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TECHNICAL DATA HKS700E
Dimensions and Weights
| Bore: |
85 mm |
| Stroke: |
60 mm |
| Total piston displacement: |
680 c.c. |
| Compression ratio: |
11.3:1 |
| Direction of crankshaft rotation: |
Clockwise (looking from pilot seat, tractor configuration) |
| Direction of propshaft rotation: |
Counter clockwise |
| Weight: |
103 LBS. (47 kg) dry, with all electrical equipment, electric
starter, carburetors and gearbox. |
| Weight: |
121 LBS. total system, with exhaust, oil tank and Oil cooler. |
Equipment
| Ignition unit: |
Dual CDI (capacitive discharge type) |
| Ignition timing: |
10 DEG. B.T.D.C (below 2000rpm)
23 DEG. B.T.D.C (over 4000rpm) |
| Spark plugs: |
HKS F40i (NGK Heat range #8) |
| Electrode spacing: |
.031" (0.8 mm) |
| Generator performance: |
210W DC |
| Carburetor: |
Bing CV Carb type 64/32 |
| Air filter: |
K&N tapered. |
| Fuel pump: |
Pneumatic, impulse from the intake |
| Fuel filter: |
Mesh type, 15 microns maximum. |
| Starter: |
12V/0.6KW,engagement via gear reduction and overrunning clutch |
Performance
| Take-off power (3 min.). |
60HP at 6200 rpm |
| Max continuous power. |
56HP at 5800 rpm |
RPM limitations
| Max. permissible RPM. |
6200 rpm |
| Max. continuous RPM. |
5800 rpm |
| Idle RPM. approx. |
1400 rpm |
Fuel consumption
| Consumption @ max. continuous RPM: |
4.2 GPH. (16 L/H) |
| Consumption @ 75%: |
3.4 GPH. (13 L/H) |
Information about fuels and lubricants
| Fuel: |
Automobile fuel, unleaded premium 92 Octane (RON) minimum. |
| Fuel pressure: |
2.2 psi - 3.0 psi nominal, 4.3 psi Max. (0.15 - 0.2 bar nominal 0.3
bar max.) |
| Oil type: |
Multi-grade oils SAE15W-50. Use only brand-name oils for automobile
engines. |
| Oil volume: |
4.2 quarts (4 Liters) This will vary based on the oil line layout
and oil cooler size used. Oil level is between * and 2/3 of oil tank
after run up. |
| Oil consumption: |
1/10th quart per hour, Max. (0.1 L/h) |
| Oil pressure: |
58 psi (4 bar) Max.
29 psi (2 bar) Min. @ 5000 rpm
17 psi (1.2 bar) Min. @ idle rpm |
Oil temperature:
(readings off of the feed line into engine): |
Min. 122 Deg. F (50 Deg. C)
Max. 212 Deg. F (100 Deg. C) |
| Optimum oil temperature range: |
140 - 194 F. (60 - 90 C) |
| CAUTION! |
- Don't use any aircraft engine oils and additives.
- You must install the oil cooler in the return line to the oil
tank.
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Cooling system
- Free air cooling.
- For the engines with full-cowled engine installation,
ducting is required to properly channel cooling air to the cylinders.
Cylinder head temperature
- Max. permissible cylinder head temperature (measured on the
hottest cylinder): 446 Deg. F (230 Deg. C)
Propeller drive-reduction gear
- Reduction ratio: crankshaft to propshaft=2.58:1
- Torsional shock absorption is based on progressive
cushioning from an axial spring loaded hub with dogs.
Propeller mass moment of inertia
- The maximum permissible propeller mass moment of inertia:
3000 kg cm2 (ft/lbs)
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