Re: [DML] Angle Driveless Speedometer

[Steve Stankiewicz <protodelorean@xxxxxxxxx>]

Hi Bryan.  I've got half of that solution in place on my D now.  Since I've got an electronic speedo, I have a sending unit at attached to the top side of the lamda counter which converts the lower cable rotations to the electronic pulses for the speedo.  (No upper cable at all.)  If/when my angle drive fails, I'll move the transducer out to the hub and eliminate the angle drive and lower cable also.  (The 8:9 ration won't be an issue because the electronic speedo is easily recalibrated.)

You could do this with a stock D, but as you mentioned, you need a way to get the electronic pulses to drive the mechanical speedo.  This part can be a little costly.  It's essentially a motor that reads the pulses then drives a cable to the mechanical speedo.  Here's one example: http://www.atrol.com/cablex.htm ; for $310.
 Steve 


VIN 2650 ("Project Delorean")
www.projectdelorean.com 




________________________________
From: Bryan Pearce <bryanp@xxxxxxxxxxxxxxxxx>
To: dmcnews@xxxxxxxxxxxxxxx
Sent: Sunday, March 8, 2009 10:50:46 PM
Subject: Re: [DML] Angle Driveless Speedometer


The mechanical angle drive on the DeLorean continues to be an issue 
for several owners of our cars. Yes, many people have had reliable 
units that have lasted for many miles. I have about 180,000 miles on 
my car and have only replaced the angle drive twice.

A few years ago someone in the Chicagoland area was playing with an 
electronic replacement for the mechanical cable that runs from the 
angle drive to the interior. This setup involved a pulse generator at 
the front wheel which then signaled a motor mounted to the speedo to 
turn at the correct rate.

Has anyone heard any more information about this?

Does the community think that this type of replacement would be of 
value?

It would seem to me that this type of system could be removed in the 
event the owner wished to restore the speedo to its original function 
but also has the potential to support additional functionality of 
modern trip computers.

Bryan

Bryan Pearce
Pearce Design Components, Inc.
(630) 293-0945
www.pearce-design. com

On Mar 8, 2009, at 6:10 PM, content22207 wrote:

> "Engineering" may be too strong of a word in this instance. This 
> modification was not dreamed up by a room full of PhD's -- it was 
> cobbled together by an unemployed railroad locomotive mechanic in 
> his own driveway. It also is not intended to last the lifetime of 
> the vehicle -- it is just a temporary fix that yields a reliably 
> functioning speedometer until life circumstances allow purchasing a 
> true "engineered" solution.
>
> A direct drive cable is infinitely superior to a tach xRef chart. I 
> offer it here as a suggestion for anyone in the same predicament as 
> myself (broken angle drive and no money for a replacement) , and to 
> inspire similarly motivated owners to use their imaginations to fix 
> whatever ails their little cars. Given today's economy, what else 
> can you do?
>
> Bill Robertson
> #5939
>
>
>> --- In dmcnews@yahoogroups .com, Martin Gutkowski <martin@...> wrote:
>>
>> As I said on DMC Talk, the fact that the cable now goes through the
>> front spring is not great engineering.
>>
>> Martin
>
>
>
>
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