used with the recommended throws. They are a
highly recommended
fun option for those who
wish to install them. More information on the use
of the flaps may be found in the “flying” section.
For Flaps, you will need the following
additional items:
❏
(2) Standard servos.
❏
Servo “Y” Harness
❏
Robart #309 Super Hinge Points
(ROBQ2509)
RETRACTABLE LANDING GEAR
You may build your T-34B Mentor either with fixed
or retractable landing gear. Fixed gear is easier to
install and all the hardware you need for fixed gear
is supplied with this kit. We also provide detailed
instructions on how to install retractable landing
gear available from Robart. We chose the Robart
630BNZ retracts which were specifically designed
for this model. This landing gear is an adaptation
of the Robart #640 mains and the #631 nose gear.
Other systems may work as well but it is up to you
to make modifications to fit them into the model.
For Retractable Landing Gear you will need
these items (not included):
❏
Robart 630BNZ Retracts (ROBQ1620)
❏
Standard Air Kit (ROBQ2302)
❏
Standard or mini servo
❏
Extra Pressure Tubing (ROBQ2369)
❏
Tubing Connectors (ROBQ2395)
❏
2-56 Pull-Pull cable system (DUBQ1417)
❏
(2) Screw-Lock Connectors (GPMQ3870)
❏
(2) 2-56 Ball Link set (GPMQ3840)
❏
(2) 1/4” Wheel Collars (DUBQ1200)
❏
(1) Nylon Clevis and Pushrod (GPMQ3770)
❏
(8) #4 x 3/8” [9.5mm] flat head sheet
metal screws
FLAPS
Your T-34B Mentor is designed to incorporate
scale 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 while causing no bad effects.
Only slight trim correction is needed when they are
DECISIONS YOU MUST MAKE
ENGINE SELECTION
Recommended engine size:
.60 to .91 cu. in. [9.8 to 14.9 cc]
2-stroke
.90 to 1.20 cu. in. [14.7 to 19.7 cc]
4-stroke
Your Top Flite Gold Edition T-34B Mentor will perform
well
with any of the engines within the recommended
range. The 4-stroke engines and most .90 [14.7 cc]
2-stroke engines will turn a larger prop at lower RPM.
This is often desirable for scale realism. Many .60
[9.8 cc] 2-stroke engines produce about as much
horsepower as the popular .75 [12.3 cc] engines and
will fly the T-34B Mentor well. If you use a .60 [9.8 cc]
2-stroke, a ball bearing, Schnuerle-ported engine is
highly recommended. Some newer .70 [11.5 cc]
4-stroke engines also produce enough power as well.
Our prototype T-34B Mentor weighed 13 pounds
[5900 g] with all of the options, including flaps and
scale cockpit interior. It was flown with the
SuperTigre
®
G-75, that turned a Top Flite Power
Point
®
12 x 8 prop at 9,600 RPM.
This engine
provided excellent performance and more than
enough power, even in gusty winds.
Although
larger engines can be used to power this model,
the extra horsepower is
not
needed.
The included Great Planes
®
Adjustable Engine
Mount will hold a range of engines from .60 [9.8
cc] 2-stroke through 1.20 [19.7 cc] 4-stroke.
EXHAUST SYSTEM
A Top Flite header and muffler are available for
most of the popular 2-stroke engines that will fit
inside your cowl. They are designed for 2-stroke
engines mounted horizontally, as used on the
model and shown in the instructions. For part
numbers see the accessory list on page 6.
This muffler system is not recommended for
engines larger than .75 [12.3 cc] as it may cause
the engine to overheat.
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Summary of Contents for T-34B MENTOR
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