Today's Message Index:
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1. 03:32 AM - Rotax 914 - at which CHT does the coolant boil? (Roland)
2. 07:30 PM - Re: Rotax 914 - at which CHT does the coolant boil? (Jim Thomson)
Message 1
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| Subject: | Rotax 914 - at which CHT does the coolant boil? |
Hi,
this year again an extended ground run was necessary at the holding point at the
AERO in Friedrichshafen.
Since I had to taxi in OAT of 25C/77F first on soft ground with high power and
thereafter in a stiff tailwind to the end of the runway to wait in the queue,
my CHT climbed to 122C/251F. After I positioned myself a bit into the wind and
close behind a Mooney to profit from its propwash the CHT settled on 118C/244F
and decreased fast to normal after take off.
Does anyone know, how the CHT correspond with the actual coolant temperatures?
At which CHT is it advisable to shut down the engine?
Regards
Roland
PH-ZTI
Europa XS TG 914
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=479564#479564
Message 2
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| Subject: | Re: Rotax 914 - at which CHT does the coolant boil? |
Roland:
May I recommend Wayne's Waterless Coolant for your R912 application. There
are a number of advantages over traditional water/ethylene/glycol coolant.
The higher boiling point reduces internal flash boiling within your engine,
your specific concern with over heating on the ramp would be reduced and
likely eliminated. Further advantages, less internal corrosion, improved
heat transfer, lower cooling system pressure. This coolant is popular in
NASCAR, Off Road racing, and has worked well for me in my R582 powered Mk3
and my Ford Ranger Prerunner. You may want to review these two links.
Tailwinds to you
https://www.evanscoolant.com/how-it-works/
https://www.evanscoolant.com/how-it-works/
Jim
On Thu, Apr 26, 2018 at 3:32 AM, Roland <schmidtroland@web.de> wrote:
>
> Hi,
>
> this year again an extended ground run was necessary at the holding point
> at the AERO in Friedrichshafen.
>
> Since I had to taxi in OAT of 25=C2=B0C/77=C2=B0F first on soft ground wi
th high
> power and thereafter in a stiff tailwind to the end of the runway to wait
> in the queue, my CHT climbed to 122=C2=B0C/251=C2=B0F. After I positioned
myself a
> bit into the wind and close behind a Mooney to profit from its propwash t
he
> CHT settled on 118=C2=B0C/244=C2=B0F and decreased fast to normal after t
ake off.
>
> Does anyone know, how the CHT correspond with the actual coolant
> temperatures? At which CHT is it advisable to shut down the engine?
>
> Regards
> Roland
> PH-ZTI
> Europa XS TG 914
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=479564#479564
>
>
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