Matronics Email Lists :: View topic - 912 water temp probe? Is this correct ?

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

912 water temp probe? Is this correct ?

Matronics Email Lists Forum Index -> Zenith-List

View previous topic :: View next topic

Author Message

taffy8706(at)yahoo.com
Guest

Posted: Sat May 06, 2006 1:46 pm Post subject: 912 water temp probe? Is this correct ?

After thinking about this all day and re-reading and re-reading the messages, what threw me off was the CHT reference.  I understand the head ports do not extent into the water jacket.  You use this port to pick up the "WATER TEMP" even though the probe is not touching the water-----even though Thilo referenced these as CHT probes the gauge will be marked, "water temp"-------- is this correct-

  Fritz



Fritz Gurschick <taffy8706(at)yahoo.com> wrote:

  



I think the best thing to do, is ask Thilo exactly what he ment. 

Thilo, your comment below, Are you implying a water temp gauge isn't needed if a CHT gauge is in the aircraft ? 

Fritz



" However, it's not really needed, since the CHT probes are

sufficient.

Best regards



Thilo Kind"



Dave wrote:




I think you misread his response, the water temp gage is needed, however

Rotax uses an installation point on the cylinder head that does not directly

contact the water/coolant but reads the temperature of the water jacket.

Only the cylinder heads are water cooled on a Rotax engine, not the cylinder

sleeves or block. I hope clarification this helps.



Dave 601-HD 912ULS



--

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

thilo.kind(at)gmx.net
Guest

Posted: Sun May 07, 2006 4:05 am Post subject: 912 water temp probe? Is this correct ?

H Fritz et Al,



Guess, I need to clarify: the Roty 912 comes with 2 CHT probes. However,

since the cyclinder heads on the Rotax are jacketed and water cooled, what

the CHT probe really read is the water temperature. For that reason, Rotax

states, that an additional water temeprature probe is not required. The FAA

seems to be fine with this logic as well - at least I'm not aware of a case,

where the FAA requested a separate water temperature probe.



If I remember correctly, the water rad provided by ZAC for mounting under

the belly has a port for a water temperature probe. The original Rotax water

rad comes without this feature.



Having said all this, I believe, a separate water temp probe is not

required - the CHT probes are sufficient.  On the other hand, it would not

hurt to have a separate probe, if in can be installed in a way without

adding risk for the coolant system (i.e chance of leaks, etc.).



Thilo Kind

---

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Zenith-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum