REFLECTOR: Dynon -Oil Temp Sensor

[Scott Derrick]

Ruben,

Many thanks!!  I've been battling this since I installed the Dynon!

I will order the sensor today, $19 is very reasonable.

Scott

-------- Original Message --------
Subject: Re: REFLECTOR: Dynon -Oil Temp Sensor
From: Ruben Creus <ruben at vainneg.com>
To: 'Velocity Aircraft Owners and Builders list' <reflector at tvbf.org>, 
'Scott Derrick' <scott at tnstaafl.net>
Date: 09/22/2011 11:20 AM

> Scott,
>
> Well, the sensor is made by Grand Rapids, which is a direct competitor of
> Dynon, so maybe they do not want to make so public to avoid admitting that a
> competitor had a better solution for an oil temp device. Anyhow, they
> finally told me that this should work. I tried it and since is just going
> perfect!
>
> NOTE: Remember that if you use this sensor you need to change the oil temp
> sensor type in your Dynon configuration to TYPE 3
>
>
> Here is the info of the sensor
>
> Part Number: GRT FT-LC-01
>
> I bought it from Chief. Here is the link.
>
> http://www.chiefaircraft.com/avionics/grand-rapids/optional-replacement-part
> s/grt-ft-lc-01.html\
>
> Price $19
>
> Hope that helps.
>
>
> Ruben Creus
> 571-215-0025
> ruben at vainneg.com
>
>
>
> -----Original Message-----
> From: Scott Derrick [mailto:scott at tnstaafl.net]
> Sent: Wednesday, September 21, 2011 8:24 PM
> To: Velocity Aircraft Owners and Builders list
> Subject: Re: REFLECTOR: Dynon -Oil Temp Sensor
>
> Rueben,
>
> I've been dealing with the exact same problem!  I wonder why they didn't
> mention a two wire sensor to me?
>
> Do you have the part number?
>
> Thanks
>
> Scott
>
> Ruben Creus<ruben at vainneg.com>  wrote:
>
>> Hi all,
>>
>> I have been dealing with a problem for a long time with the reading of my
>> oil temp in my Dynon, and finally found a solution. So, I thought to share
>> it around in case anyone else has the same issue with a Dynon unit.
>>
>> I have a Dynon flightDeck-180, and always had the issue of seeing my oil
>> temp fluctuating based on the current of the alternator. I originally had a
>> 1-wire oil sensor, the sensor was grounded on the engine block. That
> created
>> small a ground differential between the back and the nose of the plane
>> translating on a variation of the displayed temperature of approximately
> +10
>> degrees, the Dynon was grounded in the nose and the sensor in the engine
>> block.
>>
>> Talking with Dynon, about it they told me to change the oil temp sensor to
> a
>> 2-wire sensor. First, the resolution of the sensor is ten times greater, so
>> it is more accurate, and second, the second wire can connect directly to
> the
>> ground of the harness, virtually bringing the ground to the sensor to the
>> ground of the Dynon.
>>
>> Previously I had jumps of 10 degrees when I pushed my PTT, or turn on
>> landing light, or when the alternator was giving more current for any
>> reason.
>>
>> Now the result is that variations have disappeared. Now the oil temp does
>> not suddenly fluctuate anymore!!
>>
>> Ruben Creus
>> 571-215-0025
>> ruben at vainneg.com
>>
>>
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