remember that larger can also equate to heavier. We also suggest
that you routinely use an Expanded Scale Voltmeter (ESV) at the
field to check the charge condition of your batteries. This common
piece of field equipment can save your model!
ENGINE SELECTION
The SIG CAP 231EX ARF has been flown with a variety of 2 and
4-stroke engines. As everyone knows, there is no substitute for
power and the engines recommended for this model all provide
good power margins. Naturally, the larger engines in this range
make more power and will fly the CAP with more authority than the
smaller engines. It is simply a matter of how you want to fly this
airplane. We can tell you that our testing with both the Irvine 1.20
and 1.50 2-stroke engines was very good. Both engines make
great power and are easy to install and operate. In the case of the
1.50, we use a 16 x 8 APC prop and find the power sufficient to
achieve excellent vertical performance, with power to spare. When
using a 2-stroke engine, mufflers are always a problem. But not in
this case! SIG stocks a special in-cowl muffler for use with the
CAP and either the Irvine 1.20 or 1.50 engines. This muffler is very
effective, fits perfectly and was expressly designed for use in the
CAP. It is SIG part number IRV120150M. In the 4-stroke range,
good engine choices might be the YS 1.20 or 1.40 and
others such as the Saito 1.20, 1.50, or the newer 1.80.
We have done no testing of gasoline engines for this model and
cannot recommend any one particular engine over another.
However, should you decide to power your CAP with a gasoline
engine, be very sure to use gasoline compatible fuel tubing and a
fuel tank meant for gasoline.
TOOLS AND SUPPLIES
The CAP ARF requires a variety of typical hobby tools and
supplies found in most workshops. For example, you will need a
power drill, a selection of drill bits, a Dremel® Tool, screwdrivers
(both slotted and phillips), a soldering iron and solder, pliers, a
hobby knife with a selection of blades, a ruler, a tape measure,
masking tape, wax paper, petroleum jelly, threadlocking
compound, such as Loctite®, etc.
You will also need a variety adhesives. We suggest you have both
thin and thick SIG CA glues handy, as well as both 5 and
30-minute epoxy glues. For ease of mounting the elevator splitter
cables, we found that clear silicon adhesive works great. These
assembly instructions will be specific regarding adhesives. While
we all have our own preferences, we would urge you to give
careful consideration to these suggestions.
KIT CONTENTS
The following is a complete list of every part included with your
CAP 231EX ARF kit. This kit was packed and inspected at the SIG
factory. Each part has been individually inspected and packed by
SIG employees. We urge you to be as careful as we have been,
using the check-off blocks to inventory your kit before beginning
assembly.
❑
1 Fuselage, covered
❑
1 Wing Set, covered
❑
1 Aileron Set, covered
❑
1 Aileron Servo Hatch Cover Set, covered
❑
1 Wing Bolt Plate, covered
❑
1 Vertical Fin, covered
❑
1 Rudder, covered
❑
1 Horizontal Stabilizer, covered
❑
1 Elevator Set, covered
❑
1 Fiberglass Cowl, painted
❑
1 Molded Plastic Canopy Base, painted
❑
1 Molded Plastic Tail Fairing, painted
❑
1 Fiberglass Wheel Pant set, painted
❑
1 Canopy, clear plastic
❑
1 Tailwheel Assembly, complete
❑
1 2-3/4" dia. Spinner Assembly, complete
❑
1 500cc Fuel Tank Set
❑
1 .021x72" Rudder Pull-Pull cable
❑
4 3/32"O.D.x1/2" Alum. Pull-Pull Crimps
❑
2 4-40 Threaded Rigging Couplers
❑
1 1/8"dia.x2" Heat Shrink Tubing
❑
1 Pre-Cut Wood Parts Package:
4 Aileron Servo Mounts - 13/16" sq. x 3/8"
2 Rudder Servo Mounts - 3/8"x 9/16"x1"
1 Throttle Tube Mount - D/C 1/8" plywood
1 Wing Joiner - laminated plywood
1 Front Wing Dowels - 5/16" dia.x1-9/16"
10 Mounting Pads - 1/8"x3/4"sq. plywood
❑
1 2-56 Solder Clevis - Throttle
❑
14 4-40 Blind Mounting Nuts
❑
2 4-40 J-Bolts - Tank Mounting
❑
4 4-40 Solder Clevises - Aileron/Elevators
❑
7 4-40 Threaded R/C Links
❑
2 4-40 x 2/34" Threaded Pushrods - Ailerons
❑
2 4-40 x 2-1/8" Threaded Pushrods - Elevators
❑
4 4-40 x 3/8" Slotted Bolts - Wheel Pants
❑
6 4-40 Hex Nuts - Jam Nuts For Clevises
❑
10 4-40 x1/2" Nylon Bolts - Canopy/Cowl Mounts
❑
4 10-32 x 1" Socket Head Bolts - Motor Mounts
❑
4 10-32 Blind Mounting Nuts - Motor Mounts
❑
2 M5.5x35mm Nylon Wing Bolts
❑
3 M4x25mm Landing Gear Bolts
❑
12 #4x3/8" Sheet Metal Screws - Control Horns
❑
1 Main Landing Gear, .190 hardened aluminum
❑
2 3-3/16" dia. Main Wheels
❑
1 1-1/4" dia. Tailwheel
❑
2 Wheel Axles, hardened steel
❑
2 Lock Nuts for wheel axles
❑
4 Wheel Collars & Set Screws for wheel axles
❑
8 #2 Wood Screws for aileron servo hatches
❑
1 Motor Mount Set, glass-filled nylon
❑
1 Pushrod Connector Assembly - Throttle
❑
17 Nylon Double X Hinges
❑
17 Steel Hinge Pins
❑
3 Nylon Control Horns/RIGHT-Ail., Elev. & Rud.
❑
3 Nylon Control Horns/LEFT - Ail., Elev. & Rud.
❑
1 1/8"O.D.x18" Nylon Throttle P/R Tubing
2
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