Hi Don,
Not being one who believes "ignorance is bliss", I think it's a wise
thing to do.
You don't wind up with constant-monitoring information simultaneously
displayed, but you gain the capacity to:
1. Find (and periodically veriify) YOUR hottest cylinder
2. Observe if and when that changes (and pursue the pertinent
question of why the change). This, of course, presumes you
make it a point to periodically observe the temperature of each
other cylinder, like every half hour or forty-five
minutes...simple
"count-down" battery power timers are cheap and great for this.
3. Learn how progressive leaning affects each cylinder (hottest at
full rich may not be hottest leaned...you need to know that).
If you make up and post a "cheat note" showing "normal" CHT readings
for each cylinder (a) in climb and (b) in "normal" cruise (derived at
leisure for your plane at your rpm with your prop), any time you "cycle
through" the three cylinders NOT hottest you can be instantly and
easily aware of significant change(s). That can be vital information.
Gradual changes over time in such values gives insight into overall
engine condition.
I recommend also a similarly configured EGT. If I had to choose, the
EGT is a better tool for efficient leaning in cruise at altitude.
Regards,
WRB
--
On May 20, 2010, at 18:38, Donald wrote:
> My CHT has a broken lead, in replacing it I am toying with buying four
> leads and a switch so I can see ANY CHT. Is this a wise thing to do
> or just a waste of time?
