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Here's a List of What We Used to Finish Our Excite 90L ARF:
This section describes our recommendations to help you in deciding which types of accessories to purchase for
your new Modeltech Excite 90L ARF. These suggestions are not set in stone, but they should provide you with a
good starting point.
SECTION 1: OUR RECOMMENDATIONS
What Engine Should I Use?
The Excite 90L flies great with a strong .61 size two stroke engine. The airplane is designed around this size engine, so
just about any brand .61 two stroke will fit easily within the cowling, even using the standard muffler that is included with the
engine. No after-market muffler will be necessary. For general sport-flying and basic aerobatics, we suggest using the
Magnum XLS .61 two stroke engine.
For extreme 3D and freestyle aerobatics, we suggest using a small block .91 two stroke engine. These engines have a
small footprint, so they will fit within the cowling and won't require an after-market muffler, and they are very lightweight for
the power they produce. Using this engine will result in an airplane that has an enormous power-to-weight ratio, so
extreme 3D and freestyle aerobatics can be flown. If you decide to use a .91 small block two stroke, we suggest using the
Magnum XLS .91A two stroke engine.
What Radio System & Servos Should I Use?
For typical sport-flying and general aerobatics, a standard 4 channel radio system will be more than adequate. Since the
ailerons use separate aileron servos, you will need to use a servo Y-harness to join them. The Excite 90L ARF is a big
airplane with large control surfaces, so using high-torque ball bearing servos is a must. We strongly recommend that the
servos used on the control surfaces produce no less than 65 ounce/inches of torque each.
For 3D aerobatics, a four or more channel computer radio with mixing capabilities will be required. Since there are two
separate aileron servos used, they can be plugged separately into the receiver, allowing you the capability of flaperon or
spoileron mixing and differential. Again, we strongly recommend using high-torque ball bearing servos on all of the
control surfaces.
What Else Do I Need?
The Excite 90L ARF includes most of the hardware you'll need to finish the airplane. You will need to purchase separately
a spinner, two aileron extension cables, one Y-Harness, an in-cowl fueling valve and some basic building materials, such
as adhesives, protective foam rubber for your radio equipment, and fuel tubing. We've provided a list below of the items we
used on the airplane shown in this instruction manual.
IMPORTANT
The part numbers listed for the Hitec and Cirrus servos, and the Cirrus accessories are compatible with Hitec and JR radio control
systems. These items are also available with connectors that are compatible with Futaba and Airtronics radio control systems.
QTY. 1
444728
Cirrus Servo Y-Harness (optional)
QTY. 1
115493
Thunderbolt R/C Long Glow Plug
QTY. 1
115923
Global XX Silicon Fuel Tubing
QTY. 1
237500
Magnum In-Cowl Fueling Valve
QTY. 1
868638
Dubro 1/4" Protective Foam Rubber
QTY. 1
210806
Magnum XLS .91 Two Stroke Engine
QTY. 1
237154
Magnum 2-1/2" Chrome Spinner*
QTY. 1
609560
APC 14 x 6 Composite Propeller
QTY. 4
759394
Hitec HS-605BB High-Torque Servos
QTY. 1
444107
Cirrus CS-71 Standard Servo
QTY. 2
444713
Cirrus 12" Servo Extensions
*Includes 5/16 - 24 shaft adapter