I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil pressure
conditions. What would be the easiest and cheapest way to accomplish this?

Either by shutting off the air or fuel supply? I'm sure you could use some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

--
A7N8X-Deluxe, AMD XP2500+ (Un-locked)
2x256mb Crucial PC3200 DDR ram
Palit-Daytona Ti4200/64M AGP

SomeBody wrote:
I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil pressure
conditions. What would be the easiest and cheapest way to accomplish this?

Either by shutting off the air or fuel supply? I'm sure you could use some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos


Try here- good stuff.

http://www.fwmurphy.co.uk/products/g...t_controls.htm

John

On Fri, 17 Jun 2005 18:03:03 +0000, Ignoramus12712 wrote:

On Fri, 17 Jun 2005 17:39:15 GMT, SomeBody wrote:
I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil pressure
conditions. What would be the easiest and cheapest way to accomplish this?

Either by shutting off the air or fuel supply? I'm sure you could use some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Yea, how do you stop your engine now? What exactly happens when you
decide "it is time to stop the engine"? You probably press some button
or pull some lever, and then what happens?

i

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos



Are you being a smart ass??? or am I reading your words incorrectly?

Let me explain how my engine has the speed lever set, you slide the lever
down and tighten a knob (twisting) that passes through the lever. If I was
NOT present to monitor the oil pressure and needed to shut it down to
prevent damage to engine, who would turn this knob to release the lever?
You?

This is why I was asking on how to go about doing this task? What method
would do the job and what parts could be used?

Thanks for your input.

--
A7N8X-Deluxe, AMD XP2500+ (Un-locked)
2x256mb Crucial PC3200 DDR ram
Palit-Daytona Ti4200/64M AGP

SomeBody wrote:

Yea, how do you stop your engine now? What exactly happens when you
decide "it is time to stop the engine"? You probably press some button
or pull some lever, and then what happens?

i





Let me explain how my engine has the speed lever set, you slide the lever
down and tighten a knob (twisting) that passes through the lever. If I was
NOT present to monitor the oil pressure and needed to shut it down to
prevent damage to engine, who would turn this knob to release the lever?
You?



That is a pretty crude mechanism. Cutting off fuel to the fuel pump may
take
a minute to shut the engine down, which seems too long. You need to
modify this
speed control mechanism so it doesn't require tightening knobs.
Probably the best,
if this engine is manually started, is to use a solenoid that will hold
the speed
lever in the right position when the juice is on, and drop it when power
is cut off.
Wire an oil pressure switch with normally closed contacts (normal in
this case
taken to mean oil pressure OK) in series with the solenoid and battery.
After starting
the engine and developing normal oil pressure, you pull the lever to
operating speed
and the solenoid holds it. If the solenoid burns out, the battery goes
dead, a wire
falls off from vibration, etc. the engine will be shut down. You could
wire a
normally closed push button in series with the rest of the parts as a manual
shutdown switch, so you don't have to overpower the solenoid to shut it off.

If this engine has an idle position to the speed lever, you have to make
sure a
spring or whatever pulls it all the way to the shutdown position on oil
pressure
failure.

Jon

On Fri, 17 Jun 2005 17:31:25 -0500, Jon Elson wrote:



SomeBody wrote:

Yea, how do you stop your engine now? What exactly happens when you
decide "it is time to stop the engine"? You probably press some button
or pull some lever, and then what happens?

i





Let me explain how my engine has the speed lever set, you slide the lever
down and tighten a knob (twisting) that passes through the lever. If I was
NOT present to monitor the oil pressure and needed to shut it down to
prevent damage to engine, who would turn this knob to release the lever?
You?



That is a pretty crude mechanism. Cutting off fuel to the fuel pump may
take
a minute to shut the engine down, which seems too long. You need to
modify this
speed control mechanism so it doesn't require tightening knobs.
Probably the best,
if this engine is manually started, is to use a solenoid that will hold
the speed
lever in the right position when the juice is on, and drop it when power
is cut off.
Wire an oil pressure switch with normally closed contacts (normal in
this case
taken to mean oil pressure OK) in series with the solenoid and battery.
After starting
the engine and developing normal oil pressure, you pull the lever to
operating speed
and the solenoid holds it. If the solenoid burns out, the battery goes
dead, a wire
falls off from vibration, etc. the engine will be shut down. You could
wire a
normally closed push button in series with the rest of the parts as a manual
shutdown switch, so you don't have to overpower the solenoid to shut it off.

If this engine has an idle position to the speed lever, you have to make
sure a
spring or whatever pulls it all the way to the shutdown position on oil
pressure
failure.

Jon

Jon,

This is a great flow of idea that haven't crossed my mind!
I thank you for the input and have something to work with now.


--
A7N8X-Deluxe, AMD XP2500+ (Un-locked)
2x256mb Crucial PC3200 DDR ram
Palit-Daytona Ti4200/64M AGP

On Sat, 18 Jun 2005 01:58:50 +0000, Ignoramus12712 wrote:

On Fri, 17 Jun 2005 21:53:59 GMT, SomeBody wrote:
On Fri, 17 Jun 2005 18:03:03 +0000, Ignoramus12712 wrote:

On Fri, 17 Jun 2005 17:39:15 GMT, SomeBody wrote:
I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil pressure
conditions. What would be the easiest and cheapest way to accomplish this?

Either by shutting off the air or fuel supply? I'm sure you could use some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Yea, how do you stop your engine now? What exactly happens when you
decide "it is time to stop the engine"? You probably press some button
or pull some lever, and then what happens?

i

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos



Are you being a smart ass??? or am I reading your words incorrectly?

you are reading my words incorrectly. The reason why I asked you how
you stop your engine now, is that the automatic stop mechanism would
need to do a similar thing to what you do manually. For example, when I
want to stop my onan DJE, I disengage the switch that supplies
electricity to the holding coil of the fuel shutoff solenoid.

That releases the solenoid, makes the solenoid push on the fuel
control lever, which shuts down fuel. The engine stops in 2 or so
seconds. Hence, automatic shutdown mechanism is doing the same thing,
namely, interrupts electricity to the holding coil.

If your stopping mechanism is different, then you would need a
different solution.


Let me explain how my engine has the speed lever set, you slide the lever
down and tighten a knob (twisting) that passes through the lever. If I was
NOT present to monitor the oil pressure and needed to shut it down to
prevent damage to engine, who would turn this knob to release the lever?
You?

This is why I was asking on how to go about doing this task? What method
would do the job and what parts could be used?

To know what method would do the job, it is important to know how the
job is done manually.

i


Then, let me apologize for any remarks that I wrote in regards to your
response. I'll post some pictures of the speed control on my engine
tomorrow.

Thanks.



--
A7N8X-Deluxe, AMD XP2500+ (Un-locked)
2x256mb Crucial PC3200 DDR ram
Palit-Daytona Ti4200/64M AGP

"SomeBody" wrote in message
news
On Sat, 18 Jun 2005 01:58:50 +0000, Ignoramus12712 wrote:

On Fri, 17 Jun 2005 21:53:59 GMT, SomeBody
wrote:
On Fri, 17 Jun 2005 18:03:03 +0000, Ignoramus12712 wrote:

On Fri, 17 Jun 2005 17:39:15 GMT, SomeBody
wrote:
I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil
pressure
conditions. What would be the easiest and cheapest way to accomplish
this?

Either by shutting off the air or fuel supply? I'm sure you could use
some
kind of "fuel line solenoid" to cut off the supply of fuel. Any
ideas?

Yea, how do you stop your engine now? What exactly happens when you
decide "it is time to stop the engine"? You probably press some button
or pull some lever, and then what happens?

i

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos



Are you being a smart ass??? or am I reading your words incorrectly?

you are reading my words incorrectly. The reason why I asked you how
you stop your engine now, is that the automatic stop mechanism would
need to do a similar thing to what you do manually. For example, when I
want to stop my onan DJE, I disengage the switch that supplies
electricity to the holding coil of the fuel shutoff solenoid.

That releases the solenoid, makes the solenoid push on the fuel
control lever, which shuts down fuel. The engine stops in 2 or so
seconds. Hence, automatic shutdown mechanism is doing the same thing,
namely, interrupts electricity to the holding coil.

If your stopping mechanism is different, then you would need a
different solution.


Let me explain how my engine has the speed lever set, you slide the lev
er
down and tighten a knob (twisting) that passes through the lever. If I
was
NOT present to monitor the oil pressure and needed to shut it down to
prevent damage to engine, who would turn this knob to release the
lever?
You?

This is why I was asking on how to go about doing this task? What
method
would do the job and what parts could be used?

To know what method would do the job, it is important to know how the
job is done manually.

i


Then, let me apologize for any remarks that I wrote in regards to your
response. I'll post some pictures of the speed control on my engine
tomorrow.

Thanks.


Very gentlemanly of you to offer your apology. Ignoramus12712 is one of
the more polite people on the board and has shown very nice manners and
appreciates all concepts offered.

Harold

In article , Harold and Susan Vordos says...

Very gentlemanly of you to offer your apology. Ignoramus12712 is one of
the more polite people on the board and has shown very nice manners and
appreciates all concepts offered.

Indeed. I think the problem is, the issue being discussed
is reasonably complicated so that it requires a first-principles
approach.

This means asking specific questions that make no assumptions
at all. Unfortunately this sometimes makes the question asker seem
totally retarded.

I understand this effect well because I do it a lot at work.

Sometimes the only way to "get to the bottom of it" is to
look like a total retard. :^)

Jim


--
==================================================
please reply to:
JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com
==================================================

SomeBody wrote:
I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil pressure
conditions. What would be the easiest and cheapest way to accomplish this?

Either by shutting off the air or fuel supply? I'm sure you could use some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

To stop a diesel you don't need to shut down the fuel, merely stop the
air flow. Worked for the diesel gen sets I ran in Vietnam and works for
an emergency shutdown for the 8V-92 Detroit in the bus here on campus.
Merely rig a flapper over the air intake (needs to be a positive seal)
that is spring loaded to close, use a solenoid to keep the trip
mechanism armed until oil pressure falls below a preset point, then trip
and let the flap stop all air.

You can buy a oil pressure guage with adjustable stop point so that you
stop at some point before zero pressure is reached. Avoid oil starvation
damage that way.

Georg V.

George wrote:
SomeBody wrote:

I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil pressure
conditions. What would be the easiest and cheapest way to accomplish
this?

Either by shutting off the air or fuel supply? I'm sure you could use
some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

To stop a diesel you don't need to shut down the fuel, merely stop the
air flow. Worked for the diesel gen sets I ran in Vietnam and works for
an emergency shutdown for the 8V-92 Detroit in the bus here on campus.
Merely rig a flapper over the air intake (needs to be a positive seal)
that is spring loaded to close, use a solenoid to keep the trip
mechanism armed until oil pressure falls below a preset point, then trip
and let the flap stop all air.

Yeah, but that's about the worst way to shut it down. The flap is for
killing a runaway engine, which is one of the charming properties of
Detroits.. Each time you use it you have to manually reset it (as it's
set up on the Detroit anyway, but you could set one up that resets
itself) and you'll put a lot of fuel in the oil doing it too.

John

You can buy a oil pressure guage with adjustable stop point so that you
stop at some point before zero pressure is reached. Avoid oil starvation
damage that way.

Georg V.

To stop a diesel you don't need to shut down the fuel, merely stop the
air flow. Worked for the diesel gen sets I ran in Vietnam and works for
an emergency shutdown for the 8V-92 Detroit in the bus here on campus.
Merely rig a flapper over the air intake (needs to be a positive seal)
that is spring loaded to close, use a solenoid to keep the trip
mechanism armed until oil pressure falls below a preset point, then trip
and let the flap stop all air.


Most of the 6-71 GM diesels that drove the smaller drilling rigs had air
shut of butterflies on the air intake manifolds. This was so that they
could be shut down even if natural gas came into the air intakes
insufficient quantities to keep it running if the fuel was shut off. It was
an important safety feature in the event of a blow out.
Apparently, it was as a result of a case where the diesels were shut off
during a blow out and didn't stop until a con rod came out of the side of
the crankcase and the ensuing sparks sent the whole lot up .

Regards

Tom

JohnM wrote:
George wrote:

SomeBody wrote:

I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil pressure
conditions. What would be the easiest and cheapest way to accomplish
this?

Either by shutting off the air or fuel supply? I'm sure you could use
some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

To stop a diesel you don't need to shut down the fuel, merely stop the
air flow. Worked for the diesel gen sets I ran in Vietnam and works
for an emergency shutdown for the 8V-92 Detroit in the bus here on
campus. Merely rig a flapper over the air intake (needs to be a
positive seal) that is spring loaded to close, use a solenoid to keep
the trip mechanism armed until oil pressure falls below a preset
point, then trip and let the flap stop all air.


Yeah, but that's about the worst way to shut it down. The flap is for
killing a runaway engine, which is one of the charming properties of
Detroits.. Each time you use it you have to manually reset it (as it's
set up on the Detroit anyway, but you could set one up that resets
itself) and you'll put a lot of fuel in the oil doing it too.

John


You can buy a oil pressure guage with adjustable stop point so that
you stop at some point before zero pressure is reached. Avoid oil
starvation damage that way.

Georg V.
What you said is right on the mark, but wasn't the OP worried about
shutting down in the case of oil pressure loss?? That doesn't happen
unless something has gone badly awry and in my mind at least that calls
for stopping motion as quickly as possible to minimize damage. You
wouldn't want an automatic restart condition, rather you would want to
determine the cause and correct before a restart. And oil loss would
cause me to want to drain and check the lower end, if not more.

George V.

George wrote:
JohnM wrote:

George wrote:

SomeBody wrote:

I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil
pressure
conditions. What would be the easiest and cheapest way to accomplish
this?

Either by shutting off the air or fuel supply? I'm sure you could
use some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

To stop a diesel you don't need to shut down the fuel, merely stop
the air flow. Worked for the diesel gen sets I ran in Vietnam and
works for an emergency shutdown for the 8V-92 Detroit in the bus here
on campus. Merely rig a flapper over the air intake (needs to be a
positive seal) that is spring loaded to close, use a solenoid to keep
the trip mechanism armed until oil pressure falls below a preset
point, then trip and let the flap stop all air.



Yeah, but that's about the worst way to shut it down. The flap is for
killing a runaway engine, which is one of the charming properties of
Detroits.. Each time you use it you have to manually reset it (as it's
set up on the Detroit anyway, but you could set one up that resets
itself) and you'll put a lot of fuel in the oil doing it too.

John


You can buy a oil pressure guage with adjustable stop point so that
you stop at some point before zero pressure is reached. Avoid oil
starvation damage that way.

Georg V.

What you said is right on the mark, but wasn't the OP worried about
shutting down in the case of oil pressure loss?? That doesn't happen
unless something has gone badly awry and in my mind at least that calls
for stopping motion as quickly as possible to minimize damage. You
wouldn't want an automatic restart condition, rather you would want to
determine the cause and correct before a restart. And oil loss would
cause me to want to drain and check the lower end, if not more.

George V.

Ah, true. Somehow I took your original statement as a suggestion to use
this as a regular method of killing the engine. If set up with care,
such as ensuring that the crankcase vent wouldn't allow the engine to
continue running, it would likely work well.

John

"Ignoramus2662" wrote in message
...
On Sat, 18 Jun 2005 01:45:26 -0700, Harold and Susan Vordos
wrote:
Very gentlemanly of you to offer your apology. Ignoramus12712 is one
of
the more polite people on the board and has shown very nice manners and
appreciates all concepts offered.

Thank you for your kind words.

i

My pleasure.. In my opinion, you have earned them.

Harold

Tom Miller wrote:
To stop a diesel you don't need to shut down the fuel, merely stop the
air flow. Worked for the diesel gen sets I ran in Vietnam and works for
an emergency shutdown for the 8V-92 Detroit in the bus here on campus.
Merely rig a flapper over the air intake (needs to be a positive seal)
that is spring loaded to close, use a solenoid to keep the trip
mechanism armed until oil pressure falls below a preset point, then trip
and let the flap stop all air.



Most of the 6-71 GM diesels that drove the smaller drilling rigs had air
shut of butterflies on the air intake manifolds. This was so that they
could be shut down even if natural gas came into the air intakes
insufficient quantities to keep it running if the fuel was shut off. It was
an important safety feature in the event of a blow out.
Apparently, it was as a result of a case where the diesels were shut off
during a blow out and didn't stop until a con rod came out of the side of
the crankcase and the ensuing sparks sent the whole lot up .
Actually, nearly all Detroit 2-stroke Diesels use an air cutoff flap for
emergency shutdown. Some of them even use this as the normal shutdown
mechanism!
I'm not aware of too many others that use this scheme, most others use
some form of locking the exhaust valve(s) open as the emergency stop,
and a stop position or solenoid on the fuel pump.

And, of course, there's the well-known GM passenger car Diesel with NO
emergency shutoff, and recommended procedure of washing the air filter
in kerosene. If you put the filter back before it has dried, engine
go BOOM!

Jon

Jon

On Fri, 17 Jun 2005 17:39:15 +0000, SomeBody wrote:

I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil pressure
conditions. What would be the easiest and cheapest way to accomplish this?

Either by shutting off the air or fuel supply? I'm sure you could use some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

I have taken the access cover off the area that was hiding the speed
control, (didn't know that it was a access cover!), anyhow, It
seems to be a simple looking lever that doesn't move that much. Perhaps a
1/4" of so. I'm sure a solenoid could be used to control the engine speed
and do a SHUTDOWN! when needed.

There doesn't appear to be a return spring of any sorts.

I've uploaded a few pictures of the speed control mechanism to

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

Any tips, comments?


--
A7N8X-Deluxe, AMD XP2500+ (Un-locked)
2x256mb Crucial PC3200 DDR ram
Palit-Daytona Ti4200/64M AGP

On Mon, 20 Jun 2005 19:20:15 +0000, Ignoramus16736 wrote:

On Mon, 20 Jun 2005 18:42:07 GMT, SomeBody wrote:
On Fri, 17 Jun 2005 17:39:15 +0000, SomeBody wrote:

I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil pressure
conditions. What would be the easiest and cheapest way to accomplish this?

Either by shutting off the air or fuel supply? I'm sure you could use some
kind of "fuel line solenoid" to cut off the supply of fuel. Any ideas?

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

I have taken the access cover off the area that was hiding the speed
control, (didn't know that it was a access cover!), anyhow, It
seems to be a simple looking lever that doesn't move that much. Perhaps a
1/4" of so. I'm sure a solenoid could be used to control the engine speed
and do a SHUTDOWN! when needed.

Is there enough space for the solenoid?


Perhaps, all depends on what size pull/push (in/oz, ft/lb) is required to
move the lever. I could alway reverse the lever on the Governor arm, so
as to have the lever on the outside and place the solenoid on the outside
of the access panel. Just some random thoughts.



For a solenoid to work, there has to be current in the solenoid at some
point. What would be the source of such current? Does your engine have a
DC alternator? Or, are you planning on using generated AC current to
control the solenoid? Both DC and AC solenoids can be bought.


I am planning on hooking up a 12V battery so I can use the starter to turn
the engine over. Once power is on, I will probably hook up a battery
charger to charge the battery between uses.


Solenoids usually have only two positions. Your manual
control seems to
have three positions (OFF, START and RUN). That could be another problem
for the use of solenoid.


When I was messing with the control arm, with the access panel off, I
noticed that there was much difference between START and RUN. The lever
didn't seem to move any, but will have to test this when the engine is
started next.


The above questions aside, let's say that you had a solenoid there that
could push or pull the lever when necessary. Would its operation be
impeded by the manual control? In other words, if the manual control is
rigidly connected to the lever (I could not see well), would such rigid
connection not make solenoid's work impossible?


If possible, I would hook up a "low oil pressure' bypass switch, so I can
start the engine with the solenoid engaged. and once oil pressure has
built up to prevent the solenoid from shutting down, release the bypass
switch and have the peace of mind.


Are you planning on removing manual
control altogether, or are you
planning on using manual control for regular operation and to fit the
solenoid for emergency shutdown in addition?

i


I would like to do away with the manual control altogether, no need for a
redundant speed control, is there?

There doesn't appear to be a return spring of any sorts.

I've uploaded a few pictures of the speed control mechanism to

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

Any tips, comments?




Thanks for your input, very helpful in my quest for this feature I'm
wanting to implement.


--
A7N8X-Deluxe, AMD XP2500+ (Un-locked)
2x256mb Crucial PC3200 DDR ram
Palit-Daytona Ti4200/64M AGP

On Mon, 20 Jun 2005 19:23:39 +0000, Ignoramus16736 wrote:

One more question, what is the force that is necessary to engage or
disengage the speed lever? (in pounds).

Solenoids are rated for particular forces and your mention that the
lever moves about 1/4" is suggestive that it takes substantial force
to move it. That may require a large solenoid.

i

I will need to determine the pull/push of this lever. It didn't take much
finger effort to move this, but then again, the engine was not running at
the time, I don't know if this would make much difference, but will
determine this when the engine is running next.

I will have to come up with some kind of gauge to determine the push/pull,
any ideas?? I'm sure there is some kind of device, (spring?), that is
calibrated for this, perhaps a tool to determine trigger pull on a firearm?

Haven't looked into this yet, but will soon.




On 20 Jun 2005 19:20:15 GMT, Ignoramus16736
wrote:
On Mon, 20 Jun 2005 18:42:07 GMT, SomeBody
wrote:
On Fri, 17 Jun 2005 17:39:15 +0000, SomeBody wrote:

I'm finally getting my generator project wrapped up.

I'm looking for ways for unattended shutdown in case of low oil
pressure conditions. What would be the easiest and cheapest way to
accomplish this?

Either by shutting off the air or fuel supply? I'm sure you could use
some kind of "fuel line solenoid" to cut off the supply of fuel. Any
ideas?

Thanks

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

I have taken the access cover off the area that was hiding the speed
control, (didn't know that it was a access cover!), anyhow, It seems
to be a simple looking lever that doesn't move that much. Perhaps a
1/4" of so. I'm sure a solenoid could be used to control the engine
speed and do a SHUTDOWN! when needed.

Is there enough space for the solenoid?

For a solenoid to work, there has to be current in the solenoid at some
point. What would be the source of such current? Does your engine have
a DC alternator? Or, are you planning on using generated AC current to
control the solenoid? Both DC and AC solenoids can be bought.

Solenoids usually have only two positions. Your manual control seems to
have three positions (OFF, START and RUN). That could be another
problem for the use of solenoid.

The above questions aside, let's say that you had a solenoid there that
could push or pull the lever when necessary. Would its operation be
impeded by the manual control? In other words, if the manual control is
rigidly connected to the lever (I could not see well), would such rigid
connection not make solenoid's work impossible?

Are you planning on removing manual control altogether, or are you
planning on using manual control for regular operation and to fit the
solenoid for emergency shutdown in addition?

i

There doesn't appear to be a return spring of any sorts.

I've uploaded a few pictures of the speed control mechanism to

http://pg.photos.yahoo.com/ph/jeffgnu/my_photos

Any tips, comments?





--
A7N8X-Deluxe, AMD XP2500+ (Un-locked)
2x256mb Crucial PC3200 DDR ram
Palit-Daytona Ti4200/64M AGP

On Tue, 21 Jun 2005 02:07:54 +0000, Ignoramus16736 wrote:

On Tue, 21 Jun 2005 00:43:11 GMT, SomeBody wrote:
On Mon, 20 Jun 2005 19:23:39 +0000, Ignoramus16736 wrote:

One more question, what is the force that is necessary to engage or
disengage the speed lever? (in pounds).

Solenoids are rated for particular forces and your mention that the
lever moves about 1/4" is suggestive that it takes substantial force
to move it. That may require a large solenoid.

i

I will need to determine the pull/push of this lever. It didn't take much
finger effort to move this, but then again, the engine was not running at
the time, I don't know if this would make much difference, but will
determine this when the engine is running next.

I will have to come up with some kind of gauge to determine the push/pull,
any ideas?? I'm sure there is some kind of device, (spring?), that is
calibrated for this, perhaps a tool to determine trigger pull on a firearm?

Haven't looked into this yet, but will soon.

for a pull "down", a regular known weight will work. (such as a food
item). For a pull up, the same plus a small block with a tiny pulley
if you have one.



If a pulley is used, doesn't that change the amount of force required to
lift something? or is that with multiple pulleys?



--
A7N8X-Deluxe, AMD XP2500+ (Un-locked)
2x256mb Crucial PC3200 DDR ram
Palit-Daytona Ti4200/64M AGP

On Tue, 21 Jun 2005 03:54:20 GMT, SomeBody
wrote:

On Tue, 21 Jun 2005 02:07:54 +0000, Ignoramus16736 wrote:

On Tue, 21 Jun 2005 00:43:11 GMT, SomeBody wrote:
On Mon, 20 Jun 2005 19:23:39 +0000, Ignoramus16736 wrote:

One more question, what is the force that is necessary to engage or
disengage the speed lever? (in pounds).

Solenoids are rated for particular forces and your mention that the
lever moves about 1/4" is suggestive that it takes substantial force
to move it. That may require a large solenoid.

i

I will need to determine the pull/push of this lever. It didn't take much
finger effort to move this, but then again, the engine was not running at
the time, I don't know if this would make much difference, but will
determine this when the engine is running next.

I will have to come up with some kind of gauge to determine the push/pull,
any ideas?? I'm sure there is some kind of device, (spring?), that is
calibrated for this, perhaps a tool to determine trigger pull on a firearm?

Haven't looked into this yet, but will soon.

for a pull "down", a regular known weight will work. (such as a food
item). For a pull up, the same plus a small block with a tiny pulley
if you have one.



If a pulley is used, doesn't that change the amount of force required to
lift something? or is that with multiple pulleys?


Right. A fixed single just changes direction. A single attached to
the load does double the amount of force applied to the load.

Pete Keillor