Relay 1200 P parts and equipment
Current build guide · Hardware fit record
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Print and fit prototype: physical printing, installed hardware and flight validation remain outstanding.
Selected parts are for the documented prototype. Confirm exact version, supplied hardware and current availability before purchase. Manufacturer dimensions are not proof of installed fit. Quantities below are installed quantities; pack contents may include spares.
| Installed quantity | Item | Specification / fit condition | Source |
|---|---|---|---|
| 2 | Brushless motors with supplied metal mounting crosses | SunnySky X2216 II 1250 KV short shaft. mass g each = 72; rotor diameter mm = 27.5; shaft diameter mm = 3.175; body length without shaft mm = 34; total length mm = 36.5; battery cells = 2–4S; manufacturer recommended esc A = 40 Installed front/rear propeller current, thrust, temperature and clearance are untested. | Manufacturer 1 |
| 2 | Skywalker 50A V2 regular 3–4S ESC | Hobbywing 80060442. continuous A = 50; peak A = 70; input = 3–4S; case mm = 60, 25, 8; mass g each = 36; built in BEC = 5 V / 5 A, disabled in this architecture; battery leads = 14 AWG ×100 mm, no input connector; motor leads = 16 AWG ×75 mm, 3.5 mm female bullets Select regular 50A V2, not 50A-6S / Plus; they have different envelopes. Delivered motor connector fit and harness current/thermal behavior require checks. | Manufacturer 1 Manufacturer 2 Manufacturer 3 |
| 1 | UBEC 10A HV 3–14S | Hobbywing 30608000. input = 3–14S; selected output V = 6; continuous A = 10; peak A = 25; case mm = 55, 25, 12; mass g = 35; receiver separation mm min = 50 Regulator rating does not establish the rating of one servo plug or receiver bus; measure voltage drop/current with simultaneous controls and gear, without deliberately stalling servos. | Manufacturer 1 Manufacturer 2 |
| 1 | Spektrum AR8020T receiver | SPMAR8020T. PWM channels = 8; case mm = 49, 30, 15; mass g = 16; input V = 3.5, 9; extra power header = SRXL2/Bind/Program/Batt; antennas mm = 155, 186; active tip mm = 31 No stabilization is specified. Set and verify the channel assignment and failsafe on the actual NX8. | Manufacturer 1 Manufacturer 2 |
| 6 | Analog control and steering servos | Hitec HS-65MG / 32065S. functions = 2 ailerons, 2 rudders, 1 elevator, 1 nose steering; voltage V = 4.8, 6.0; case mm = 23.6, 11.6, 24; datasheet mass g = 12.5; stall A at 6V = 1.2; spline = M25T, 5 mm; signal = Analog PWM; 1500 us center, published ±60 degrees at 900–2100 us Product page and PDF mass differ; use 12.5 g for planning and weigh delivered units. Supplied horn hole position, link articulation and actual wire exits must be checked. | Manufacturer 1 Manufacturer 2 |
| 2 mains +1 steerable nose | E-flite 15–25 tricycle retract kit | EFLG230. main units = 2 × EFLG20190; nose unit = 1 × EFLG21190; included = Wire struts, adjustable axles, collars, sliding nose steering arm, wrenches and three-into-one retract harness; input V = 4.8, 7.4; max operating A each = 0.2; mass g main each = 39.5; mass g nose = 48; mount grid mm = 23, 27.5; main fastener head = 100 degree countersunk; nose fastener head = button Pivot, coil envelope, axle bore/usable length, steering-slot sweep and cut lengths are not fully dimensioned by the reviewed sources. Manufacturer 1.8–3.2 kg airplane range does not qualify printed mounts. | Manufacturer 1 Manufacturer 2 |
| 2 | Super Lite main wheels | DU-BRO 225SL. diameter mm = 57.15; width mm = 19.8; mass g each = 10; bore in = 0.15625; bore mm exact inch conversion = 3.96875 EFLG204 axle diameter was not published in the reviewed official sources. Do not assume 3.5 mm strut means 3.5 mm axle. Verify before purchase/reaming/fairing release. | Manufacturer 1 |
| 1 installed, 1 spare | Super Lite nose wheel | DU-BRO 175SL. diameter mm = 44.45; width mm = 17.5; mass g each = 4.4; bore in = 0.125; bore mm exact inch conversion = 3.175 Actual nose axle, collars and steering clearance still require measurement. | Manufacturer 1 |
| 11 | 2-56 swivel ball links with screw, shim and nut | DU-BRO 367. allocation = 10 for both ends of five surface rods; 1 for steering servo end; mass g each = 2; rod thread = 2-56 Need actual ball-center height, socket length, swivel envelope and servo/control-horn clearance before cutting rods or revising horn holes. Do not mix M2 and 2-56 threads. | Manufacturer 1 |
| 1 steering clevis, 1 spare | 2-56 Spring Steel Kwik-Link clevis with link guard | DU-BRO 109. thread = 2-56; mass g each = 1 Verify pin diameter and jaw width fit E-flite sliding arm. Preserve the factory sliding function; a rigid substitute can bind when retracted. | Manufacturer 1 |
| 6 cut rods | 305 mm fully threaded 2-56 stainless rods | DU-BRO 378. stock length mm = 305; thread = 2-56 Cut lengths are NOT the current viewer ball-center lengths. Establish after neutral horns, exact ball-link centers, thread engagement and full travel are measured. Long rudder rods also require buckling/free-play checks. | Manufacturer 1 |
| 1 | 3S 2200 mAh Smart G2 50C battery, IC3 | SPMX223S50. case mm = 119, 34, 21; mass g = 225; voltage nominal V = 11.1; capacity mAh = 2200; connector = IC3; leads = 12 AWG; normal charge A = 2.2 Horizon page currently offers stock; Spektrum page contains a conflicting availability phrase. Verify actual supply. Older my.spektrum page has an erroneous 4S1300 specification table and was rejected. Pack leads/padding/strap/CG space must be added to body dimensions. | Manufacturer 1 Manufacturer 2 |
| 2 | Purchased front and rear propellers | APC 9×6E / 9×6EP. diameter mm = 228.6; pitch in = 6 Confirm exact APC variants, hub/adapter engagement and front/rear thrust direction. SunnySky APC9060 test data are not a guarantee for the installed push-pull pair. No printed propeller selected. | Manufacturer 1 |
| 6 | 8 mm restraint straps | Two for receiver, two over the paired ESCs and two for UBEC. Three insulating pad locations,1 mm nominal. |
Workshop equipment
Caliper, gram scale, straightedge/square, suitable hand tools and the printer/material setup listed in the print guide. Powered models also need an appropriate battery charger, voltage/current measurement and radio setup tools. Use matched material bond coupons before structural adhesive assembly.
Installation details
See the current build guide’s interface table for hole patterns, fastener stacks, retention and channel assignments. Retained source cut lists and mechanical inventory remain necessary for the complete structure.