Today's Message Index:
----------------------
1. 05:18 AM - Re: Service Bulletin SB-912-043 R2 (Thom Riddle)
2. 06:21 AM - Water temps on Rotax 912 (Thilo Kind)
3. 08:24 AM - Evans Coolant (Ben Burbridge)
4. 08:44 AM - Re: Evans Coolant (David Key)
5. 11:13 AM - Re: Evans Coolant ()
Message 1
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| Subject: | Re: Service Bulletin SB-912-043 R2 |
Wicks Aircraft Supply has a TSO'd 2 1/4" Westach water temperature
gauge and sender complete for $100. A good bit less than the UMA
instruments (non-TSO'd) at Aircraft Spruce.
http://www.wicksaircraft.com/catalog/product_cat.php/subid=2758/
index.html
Thom in Buffalo
Message 2
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| Subject: | Water temps on Rotax 912 |
Hi,
just came back from an hour flight with my Zodiac CH 601 HDS with a Rotax
912 UL. Made in unusual observation: the coolant temperature oscilated
between 120 and 158 F with probably 5 minutes between the lowest and the
highest peak. Given the current OAT the coolant temp would have stayed at
around 125 F.
Coolant is 50 % water and 50 % antifreeze.
Anybody with an idea, what might has caused this?
Thanks
Thilo Kind
Message 3
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In my 912 UL installed in a Kitfox III, after about 60 hours TT, I
switched to straight Evans coolant, doing the system flush as
required- all as advised by ROTAX. I have been running very hot
water temperatures ever since- borderline too hot. Has anybody else
run into this problem? Lockwood tech help asked me why I made the
switch, saying they don't do it themselves. Thanks
Ben
Message 4
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I use the Evans in my 912, works great for me. I have to shield off some of
my oil cooler in the winter months because my coolant temps were at 170 now
they are back to 190.
>From: Ben Burbridge <benburb@comcast.net>
>To: rotaxengines-list@matronics.com
>Subject: RotaxEngines-List: Evans Coolant
>Date: Sun, 26 Nov 2006 11:23:37 -0500
>
><benburb@comcast.net>
>
>In my 912 UL installed in a Kitfox III, after about 60 hours TT, I switched
>to straight Evans coolant, doing the system flush as required- all as
>advised by ROTAX. I have been running very hot water temperatures ever
>since- borderline too hot. Has anybody else run into this problem?
>Lockwood tech help asked me why I made the switch, saying they don't do it
>themselves. Thanks
>Ben
>
>
Message 5
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| Subject: | Re: Evans Coolant |
Hello Ben
"I have been running very hot water temperatures ever since- borderline
too hot. Has anybody else run into this problem?"
Evans does not conduct as well as 50/50. I am not flying, but believe this
is normal on Europas.
I talked to Evans, and in automobiles they want you either to increase
flow with a more powerful pump, or more cooling area on a larger radiator,
or both to compensate for poorer conductivity.
Once you reach higher temperatures, instead of boiling and not cooling
hardly at all like 50/50, Evans will conduct a lot more, this is the real
advantage. Did you calibrate your gauges to see if they are remote close
to accurate?
Downsides besides thermal conductivity less than 505/50, price, not
readily available local, need to flush, is that it is flammable.
I am going to try Evans on my 914 Europa first.
Ron Parigoris
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