Today's Message Index:
----------------------
1. 07:32 AM - Re: JPI Fuel flow gage install (A. Dennis Savarese)
2. 09:26 AM - Re: JPI Fuel flow gage install (DaBear)
3. 10:39 AM - Re: JPI Fuel flow gage install (A. Dennis Savarese)
4. 12:19 PM - Re: Low fuel lights on CJ6 (Walter Lannon)
5. 01:29 PM - Re: Low fuel lights on CJ6 (Jon Boede)
6. 09:06 PM - Re: Low fuel lights on CJ6 (Walter Lannon)
Message 1
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| Subject: | Re: JPI Fuel flow gage install |
Greg,
The best place to install the JPI is between the fuel pump and the
carburetor fuel inlet. I have seen them installed before the fuel pump
on the CJ, between the fuel filter and the fuel pump. The reason folks
install it there is because it is easier to install it there than on the
output side of the fuel pump.
There is a way to fit the JPI transducer into the line between the
output of the fuel pump and the carburetor by fabricating two hose
sections. You can make up the hoses using the appropriate size Aeroquip
303 hose (as close as possible to the size of the metric hose) and
AN491-x fittings. All available from Aircraft Spruce. The "x" is the
same size as the hose size. For example, if you are using 303-6 hose,
then you need an AN491-6 fitting. The B-nut on the 491-x fitting is
loose in the fitting kit. You can discard it and replace it with the
metric nut which you must remove from the old hose. Fabricate the ends
that must re-connect to the fuel pump and the carburetor inlet on each
hose section. Remember, you are going to connect the fuel transducer in
between the two hose sections you are fabricating.
Next, using standard AN491-x fittings on the ends of the hose that must
connect to the JPI, fit the two _standard_ AN491-x fittings (you're
going to use the AN B-nuts) to the two sections of hoses which have the
metric B-nuts on the other ends. On the JPI transducer, which I believe
requires 1/4" NPT male fittings, find the appropriate size AN flare
(match the flare size to the standard AN491-x fitting on the hose ) to
1/4" NPT fitting.
I believe the installation instructions for the transducer says it
should be installed as close to horizontal (parallel to the ground) as
possible. So build the hoses to accommodate the installation
requirement which means the two sections of hose that you will fabricate
will be much longer than the one piece hose you remove from the fuel
pump to the carburetor.
Hope this helps.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 5/15/2014 8:29 PM, Greg Wrobel wrote:
>
> Has anyone installed the JPI Fuel Flow Gage on a CJ6? I would think it
> would go between the fuel pump and carburetor but that gets a littler
> crazy trying to go from the CJ fittings to the standard pipe thread on
> the JPI. Another thought is to come from the fuel filter as I was told
> that unit uses the pipe thread. Any thoughts, pictures, parts lists
> or someone who has installed this system that could provide some
> insight. Thanks
>
> *
>
>
> *
Message 2
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| Subject: | JPI Fuel flow gage install |
Also best (besides level) is that there are a couple of inches of straight
hose/tube before and after the transducer so that you are getting consistent
flow (no strange flow from corners).
Bear
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of A. Dennis Savarese
Sent: Friday, May 16, 2014 10:31 AM
Subject: Re: Yak-List: JPI Fuel flow gage install
Greg,
The best place to install the JPI is between the fuel pump and the
carburetor fuel inlet. I have seen them installed before the fuel pump on
the CJ, between the fuel filter and the fuel pump. The reason folks install
it there is because it is easier to install it there than on the output side
of the fuel pump.
There is a way to fit the JPI transducer into the line between the output of
the fuel pump and the carburetor by fabricating two hose sections. You can
make up the hoses using the appropriate size Aeroquip 303 hose (as close as
possible to the size of the metric hose) and AN491-x fittings. All
available from Aircraft Spruce. The "x" is the same size as the hose size.
For example, if you are using 303-6 hose, then you need an AN491-6 fitting.
The B-nut on the 491-x fitting is loose in the fitting kit. You can discard
it and replace it with the metric nut which you must remove from the old
hose. Fabricate the ends that must re-connect to the fuel pump and the
carburetor inlet on each hose section. Remember, you are going to connect
the fuel transducer in between the two hose sections you are fabricating.
Next, using standard AN491-x fittings on the ends of the hose that must
connect to the JPI, fit the two standard AN491-x fittings (you're going to
use the AN B-nuts) to the two sections of hoses which have the metric B-nuts
on the other ends. On the JPI transducer, which I believe requires 1/4" NPT
male fittings, find the appropriate size AN flare (match the flare size to
the standard AN491-x fitting on the hose ) to 1/4" NPT fitting.
I believe the installation instructions for the transducer says it should be
installed as close to horizontal (parallel to the ground) as possible. So
build the hoses to accommodate the installation requirement which means the
two sections of hose that you will fabricate will be much longer than the
one piece hose you remove from the fuel pump to the carburetor.
Hope this helps.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (mobile)
www.yak-52.com <http://www.yak-52.com>
Skype - Yakguy1
On 5/15/2014 8:29 PM, Greg Wrobel wrote:
Has anyone installed the JPI Fuel Flow Gage on a CJ6? I would think it would
go between the fuel pump and carburetor but that gets a littler crazy trying
to go from the CJ fittings to the standard pipe thread on the JPI. Another
thought is to come from the fuel filter as I was told that unit uses the
pipe thread. Any thoughts, pictures, parts lists or someone who has
installed this system that could provide some insight. Thanks
Message 3
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| Subject: | Re: JPI Fuel flow gage install |
Excellent point.
Dennis
Sent from my iPhone
> On May 16, 2014, at 11:25 AM, "DaBear" <dabear@damned.org> wrote:
>
> Also best (besides level) is that there are a couple of inches of straight
hose/tube before and after the transducer so that you are getting consisten
t flow (no strange flow from corners).
>
> Bear
>
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@ma
tronics.com] On Behalf Of A. Dennis Savarese
> Sent: Friday, May 16, 2014 10:31 AM
> To: yak-list@matronics.com
> Subject: Re: Yak-List: JPI Fuel flow gage install
>
> Greg,
> The best place to install the JPI is between the fuel pump and the carbure
tor fuel inlet. I have seen them installed before the fuel pump on the CJ, b
etween the fuel filter and the fuel pump. The reason folks install it there
is because it is easier to install it there than on the output side of the f
uel pump.
>
> There is a way to fit the JPI transducer into the line between the output o
f the fuel pump and the carburetor by fabricating two hose sections. You ca
n make up the hoses using the appropriate size Aeroquip 303 hose (as close a
s possible to the size of the metric hose) and AN491-x fittings. All availa
ble from Aircraft Spruce. The "x" is the same size as the hose size. For e
xample, if you are using 303-6 hose, then you need an AN491-6 fitting. The B
-nut on the 491-x fitting is loose in the fitting kit. You can discard it a
nd replace it with the metric nut which you must remove from the old hose.
Fabricate the ends that must re-connect to the fuel pump and the carburetor i
nlet on each hose section. Remember, you are going to connect the fuel tran
sducer in between the two hose sections you are fabricating.
>
> Next, using standard AN491-x fittings on the ends of the hose that must co
nnect to the JPI, fit the two standard AN491-x fittings (you're going to use
the AN B-nuts) to the two sections of hoses which have the metric B-nuts on
the other ends. On the JPI transducer, which I believe requires 1/4" NPT m
ale fittings, find the appropriate size AN flare (match the flare size to th
e standard AN491-x fitting on the hose ) to 1/4" NPT fitting.
>
> I believe the installation instructions for the transducer says it should b
e installed as close to horizontal (parallel to the ground) as possible. S
o build the hoses to accommodate the installation requirement which means th
e two sections of hose that you will fabricate will be much longer than the o
ne piece hose you remove from the fuel pump to the carburetor.
>
> Hope this helps.
> Dennis
>
>
>
> A. Dennis Savarese
> 334-285-6263
> 334-546-8182 (mobile)
> www.yak-52.com
> Skype - Yakguy1
> On 5/15/2014 8:29 PM, Greg Wrobel wrote:
> Has anyone installed the JPI Fuel Flow Gage on a CJ6? I would think it wou
ld go between the fuel pump and carburetor but that gets a littler crazy try
ing to go from the CJ fittings to the standard pipe thread on the JPI. Anoth
er thought is to come from the fuel filter as I was told that unit uses the
pipe thread. Any thoughts, pictures, parts lists or someone who has install
ed this system that could provide some insight. Thanks
>
>
>
>
>
> http://www.matronics================
> http://forums.matronics.com - List Contribution Web generous nbsp;
--> http://www.matronics.com/c
>
>
>
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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
Message 4
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| Subject: | Re: Low fuel lights on CJ6 |
Greg;
No, that would prevent operation of the lamp from the low level switch
since the path to ground would be open at the PTT switch.
Walt
From: Greg Wrobel
Sent: Thursday, May 15, 2014 8:29 PM
Subject: Re: Yak-List: Low fuel lights on CJ6
Walt, thanks for the info. When installing the DPDT momentary switch, I
assume you spiced into the ground circuit coming from the tank at each
set of lights?
On May 15, 2014 9:41 PM, "Walter Lannon" <wlannon@shaw.ca> wrote:
There is no provision in the stock CJ indicator lamps for a PTT
circuit. I have replaced all of these lamps (with two exceptions) with
standard MS PTT indicator lamps.
The exceptions are:
1. Landing gear position indicators. These are not individual lamps
and a PTT circuit and button has been incorporated to test all 6 lamps
in each box.
2. Low fuel indicators. The circuit design is not conducive to
replacement with the MS PTT lamp. The lamps are energized by a switch
in each fuel tank unit that connects the circuit to ground.
I simply added an additional ground circuit through a DPDT,
momentary contact switch which allows testing of front and rear, left or
right.
Walt
F rom: Greg Wrobel
Sent: Thursday, May 15, 2014 6:21 PM
To: yak-list@matronics.com
Subject: Yak-List: Low fuel lights on CJ6
Has anyone replaced the CJ stock low level fuel lights with USA style
push to test lights. Looking at the back of the CJ PTT Lights is an
enclosed module. Looks like a bit more complicated than re-hooking up a
few wires and adding a power wire.
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics
.com/Navigator?Yak-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
et="_blank">http://www.matronics.com/Navigator?Yak-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
Message 5
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| Subject: | Low fuel lights on CJ6 |
You're gonna need a diode. :-)
From: wlannon@shaw.ca
Subject: Re: Yak-List: Low fuel lights on CJ6
=0A
=0A
=0A
=0A
Greg=3B=0A
=0A
No=2C that would prevent operation of the lamp from the low level switch
=0A
since the path to ground would be open at the PTT switch. =0A
=0A
Walt=0A
=0A
=0A
=0A
=0A
From: Greg Wrobel =0A
Sent: Thursday=2C May 15=2C 2014 8:29 PM=0A
Subject: Re: Yak-List: Low fuel lights on CJ6=0A
=0A
=0A
Walt=2C thanks for the info. When installing the DPDT momentary switch=2C
=0A
I assume you spiced into the ground circuit coming from the tank at each se
t of =0A
lights?=0A
On May 15=2C 2014 9:41 PM=2C "Walter Lannon" <wlannon@shaw.ca> wrote:
=0A
=0A
=0A
=0A
=0A
There is no provision in the stock CJ indicator lamps for a PTT =0A
circuit. I have replaced all of these lamps (with two exceptions) =0A
with standard MS PTT indicator lamps.=0A
The exceptions are:=0A
1. Landing gear position indicators. These are not individual =0A
lamps and a PTT circuit and button has been incorporated to test all 6 la
mps =0A
in each box.=0A
2. Low fuel indicators. The circuit design is not conducive =0A
to replacement with the MS PTT lamp. The lamps are energized by a switch
=0A
in each fuel tank unit that connects the circuit to ground. =0A
I simply added an additional ground circuit =0A
through a DPDT=2C momentary contact switch which allows testing of front
and =0A
rear=2C left or right.=0A
=0A
Walt=0A
=0A
=0A
F =0A
rom: =0A
Greg Wrobel =0A
=0A
=0A
Sent: Thursday=2C May 15=2C 2014 6:21 PM=0A
To: yak-list@matronics.com =0A
=0A
Subject: Yak-List: Low fuel lights on CJ6=0A
=0A
=0A
Has anyone replaced the CJ stock low level fuel lights with USA =0A
style push to test lights. Looking at the back of the CJ PTT Lights is an
=0A
enclosed module. Looks like a bit more complicated than re-hooking up a f
ew =0A
wires and adding a power wire.=0A
=0A
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.c
om/Navigator?Yak-List=0A
href="http://forums.matronics.com">http://forums.matronics.com=0A
href="http://www.matronics.com/contribution">http://www.matronics.com/c
=0A
=0A
=0A
et="_blank">http://www.matronics.com/Navigator?Yak-List=0A
tp://forums.matronics.com=0A
_blank">http://www.matronics.com/contribution=0A
=0A
=0A
=0A
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.c
om/Navigator?Yak-List=0A
href="http://forums.matronics.com">http://forums.matronics.com=0A
href="http://www.matronics.com/contribution">http://www.matronics.com/c
=0A
=0A
=0A
=0A
=0A
=0A
============0A
============0A
============0A
============0A
=0A
Message 6
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| Subject: | Re: Low fuel lights on CJ6 |
Hi Jon;
No diode required for the circuit I have installed. Works just fine. No
effect whatsoever on normal operation.
Walt
From: Jon Boede
Sent: Friday, May 16, 2014 1:29 PM
Subject: RE: Yak-List: Low fuel lights on CJ6
You're gonna need a diode. :-)
-------------------------------------------------------------------------
-------
From: wlannon@shaw.ca
Subject: Re: Yak-List: Low fuel lights on CJ6
Greg;
No, that would prevent operation of the lamp from the low level switch
since the path to ground would be open at the PTT switch.
Walt
From: Greg Wrobel
Sent: Thursday, May 15, 2014 8:29 PM
Subject: Re: Yak-List: Low fuel lights on CJ6
Walt, thanks for the info. When installing the DPDT momentary switch, I
assume you spiced into the ground circuit coming from the tank at each
set of lights?
On May 15, 2014 9:41 PM, "Walter Lannon" <wlannon@shaw.ca> wrote:
There is no provision in the stock CJ indicator lamps for a PTT
circuit. I have replaced all of these lamps (with two exceptions) with
standard MS PTT indicator lamps.
The exceptions are:
1. Landing gear position indicators. These are not individual lamps
and a PTT circuit and button has been incorporated to test all 6 lamps
in each box.
2. Low fuel indicators. The circuit design is not conducive to
replacement with the MS PTT lamp. The lamps are energized by a switch
in each fuel tank unit that connects the circuit to ground.
I simply added an additional ground circuit through a DPDT,
momentary contact switch which allows testing of front and rear, left or
right.
Walt
F rom: Greg Wrobel
Sent: Thursday, May 15, 2014 6:21 PM
To: yak-list@matronics.com
Subject: Yak-List: Low fuel lights on CJ6
Has anyone replaced the CJ stock low level fuel lights with USA style
push to test lights. Looking at the back of the CJ PTT Lights is an
enclosed module. Looks like a bit more complicated than re-hooking up a
few wires and adding a power wire.
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics
.com/Navigator?Yak-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
et="_blank">http://www.matronics.com/Navigator?Yak-List
tp://forums.matronics.com
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