Today's Message Index:
----------------------
1. 08:13 AM - Re: Water resistant D-Sub (William Hunter)
2. 09:55 AM - Choosing a solenoid (Ernest Christley)
3. 11:52 AM - Re: Choosing a solenoid (Sebastien)
4. 12:42 PM - Re: Choosing a solenoid (Ernest Christley)
5. 01:22 PM - Re: Choosing a solenoid (Ernest Christley)
6. 04:52 PM - Re: Choosing a solenoid (Charlie England)
7. 05:19 PM - Re: Choosing a solenoid (Ernest Christley)
Message 1
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| Subject: | Re: Water resistant D-Sub |
Thanks Bob for your kind offer! I already ordered some from Amazon Aircraft
Supply but I greatly appreciate the offer and all of the advice
Thanks,
Bill Hunter
On Wed, Apr 17, 2019, 19:18 Charlie England <ceengland7@gmail.com> wrote:
> On 4/17/2019 6:24 PM, Robert L. Nuckolls, III wrote:
>
> At 05:29 PM 4/17/2019, you wrote:
>
> Bill, there are little female connectors (basically nuts) that you can
> screw both the affixing screws into joining the two shells together.
> Suggested to use thread locker with these. I think B&C carries them.
>
> S8013-hex
>
>
> Yeah. Looks like these
>
>
> Got a boat load. Send me an address and
> quantity needed. I'll drop them in the mail.
>
>
> Bob . . .
>
> I really like Dsubs, but I really hate the standard attachment method
> (tiny, sloppily slotted screws). For some chassis mounts, and most in-lin
e
> pairs, I really like 'bale' style latches. Here's one source:
>
> https://www.google.com/url?sa=i&source=images&cd=&cad=rja&uact=
8&ved=2ahUKEwjYlKi7xNjhAhXLTN8KHfiPCrsQjRx6BAgBEAU&url=https%3A%2F%2Fww
w.newark.com%2Fcooper-interconnect%2F17-529%2Fd-sub-spring-latch%2Fdp%2F39F
1390&psig=AOvVaw064bp5kfjSPGEFC3WoLuOE&ust=1555638852183307
>
> May require modifying the backshell slightly.
>
> Charlie
>
>
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm
_campaign=sig-email&utm_content=emailclient&utm_term=icon> Virus-free
.
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Message 2
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| Subject: | Choosing a solenoid |
I replace an Aerovee carb with an Ellison TBI.=C2- The engine runs much s
moother, and fired up with even EGTs once I got it primed.=C2- I didn't h
ave a prime on the Aerovee, since the thing starts pouring fuel as soon as
you open the shutoff valve, so priming was just a matter of waiting a coupl
e seconds before cranking.=C2- Instead, I got her running by pouring the
fuel from my sump drainer into the intake air box.=C2- Not the safest thi
ng in the world to be doing, indicating a need for a real primer circuit.
=C2- I have an electric primer pump on hand, and I could just run a small
tube into the airbox to dump fuel right in front of the carbs intake.=C2
- This will require a momentary switch and a wire run, as well as a bunch
of fuel plumbing.=C2-
However, Rotec built a different type of primer into their version of the E
llison.=C2- It is a bulb that inflates a diaphragm, opening the fuel valv
e.=C2- For those not familiar with the Ellison, the diaphragm is inflated
by incoming air pressure while the engine is running, and serves as a shut
off after engine shutdown.=C2- I was thinking of modifying my Ellison to
play along the same line as Rotec.
The problem I have with airplane primers is that we dump some fuel in the i
ntake.=C2- How much to dump is an obfuscated educated guess.=C2- We pus
h a button or pump a handle a certain amount based on experience of how tha
t amount of pushing or pumping has worked in the past, without really knowi
ng how much is added.=C2- The downside of this approach is documented by
POHs having a section dedicated to what to do when the over priming catches
fire.=C2- Rotec's strategy has the same issue as all other primers.
So, if instead of a bulb, I mounted a plunger type servo on the diaphragm c
over plate and tie that servo to the starter circuit.=C2- When I pushed t
he starter switch, the plunger would extend to push the diaphragm.=C2- Th
e fuel valve would then only open when the starter was engaged.=C2- Fuel
would never be dumped in the intake unless air was being moved through the
engine.=C2- This seems to remove most of the chance of a fire caused by o
ver priming.
I'm thinking a solenoid like this one would work.=C2- Small Push-Pull So
lenoid - 12VDC=C2- but would like to see if there are any other suggestio
ns.=C2-
|
|
|
| $14.87 | |
|
|
|
| |
Small Push-Pull Solenoid - 12VDC
Solenoids are basically electromagnets: they are made of a big coil of copp
er wire with an armature (a slug of m...
|
|
|
Message 3
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| Subject: | Re: Choosing a solenoid |
That's brilliant. I assume you will run the power to this plunger through a
switch so you can decide whether or not it actuates on any given start?
On Thu, Apr 18, 2019, 13:03 Ernest Christley <echristley@att.net> wrote:
> I replace an Aerovee carb with an Ellison TBI. The engine runs much
> smoother, and fired up with even EGTs once I got it primed. I didn't hav
e
> a prime on the Aerovee, since the thing starts pouring fuel as soon as yo
u
> open the shutoff valve, so priming was just a matter of waiting a couple
> seconds before cranking. Instead, I got her running by pouring the fuel
> from my sump drainer into the intake air box. Not the safest thing in th
e
> world to be doing, indicating a need for a real primer circuit. I have a
n
> electric primer pump on hand, and I could just run a small tube into the
> airbox to dump fuel right in front of the carbs intake. This will requir
e
> a momentary switch and a wire run, as well as a bunch of fuel plumbing.
>
> However, Rotec built a different type of primer into their version of the
> Ellison. It is a bulb that inflates a diaphragm, opening the fuel valve.
> For those not familiar with the Ellison, the diaphragm is inflated by
> incoming air pressure while the engine is running, and serves as a shutof
f
> after engine shutdown. I was thinking of modifying my Ellison to play
> along the same line as Rotec.
>
> The problem I have with airplane primers is that we dump some fuel in the
> intake. How much to dump is an obfuscated educated guess. We push a
> button or pump a handle a certain amount based on experience of how that
> amount of pushing or pumping has worked in the past, without really knowi
ng
> how much is added. The downside of this approach is documented by POHs
> having a section dedicated to what to do when the over priming catches
> fire. Rotec's strategy has the same issue as all other primers.
>
> So, if instead of a bulb, I mounted a plunger type servo on the diaphragm
> cover plate and tie that servo to the starter circuit. When I pushed the
> starter switch, the plunger would extend to push the diaphragm. The fuel
> valve would then only open when the starter was engaged. Fuel would neve
r
> be dumped in the intake unless air was being moved through the engine.
> This seems to remove most of the chance of a fire caused by over priming.
>
> I'm thinking a solenoid like this one would work. Small Push-Pull
> Solenoid - 12VDC
> <https://www.amazon.com/Adafruit-Industries-412-Push-Pull-Solenoid/dp/B00
R5CICX8/ref=pd_rhf_se_s_pd_crcd_0_3/141-8437165-5384219?_encoding=UTF8&
pd_rd_i=B00R5CICX8&pd_rd_r=220a3399-df65-40db-873a-ca1a3c167ca8&pd_rd_w
=xadqd&pd_rd_wg=lpM9z&pf_rd_p=36c62ed8-9692-4b91-aa9a-c4b3b85cc759&pf
_rd_r=CQJW628PAYAAZT8G6M1N&psc=1&refRID=CQJW628PAYAAZT8G6M1N>
> but would like to see if there are any other suggestions.
>
> $14.87
> Small Push-Pull Solenoid - 12VDC
>
> Solenoids are basically electromagnets: they are made of a big coil of
> copper wire with an armature (a slug of m...
>
> <https://www.amazon.com/Adafruit-Industries-412-Push-Pull-Solenoid/dp/B00
R5CICX8/ref=pd_rhf_se_s_pd_crcd_0_3/141-8437165-5384219?_encoding=UTF8&
pd_rd_i=B00R5CICX8&pd_rd_r=220a3399-df65-40db-873a-ca1a3c167ca8&pd_rd_w
=xadqd&pd_rd_wg=lpM9z&pf_rd_p=36c62ed8-9692-4b91-aa9a-c4b3b85cc759&pf
_rd_r=CQJW628PAYAAZT8G6M1N&psc=1&refRID=CQJW628PAYAAZT8G6M1N>
>
>
Message 4
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| Subject: | Re: Choosing a solenoid |
With an Ellison, the engine won't start without some sort of fuel supply.
It needs air flowing through it to create the pressure behind the diaphragm
to open the fuel valve.=C2- It is something of a chicken-and-egg problem
for the design.=C2- Whether opening the valve at starter engagement will
be enough fuel to start is an open question.=C2- If it isn't, I'll be ab
le to run a wire inside to a momentary switch for a more traditional primer
setup.
At this point though, I'm sort of stuck on finding an adequate solenoid.
On Thursday, April 18, 2019, 2:53:10 PM EDT, Sebastien <cluros@gmail.co
m> wrote:
That's brilliant. I assume you will run the power to this plunger through
a switch so you can decide whether or not it actuates on any given start?
On Thu, Apr 18, 2019, 13:03 Ernest Christley <echristley@att.net> wrote:
I replace an Aerovee carb with an Ellison TBI.=C2- The engine runs much s
moother, and fired up with even EGTs once I got it primed.=C2- I didn't h
ave a prime on the Aerovee, since the thing starts pouring fuel as soon as
you open the shutoff valve, so priming was just a matter of waiting a coupl
e seconds before cranking.=C2- Instead, I got her running by pouring the
fuel from my sump drainer into the intake air box.=C2- Not the safest thi
ng in the world to be doing, indicating a need for a real primer circuit.
=C2- I have an electric primer pump on hand, and I could just run a small
tube into the airbox to dump fuel right in front of the carbs intake.=C2
- This will require a momentary switch and a wire run, as well as a bunch
of fuel plumbing.=C2-
However, Rotec built a different type of primer into their version of the E
llison.=C2- It is a bulb that inflates a diaphragm, opening the fuel valv
e.=C2- For those not familiar with the Ellison, the diaphragm is inflated
by incoming air pressure while the engine is running, and serves as a shut
off after engine shutdown.=C2- I was thinking of modifying my Ellison to
play along the same line as Rotec.
The problem I have with airplane primers is that we dump some fuel in the i
ntake.=C2- How much to dump is an obfuscated educated guess.=C2- We pus
h a button or pump a handle a certain amount based on experience of how tha
t amount of pushing or pumping has worked in the past, without really knowi
ng how much is added.=C2- The downside of this approach is documented by
POHs having a section dedicated to what to do when the over priming catches
fire.=C2- Rotec's strategy has the same issue as all other primers.
So, if instead of a bulb, I mounted a plunger type servo on the diaphragm c
over plate and tie that servo to the starter circuit.=C2- When I pushed t
he starter switch, the plunger would extend to push the diaphragm.=C2- Th
e fuel valve would then only open when the starter was engaged.=C2- Fuel
would never be dumped in the intake unless air was being moved through the
engine.=C2- This seems to remove most of the chance of a fire caused by o
ver priming.
I'm thinking a solenoid like this one would work.=C2- Small Push-Pull So
lenoid - 12VDC=C2- but would like to see if there are any other suggestio
ns.=C2-
|
|
|
| $14.87 | |
|
|
|
| |
Small Push-Pull Solenoid - 12VDC
Solenoids are basically electromagnets: they are made of a big coil of copp
er wire with an armature (a slug of m...
|
|
|
Message 5
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| Subject: | Re: Choosing a solenoid |
This would be a better choice if it weren't so long.=C2- Mounting would
be really simplified by just drilling and tapping a single hole.
https://www.amazon.com/uxcell-XRN-2-5-Linear-Solenoid-Electromagnet/dp/B07D
M75BKK/ref=pd_sim_328_6/141-8437165-5384219?_encoding=UTF8&pd_rd_i=B0
7DM7M8M5&pd_rd_r=2bea8050-6213-11e9-b7b1-9768eea003d5&pd_rd_w=85TrC&pd_
rd_wg=Vi86G&pf_rd_p=90485860-83e9-4fd9-b838-b28a9b7fda30&pf_rd_r=ZWMY
PS2EGJX5RD254Y64&refRID=ZWMYPS2EGJX5RD254Y64&th=1
On Thursday, April 18, 2019, 3:43:30 PM EDT, Ernest Christley <echristl
ey@att.net> wrote:
With an Ellison, the engine won't start without some sort of fuel supply.
It needs air flowing through it to create the pressure behind the diaphrag
m to open the fuel valve.=C2- It is something of a chicken-and-egg proble
m for the design.=C2- Whether opening the valve at starter engagement wil
l be enough fuel to start is an open question.=C2- If it isn't, I'll be a
ble to run a wire inside to a momentary switch for a more traditional prime
r setup.
At this point though, I'm sort of stuck on finding an adequate solenoid.
On Thursday, April 18, 2019, 2:53:10 PM EDT, Sebastien <cluros@gmail.co
m> wrote:
That's brilliant. I assume you will run the power to this plunger through
a switch so you can decide whether or not it actuates on any given start?
On Thu, Apr 18, 2019, 13:03 Ernest Christley <echristley@att.net> wrote:
I replace an Aerovee carb with an Ellison TBI.=C2- The engine runs much s
moother, and fired up with even EGTs once I got it primed.=C2- I didn't h
ave a prime on the Aerovee, since the thing starts pouring fuel as soon as
you open the shutoff valve, so priming was just a matter of waiting a coupl
e seconds before cranking.=C2- Instead, I got her running by pouring the
fuel from my sump drainer into the intake air box.=C2- Not the safest thi
ng in the world to be doing, indicating a need for a real primer circuit.
=C2- I have an electric primer pump on hand, and I could just run a small
tube into the airbox to dump fuel right in front of the carbs intake.=C2
- This will require a momentary switch and a wire run, as well as a bunch
of fuel plumbing.=C2-
However, Rotec built a different type of primer into their version of the E
llison.=C2- It is a bulb that inflates a diaphragm, opening the fuel valv
e.=C2- For those not familiar with the Ellison, the diaphragm is inflated
by incoming air pressure while the engine is running, and serves as a shut
off after engine shutdown.=C2- I was thinking of modifying my Ellison to
play along the same line as Rotec.
The problem I have with airplane primers is that we dump some fuel in the i
ntake.=C2- How much to dump is an obfuscated educated guess.=C2- We pus
h a button or pump a handle a certain amount based on experience of how tha
t amount of pushing or pumping has worked in the past, without really knowi
ng how much is added.=C2- The downside of this approach is documented by
POHs having a section dedicated to what to do when the over priming catches
fire.=C2- Rotec's strategy has the same issue as all other primers.
So, if instead of a bulb, I mounted a plunger type servo on the diaphragm c
over plate and tie that servo to the starter circuit.=C2- When I pushed t
he starter switch, the plunger would extend to push the diaphragm.=C2- Th
e fuel valve would then only open when the starter was engaged.=C2- Fuel
would never be dumped in the intake unless air was being moved through the
engine.=C2- This seems to remove most of the chance of a fire caused by o
ver priming.
I'm thinking a solenoid like this one would work.=C2- Small Push-Pull So
lenoid - 12VDC=C2- but would like to see if there are any other suggestio
ns.=C2-
|
|
|
| $14.87 | |
|
|
|
| |
Small Push-Pull Solenoid - 12VDC
Solenoids are basically electromagnets: they are made of a big coil of copp
er wire with an armature (a slug of m...
|
|
|
Message 6
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| Subject: | Re: Choosing a solenoid |
What's wrong with a simple Bowden (choke) cable on a lever to actuate
the bulb? Only problem is, with no electrons involved, we can't talk
about it here.
Charlie
;-)
On 4/18/2019 3:00 PM, Ernest Christley wrote:
> This would be a better choice if it weren't so long. Mounting would be
> really simplified by just drilling and tapping a single hole.
>
> https://www.amazon.com/uxcell-XRN-2-5-Linear-Solenoid-Electromagnet/dp/B07DM75BKK/ref=pd_sim_328_6/141-8437165-5384219?_encoding=UTF8&pd_rd_i=B07DM7M8M5&pd_rd_r=2bea8050-6213-11e9-b7b1-9768eea003d5&pd_rd_w=85TrC&pd_rd_wg=Vi86G&pf_rd_p=90485860-83e9-4fd9-b838-b28a9b7fda30&pf_rd_r=ZWMYPS2EGJX5RD254Y64&refRID=ZWMYPS2EGJX5RD254Y64&th=1
>
> On Thursday, April 18, 2019, 3:43:30 PM EDT, Ernest Christley
> <echristley@att.net> wrote:
>
>
> With an Ellison, the engine won't start without some sort of fuel
> supply. It needs air flowing through it to create the pressure behind
> the diaphragm to open the fuel valve. It is something of a
> chicken-and-egg problem for the design. Whether opening the valve at
> starter engagement will be enough fuel to start is an open question.
> If it isn't, I'll be able to run a wire inside to a momentary switch
> for a more traditional primer setup.
>
> At this point though, I'm sort of stuck on finding an adequate solenoid.
>
> On Thursday, April 18, 2019, 2:53:10 PM EDT, Sebastien
> <cluros@gmail.com> wrote:
>
>
> That's brilliant. I assume you will run the power to this plunger
> through a switch so you can decide whether or not it actuates on any
> given start?
>
> On Thu, Apr 18, 2019, 13:03 Ernest Christley <echristley@att.net
> <mailto:echristley@att.net>> wrote:
>
> I replace an Aerovee carb with an Ellison TBI. The engine runs
> much smoother, and fired up with even EGTs once I got it primed.
> I didn't have a prime on the Aerovee, since the thing starts
> pouring fuel as soon as you open the shutoff valve, so priming was
> just a matter of waiting a couple seconds before cranking.
> Instead, I got her running by pouring the fuel from my sump
> drainer into the intake air box. Not the safest thing in the
> world to be doing, indicating a need for a real primer circuit. I
> have an electric primer pump on hand, and I could just run a small
> tube into the airbox to dump fuel right in front of the carbs
> intake. This will require a momentary switch and a wire run, as
> well as a bunch of fuel plumbing.
>
> However, Rotec built a different type of primer into their version
> of the Ellison. It is a bulb that inflates a diaphragm, opening
> the fuel valve. For those not familiar with the Ellison, the
> diaphragm is inflated by incoming air pressure while the engine is
> running, and serves as a shutoff after engine shutdown. I was
> thinking of modifying my Ellison to play along the same line as Rotec.
>
> The problem I have with airplane primers is that we dump some fuel
> in the intake. How much to dump is an obfuscated educated guess.
> We push a button or pump a handle a certain amount based on
> experience of how that amount of pushing or pumping has worked in
> the past, without really knowing how much is added. The downside
> of this approach is documented by POHs having a section dedicated
> to what to do when the over priming catches fire. Rotec's
> strategy has the same issue as all other primers.
>
> So, if instead of a bulb, I mounted a plunger type servo on the
> diaphragm cover plate and tie that servo to the starter circuit.
> When I pushed the starter switch, the plunger would extend to push
> the diaphragm. The fuel valve would then only open when the
> starter was engaged. Fuel would never be dumped in the intake
> unless air was being moved through the engine. This seems to
> remove most of the chance of a fire caused by over priming.
>
> I'm thinking a solenoid like this one would work.Small Push-Pull
> Solenoid - 12VDC
> <https://www.amazon.com/Adafruit-Industries-412-Push-Pull-Solenoid/dp/B00R5CICX8/ref=pd_rhf_se_s_pd_crcd_0_3/141-8437165-5384219?_encoding=UTF8&pd_rd_i=B00R5CICX8&pd_rd_r=220a3399-df65-40db-873a-ca1a3c167ca8&pd_rd_w=xadqd&pd_rd_wg=lpM9z&pf_rd_p=36c62ed8-9692-4b91-aa9a-c4b3b85cc759&pf_rd_r=CQJW628PAYAAZT8G6M1N&psc=1&refRID=CQJW628PAYAAZT8G6M1N>
> but would like to see if there are any other suggestions.
>
> $14.87
>
>
>
>
> Small Push-Pull Solenoid - 12VDC
>
> Solenoids are basically electromagnets: they are made of a big
> coil of copper wire with an armature (a slug of m...
>
> <https://www.amazon.com/Adafruit-Industries-412-Push-Pull-Solenoid/dp/B00R5CICX8/ref=pd_rhf_se_s_pd_crcd_0_3/141-8437165-5384219?_encoding=UTF8&pd_rd_i=B00R5CICX8&pd_rd_r=220a3399-df65-40db-873a-ca1a3c167ca8&pd_rd_w=xadqd&pd_rd_wg=lpM9z&pf_rd_p=36c62ed8-9692-4b91-aa9a-c4b3b85cc759&pf_rd_r=CQJW628PAYAAZT8G6M1N&psc=1&refRID=CQJW628PAYAAZT8G6M1N>
>
>
---
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Message 7
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| Subject: | Re: Choosing a solenoid |
Activating the primer and starter at the same time is a juggling act.=C2
- So you drop back to the "dump some fuel in the intake and hope it is th
e right amount" method that we're all used to.
On Thursday, April 18, 2019, 4:53:52 PM MST, Charlie England <ceengland
7@gmail.com> wrote:
What's wrong with a simple Bowden (choke) cable on a lever to actuate the
bulb? Only problem is, with no electrons involved, we can't talk about it
here.
Charlie
;-)
On 4/18/2019 3:00 PM, Ernest Christley wrote:
This would be a better choice if it weren't so long.=C2- Mounting would
be really simplified by just drilling and tapping a single hole.
https://www.amazon.com/uxcell-XRN-2-5-Linear-Solenoid-Electromagnet/dp/B0
7DM75BKK/ref=pd_sim_328_6/141-8437165-5384219?_encoding=UTF8&pd_rd_i=
B07DM7M8M5&pd_rd_r=2bea8050-6213-11e9-b7b1-9768eea003d5&pd_rd_w=85TrC&p
d_rd_wg=Vi86G&pf_rd_p=90485860-83e9-4fd9-b838-b28a9b7fda30&pf_rd_r=ZW
MYPS2EGJX5RD254Y64&refRID=ZWMYPS2EGJX5RD254Y64&th=1
On Thursday, April 18, 2019, 3:43:30 PM EDT, Ernest Christley <echris
tley@att.net> wrote:
With an Ellison, the engine won't start without some sort of fuel sup
ply. It needs air flowing through it to create the pressure behind the diap
hragm to open the fuel valve.=C2- It is something of a chicken-and-egg pr
oblem for the design.=C2- Whether opening the valve at starter engagement
will be enough fuel to start is an open question.=C2- If it isn't, I'll
be able to run a wire inside to a momentary switch for a more traditional p
rimer setup.
At this point though, I'm sort of stuck on finding an adequate solenoid.
On Thursday, April 18, 2019, 2:53:10 PM EDT, Sebastien <cluros@gmail.
com> wrote:
That's brilliant. I assume you will run the power to this plunger thro
ugh a switch so you can decide whether or not it actuates on any given star
t?
On Thu, Apr 18, 2019, 13:03 Ernest Christley <echristley@att.net> wrote:
I replace an Aerovee carb with an Ellison TBI.=C2- The engine run
s much smoother, and fired up with even EGTs once I got it primed.=C2- I
didn't have a prime on the Aerovee, since the thing starts pouring fuel as
soon as you open the shutoff valve, so priming was just a matter of waitin
g a couple seconds before cranking.=C2- Instead, I got her running by pou
ring the fuel from my sump drainer into the intake air box.=C2- Not the s
afest thing in the world to be doing, indicating a need for a real primer c
ircuit.=C2- I have an electric primer pump on hand, and I could just run
a small tube into the airbox to dump fuel right in front of the carbs inta
ke.=C2- This will require a momentary switch and a wire run, as well as a
bunch of fuel plumbing.=C2-
However, Rotec built a different type of primer into their version of the
Ellison.=C2- It is a bulb that inflates a diaphragm, opening the fuel va
lve.=C2- For those not familiar with the Ellison, the diaphragm is inflat
ed by incoming air pressure while the engine is running, and serves as a s
hutoff after engine shutdown.=C2- I was thinking of modifying my Ellison
to play along the same line as Rotec.
The problem I have with airplane primers is that we dump some fuel in the
intake.=C2- How much to dump is an obfuscated educated guess.=C2- We p
ush a button or pump a handle a certain amount based on experience of how t
hat amount of pushing or pumping has worked in the past, without really kn
owing how much is added.=C2- The downside of this approach is documented
by POHs having a section dedicated to what to do when the over priming cat
ches fire.=C2- Rotec's strategy has the same issue as all other primers.
So, if instead of a bulb, I mounted a plunger type servo on the diaphragm
cover plate and tie that servo to the starter circuit.=C2- When I pushe
d the starter switch, the plunger would extend to push the diaphragm.=C2-
The fuel valve would then only open when the starter was engaged.=C2- Fu
el would never be dumped in the intake unless air was being moved through t
he engine.=C2- This seems to remove most of the chance of a fire caused b
y over priming.
I'm thinking a solenoid like this one would work.=C2- Small Push-Pull
Solenoid - 12VDC=C2- but would like to see if there are any other suggest
ions.=C2-
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Small Push-Pull Solenoid - 12VDC
Solenoids are basicallyelectromagnets: they are made of a big coil of coppe
r wire with an armature (a slug of m...
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