STEMME S12 User Manual

DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: 
CHAPTERPAGE 312
MAINTENANCE MANUAL STEMME S12
• In the liquid cooling system, the combined function of the expansion reservoir and rell
container was split up in two separate containers, with the expansion reservoir located
above the engine and the rell container on the left side of the re-wall.
•
The ignition unit is installed above of the engine slightly behind the original ROTAX-position.
• The throttle levers on the carburetors have been slightly modied (modication does not
aect the throttle rigging of the original engine) and additional springs have been installed
(pulling towards full-power position) to compensate for friction due to the long control
cables between cockpit and engine bay.
Engine performance data of the ROTAX 914 F2/S1 are identical to those of the ROTAX 914 F.
ENGINE PERFORMANCE DATA
Max. T/O power. 84.5 kW at 5800 RPM 113.2 hp
Max. continuous power. 73.4 kW at 5500 RPM 98.4 hp
Engine reduction gear ratio i = 2.4286
Max. propeller 2650 RPM
3.4.2 LUBRICATION SYSTEM
SYSTEM DESCRIPTION
Refer to Maintenance Manual (Heavy Maintenance) for ROTAX Engine Types ROTAX 912 and 914
Series, section 79.
The ROTAX 914 is equipped with a dry-sump pressure lubrication system. The pumps are part of
the engine. It was necessary to modify the routing of the oil pipes between oil pump and turbo-
charger. Oil is returned from the crankcase to the oil tank by compression blow-by pressure, and
from the turbocharger via the secondary oil pump (scavenge pump).
The oil tank is standard from ROTAX. It is installed behind the re-wall on the LH side of the
fuselage frame. The oil ller cap is below a service access in the upper center fuselage fairing.
Oil is taken in exible pipes from the oil tank through the re wall to the engine bay. Any exible
oil lines in the engine compartment are shrouded by re protective sleeves.
The oil cooler is installed on the RH side of the fuselage frame and supplied with air from the RH
cowl ap.

STEMME S12 Specifications

General

Brand	STEMME
Model	S12
Category	Aircrafts
Language	English