Table of Contents
Advertisement
CARF-Models Extra 330SC (3.1m)
Engine and Exhaust
Installation
Here we show the installation of a Desert Aircraft DA-200 on
KS canisters and DA-170 on KS tuned pipes which both are
combinations with lots of power, and a very good throttle
response throughout the whole range. Both motors fit fully
enclosed in the cowling, and no cutouts or holes are needed.
Of course many other engines in the 150-200 cc range are
suitable as well. All measurements shown here are
according to this setups. The integrally-moulded motor dome
is reinforced inside with plenty of carbonfibre during
manufacture
and
strengthening, and the plywood reinforcement plate on the
inside surface is already installed for you. You don't have to
worry about right-thrust or down/upthrust, as long as you
follow the already predefined front of your cowling. Only
make sure that the spinner alignes perfectly.
To set the positions for the 4 mounting holes for the DA-200,
first accurately mark a vertical centreline on the front of the
plywood firewall, in line with the joint seam of the fuselage.
Then set-out dimensions for the DA200 mounting as shown
on the photo. The positions should be controlled definitively
before drilling the holes. For that purpose you can use the
plywood reinforcement plate supplied in the kit. Now you
need four screws with two nuts on each to adjust right- and
upthrust. Assemble it as shown on the photos (reference
values for the distances can be found on the sketch). Put the
fuselage in vertical position and place the engine, pre-
assembled with the plywood reinforcement plate, on the
motor dome. After you have checked the dimensions drill the
holes and glue the plywood reinforcement plate in place.
Don't forget to note the dimensions of the distances so that
they can be easily replaced by the pack of washers.
If you decided to use any other engine and need to set
different positions for the 4 mounting holes, the easiest way
to achieve perfect fit of it will be to place the engine in a
vertical position of the fuselage with the bottom cowling
mounted (for example at the hallway). So, the engine can be
adjusted easily to the motor dome till the spinner fits
perfectly to the cowling.
This procedure also will be necessary if you want to install
any 2-cyl twin engine (e.g. DA170) so that the adapting kit
supplied in the kit is needed.
First build up the plywood cuboid which will give your motor
dome the right stability. Put all plywood plates together as
shown on the photo using some epoxy and micro-balloon
mixture.
does
not
require
15
any
additional
www.carf-models.com
The fuselage in vertical position
at the hallway
Some measure for DA200
The four screws with two nuts
on each to adjust right- and
down/upthrust.
Advertisement
Table of Contents
