Today's Message Index:
----------------------
1. 02:42 AM - Re: Re: Rotax 914 Turbo Warning Lights (Ivor Phillips)
2. 05:33 AM - Re: Re: Rotax 914 Turbo Warning Lights (GTH)
3. 06:59 AM - Re: Re: Rotax 914 Turbo Warning Lights (David Joyce)
4. 12:29 PM - Re: Rotax 914 Turbo Warning Lights (Alan Carter)
5. 06:57 PM - 912 only putting out 12.5 volts (dsingleton)
Message 1
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| Subject: | Re: Rotax 914 Turbo Warning Lights |
I don't quite agree David, if unbeknown to you one of your hoses/ connections developed
a leak when airborne you would be unaware until the level dropped below
the pressure cap bottle,
Once it had done so it would effectively stop circulating through the radiator
and your temperature would start climbing upwards,
The sensor is a couple of grams at most and IMO would give me a heads up long before
it got critical,
My expansion bottle is centre of the firewall as high as possible so cannot be
seen without removing the top cowl, I of course visually check it but on a long
flight it nice to know that nothing untoward is happening,
For people interested in the sensor I used its a DE4 PPS 10 A01. Website
http://www.deeter.co.uk/products/float-switch-liquid-level-sensors-overview/40-series-horizontal-liquid-level-sensor-float-switch
Regards
Ivor
Sent from my iPad
> On 26 May 2014, at 11:19, "David Joyce" <davidjoyce@doctors.org.uk> wrote:
>
>
> Alan, For my money it doesn't really matter what level the fluid is in the bottle
as long as the level in the header tank is OK, and I assume you check that
frequently as part of your preparation for flight. The bottle is just there
to make any fluid pushed out by thermal expansion recoverable as I see it. Why
add weight and complication? regards, David Joyce, G-XSDJ
>
>
> On Mon, 26 May 2014 09:35:12 +0100
> Ivor Phillips <ivor.phillips@ntlworld.com> wrote:
>> Hi alan
>> I drilled into the side of the plastic expansion bottle that Rotax supplied,
I put her midway so the level would need to drop to minimum before the sensor
triggered,
>> I will try and turn up the type of float sensor I used from my records and let
you no,
>> It's a simple wiring job once you are through the firewall,
>> Regards
>> Ivor
>> Sent from my iPad
>>> On 26 May 2014, at 08:51, "Alan Carter" <alancarteresq@onetel.net> wrote:
>>> Hello Ivor.
>>> Looks like Lydd is going to become more active know Manston is closed.
>>> I would like to fit an indicator the same as you have done, sounds a good idea,
is there something you can drill and attach to the filler cap.
>>> Can you give some info on this.
>>> Regards.
>>> Alan
>>> Read this topic online here:
>>> http://forums.matronics.com/viewtopic.php?p=423797#423797
>> Un/Subscription,
>> http://www.matronics.com/Navigator?RotaxEngines-List
>> Forums!
>> Admin.
>
>
>
>
Message 2
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| Subject: | Re: Rotax 914 Turbo Warning Lights |
Ivor Phillips a crit :
>
> I don't quite agree David, if unbeknown to you one of your hoses/ connections
developed a leak when airborne you would be unaware until the level dropped below
the pressure cap bottle,
Ivor and all,
In my opinion, monitoring the coolant *pressure* would be preferable,
since pressure would be more closely related to the primary cause -leak
in the circuit - than the consequence - low coolant level.
Be prepared for some additional head-scratching, like is always the case
when you monitor a new parameter.
One word of caution : anytime one opens the pressure cap of the
expansion tank, one breaks the syphon, so it's not the best way to check
the coolant level. Better monitor the level in the translucent overflow
bottle, without disturbing the coolant circuit.
Best regards,
--
Gilles
http://contrails.free.fr
Message 3
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| Subject: | Re: Rotax 914 Turbo Warning Lights |
Ivor, It is not often I disagree with you, but I would
guess that a leaking or burst hose will let fluid out and
air out of/in to the radiator system without producing
sufficient suction to empty out the overflow bottle, so
that you could boil without your level sensor saying
anything. On the other hand boiling the coolant is
something that is very noticeable in air - you get blue
fluid all over the screen - experienced when I was trying
to do a 5 min full power climb to satisfy the LAA with one
of my early model props.!
Regards, David
On Tue, 27 May 2014 10:41:43 +0100
Ivor Phillips <ivor.phillips@ntlworld.com> wrote:
><ivor.phillips@ntlworld.com>
>
> I don't quite agree David, if unbeknown to you one of
>your hoses/ connections developed a leak when airborne
>you would be unaware until the level dropped below the
>pressure cap bottle,
> Once it had done so it would effectively stop
>circulating through the radiator and your temperature
>would start climbing upwards,
> The sensor is a couple of grams at most and IMO would
>give me a heads up long before it got critical,
> My expansion bottle is centre of the firewall as high as
>possible so cannot be seen without removing the top cowl,
>I of course visually check it but on a long flight it
>nice to know that nothing untoward is happening,
>For people interested in the sensor I used its a DE4 PPS
>10 A01. Website
>
> http://www.deeter.co.uk/products/float-switch-liquid-level-sensors-overview/40-series-horizontal-liquid-level-sensor-float-switch
>
> Regards
> Ivor
> Sent from my iPad
>
>> On 26 May 2014, at 11:19, "David Joyce"
>><davidjoyce@doctors.org.uk> wrote:
>>
>><davidjoyce@doctors.org.uk>
>>
>> Alan, For my money it doesn't really matter what level
>>the fluid is in the bottle as long as the level in the
>>header tank is OK, and I assume you check that frequently
>>as part of your preparation for flight. The bottle is
>>just there to make any fluid pushed out by thermal
>>expansion recoverable as I see it. Why add weight and
>>complication? regards, David Joyce, G-XSDJ
>>
>>
>> On Mon, 26 May 2014 09:35:12 +0100
>> Ivor Phillips <ivor.phillips@ntlworld.com> wrote:
>>><ivor.phillips@ntlworld.com>
>>> Hi alan
>>> I drilled into the side of the plastic expansion bottle
>>>that Rotax supplied, I put her midway so the level would
>>>need to drop to minimum before the sensor triggered,
>>> I will try and turn up the type of float sensor I used
>>>from my records and let you no,
>>> It's a simple wiring job once you are through the
>>>firewall,
>>> Regards
>>> Ivor
>>> Sent from my iPad
>>>> On 26 May 2014, at 08:51, "Alan Carter"
>>>><alancarteresq@onetel.net> wrote:
>>>><alancarteresq@onetel.net>
>>>> Hello Ivor.
>>>> Looks like Lydd is going to become more active know
>>>>Manston is closed.
>>>> I would like to fit an indicator the same as you have
>>>>done, sounds a good idea, is there something you can
>>>>drill and attach to the filler cap.
>>>> Can you give some info on this.
>>>> Regards.
>>>> Alan
>>>> Read this topic online here:
>>>> http://forums.matronics.com/viewtopic.php?p=423797#423797
>>> Un/Subscription,
>>> http://www.matronics.com/Navigator?RotaxEngines-List
>>> Forums!
>>> Admin.
>>
>>
>>
>>
>
>
>Un/Subscription,
>http://www.matronics.com/Navigator?RotaxEngines-List
>Forums!
>Admin.
>
>
>
Message 4
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| Subject: | Re: Rotax 914 Turbo Warning Lights |
Many Thanks All.
Ivan thanks for your link.
I would think with a small leak which could occur in flight or a leak the occurs
when warming up and stops when the engine is hot would take coolant from the
reservoir, as you can not see the reservoir with the cowlings on I think it is
a nice idea to have a warning light as its so simple to install. Myself I would
like to find a Small sensor probe that I could drill a hole in the reservoir
filler cap and fix this sensor probe. Anybody know of such a think,? Can always
find a new cap.
Regards.
Alan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=423875#423875
Message 5
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| Subject: | 912 only putting out 12.5 volts |
My grand Rapids unit shows 12.5 volts. Goes down to 12.3 with radio and transponder
on. landing light or strobes take it below 12.0. Installed new regulator(
Kawasaki) and new battery. Still persist. Any Ideas ??
--------
Dennis Singleton
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=423891#423891
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