Merc tach question
 

I started ripping and tearing today on my Lund, replacing plywood, wiring,
and just junk that went nowhere and did nothing. Got a good start on it.

On the tach, I was surprised to find a vacuum line. The globe on the
tachometer is foggy, so I don't have a clue if this was functioning or not.
I was surprised that a tach would be vacuum operated. A VERY long line from
motor to dial.

A couple of questions: How can I check this? Just fire it up in a barrel
of water, and see if there is suction? Put a vacuum gauge on there? (I'd
have to buy one.) Or just put a 1/8" end plug from my gardening stuff on a
shortened stub on the motor, and fergaddabout RPM's, which really don't mean
much to me on a 40. I can hear more than a tach can tell me. A new digital
tach from Northern Tools is about $40, and that would just be $40 that I
could spend on carpet or towards a bimini, or towards upholstery material.
Gas even.

Guess I should take some before and after pics to show everyone. Just
making a silk purse out of a sow's ear, but it needed some dressing up, and
mods.

Steve

Merc tach question
 

On Nov 11, 4:38*pm, "SteveB" wrote:
I started ripping and tearing today on my Lund, replacing plywood, wiring,
and just junk that went nowhere and did nothing. *Got a good start on it.

Merc tach question
 

SteveB wrote:
I started ripping and tearing today on my Lund, replacing plywood, wiring,
and just junk that went nowhere and did nothing. Got a good start on it.

On the tach, I was surprised to find a vacuum line. The globe on the
tachometer is foggy, so I don't have a clue if this was functioning or not.
I was surprised that a tach would be vacuum operated. A VERY long line from
motor to dial.

A couple of questions: How can I check this? Just fire it up in a barrel
of water, and see if there is suction? Put a vacuum gauge on there? (I'd
have to buy one.) Or just put a 1/8" end plug from my gardening stuff on a
shortened stub on the motor, and fergaddabout RPM's, which really don't mean
much to me on a 40. I can hear more than a tach can tell me. A new digital
tach from Northern Tools is about $40, and that would just be $40 that I
could spend on carpet or towards a bimini, or towards upholstery material.
Gas even.

Guess I should take some before and after pics to show everyone. Just
making a silk purse out of a sow's ear, but it needed some dressing up, and
mods.

Steve


Are you sure you aren't looking at a speedometer?

Merc tach question
 

On Wed, 11 Nov 2009 14:56:43 -0800 (PST), Tim
wrote:

On Nov 11, 4:38*pm, "SteveB" wrote:
I started ripping and tearing today on my Lund, replacing plywood, wiring,
and just junk that went nowhere and did nothing. *Got a good start on it.

On the tach, I was surprised to find a vacuum line. *The globe on the
tachometer is foggy, so I don't have a clue if this was functioning or not.
I was surprised that a tach would be vacuum operated. *A VERY long line from
motor to dial.

A couple of questions: *How can I check this? *Just fire it up in a barrel
of water, and see if there is suction? *Put a vacuum gauge on there? *(I'd
have to buy one.) *Or just put a 1/8" end plug from my gardening stuff on a
shortened stub on the motor, and fergaddabout RPM's, which really don't mean
much to me on a 40. *I can hear more than a tach can tell me. *A new digital
tach from Northern Tools is about $40, and that would just be $40 that I
could spend on carpet or towards a bimini, or towards upholstery material.
Gas even.

Guess I should take some before and after pics to show everyone. *Just
making a silk purse out of a sow's ear, but it needed some dressing up, and
mods.

Steve

That s new one on me. I don't see how a tachometer could be made using
vacuum. the tach is almost always electric unless it was gear driven
from a diesel injector pump or early type distributors. and I'd count
that one out. But the tach is electric and should be running from the
inside of the distributor where it picks up an impulse from usually #1
cylinder.

Honestly, I'm really skeptical about a vacuum operated tach.

Sounds like he means the speedometer.
--

John H

"Socialism is a philosophy of failure, the creed of ignorance, and the
gospel of envy, its inherent virtue is the equal sharing of misery."

Churchill

Merc tach question
 

On Wed, 11 Nov 2009 18:00:11 -0500, Jim wrote:

SteveB wrote:
I started ripping and tearing today on my Lund, replacing plywood, wiring,
and just junk that went nowhere and did nothing. Got a good start on it.

On the tach, I was surprised to find a vacuum line. The globe on the
tachometer is foggy, so I don't have a clue if this was functioning or not.
I was surprised that a tach would be vacuum operated. A VERY long line from
motor to dial.

A couple of questions: How can I check this? Just fire it up in a barrel
of water, and see if there is suction? Put a vacuum gauge on there? (I'd
have to buy one.) Or just put a 1/8" end plug from my gardening stuff on a
shortened stub on the motor, and fergaddabout RPM's, which really don't mean
much to me on a 40. I can hear more than a tach can tell me. A new digital
tach from Northern Tools is about $40, and that would just be $40 that I
could spend on carpet or towards a bimini, or towards upholstery material.
Gas even.

Guess I should take some before and after pics to show everyone. Just
making a silk purse out of a sow's ear, but it needed some dressing up, and
mods.

Steve


Are you sure you aren't looking at a speedometer?

GMTA.
--

John H

"Socialism is a philosophy of failure, the creed of ignorance, and the
gospel of envy, its inherent virtue is the equal sharing of misery."

Churchill

Merc tach question
 

"Jim" wrote in message
...
SteveB wrote:
I started ripping and tearing today on my Lund, replacing plywood,
wiring, and just junk that went nowhere and did nothing. Got a good
start on it.

On the tach, I was surprised to find a vacuum line. The globe on the
tachometer is foggy, so I don't have a clue if this was functioning or
not. I was surprised that a tach would be vacuum operated. A VERY long
line from motor to dial.

A couple of questions: How can I check this? Just fire it up in a
barrel of water, and see if there is suction? Put a vacuum gauge on
there? (I'd have to buy one.) Or just put a 1/8" end plug from my
gardening stuff on a shortened stub on the motor, and fergaddabout RPM's,
which really don't mean much to me on a 40. I can hear more than a tach
can tell me. A new digital tach from Northern Tools is about $40, and
that would just be $40 that I could spend on carpet or towards a bimini,
or towards upholstery material. Gas even.

Guess I should take some before and after pics to show everyone. Just
making a silk purse out of a sow's ear, but it needed some dressing up,
and mods.

Steve
Are you sure you aren't looking at a speedometer?

Well, then, that's that. It would cost an arm and a leg to get a new glass
for this one, and then not be sure if it would work. My GPS does the same
thing, and is pretty accurate.

Steve

Merc tach question
 

On Nov 12, 12:42*am, "SteveB" wrote:
"Jim" wrote in message

...





SteveB wrote:
I started ripping and tearing today on my Lund, replacing plywood,
wiring, and just junk that went nowhere and did nothing. *Got a good
start on it.

On the tach, I was surprised to find a vacuum line. *The globe on the
tachometer is foggy, so I don't have a clue if this was functioning or
not. I was surprised that a tach would be vacuum operated. *A VERY long
line from motor to dial.

A couple of questions: *How can I check this? *Just fire it up in a
barrel of water, and see if there is suction? *Put a vacuum gauge on
there? *(I'd have to buy one.) *Or just put a 1/8" end plug from my
gardening stuff on a shortened stub on the motor, and fergaddabout RPM's,
which really don't mean much to me on a 40. *I can hear more than a tach
can tell me. *A new digital tach from Northern Tools is about $40, and
that would just be $40 that I could spend on carpet or towards a bimini,
or towards upholstery material. Gas even.

Guess I should take some before and after pics to show everyone. *Just
making a silk purse out of a sow's ear, but it needed some dressing up,
and mods.

Steve
Are you sure you aren't looking at a speedometer?

Well, then, that's that. *It would cost an arm and a leg to get a new glass
for this one, and then not be sure if it would work. *My GPS does the same
thing, and is pretty accurate.

Steve- Hide quoted text -

- Show quoted text -

Most of this are not sealed. Talke it out and leave it on top of a
heater vent for a couple days.

Unless you mean the glass has deposits on the inside. They can be
disassembed by carefully bending out from the back side the crimped
ring that holds the glass to the plastic.