|
|
Thanks for the comments, Tracy. I do indeed have mismatched EGTs. Rotor 1 is running at 1800 or a little higher and rotor 2 is running at 1700, lean, 60% power. Rotor 2 is consistently 100 or more degrees cooler than rotor 1. While the upper temperatures may be OK, the Mistral ECU reports a critical condition and drives me nuts. But, the mismatch is the concern. I get a warning indication at about 1700 and a critical indication at ~1780. I do not have a variable mixture control. All I have is a rich/lean momentary switch. So, only two conditions. But the lean condition always increases the EGTs by a good 100 degrees. My exhaust is also 321 SS, .065 wall. So, I'm not worried about that. Best Regards,
Steve Thomas
_______________________________________________________
On Apr 20, 2011, at 8:32 AM, Tracy wrote:
Hi Steve,
When you say your EGTs are too high, what do you consider too hot? When at WOT on takeoff mine run 1840 F which sounds high but after 1800+ hours I'm convinced that this isn't too hot. In cruise I lean it down to as low as 1520. My exhaust system is 321 SS, nothing exotic.
If your EGT problem is due to a clogged injector it will be obvious by very mis-matched EGTs. Unless of course you have two partly clogged injectors which is very unlikely. BTW, do you have a manual mixture control on the Mistral system?
|
|