X
4
MR
250
MexAir RC
1
X
4
MR
Manual
(See our website
www.mexairrc.com
for our upcoming video series on
X
4
MR
Construction))
Introduction
Congratulations on your purchase of the MexAir RC
X
4
MR
250 FPV Race Quadcopter. This quad has
some very unique design features that allow for advanced flight characteristics. The built-in
configurations enhance maneuverability, speed and load handling capability. Some of these are
described below and throughout the build sections of this manual. Besides the advantages described
below are the less obvious materials making up the airframe. Most quality multirotors use some form of
carbon fiber in their design. We have chosen the more costly but highest quality aerospace
quasi-
isotropic
carbon fiber. Rather than describe the benefits of this material, especially when used in
conjunction with a light-weight core, you may wish to simply “Google” the terms to find the vast amount
of technical data supporting the use of this grade of carbon fiber in light-weight rugged, rigid, and strong
applications.
MexAir RC, located in Central New York, is the designer and manufacturer of the
X
4
MR
250 Class
Racing Quad airframe. We specialize in the design and construction of the airframe. Since the various
electronic components and peripherals are widely available through many sources, our focus is on
providing a unique platform for the already available devices. The experienced builder will already know
much of the information – but we decided to cover details not always found in build manuals –
especially considering some of the unique features of the
X
4
MR
.
The
X
4
MR
carbon fiber laminated airframe design, materials, and methods of construction create an
assembly that allows for:
Enhanced aerodynamics due to the ability to embed wiring within airframe structural
components thus reducing turbulence and drag
Elimination of the typical “lightening holes” in areas of the airframe to improve strength and
rigidity, additionally reduce turbulence, while at the same time reducing airframe weight when
compared to typical solid carbon fiber frame materials used in many other multirotor copters
Reduced induced vibration through use of vibration damping body & arm core material –
resulting in better video quality
Electronic component placement flexibility due to:
o
ease of mounting additional accessory items to the CF frame using simple self tapping
screws
Completed
X
4
MR Airframe
Total Weight as
Pictured: 111 Grams
