Walter Castor
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The Walter Castor is an aircraft engine from the Czechoslovak manufacturer Walter Motors as
development
The first version of the Walter Castor was developed in 1929. In 1932 the performance-enhanced Castor II appeared . A version expanded to nine cylinders was constructed in 1937/1938 under the name Super-Castor . In contrast to the previous versions, it was equipped with an epicyclic reduction gear , high altitude loader and automatic mixture and boost pressure control.
construction
The air-cooled seven-cylinder - four cycle - radial engine is made of steel liners with the twisted ribs, cylinders with light metal heads and has a dry sump - circulation lubrication . Each cylinder has two valves that are controlled by the cam disk via push rods and rocker arms, as well as a main and articulated secondary connecting rod. The crankshaft is split and runs in two roller bearings and one axial ball bearing.
use
- Aero A-35
- Aero A-211
- Aero A-304
- Avia B-122
- Avia F.VIIb / 3m
- Caproni ca.113
- Dornier Do K
- Fieseler F 1 Tiger Tern
- Letov Š-28
- Savoia-Marchetti p.71
Technical specifications
| Parameter | Walter Castor II | Walter Super-Castor I-MR |
|---|---|---|
| drilling | 135 mm | 135 mm |
| Hub | 170 mm | 146 mm |
| Displacement | 17.0 l | 18.8 l |
| compression | 6.0: 1 | 6.0: 1 |
| length | 1280 mm | k. A. |
| diameter | 1260 mm | 1190 mm |
| rated capacity | 275 hp (202 kW) at 1800 rpm | 400 hp (294 kW) at 2200 rpm |
| Full performance | 300 hp (221 kW) at 2000 rpm | 450 hp (331 kW) at 2400 rpm |
| Dry weight | 266 kg | 360 kg |
| Power to weight ratio | 0.88 kg / hp | 0.78 kg / hp |
| Displacement | 17.6 hp / l | 27.1 hp / l |
| Fuel consumption | 68 kg / h | 116 kg / h |
| Lubricant consumption | 3 kg / h at 275 PS (202 kW) | 8 kg / h at 430 PS (316 kW) |
| Octane number | 75 | 85 |
literature
- Werner von Langsdorff : Handbook of aviation . Born in 1939. 2nd, unchanged edition. J. F. Lehmann, Munich 1937, p. 533 .
