Alternate Method For Leaning On The Rich Side Of Peak; Leaning On The Lean Side Of Peak; Method For Checking The Mixture Setting When Operating On The Lean Side Of Peak - Electronics International UBG-16 Operating Instructions Manual

3. Alternate Method for Leaning on the Rich Side of Peak:

3. Alternate Method for Leaning on the Rich Side of Peak: 3. Alternate Method for Leaning on the Rich Side of Peak: 3. Alternate Method for Leaning on the Rich Side of Peak: 3. Alternate Method for Leaning on the Rich Side of Peak:
The following method will work only if the peak EGT is near the same temperature for every flight, which is
common for many engines operating on the rich side of peak.
Once the first cylinder to reach peak is found and you have enrichened the mixture to your normal exhaust
gas temperature during cruise, note the normal operating temperatures for each cylinder. Set each cylinder's
High EGT Limit at its normal operating temperature plus 15'F.
Thereafter when you lean, simply rough lean the engine until you see a High Limit Warning displayed on
the UBG. Enrichen the mixture slightly until the High Limit Warning goes out . . . you're done! You do not
have to enter the Lean Operating Mode nor do you have to look at the UBG display to perform this leaning
method.

4. Leaning on the Lean Side of Peak:

4. Leaning on the Lean Side of Peak: 4. Leaning on the Lean Side of Peak:
4. Leaning on the Lean Side of Peak: 4. Leaning on the Lean Side of Peak:
Once the first cylinder to reach peak is found, continue to lean the
mixture and push the Mode Switch to the left to cause the digital
display to show the Temperature Below Peak EGT for that cylinder
(example: "PEAK -25). Displaying the Temperature Below Peak EGT
makes it very easy to set the mixture for a specific EGT on the lean
side of peak.
As each cylinder begins to run on the lean side of peak, the cylinder
number above the appropriate column of bars will blink. You easily
can see as each cylinder reaches peak and you can see the status of
each cylinder (whether it's on the rich or lean side of peak) at a glance.
Note: The UBG eliminates false peaks on all cylinders, including Note: Note: Note: Note:
TIT.
Note: Note: Note: Note: The Step Switch may be used to display the Temperature Below Peak for any cylinder. This can be Note:
an invaluable tool in helping to lean your engine properly on the lean side of peak.
Note: Note: Each time the Mode Switch is pushed to the left, the right portion of the digital display will alternate Note:
Note: Note:
between displaying the current EGT and the Temperature Below Peak.

5. Method for Checking the Mixture Setting when Operating on the Lean Side of Peak:

5. Method for Checking the Mixture Setting when Operating on the Lean Side of Peak: 5. Method for Checking the Mixture Setting when Operating on the Lean Side of Peak:
5. Method for Checking the Mixture Setting when Operating on the Lean Side of Peak: 5. Method for Checking the Mixture Setting when Operating on the Lean Side of Peak:
If you are running all of the cylinders on the lean side of peak, you can do a quick check on your mixture
setting by performing the following:
A. A. A. A. A. Enter the Lean Operating Mode.
B. B. B. B. B. Very slowly enrichen the mixture until peak EGT is found. Since all of the cylinders are running
on the lean side of peak, all of the EGTs will rise. The first cylinder to reach peak will be the richest
cylinder.
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