R/C Airplane Information
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R/C Airplane Information |
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2-Cycle Engines 4-Cycle Engines
+--------------------------------+ +----------------------------------+
| |Starting |Alternate | | |Starting | Alternate |
|Engine Size|Propeller|Propellers| |Engine Size|Propeller| Propellers |
+-----------+---------+----------| +-----------+---------+------------|
| .049 | 6x3 | 5-1/4x4, | | .20 - .21 | 9x6 | 9x5,10x5 |
| | | 5-1/2x4, | +-----------+---------+------------|
| | | 6-3-1/2, | | .40 | 11x6 | 10x6,10x7 |
| | | 6x4, 7x3 | | | | 11x4,11x5 |
+-----------+---------+----------| | | | 11x7, |
| .09 | 7x4 | 7x3, | | | | 11x7-1/2, |
| | | 7x4-1/2, | | | | 12x4,12x5 |
| | | 7x5 | +-----------+---------+------------|
+-----------+---------+----------| | .45 - .48 | 11x6 | 10x6,10x7 |
| .15 | 8x4 | 8x5, 8x6,| | | | 10x8,11x7 |
| | | 9x4 | | | | 11x7-1/2, |
+-----------+---------+----------| | | | 12x4,12x5 |
| .19 - .25 | 9x4 | 8x5, 8x6,| | | | 12x6 |
| | | 9x5 | +-----------+---------+------------|
+-----------+---------+----------| | .60 - .65 | 12x6 | 11x7-1/2, |
| .29 - .30 | 9x6 | 9x7, | | | | 11x7-3/4, |
| | | 9-1/2x6, | | | | 11x8,12x8 |
| | | 10x5 | | | | 13x5,13x6 |
+-----------+---------+----------| | | | 14x5,14x6 |
| .35 - .36 | 10x6 |9x7, 10x5,| +-----------+---------+------------|
| | |11x4 | | .80 | 13x6 | 12x8,13x8 |
+-----------+---------+----------| | | | 14x4,14x6 |
| .40 | 10x6 |9x8, 11x5 | +-----------+---------+------------|
+-----------+---------+----------| | .90 | 14x6 | 12x10,13x8 |
| .45 | 10x7 |10x6,11x5,| | | | 14x8,15x6 |
| | |11x6,12x4 | +-----------+---------+------------|
+-----------+---------+----------| | 1.20 | 16x6 | 14x8,15x6 |
| .50 | 11x6 |10x8,11x7,| | | | 15x8,16x8 |
| | |12x4,12x5 | | | | 17x6,18x5 |
+-----------+---------+----------| | | | 18x6 |
| .60 - .61 | 11x7 |11x7-1/2, | +-----------+---------+------------|
| | |11x7-3/4, | | 1.60 | 16x6 | 15x6,15x8 |
| | |11-8,12x6 | | | | 16x8,18x6 |
+-----------+---------+----------| | | | 18x8,20x6 |
| .70 | 12x6 |11x8,12x8,| +-----------+---------+------------|
| | |13x6,14x4 | | 2.40 | 18x10 | 18x12,20x8 |
+-----------+---------+----------| | | | 20x10 |
| .78 - .80 | 13x6 |12x8,14x4,| +-----------+---------+------------|
| | |14x5 | | 2.70 | 20x8 | 18x10,18x12|
+-----------+---------+----------| +-----------+---------+------------|
| .90 - .91 | 14x6 |13x8,15x6,| | 3.00 | 20x10 | 18x12,20x10|
| | |16x5 | +----------------------------------+
+-----------+---------+----------|
| 1.08 | 16x6 |15x8,18x5 | T e l e H o b b i e s R / C
+-----------+---------+----------| Aircraft Propeller Chart
| 1.20 | 16x8 |16x10,18x5|
| | |18x6 | Pitch: think of pitch in the
+-----------+---------+----------| same way you think of threads
| 1.50 | 18x6 |18x8,20x6 | on a screw. A pitch of 6 means
+-----------+---------+----------| in one revolution, a propeller
| 1.80 | 18x8 |18x10,20x6| should move forward 6 inches.
| | |20x8,22x6 |
+-----------+---------+----------| Generally, greater pitch yields
| 2.00 | 20x8 |18x10,20x6| faster cruising speeds; lesser
| | |20x10,22x6| pitch provides better climbing.
+--------------------------------+
Engine Size Conversion Chart
Cubic Inches to Cubic Centimeters
CI CC CI CC CI CC CI CC
049 = .8 .29 = 4.8 .80 = 13.0 2.00 = 32.8
09 = 1.5 .35 = 5.7 .91 = 14.9 2.40 = 39.3
15 = 2.5 .40 = 6.5 1.20 = 20.0 2.70 = 44.3
9 = 3.1 .46 = 7.5 1.50 = 25.0 3.00 = 49.2
1 = 3.5 .50 = 8.2 1.60 = 26.2
25 = 4.1 .61 = 10.0 1.80 = 30.0
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