|
Matt,
MAP/kPa |
MAP/Hg |
750 |
1300 |
1900 |
2250 |
2400 |
2500 |
2600 |
2700 |
|
| 104 |
30.7 |
16 |
17 |
18 |
19 |
21 |
21 |
21 |
20 |
|
| 95 |
28.1 |
16 |
18 |
20 |
21 |
22 |
22 |
22 |
21 |
|
| 85 |
25.1 |
16 |
19 |
21 |
22 |
23 |
23 |
23 |
22 |
|
| 75 |
22.1 |
17 |
20 |
22 |
23 |
24 |
24 |
24 |
24 |
|
| 70 |
20.7 |
17 |
21 |
24 |
25 |
27 |
27 |
27 |
27 |
|
| 60 |
17.7 |
17 |
22 |
26 |
30 |
31 |
31 |
31 |
30 |
|
| 40 |
11.8 |
17 |
23 |
30 |
34 |
35 |
35 |
35 |
34 |
|
| 30 |
8.9 |
17 |
24 |
31 |
36 |
37 |
37 |
37 |
36 |
|
|
|
|
|
|
|
|
|
|
|
|
| LSE True Timing Data |
RPM----> |
|
|
|
|
|
|
|
|
| MAP/kPa |
MAP/Hg |
750 |
1300 |
1900 |
2250 |
2400 |
2500 |
2600 |
2700 |
|
| 105.0 |
31 |
|
|
|
|
|
|
|
|
|
| 94.8 |
28 |
|
|
|
|
|
|
|
|
|
| 84.7 |
25 |
|
|
|
|
|
|
|
|
|
| 74.5 |
22 |
|
|
|
|
|
|
|
|
|
| 71.1 |
21 |
|
|
|
|
|
|
|
|
|
| 61.0 |
18 |
|
|
|
|
|
|
|
|
|
| 40.6 |
12 |
|
|
|
|
|
|
|
|
|
| 30.5 |
9 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| LSE True Timing Data |
RPM----> |
|
|
|
|
|
|
|
|
| MAP/kPa |
MAP/Hg |
1000 |
|
1700 |
2250 |
2400 |
2500 |
2600 |
2700 |
|
| 98.2 |
29 |
|
|
|
|
|
|
|
|
|
| 94.8 |
28 |
|
|
|
|
|
|
|
|
|
| 84.7 |
25 |
|
|
|
|
|
|
|
|
|
| 74.5 |
22 |
|
|
|
|
|
|
|
|
|
| 71.1 |
21 |
|
|
|
|
|
|
|
|
|
| 61.0 |
18 |
|
|
|
|
|
|
|
|
|
| 48.8 |
14.4 |
|
|
32.5 |
|
|
|
|
|
|
| 33.9 |
10 |
34.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Electroair |
|
RPM----> |
|
|
|
|
|
|
|
|
| MAP/kPa |
MAP/Hg |
750 |
1300 |
1900 |
2250 |
2400 |
2500 |
2600 |
2700 |
|
| 105.0 |
31 |
35 |
18 |
21 |
24 |
24 |
25 |
25 |
25 |
|
| 94.8 |
28 |
35 |
18 |
21 |
24 |
24 |
25 |
25 |
25 |
|
| 84.7 |
25 |
35 |
18 |
21 |
24 |
24 |
25 |
25 |
25 |
|
| 74.5 |
22 |
35 |
22 |
25 |
28 |
28 |
29 |
29 |
29 |
|
| 71.1 |
21 |
35 |
24 |
27 |
30 |
30 |
31 |
31 |
31 |
|
| 61.0 |
18 |
35 |
30 |
33 |
36 |
36 |
37 |
37 |
37 |
|
| 40.6 |
12 |
35 |
42 |
42 |
42 |
42 |
42 |
42 |
42 |
|
| 30.5 |
9 |
35 |
42 |
42 |
42 |
42 |
42 |
42 |
42 |
|
|
|
|
|
|
|
|
|
|
|
|
| Electroair -5 timing |
RPM----> |
|
|
|
|
|
|
|
|
| MAP/kPa |
MAP/Hg |
750 |
1300 |
1900 |
2250 |
2400 |
2500 |
2600 |
2700 |
|
| 105.0 |
31 |
30 |
13 |
16 |
19 |
19 |
20 |
21 |
21 |
|
| 94.8 |
28 |
30 |
13 |
16 |
19 |
19 |
20 |
21 |
21 |
|
| 84.7 |
25 |
30 |
13 |
16 |
19 |
19 |
20 |
21 |
21 |
|
| 74.5 |
22 |
30 |
17 |
20 |
23 |
23 |
24 |
25 |
25 |
|
| 71.1 |
21 |
30 |
19 |
22 |
25 |
25 |
26 |
27 |
27 |
|
| 61.0 |
18 |
30 |
25 |
28 |
31 |
31 |
32 |
33 |
33 |
|
| 40.6 |
12 |
30 |
37 |
40 |
42 |
42 |
42 |
42 |
42 |
|
| 30.5 |
9 |
30 |
42 |
42 |
42 |
42 |
42 |
42 |
42 |
|
| Note: 16 BTDC base timing reduced to 11
BTDC |
|
|
|
|
|
|
| See CAFÉ Ignition
articles. |
|
|
|
|
|
|
|
|
Electroair timings were computed according to the CAFE ignition
articles. I don't know if they are completely accurate. Matt, I
question your timings for 750 RPM - every one else would use 30-35 degrees
BTDC. The next report will be on Baseline data I collect from my
system. I might even mention how fast I am going.
BTW, mixture is an apparent timing shift. Rich burns faster than
lean. So.......
LOP, lower MAP - advanced spark delivers power at the right
time. ROP, higher MAP - means less advance or even retard. This
may be why my LASAR system showed slight improvement at 8000-9000 MSL (24-23
MAP) when the backup mags (25 deg) were used instead of the advanced spark
electronic part of the system. Also, why the "less aggressive" IO360
controller was slightly better than the O320. I always ran ROP when those
tests were done.
When the weather clears, I will be filling out my matrix with data
collected in my aircraft/engine configuration.
I love experimentation. Flying just makes you think about it more
before entering the air.
Scott Krueger
AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL
(KARR)
Training is no substitute for fear,risk analysis and
judgement.
Recognize the links in the chain of errors before the last link
joins to the anchor.
In aviation, as in life, nothing fixes itself.
There
ain't no tow truck when you are positive
AGL.