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-   -   VDO tachometer-hourmeter with bad display (https://www.boatbanter.com/electronics/121398-re-vdo-tachometer-hourmeter-bad-display.html)

Nigel Molesworth[_2_] December 21st 10 03:18 PM

VDO tachometer-hourmeter with bad display
 
On Tue, 09 Nov 2010 16:37:26 +0100, Dino
wrote:

Hany suggestion or link?


http://www.ybw.com/forums/showpost.php?p=2693853&postcount=10
--
Nigel M

Oh.humes December 22nd 10 10:51 AM

One of the most common is via a newsreader (e.g. Outlook Express). Therefore it is important to include the details of the post to which you are replying, so newsreaders can interpret them correctly.

Nigel Molesworth[_2_] December 23rd 10 10:47 PM

VDO tachometer-hourmeter with bad display
 
On Wed, 22 Dec 2010 10:51:55 +0000, Oh.humes dasasd wrote:

Therefore it is important to include the details of the post to which
you are replying, so newsreaders can interpret them correctly.


Huh?

--
Nigel M

Dino December 27th 10 10:30 AM

VDO tachometer-hourmeter with bad display
 
On Tue, 21 Dec 2010 15:18:58 +0000, Nigel Molesworth
wrote:

On Tue, 09 Nov 2010 16:37:26 +0100, Dino
wrote:

Hany suggestion or link?


http://www.ybw.com/forums/showpost.php?p=2693853&postcount=10


Thaks for the link.

The above link do not show any details about wiring
connection.

I have decided to progress with a separate hourmeter and
leave the original tachometer only for the RPM display.

The reason is because of the uncertainty of hourmeter
connection. The VDO is connected to the motor with two wires
that carry the RPM pulse. It is my believe that RPM pulses
are internally analyzed to originate the "motor running"
information to the original hourmeter.

I'm progressing with a mechanical 12V hourmeter and a small
12V relay connected to the alternator output.





Bruce in Bangkok[_16_] December 28th 10 12:16 AM

VDO tachometer-hourmeter with bad display
 
On Mon, 27 Dec 2010 11:30:40 +0100, Dino
wrote:

On Tue, 21 Dec 2010 15:18:58 +0000, Nigel Molesworth
wrote:

On Tue, 09 Nov 2010 16:37:26 +0100, Dino
wrote:

Hany suggestion or link?


http://www.ybw.com/forums/showpost.php?p=2693853&postcount=10


Thaks for the link.

The above link do not show any details about wiring
connection.

I have decided to progress with a separate hourmeter and
leave the original tachometer only for the RPM display.

The reason is because of the uncertainty of hourmeter
connection. The VDO is connected to the motor with two wires
that carry the RPM pulse. It is my believe that RPM pulses
are internally analyzed to originate the "motor running"
information to the original hourmeter.

I'm progressing with a mechanical 12V hourmeter and a small
12V relay connected to the alternator output.

Why not just wire it directly to the "ignition switch"? When the
switch is on the hour meter runs, when it is off it doesn't.
Cheers,

Bruce
(bruceinbangkokatgmaildotcom)

Dino December 28th 10 10:48 AM

VDO tachometer-hourmeter with bad display
 
On Tue, 28 Dec 2010 07:16:12 +0700, Bruce in Bangkok
wrote:



http://www.ybw.com/forums/showpost.php?p=2693853&postcount=10


The above link do not show any details about wiring
connection.

I have decided to progress with a separate hourmeter and
leave the original tachometer only for the RPM display.

The reason is because of the uncertainty of hourmeter
connection. The VDO is connected to the motor with two wires
that carry the RPM pulse. It is my believe that RPM pulses
are internally analyzed to originate the "motor running"
information to the original hourmeter.

I'm progressing with a mechanical 12V hourmeter and a small
12V relay connected to the alternator output.

Why not just wire it directly to the "ignition switch"? When the
switch is on the hour meter runs, when it is off it doesn't.
Cheers,

Bruce
(bruceinbangkokatgmaildotcom)


My design is based on a real "motor running" hourmetering,
while, your proposal is to consider the "power to the
engine" equal to "engine running", that is almost true.

I've been captured by VDO electronic design, and lost the
practical side of the problem.
Thanks
Dino


stevebucknor1 January 5th 11 03:37 AM

One of the most common is via a newsreader (e.g. Outlook Express). Therefore it is important to include the details of the post to which you are replying, so newsreaders can interpret them correctly. It is really amazing and outstanding.

Nigel Molesworth[_2_] January 5th 11 06:45 PM

VDO tachometer-hourmeter with bad display
 
On Mon, 27 Dec 2010 11:30:40 +0100, Dino
wrote:

The reason is because of the uncertainty of hourmeter
connection. The VDO is connected to the motor with two wires
that carry the RPM pulse. It is my believe that RPM pulses
are internally analyzed to originate the "motor running"
information to the original hourmeter.


Although this is possible, it is most unlikely. Just use the igntion
feed, it will be wrong by a few seconds every few hours at most.

--
Nigel M

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