Today's Message Index:
----------------------
1. 01:51 AM - Re: Thermocouple Wire Connections (Werner Schneider)
2. 02:40 AM - IVO current limiter project (Todd Bartrim)
3. 05:33 AM - Re: Thermocouple Wire Connections (FLYaDIVE)
4. 06:06 AM - Re: Thermocouple Wire Connections (Robert Borger)
5. 07:45 AM - Re: IVO current limiter project (user9253)
6. 08:16 AM - Re: Thermocouple Wire Connections (Hamish Mead)
7. 08:42 AM - Re: Re: 240 VAC Motor Question ()
8. 08:43 AM - Re: Re: 240 VAC Motor Question ()
9. 08:45 AM - Re: Thermocouple Wire Connections (Sebastien)
10. 08:45 AM - Re: Re: 240 VAC Motor Question ()
11. 08:48 AM - Re: Re: 240 VAC Motor Question (Harley Dixon)
12. 09:01 AM - Re: Thermocouple Wire Connections (Robert Borger)
13. 09:08 AM - Re: Re: 240 VAC Motor Question (Robert McCallum)
14. 10:18 AM - Re: Re: 240 VAC Motor Question (Charlie England)
15. 08:21 PM - Re: Thermocouple Wire Connections (A R Goldman)
Message 1
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| Subject: | Re: Thermocouple Wire Connections |
Thanks Bob for setting it right it's a while since I've worked on a
Rotax :) Do you know if the 912 has that as well meanwhile?
Cheers Werner
On 14.09.2018 02:37, Robert Borger wrote:
> Werner,
>
> My Rotax 914 has Rotax provided boss mounted thermal sensors on
> cylinders 1 and 4. My GRT EIS 4000 can read their input quite well.
> I put small ring thermal sensors provided by GRT onto the cylinder
> head of cylinders 2 and 3 by screwing them onto bosses provided. They
> seem to read well enough as all 4 are very close in temperature readout.
>
> Blue skies & tailwinds,
> Bob Borger
Message 2
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| Subject: | IVO current limiter project |
What was the final status of this current limiter project?
I've downloaded all the info from the Aeroelectric site but it is still
labeled as under development.
I'd like to build one, but before I order a few boards from pcbExpress, I
just wanted to know if the project is completed as it stands now?
The components are cheap but the board is expensive and I'll end up with
3 of them, so is there anyone else who would like a board?
It looks like I'll also have to invest in a PICkit 1 flash starter kit.
These are no longer made as they are now up to version 3, but they can
still be bought on eBay. Or is there anyone who was previously involved in
this project that can program a chip for me?
Thanks
Todd Bartrim
C-FSTB
RV9
Message 3
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| Subject: | Re: Thermocouple Wire Connections |
Bob Borger & Werner,
I=99m theorizing once again. Since ROTAX has only two bosses for CHT
sensors
and they are diagonally opposit each other and the engine is water cooled
the sensors must be averaging or at least =98mellowing=99 the r
eadings. It is
more like a car which has only one temperature gauge.
Question: Has anyone used a CHT reading to diagnose and pin point a
particular cylinder problem? Of course since there are only two cylinders
with probes the problem would have to be on those cylinders. Unless...
There is such an increase in temperature that, it defines a problem.
Barry
======
On Friday, September 14, 2018, Werner Schneider <glastar@gmx.net> wrote:
t
> >
>
> Thanks Bob for setting it right it's a while since I've worked on a Rotax
> :) Do you know if the 912 has that as well meanwhile?
>
> Cheers Werner
>
> On 14.09.2018 02:37, Robert Borger wrote:
>
>> Werner,
>>
>> My Rotax 914 has Rotax provided boss mounted thermal sensors on cylinder
s
>> 1 and 4. My GRT EIS 4000 can read their input quite well. I put small
>> ring thermal sensors provided by GRT onto the cylinder head of cylinders
2
>> and 3 by screwing them onto bosses provided. They seem to read well eno
ugh
>> as all 4 are very close in temperature readout.
>>
>> Blue skies & tailwinds,
>> Bob Borger
>>
>
===========
===========
===========
===========
===========
>
>
--
Barry
"Chop'd Liver"
If you wash your hands before you go to the bathroom you may have the
makings of a Crew Chief.
Message 4
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| Subject: | Re: Thermocouple Wire Connections |
Barry,
The Rotax 9xx series of engines have liquid cooled heads and air cooled cylinders.
The CHT sensors are placed on what should be the extremes of CHT. #1 should
be the coolest CHT and #4 should be the warmest CHT. #2 & #3 should be somewhere
in between. Rotax also has a separate coolant temperature sensor on the
output of the manifold where the 4 returns from the cylinder head combine.
I dont think that CHT is used as a diagnostic in trouble shooting. It is a warning
of serious problems in the cylinder like detonation or preignition. If one
sees a rapidly increasing, out of limit, CHT, its time to reduce the throttle
and find a place to land.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop (130 hrs).
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP, Hercules Prop.
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Sep 14, 2018, at 7:32 AM, FLYaDIVE <flyadive@gmail.com> wrote:
Bob Borger & Werner,
Im theorizing once again. Since ROTAX has only two bosses for CHT sensors and
they are diagonally opposit each other and the engine is water cooled the sensors
must be averaging or at least mellowing the readings. It is more like a car
which has only one temperature gauge.
Question: Has anyone used a CHT reading to diagnose and pin point a particular
cylinder problem? Of course since there are only two cylinders with probes the
problem would have to be on those cylinders. Unless... There is such an increase
in temperature that, it defines a problem.
Barry
Message 5
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| Subject: | Re: IVO current limiter project |
The builder who used this project on his plane posted that it worked very well.
Read Dennis' post near the bottom of this thread:
http://www.matronics.com/forums/viewtopic.php?p=470854&sid=213ec347d8eaec8f1c56ef0d4cf417c8
I have purchased PCB boards from elecrow.com at low prices compared to local PCB
houses. The disadvantage is that it takes up a month to get the boards.
A low cost option is to use a magnetic reed switch instead of the circuit board.
Wrap a reed switch with several turns of wire. Put that wire in series with
the motor. When the motor current is high, the reed switch will close and turn
on an indicator light.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483180#483180
Message 6
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| Subject: | Re: Thermocouple Wire Connections |
Hi group,
My first post here after lurking for sometime, thank you :)
Sebastien - perfect timing on this topic as I need to make up some new CHT
probes to fit a Jabiru 2200 engine. You said:
> I am wiring some of these CHT probes to a Dynon Skyview
Could you post a product link to the CHT probes/terminals please? (I only
get the list daily digest and guess you posted an image - I'll change my
subscription type in a moment).
Also; I read Bob's article on DIY CHT probes, but still have a few
questions - hope the group don't mind overloading a thread:
So far I ordered some AMP / TE 328975 12 mm ring terminals PIDG R 22-16COMM
22-18MIL 1/2 (http://www.te.com/usa-en/product-328975.html) for the job -
with a view to removing the Plastic Insulation prior to installing - but:
- wonder if the above terminals may be too thin compared to the following
thicker, plain-copper ring terminals: (
https://www.parts4aircraft.com/cht-probes-ring-type-c2x9382903) - leading
to premature failure or exhaust gas blow-by?
- wonder if the tin plate on PIDG terminals is not ideal, due to max
working temp of tinplate being 150=C2=BAC typically. Will it burn/evaporate
off
and all be ok, or should I anneal the terminals to cherry red prior
fitting, much as a spark plug copper gasket would be?
Regarding CHT lead insulation: I initially bought Type K glassfibre
insulated extension cable with stainless steel over-braiding (
https://uk.rs-online.com/web/p/thermocouple-extension-wire/2194595/) as it
was cheaper than the PTFE or PFA insulated variety, but found the glass
fibres to be strongly bonded to one another and therefore very fiddly to
strip.
- As such, any recommendations for/against using PTFE or PFA insulation
types for making CHT probes in future would be appreciated, e.g. perhaps: (
https://uk.rs-online.com/web/p/thermocouple-extension-wire/6118012/).
Many thanks,
Hamish
Ledbury, UK
Message 7
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| Subject: | Re: 240 VAC Motor Question |
> There are no pictures attached to your post.
Hmmm...perhaps due to file size I should send them one at a time (sorry for
the spam)>
.
Thanks,
Bill Hunter
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of user9253
Sent: Thursday, September 13, 2018 7:35 PM
Subject: AeroElectric-List: Re: 240 VAC Motor Question
Bill,
There are no pictures attached to your post.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483169#483169
Message 8
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| Subject: | Re: 240 VAC Motor Question |
Here is the inside of the box
.
Thanks,
Bill Hunter
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of user9253
Sent: Thursday, September 13, 2018 7:35 PM
Subject: AeroElectric-List: Re: 240 VAC Motor Question
Bill,
There are no pictures attached to your post.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483169#483169
Message 9
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| Subject: | Re: Thermocouple Wire Connections |
westach.com > products > accessories > under spark plug ring type
thermocouples
Aircraft Spruce carries many Westach products.
On Fri, Sep 14, 2018 at 8:15 AM, Hamish Mead <hamish.mead@gmail.com> wrote:
> Hi group,
>
> My first post here after lurking for sometime, thank you :)
>
> Sebastien - perfect timing on this topic as I need to make up some new CH
T
> probes to fit a Jabiru 2200 engine. You said:
> > I am wiring some of these CHT probes to a Dynon Skyview
> Could you post a product link to the CHT probes/terminals please? (I only
> get the list daily digest and guess you posted an image - I'll change my
> subscription type in a moment).
>
> Also; I read Bob's article on DIY CHT probes, but still have a few
> questions - hope the group don't mind overloading a thread:
>
> So far I ordered some AMP / TE 328975 12 mm ring terminals PIDG R
> 22-16COMM 22-18MIL 1/2 (http://www.te.com/usa-en/product-328975.html) for
> the job - with a view to removing the Plastic Insulation prior to
> installing - but:
> - wonder if the above terminals may be too thin compared to the following
> thicker, plain-copper ring terminals: (https://www.parts4aircraft.
> com/cht-probes-ring-type-c2x9382903) - leading to premature failure or
> exhaust gas blow-by?
> - wonder if the tin plate on PIDG terminals is not ideal, due to max
> working temp of tinplate being 150=C2=BAC typically. Will it burn/evapora
te off
> and all be ok, or should I anneal the terminals to cherry red prior
> fitting, much as a spark plug copper gasket would be?
>
> Regarding CHT lead insulation: I initially bought Type K glassfibre
> insulated extension cable with stainless steel over-braiding (
> https://uk.rs-online.com/web/p/thermocouple-extension-wire/2194595/) as
> it was cheaper than the PTFE or PFA insulated variety, but found the glas
s
> fibres to be strongly bonded to one another and therefore very fiddly to
> strip.
> - As such, any recommendations for/against using PTFE or PFA insulation
> types for making CHT probes in future would be appreciated, e.g. perhaps:
(
> https://uk.rs-online.com/web/p/thermocouple-extension-wire/6118012/).
>
> Many thanks,
> Hamish
> Ledbury, UK
>
>
Message 10
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| Subject: | Re: 240 VAC Motor Question |
Here is a closer view of the relay itself.
Again...THANKS for your help on this (as always)!!!
.
Thanks,
Bill Hunter
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of user9253
Sent: Thursday, September 13, 2018 7:35 PM
Subject: AeroElectric-List: Re: 240 VAC Motor Question
Bill,
There are no pictures attached to your post.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483169#483169
Message 11
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| Subject: | Re: 240 VAC Motor Question |
Just an FYI Bill, I did have the pictures along with your first
message...using Thunderbird if that makes any difference.
Harley
------------------------------------------------------------------------
On 9/14/2018 11:42 AM, billhuntersemail@gmail.com wrote:
> Here is the inside of the box
>
>
> .
> Thanks,
> Bill Hunter
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> <owner-aeroelectric-list-server@matronics.com> On Behalf Of user9253
> Sent: Thursday, September 13, 2018 7:35 PM
> To: aeroelectric-list@matronics.com
> Subject: AeroElectric-List: Re: 240 VAC Motor Question
>
>
> Bill,
> There are no pictures attached to your post.
>
> --------
> Joe Gores
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=483169#483169
>
>
Message 12
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| Subject: | Re: Thermocouple Wire Connections |
Werner,
Yes, the 912 has the same arrangement of CHT sensors.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop (130 hrs).
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP, Hercules Prop.
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Sep 14, 2018, at 3:50 AM, Werner Schneider <glastar@gmx.net> wrote:
Thanks Bob for setting it right it's a while since I've worked on a Rotax :) Do
you know if the 912 has that as well meanwhile?
Cheers Werner
On 14.09.2018 02:37, Robert Borger wrote:
> Werner,
>
> My Rotax 914 has Rotax provided boss mounted thermal sensors on cylinders 1 and
4. My GRT EIS 4000 can read their input quite well. I put small ring thermal
sensors provided by GRT onto the cylinder head of cylinders 2 and 3 by screwing
them onto bosses provided. They seem to read well enough as all 4 are very
close in temperature readout.
>
> Blue skies & tailwinds,
> Bob Borger
Message 13
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| Subject: | Re: 240 VAC Motor Question |
Both pictures were attached to the original post that I received.
Bob McC
>
> ---------- Original Message ----------
> From: billhuntersemail@gmail.com
> Date: September 14, 2018 at 11:42 AM
>
>
> > There are no pictures attached to your post.
>
> Hmmm...perhaps due to file size I should send them one at a time (sorry
> for
> the spam)>
> .
> Thanks,
> Bill Hunter
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> <owner-aeroelectric-list-server@matronics.com> On Behalf Of user9253
> Sent: Thursday, September 13, 2018 7:35 PM
> To: aeroelectric-list@matronics.com
> Subject: AeroElectric-List: Re: 240 VAC Motor Question
>
>
> Bill,
> There are no pictures attached to your post.
>
> --------
> Joe Gores
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=483169#483169
>
>
>
>
>
>
>
>
>
>
Message 14
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| Subject: | Re: 240 VAC Motor Question |
On 9/14/2018 10:48 AM, Harley Dixon wrote:
> Just an FYI Bill, I did have the pictures along with your first
> message...using Thunderbird if that makes any difference.
>
> Harley
> ------------------------------------------------------------------------
>
Same here, on both counts.
---
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Message 15
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| Subject: | Re: Thermocouple Wire Connections |
Speaking of thermocouples=94-
Can one thermocouple be connected to two readout devices???
Thanks
Rich
Sent from my iPhone
> On Sep 13, 2018, at 9:59 AM, FLYaDIVE <flyadive@gmail.com> wrote:
>
> Sebastien:
>
> Not at all! You just have to figure out the polarity. Voltage output sho
uld be something like 23 microvolts per Deg F.
> BUT! Why do you want to use an Under The Spark Plug sensor? In general:
> 1 - They read High.
> 2 - They are very slow in reacting.
> 3 - They break easy.
>
> Your choice of wire connector is a good one. I have done dozens & dozens o
f connections using that connector. WAY easier to use them than the nut & b
olt system from JPI.
>
> Barry
>
>> On Thu, Sep 13, 2018 at 10:54 AM Sebastien <cluros@gmail.com> wrote:
>> I am wiring some of these CHT probes to a Dynon Skyview
>>
>> <712-5WK.jpg>
>> I'm hoping to connect them with these
>>
>> https://buy-ei.com/portfolio/olc-1/
>>
>> as recommended by Dynon but as you can see the probes come with bullet co
nnectors. I don't have any female connectors for the bullets. Will it mess u
p the readings to cut the bullet connectors off, strip the wire, and connect
them to the Dynon harness using the OLC-1s?
>>
>> Thank you,
>>
>> Sebastien
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