Today's Message Index:
----------------------
1. 03:38 AM - engine monitor system (Chad Miller)
2. 06:01 AM - Re: engine monitor system (HalB)
3. 06:46 AM - Re: engine monitor system (flyv35b)
4. 09:31 AM - Re: engine monitor system (Chad Miller)
5. 09:31 AM - Re: engine monitor system (Chad Miller)
6. 10:11 AM - Re: engine monitor system (TeamGrumman@AOL.COM)
7. 10:34 AM - Re: engine monitor system (923te)
8. 01:44 PM - Re: engine monitor system (FLYaDIVE@AOL.COM)
9. 10:01 PM - Re: engine monitor system (TeamGrumman@aol.com)
10. 10:05 PM - Re: engine monitor system (TeamGrumman@AOL.COM)
Message 1
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| Subject: | engine monitor system |
I am wanting to have an engine CHT and EGT monitor system installed in
my Tiger, and was wondering which one was the best EI or JPI? Does
anyone have any opinions.
Thanks Chad
Message 2
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| Subject: | Re: engine monitor system |
I have used both companys products and find both very good however I
prefer the JPI do to its faster responce time.
----- Original Message -----
From: Chad Miller
To: teamgrumman-list@matronics.com
Sent: Wednesday, August 30, 2006 5:37 AM
Subject: TeamGrumman-List: engine monitor system
I am wanting to have an engine CHT and EGT monitor system installed in
my Tiger, and was wondering which one was the best EI or JPI? Does
anyone have any opinions.
Thanks Chad
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-----
8/28/2006
Message 3
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| Subject: | Re: engine monitor system |
If you get the UBG-16 with the fast response probes I doubt if there is
any difference at all. Aftermarket service from EI is excellent. I
don't think you can claim that with JPI.
I sell both JPI and EI instruments.
Cliff A&P/IA
----- Original Message -----
From: HalB
To: teamgrumman-list@matronics.com
Sent: Wednesday, August 30, 2006 6:01 AM
Subject: Re: TeamGrumman-List: engine monitor system
I have used both companys products and find both very good however I
prefer the JPI do to its faster responce time.
----- Original Message -----
From: Chad Miller
To: teamgrumman-list@matronics.com
Sent: Wednesday, August 30, 2006 5:37 AM
Subject: TeamGrumman-List: engine monitor system
I am wanting to have an engine CHT and EGT monitor system installed
in my Tiger, and was wondering which one was the best EI or JPI? Does
anyone have any opinions.
Thanks Chad
atronics.com/Navigator?TeamGrumman-List
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---
Date: 8/28/2006
Message 4
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| Subject: | Re: engine monitor system |
Ok thanks for the info. Chad
----- Original Message -----
From: flyv35b
To: teamgrumman-list@matronics.com
Sent: Wednesday, August 30, 2006 9:46 AM
Subject: Re: TeamGrumman-List: engine monitor system
If you get the UBG-16 with the fast response probes I doubt if there
is any difference at all. Aftermarket service from EI is excellent. I
don't think you can claim that with JPI.
I sell both JPI and EI instruments.
Cliff A&P/IA
----- Original Message -----
From: HalB
To: teamgrumman-list@matronics.com
Sent: Wednesday, August 30, 2006 6:01 AM
Subject: Re: TeamGrumman-List: engine monitor system
I have used both companys products and find both very good however I
prefer the JPI do to its faster responce time.
----- Original Message -----
From: Chad Miller
To: teamgrumman-list@matronics.com
Sent: Wednesday, August 30, 2006 5:37 AM
Subject: TeamGrumman-List: engine monitor system
I am wanting to have an engine CHT and EGT monitor system
installed in my Tiger, and was wondering which one was the best EI or
JPI? Does anyone have any opinions.
Thanks Chad
atronics.com/Navigator?TeamGrumman-List
-------------------------------------------------------------------------
-
Date: 8/28/2006
atronics.com/Navigator?TeamGrumman-List
Message 5
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| Subject: | Re: engine monitor system |
Ok thanks for the info. Chad
----- Original Message -----
From: HalB
To: teamgrumman-list@matronics.com
Sent: Wednesday, August 30, 2006 9:01 AM
Subject: Re: TeamGrumman-List: engine monitor system
I have used both companys products and find both very good however I
prefer the JPI do to its faster responce time.
----- Original Message -----
From: Chad Miller
To: teamgrumman-list@matronics.com
Sent: Wednesday, August 30, 2006 5:37 AM
Subject: TeamGrumman-List: engine monitor system
I am wanting to have an engine CHT and EGT monitor system installed
in my Tiger, and was wondering which one was the best EI or JPI? Does
anyone have any opinions.
Thanks Chad
atronics.com/Navigator?TeamGrumman-List
-------------------------------------------------------------------------
---
Date: 8/28/2006
Message 6
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| Subject: | Re: engine monitor system |
I've been installing JPIs for 9 years now. I've never had any problems wit
h
their service. I've even returned units for updates and repairs and they'v
e
been turned around very quickly.
I've also used both units. I like the logic and display on the JPI. Over
the years, the EI has come to be more like the JPI. Good reason, imitation
is the sincerest form of flattery. You'll never hear of the JPI becoming m
ore
like the EI.
The EI, with the P-100 probes, will measure CHTs as much as 70 degrees coole
r
than the JPI. Now, if watching lower temps is somehow less stressful, then
go with the EI. As for the P-101 probe, I haven't had one to test so I can
't
say.
My biggest gripe with the EI is the metal sheathed wires to the probes.
Wires that can't be cut to length. The EI installation ends up having a bi
g wad
of wires left over, usually under the panel. I can install ALL of the wire
s
to a JPI, including fuel flow, a tach sensor, carb heat and oil temp through
a 1/2 inch diameter hole in the firewall. When wrapped with spiral wrap or
expando sleeve, it makes for a very neat installation. I don't know if you
've
ever seen the installation on my Tiger, but, there are no visable wires.
By the time you add up all the costs, prices are comparable too. The faste
r
response EGT probes are $104 more EACH. Quote from EI, "Our new EGT prob
e
is one-half the size (measured by area) of our standard probe. It=99s
also now
the same size as JPI=99s probe except for their tapered tip, which EI
will not
manufacture because of reliability and durability issues."
- - - - I've never seen any durability problems with the JPI.
On the EI web site, they compare the features of a UBG-16 to a JPI. A lot
of it is total bunk based on my experience with the JPI. On the first line
,
Price, they compare a UBG-16 to a JPI 700. The JPI retails for $2195, no T
IT.
Note, the 700 comes with the faster response probes and complete data
recording and analysis and trend finding software. (a $395 option on an EI
)
On the second line, Price, they compare prices for the UBG-16 and a JPI 800
(retails for $3990 wo TIT) HOWEVER, the 800, in addition to all of the 700
features, includes fuel flow, digital tach, Manifold Absolute Pressure, OAT,
and
displays percent power. The TIT option is $165.
Third line: Case size, Yes, the JPI is a bit long. But, I've only had on
e
installation where depth was a issue.
Fourth line: Resolution. The JPI reads 1 degree resolution. I've never
seen any jumpy readings. But, isn't it nice to know you have the option to
change the resolution?
Fifth line: and your point is???
sixth line: Normalize mode: EI claims that once you leave Normalize, the
information is lost. You still have all the data recorded. Down load it
after a flight.
Note on downloading: The JPI has an option to plug a USB memory stick into
and then you can take the stick home an put it in your computer. No need t
o
take a laptop to the airport.
7th line, True peak, I have seen the leanest cylinder change from cylinder t
o
cylinder until it finds the true leanest. For-what-it's-worth, I rarely
rely on the lean find for anything other than curiosity. Finding the leane
st
cylinder by watching which Normailized mode is more fun for me.
8th line: Independent Resolution: Really, who give a shit what the
segments read, that's why we all want a digital readout in the first place.
9th line: Number of Pilot Alarms. Just what is an over temp/under temp o
n
an EGT anyway? EGTs are relative and totally dependent on the location of
the probe in the cylinder. The CHT alarms on the JPI go by the order of
importance. Let's say they all go over 450 and the hottest one starts to f
lash at
say 455. If that cylinder cools and another cylinder is hotter, the flashi
ng
column goes to that cylinder. All you care about is the hottest cylinder a
t
that time anyway.
Line 10: See comment on EGTs for line 9.
Line 11: Rich/Lean of Peak. With only a couple of exceptions, ALL engine
s
are leaned rich of peak. I set up my JPI for lean of peak just for grins.
It behaves about the same as for rich of peak.
Line 12: Scan mode: When you turn the JPI on, it goes to scan mode. You ca
n
stop the scan at any time by touching the scan button. You can start it
again by leaving it alone for 2 minutes or by touching the lean find and the
n the
scan button. I don't see the iportance here.
Line 13: Stores last peak reading. The EI page says no, but, funny, each
time I download the data after a flight, damn, there it is....
Line 14: Additional functions: the EI has an alarm for high and low OAT.
Cool. The EI also has an alarm for high and low Carb temp. OK. The EI
has an alarm for high and low fuel flow. Not sure how this is important.
Oil
Pressure/amps/gyro vacuum: this is interesting, I didn't know the UBG-16
displayed oil pressure/amps/gyro vacuum.
So, the EI has ability to display the high an low values for up to 16
functions (32 total). Is that important or just another limit to set and f
orget?
You decide. After using a JPI for the last 7 years, I've never found a
function I wish I had. If I could add/change anything to/on my JPI 800, it
would
be the ability to read % power and RPM at the top of the screen all the time
and skip the RPM scan.
Gary
Message 7
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| Subject: | Re: engine monitor system |
Gary,
I used to think you could not cut the EI wires as well. I learned that
you can and that it is actually in their instructions.
I installed the UBG 16 and cut the wires to fit and it works fine.
I have wanted to ask you about your comparison where you got the 70deg
diference in temp readings. I have been told that if one used a JPI
instrument witn an EI probe you would not have the correct calibration.
When you did your comparison did you have both a JPI probe with a JPI
instrument and an EI probe with a EI instrument simultaneously running?
Thanks,
Ned
My biggest gripe with the EI is the metal sheathed wires to the
probes. Wires that can't be cut to length. The EI installation ends up
having a big wad of wires left over, usually under the panel. I can
install ALL of the wires to a JPI, including fuel flow, a tach sensor,
carb heat and oil temp through a 1/2 inch diameter hole in the firewall.
When wrapped with spiral wrap or expando sleeve, it makes for a very
neat installation. I don't know if you've ever seen the installation on
my Tiger, but, there are no visable wires.
Message 8
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| Subject: | Re: engine monitor system |
--> TeamGrumman-List message posted by: FLYaDIVE@aol.com
Team:
Since engine monitoring equipment is not on the TC can't we install any
monitoring equipment we wish? I know many of the pieces out there have an STC,
but
wouldn't a 337 work as well? I ask this because I was thinking about a Grand
Rapids EIS.
Barry
Message 9
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| Subject: | Re: engine monitor system |
In a message dated 8/30/06 10:36:52 AM, 923te@cox.net writes:
> When you did your comparison did you have both- a JPI probe-with a
> JPI-instrument and an EI probe with a EI instrument simultaneously runni
ng?
>
yes
Message 10
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| Subject: | Re: engine monitor system |
In a message dated 8/30/06 1:46:59 PM, FLYaDIVE@aol.com writes:
> I know many of the pieces out there have an STC, but
> wouldn't a 337 work as well?-
>
All I do is a Form 337
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