Top Flite TOPA0140 - Manual (Page 4)

larger prop at lower RPM. This is often desirable for
scale realism. Many .61 cu. in. [10.0cc] 2-stroke
engines produce about as much horsepower as the
popular .75 [12.0cc] 2-stroke engines and will fly the
Spitfire extremely well. If you use a .61 [10.0cc] 2-
stroke, a ball bearing, Schnuerle-ported engine is
recommended. Our prototype
Spit weighs 9-1/2
pounds [4310g] with all of the options, including
flaps and the scale cockpit interior and was flown
with an O.S. .61 cu. in. [10.0cc] engine. This
engine provided excellent performance and
more than enough power. Although larger engines
can be used to power this model, the extra
horsepower is not needed.
The included adjustable engine mount will hold a
range of engines from .61 cu. in. [10.0cc] 2-stroke
through .91 cu. in. [15.0cc] 4-stroke.
EXHAUST SYSTEM
A Top Flite ® header and muffler are available that
will fit inside your cowl. They are designed for
2-stroke engines mounted inverted as used on the
model and shown in the instructions. We also used
a 3/4" [19mm] (inside diameter) Silicone tube
(AERG2220) to connect the muffler to the header.
Headers:
for O.S. ® .61SF, TOPQ7920
for SuperTigre ™ .61-.75 K series (muffler bolts
go through the muffler and screw into the
engine), TOPQ7925
for SuperTigre .61-.75 G series (muffler bolts
go through the engine and screw into the
muffler), TOPQ7926
.61-.75 Warbird In-Cowl Muffler, TOPQ7915
RETRACTABLE LANDING GEAR
You may build your Spitfire either with fixed or
retractable landing gear. Of course, fixed landing
gear will be easier to install than retracts; but we
provide detailed instructions on retract installation
so you should have no trouble. Your Gold Edition
Spitfire is designed to accept the Robart #605 90
degree HD (
Heavy Duty with 3/16" [4.8mm] struts)
pneumatic retracts. You may use other retractable
landing gear systems but it is up to you to make
any modifications that may be necessary. With the
Robart retracts, you may substitute scale
appearing oleo-type
Robostruts for the coil-and-
wire landing gear wires included with the retracts.
However, we recommend Robostruts only for
experienced fliers as they are very rigid and do not
absorb as much shock as standard wire-and-coil
landing gear. We mounted a micro servo in the
bottom servo tray to actuate the air control valve.
You could use a standard servo for this but you
may have to mount it in an alternate location.
For Retractable Landing Gear you will need
these items:
Robart #605 90 degree HD Pneumatic
Retracts (ROBQ0005)
Great Planes
® 2" x 3/16" [50 x 4.8mm] Bolt-On
Axles (GPMQ4278)
Great Planes 3/16" [4.8mm] wheel collars
(GPMQ4309)
Robart #188 Air Control Kit (ROBQ2388)
Robart #164G Hand Pump with Gauge
(ROBQ2363)
(2) Robart #190 Quick Connectors
(ROBQ2395 pkg. of 2)
Robart #189 Air Restrictor (ROBQ2395)
Servo for the air control valve (micro or mini
servo preferred)
FLAPS
Your Spitfire is designed to incorporate scale split
flaps; however, flaps are optional and not
necessary for an excellent flying experience.
Without flaps, the takeoff roll is longer and the
landing speed is faster.
The flaps are not difficult to build, but they do
require good craftsmanship to fit well. Flaps add
nicely to the model’s flight characteristics and scale
appearance. Only slight trim correction is needed
when flaps are used with the recommended throws.
Flaps are highly recommended for those who wish
to install them. You will find more information on the
use of the flaps in the
Flying section near the end of
this manual.
For Flaps, you will need the following
additional items:
Standard servo
6" [150mm] Servo extension
(8) Small Pivot Point Hinges
(GPMQ4001, pkg. of 15)
TOP FLITE SCALE ACCESSORIES
SCALE COCKPIT INTERIOR
Your Spitfire won’t be complete without the Top
Flite Spitfire Scale Cockpit Kit (TOPQ8403). The
cockpit kit includes the floor, side panels,
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