Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

Go to Thread: PreviousNext
Go to: Forum ListMessage ListNew TopicLog In


greendonik
Dominik Schwilk

(1 posts)

Registered:
03/07/2014 07:24AM

Main British Car:


Lucas 14 CUX Speedotransducer
Posted by: greendonik
Date: March 07, 2014 07:26AM

Hello everyone, Is it possible to use the Speedo Transducer of a Rover SD1 for the Lucas 14 CUX System. If I Use a Tornado or Optimax Chip it should be work with a Transducer that produces a different number of pulses per rev because I have no speed limit built in. The Sd 1 Transducer produces 8 or 4 Pulses (12v /0v Square wave) I'm actually not sure.
What kind of Signal does the Original Transducer for example part. no AMR3386 produces??

Best Regards

Dominik Schwilk


DiDueColpi
Fred Key
West coast - Canada
(1365 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: Lucas 14 CUX Speedotransducer
Posted by: DiDueColpi
Date: March 07, 2014 01:49PM

The SD1 transducer will work just fine.
The ECU just needs to see a speed signal to determine if the vehicle is moving or not.
It uses this to calculate idle speeds and fuel cuts for decel.
Amplitude and frequency don't matter.
The early signals were sine wave and the later ones were square wave so pretty much anything is acceptable.

Cheers
Fred


mstemp
Mike Stemp
Calgary, Canada
(222 posts)

Registered:
11/25/2009 07:18AM

Main British Car:
1980 MGB Rover 4.6L

Re: Lucas 14 CUX Speedotransducer
Posted by: mstemp
Date: March 08, 2014 10:01AM

How can one add a Transducer if they are using a Ford T5 which uses an electronic speedo? Is there one that can be added to the drive shaft?

Mike


DiDueColpi
Fred Key
West coast - Canada
(1365 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: Lucas 14 CUX Speedotransducer
Posted by: DiDueColpi
Date: March 08, 2014 03:29PM

You can add a sensor just about anywhere Mike.
The output from your trans sensor can be tapped into.
What are you using for a speedo?
Most electronic ones have an output that can be utilized.
A magnetic or hall effect pickup can be used to sense a drive shaft ujoint or ring gear teeth.
You could drill your trans case and pick up the 5th gear teeth.
Or use an ABS sensor at a wheel.
The input is so forgiving that the only limit is your imagination.
Cheers
Fred


mstemp
Mike Stemp
Calgary, Canada
(222 posts)

Registered:
11/25/2009 07:18AM

Main British Car:
1980 MGB Rover 4.6L

Re: Lucas 14 CUX Speedotransducer
Posted by: mstemp
Date: March 09, 2014 10:24AM

Fred,

Thanks for the ideas. Not sure why I did not think of tapping in to the speedo. It's a VDO with Ford type sensor.


Sorry, only registered users may post in this forum.