It is not unusual for me to drive it six or seven
hundred miles in a day.  I find the throttle position is not comfortable
and my leg and foot suffer as a result.  I don't like to make frequent
stops so CC makes a lot of sense.  The reason LBCs don't have CC is that it
wasn't available.

Cruise was not available on any car until 1958 when Perfect Circle
introduced an electro/mechanical system which was initially used on
Chryslers and Cadillacs.  Other vehicles gradually were optioned over the
next few years but until 1967 it was usually found only on luxury cars.

The modern servo-controlled systems did not become common until the late
'60s, early '70s but in Britain, by this time, our LBCs were nearing the
end of the development road.  I am not sure when the first CC was available
on an LBC but it was probably not earlier than 1970 and then probably only
on Jaguar and later Rover.  I am not sure about RR and Daimler.  Probably
CC was available on American-engined vehicles like Bristol and Jensen.

My point is that CC would have been found on LBCs if it had been available.
Installing it today, providing permanent changes are not made to the car,
should provide the benefits which can accrue on long trips.  A discreet CC
can make the journey less fatiguing - particulary as some of our bodies
have more miles on them than the old cars we are driving.  Out here in the
"wide-open West" a curve in the road is the exception, not the rule.  Too
often we are faced with miles of straight flat road which must be traversed
in an attempt to "get somewhere - anywhere".

John McEwen





>I'm pondering this thread and am wondering to myself ...<this is me wondering>
>Is it me or do others think CC is antithetical to the reason we drive an lbc??
> As I said, just wondering aloud ...
>
>A hick from PA who thinks CC is great in the family wagon or perhaps a m**ta
>
>BTW, old Rover 4x4s use to have CC - it was a throttle (much like a manual
>choke) that one would pull out to adjust the speed - with some practice one
>could get pretty good at it - however, it would not disengage if the brake
>pedal was pressed which made for some interesting sudden stops.
>
>Dr. Doug
>69 C Rdst (No CC but the engine heat will melt your shoe on a long drive)
>69 C GT (No CC .. ditto on the engine heat)
>69 B Rdst (No CC)
>71 B GT (No CC but it does have A/C albeit non-functional)
>
>
>-----Original Message-----
>From:   owner-mgs@autox.team.net  On Behalf Of Aron Travis
>Sent:   Tuesday, April 22, 1997 2:48 PM
>To:     thomas_pokrefke@juno.com
>Cc:     mgs@autox.team.net
>Subject:        Re: Cruise Control
>
>thomas_pokrefke@juno.com wrote:
>>  My system has a magnet that is placed on the driveshaft and a
>> sensor that is mounted near that.
>
>Not a direct answer to your question,but, a friend just put a aftermarket
>cruse control on his non MG car. It has a servo with a arm that you
>attach to your throttle linkage, and a wire that you attach to your coil.
>It senses the RPM via the coil, and therefore moves the arm accordingly.
>Of course you should be in the proper gear before hitting cruise. I was
>impressed by the simplicity of the system (it's about the size of a coil)
>and it seems to work very precisely. I'm sure he got it from Summit, I
>can get the particulars if anyone is interested.
>Magnets on a driveshaft seem to be a hassle waiting to happen.
>-Aron Travis-
>"always in a automotive frenzy"



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