Operators manual for
SPIRIT engine
E-DMB.E10.1
Edition Revision
TRANSLATED
FREE DISCLOSURE Page 10 of 102
02 SAFETY
02-01 Premise
Reading this manual alone is not sufficient to eliminate all dangers associated with
the installation and use of the propeller. However, the understanding and application
of the information contained therein is essential to use the engine properly and safely,
reducing the causes of potential risk.
The information, instructions, description of components and systems, as well as
illustrations and technical data contained in this manual are correct at the date of
publication of the revision. MWfly keeps its products constantly updated, and any
changes to parts of the engine must be understood in this sense, without forcing the
user to update what has been purchased: if this eventuality occurs, MWfly, through
its distribution and assistance network and through the website www. mwfly.it, will
disclose the mandatory nature of any update.
The choice to install and use this engine is entirely subject to the discretion and
responsibility of the aircraft manufacturer, assembler and owner: MWfly cannot
guarantee the suitability for use of the engine on any specific type of aircraft due to
the variety of design and project to which the aircraft themselves are subject; for this
reason MWfly is not responsible, nor can it issue any form of guarantee, regarding
components, accessories or parts of the aircraft that may be damaged during
installation or operation of the engine. The user assumes all risks deriving from the
use of the propeller and acknowledges that he is aware of the above.
MWfly reserves the right to make changes at any time, without notice and without
incurring any obligation. No part of this publication may be reproduced without written
permission.
02-02 Security elements
In order to better understand each aspect, it is important to divide the concept of
safety into two large subsets: passive safety and active safety.
02-02-01 Passive safety elements
Passive safety concerns engine design and installation criteria. Listed below are some
focal points.
Monolithic connecting rod: reduces the possibility of crankshaft failure, often
caused by positioning or tightening errors of the connecting rod cap.
Pistons machined from solid: greater safety and non-deformability induced by the
absence of intrusions from fusion, stresses from molding and the use of an alloy
with a low coefficient of thermal expansion.
Overhead camshaft: makes the use of hydraulic tappets (suitable with pushrod
and rocker arm distribution) unnecessary, eliminating the risk of valve breakage
in the event of a drop in oil pressure. Furthermore, this solution reduces the
