Today's Message Index:
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1. 06:56 PM - Re: CHT on new Rotax (Roger Lee)
2. 08:02 PM - CHT Temps (John Fasching)
3. 10:34 PM - Re: CHT Temps (Roger Lee)
Message 1
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| Subject: | Re: CHT on new Rotax |
248F is fairly hot for a 2000 rpm 5 min. run.
I would check my oil and coolant hoses for kinks. I take it you did an oil purge
before the first run? Even if there was no air flow 248F at 2000 for 5 min.
is on the high side. My gut feeling is it is something with the two flows above.
There are a lot of variables here. Things like type of plane, cowling, prop setup,
fluid types ect... You would need to know a whole lot more to diagnose this
a little better.
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Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=300972#300972
Message 2
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I resolved this problem. I can only guess, but upon blowing into the
coolant tank I found that I could move air from my blowing into the
system, and that came with some coolant movement....when I finished, the
coolant level was no longer at the top of the input point, but seemed
empty...it took a full liter to refill the system. There had been no
leaks. I can only guess that somehow I had air 'trapped' in the
system...the thing that fooled me was that the hose from the radiator
was reasonably hot, so I assumed there was coolant being moved through
the system...perhaps there was, but it wasn't enough. After adding the
coolant the system appears fully normal. Prolonged running did not raise
the CHT much past 150. thanks for your input.
Message 3
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Hi John,
Glad it was an easy fix. I like those kinds. I just had a feeling it was a fluid
issue. Now it's time to have some fun and go fly. :)
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=300983#300983
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