Great Planes Yak-55M 50-55cc Sport / 3D ARF - GPMA1230 - Manual (Page 4)

4
Muffler Recommendations
This airplane has been designed to accommodate a wide
variety of muffl er confi gurations. The stock muffl er and Pitts
style muffl ers will require cutting some of the cowl to provide
clearance. We have also provided a tunnel that can be used
with either a canister or tuned pipe. We fl ew our test model
with the canister. This provided very good power and quiet
fl ights. The choice is yours. The following are some of the
available muffl ers that will work with the Yak-55M:
❍ Bison Inverted Wrap Around Pitts Muffl er (BISG1052)
❍ KS Canister Model 86 with KS Flexible header
❍ KS Tuned Pipe Model 1060 with KS Flexible header
ADDITIONAL ITEMS REQUIRED
Required Hardware & Accessories
This is the list of hardware and accessories required to fi nish
the Yak-55M. Order numbers are provided in parentheses.
❍ 1/2 oz. [15g] Thin Pro ™ CA (GPMR6001)
❍ 1 oz. [30g] Medium Pro CA+ (GPMR6008)
❍ 1/2 oz. [15g] Thick Pro CA- (GPMR6013)
❍ Pro 30-minute epoxy (GPMR6047)
❍ Pro 6-minute epoxy (GPMR6045)
❍ Super RC Z 56 glue (JOZR5007)
❍ Drill bits: 1/16" [1.6mm], 3/32" [2.4mm], 1/8" [3.2mm],
3/16" [4.8mm], 13/64" [5.2mm
❍ #1 Hobby knife (HCAR0105)
❍ #11 blades (5-pack, HCAR0211)
❍ Masking tape (TOPR8018)
❍ Microballoons (TOPR1090)
❍ Threadlocker thread locking cement (GPMR6060)
❍ Denatured alcohol (for epoxy clean up)
❍ R/C foam rubber (1/4" [6mm] - HCAQ1000, or 1/2"
[13mm] - HCAQ1050
❍ 3’ [900mm] gasoline fuel tubing (GPMQ4135)
❍ 6" [150mm] servo extension (HCAM2701 for Futaba)
❍ Four - 12" [300mm] servo extension (HCAM2711
for Futaba)
❍ Two - 36" [914mm] servo extension (HCAM2726
for Futaba)
❍ Two - 1-1/2" [38mm] heavy duty servo arm
(FUTM2118)
❍ Two - 1" [25mm] heavy duty servo arm (FUTM2120)
❍ Two - Heavy duty switch harness (FUTM4385)
❍ Dubro
® Fuel Line Barb (DUB0670)
❍ Ernst Futaba charge jack (ERNM3001)
Optional Supplies & Tools
Here is a list of optional tools mentioned in the manual that
will help you build the Yak-55M.
❍ 21 st Century ® sealing iron (COVR2700)
❍ 21
st Century iron cover (COVR2702)
❍ 2 oz. [57g] spray CA activator (GPMR6035)
❍ Epoxy brushes (6, GPMR8060)
❍ Mixing sticks (50, GPMR8055)
❍ Mixing cups (GPMR8056)
❍ Hobbico
® Duster ™ can of compressed air (HCAR5500)
❍ Rotary tool such as Dremel ®
❍ AccuThrow ™ Defl ection Gauge (GPMR2405)
IMPORTANT BUILDING NOTES
● There are three types of screws used in this kit:
Sheet Metal Screws are designated by a number and a
length. For example #6
× 3/4" [19mm].
This is a number six screw that is
3/4" [19mm] long.
Machine Screws are designated by a number, threads
per inch, and a length. For example
4-40 × 3/4" [19mm].
This is a number four screw that
is 3/4" [19mm] long with forty
threads per inch.
Socket Head Cap Screws (SHCS) are designated by
a number, threads per inch , and a length. For example
4-40 × 3/4" [19mm].
This is a 4-40 SHCS that is 3/4"
[19mm] long with forty threads
per inch
● When you see the term
test fi t in the instructions, it means
that you should fi rst position the part on the assembly
without using any glue , then slightly modify or custom fi t
the part as necessary for the best fi t.
● Whenever the term glue is written you should rely upon
your experience to decide what type of glue to use. When
a specifi c type of adhesive works best for that step, the
instructions will make a recommendation.
● Whenever just epoxy is specifi ed you may use either
30-minute (or 45-minute) epoxy or 6-minute epoxy. When
30-minute epoxy is specifi ed it is highly recommended that
you use only 30-minute (or 45-minute) epoxy, because you
will need the working time and/or the additional strength.
●
Photos and sketches are placed before the step they refer
to. Frequently you can study photos in following steps to
get another view of the same parts.