---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Thu 04/26/18: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 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 _____________________________________ Time: 03:32:42 AM PST US Subject: RotaxEngines-List: Rotax 914 - at which CHT does the coolant boil? From: "Roland" 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 _____________________________________ Time: 07:30:32 PM PST US From: Jim Thomson Subject: Re: RotaxEngines-List: 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 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 > > =========== =========== =========== =========== =========== > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.