Bolt PC · parts and equipment
Current R5 mount revision
Simpler mounts and numbered assembly diagrams · Complete current build plates · Required hardware changes
Use R5 mount instructions instead of earlier split-mount diagrams. Other airframe assembly instructions remain applicable. Print and dry-fit the mounts first.
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Bench-build revision: geometry and assembly details updated; physical fit, structural and flight testing remain outstanding.
Quantities are installed unless marked as workshop/fixture. Confirm the exact version, availability and delivered hardware before buying. Earlier generic gear/axle and regulator proposals are superseded below.
| Quantity | Item | Specification | Source |
|---|---|---|---|
| 1 | Motor | Scorpion SII4020-420KV, original specified motor | Manufacturer / specification, Manufacturer / specification |
| 1 | ESC | Hobbywing Platinum 100A V3, model 30203900; Fixed Wing mode; BEC set to 6.0 V | Manufacturer / specification, Manufacturer / specification |
| 6 | Servos | Hitec D645MW: two ailerons, two flaps, one elevator and one rudder | Manufacturer / specification |
| 1 | Receiver | User AR631+ SPM-1031 with NX8 | Manufacturer / specification |
| 1 | Battery | SPMX56S1006S5000/IC5. Nominal 139 ×42 ×58 mm; verify padding, strap and lead clearance inside 165 ×55 ×60 reserve. | Manufacturer / specification |
| 1 | Purchased propeller | Purchased Master Airscrew 15 ×7 three-blade candidate and correct metal adapter/M8×1 nut; measure current on fully charged 6S. | Manufacturer / specification |
| 2 | Non-reversing Y leads | One for aileron pair and one for flap pair; mechanically orient servos for matching movement. | Manufacturer / specification |
| 4 | Wing extension leads | Planning lengths: two 450 mm and two 1000 mm. Route first and select actual lengths. | |
| 4 | Canopy magnets | Four 8 ×3 mm axial discs; two attracting pairs. | |
| 4 | Motor bolts | M4×0.7, metal washers; length from mount thickness plus verified motor engagement. | Manufacturer / specification |
| 24 | Servo fasteners | M2.5 through-bolts/nuts with supplied Hitec grommets and eyelets, four per servo. | Manufacturer / specification |
| 8 | Strut rod ends | igus EBRM-04 RH, M4×0.7; 4 mm ball bore, 5 mm ball width, 15 mm housing.8 mm chosen thread engagement; minimum 7 mm. | Manufacturer / specification |
| 8 | Rod-end studs | M4×30 steel studs; 8 mm in rod end, 3.2 mm jamnut, 15 mm printed base, captive M4 nut. Check bottoming. | |
| 8 | M4 jamnuts + captive nuts | Eight of each. Standard 3.2 mm nut thickness is the nominal cut-length calculation; measure actual hardware. | |
| 8 | Strut pivot bolts | M4×35 partly threaded with two washers and one locknut each. Unthreaded shank must span ball/spacers; verify real runout. | |
| 16 | Ball spacers | Metal 4.2 mm ID ×6 mm OD ×3.5 mm long. Seat on ball faces; never clamp housing. | |
| 4 | Wing fork fastener pairs | Each fork: M4×20 plus M3×20, washers and locknuts. PWC has 3 mm rib+3 mm backer; PC has 8 mm rib. | |
| 4 | Root fork fastener pairs | Each fork: M4×16 and M3×14, washers and locknuts in accessible inner pocket. | |
| 2 | Main wheel | DU-BRO500TL, 127×38.1 mm; enlarge axle bore concentrically to 6 mm, within maker’s 1/4-inch enlargement limit. | Manufacturer / specification |
| 2 | Main axle stock | igus SWM-06 steel shaft, cut 100 mm each. Confirm 6 mm shaft tolerance and actual collar fit before cutting. | Manufacturer / specification |
| 6 | Split shaft collars | Ruland MSP-6-F:6 mm bore, 16 mm OD, 9 mm width. Use supplied screws; manufacturer limit and retention test apply. | Manufacturer / specification |
| 6 | Axle shims | Metal washers, nominal 6.2 mm ID, 12 mm OD, 1 mm thick. Three per axle; measure real stack. | |
| 4 | R5 cabin cage bolt sets | M3×20, two M3 washers and one M3 locknut each. X578,Z±25, both sides; heads outboard. |
For unchanged carbon/wood members, retaining hardware, servo linkage lengths and materials, also use the source cut lists and drawings linked in the build guide. Fit all actual ends before marking rods; do not treat a viewer centerline as a bare rod cut length.