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Build Requirements
Additional Components:
Engine
•
120cc twin cylinder. (DA120 used in this manual)
Exhaust
•
We strongly suggest the use of canister mufflers, obviously a lot is dependent on your engine selection, the fol-
lowing types will fit easily to the SU-31
MTW TD75
KS86
Both MTW and KS make adjustable headers to suit their canisters.
Fuel
•
40oz (1200cc) DuBro fuel tank #690
Tygon fuel line
Fuel dot or filler
Fuel filter
Wheels
•
4.5
5 . DuBro, Kavan, White Rose, or similar
Tailwheel assembly, Medium Size Carbon Leaf, J&J or White Rose (or similar)
Servo s
•
High quality high torque for all flying surfaces (8 required), we recommend;
JR NX8921 or DS6311HV
Futaba S9075SB or BLS172SV
Throttle any good quality servo, but make it a good one. A good constant idle requires a precise servo, such
as a JR DS8231, or a Futaba S3071HV
Alloy Servo Arms
•
SWB, Secraft, Hanger 9 or similar. 1.5 for Elevators and aileron. (Phenolic rudder arm supplied)
Spinner
•
4.5 P51style TruTurn, or 4.5 Mejzlik Carbon
Receiver and Ignition Batteries
•
Owner s choice
Battery straps
Adhesives:
Epoxy
•
Loctite Hysol 9462, recommended. Or 30min epoxy. (If using 30min epoxy you will need micro balloons and (or)
milled glass fibre. Hysol 9462 does not require these items)
CA Glue
•
Thick and thin types, as well as plastic applicable CA
Silicone Adhesive (Silastic, optional for canopy)
•
We used Hysol 9642 in all areas where epoxy was required during the build for this manual.
For surface cleaning we recommend old fashioned liquid lighter fluid such as Ronsonol . Do not use acetone for
cleaning the external painted surfaces, damage to the paint could occur. (If in doubt, test on a small area that will not
be seen).
Sukhoi SU 31—2.75m/2.6m
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