Darko QuickMount & Voltra Mounts Doubler Plate Installation Instructions
Shared install path for the Darko QuickMount Doubler Plate and the Voltra Mounts Doubler Plate
Thank you for choosing Voltra Mounts. These instructions cover installing either the Darko QuickMount Doubler Plate or the Voltra Mounts Doubler Plate under a Beyond Power DIY Dock on the matching host mount. Both plates use the same fastener path: 8× M4 × 0.7 × 35 mm socket-head cap screws (class 10.9 or greater) with lock/split and flat washers, threading into the DIY Dock. Following these steps keeps the plate flat, the clamp load even, and the assembly secure for your VOLTRA unit.
Which Doubler Plate
Use the plate that matches your host mount. Both follow the same install steps in this article.
Required Tools & Hardware
| Tool / Item | Description / Notes |
|---|---|
| Host mount | Darko QuickMount or the Voltra Mounts mount that matches your Doubler Plate variant |
| Doubler Plate | Darko QuickMount Doubler Plate or Voltra Mounts Doubler Plate (use the plate that matches your host mount) |
| Beyond Power DIY Dock | Threaded dock — M4 screws thread into the dock |
| M4 × 0.7 × 35 mm socket-head cap screws (×8) | Class 10.9 or greater — same kit pattern as Omni; thread into DIY Dock |
| Lock / split washers (×8) | Included with kit — one per screw |
| Flat washers (×8) | Included with kit — one per screw |
| 3 mm hex key (Allen wrench) | For M4 socket-head cap screws |
| Torque screwdriver or low-range torque wrench | Capable of accurate 2.0–2.5 Nm (17.7–22.1 in-lb) readings |
| Non-marring prying tool | For lifting the adhesive Dock Magnetic Cover Plate without scarring the mount |
| Isopropyl alcohol (or mild adhesive remover) + soft cloth | Clean adhesive residue after pad removal |
| Clean cloth | Wipe mating faces before assembly |
| Soft work surface | Protects powder coat finish |
Critical Installation Specifications
Stack: Doubler Plate mounts under the DIY Dock on the host mount face. M4 screws pass through the aligned holes and thread into the DIY Dock.
Screw specification: 8× M4 × 0.7 × 35 mm socket-head cap screws, class 10.9 or greater, into DIY Dock threads, with lock/split washer + flat washer per screw — no nuts
Washer order (each screw): screw head → lock/split washer → flat washer → through plate / mount stack → into DIY Dock threads.
Torque source: Beyond Power DIY Dock recommended torque — 2.0–2.5 Nm (17.7–22.1 in-lb). Do not exceed 2.5 Nm (22.1 in-lb).
Torque method: Hand-start all screws, verify flat mating, then tighten in progressive stages with an even star / criss-cross pattern. Do not jump straight to final torque.
| Condition | Final Torque | Notes |
|---|---|---|
| Final M4 torque (DIY Dock) | 2.0–2.5 Nm (17.7–22.1 in-lb) | Beyond Power DIY Dock published range — stay in this band |
Progressive Torque Sequence
| Stage | Target | Action |
|---|---|---|
| Stage 1 | Snug / finger-tight | Bring all M4 screws to light contact in star / criss-cross pattern |
| Stage 2 | ~50% (~1.0–1.25 Nm / ~8.9–11.1 in-lb) | Increase evenly in the same pattern |
| Stage 3 (Final) | 2.0–2.5 Nm (17.7–22.1 in-lb) | Final torque in the same pattern, then one verification pass |
Step-by-Step Installation Procedure
Step 1 — Prepare the Host Mount
Place your Darko QuickMount or matching Voltra Mounts host mount on a soft, protected work surface. Confirm you have the Doubler Plate variant that matches that mount (Darko plate for Darko QuickMount; Voltra Mounts plate for the Voltra Mounts host). Lay out the DIY Dock and the kit hardware (eight socket-head cap screws with washers).
Step 2 — Remove the DIY Dock (If Already Installed)
If a DIY Dock is already installed on the host mount:
- Support the DIY Dock so it cannot drop when the last screw is removed.
- Remove the existing M4 screws that secure the DIY Dock to the mount.
- Set the DIY Dock aside for reinstallation with the Doubler Plate.
Required: When the DIY Dock comes off, the Beyond Power Dock Magnetic Cover Plate (the adhesive magnetic pad on the mounting face) must also be removed before the Doubler Plate can sit flat.
Step 3 — Remove the Dock Magnetic Cover Plate
If the Dock Magnetic Cover Plate is attached with adhesive: starting at one edge, insert a non-marring prying tool and gently pry upward while applying steady force to separate the adhesive bond. Work progressively around the perimeter and across the pad until it is fully removed.
Note: The cover plate is pliable plastic with magnets on the reverse side. Minor flexing during removal is normal. Set it aside for reinstallation after the Doubler Plate and DIY Dock are installed.
Step 4 — Clean Adhesive Residue
Remove any remaining adhesive from the host mount’s DIY Dock mounting face using isopropyl alcohol and a soft cloth, or a mild adhesive remover. Ensure the surface is completely clean and dry before positioning the Doubler Plate. A clean, flat face is required for proper mating.
Step 5 — Clean Mating Surfaces
Wipe the host mount’s DIY Dock mounting face, both faces of the Doubler Plate, and the DIY Dock mating face with a clean cloth. Remove chips, grit, chalk, or packaging residue so the plate can seat flat.
Step 6 — Position the Doubler Plate Under the DIY Dock
Place the Doubler Plate on the host mount so all fastener holes line up cleanly with the mount’s DIY Dock pattern. Set the DIY Dock on top of the Doubler Plate so the dock’s threaded holes align through the full stack (host mount → Doubler Plate → DIY Dock).
Alignment check: Confirm the plate sits flat against the mount with no rock or gap before installing fasteners.
⚠️ STOP: If the plate rocks, wobbles, or leaves a gap, stop and resolve it before proceeding. Do not torque fasteners over a non-flat fit.
Step 7 — Loosely Install All Eight M4 Screws (with Washers) into the DIY Dock
Build each fastener in washer order: screw head → lock/split washer → flat washer → through the plate / mount stack → into DIY Dock threads. Hand-start every M4 × 0.7 × 35 mm socket-head cap screw 2–3 turns. Do not force them. If a screw binds, back it out, inspect and clean the threads, replace any suspect fastener, and realign.
Continue until all eight screws are started and only lightly snug. Do not final-torque yet.
Step 8 — Flat-Mating STOP (Re-check Before Torque)
With all screws only loose / lightly snug, re-check that the Doubler Plate is flush, square, and fully seated against the host mount, and that the DIY Dock is centered on the plate with no binding or uneven gap.
Step 9 — Progressive Final Torque
Follow the three-stage sequence above. Keep the same star / criss-cross pattern on every pass. Final torque every M4 screw to 2.0–2.5 Nm (17.7–22.1 in-lb). End with one extra verification pass at final torque.
Step 10 — Reinstall the Dock Magnetic Cover Plate
After the Doubler Plate and DIY Dock are installed and torqued, center the Dock Magnetic Cover Plate on the DIY Dock mounting face the same way it was originally positioned. The built-in magnets will hold the pad even if the original adhesive is gone.
Optional: For a more permanent hold, apply a thin layer of flexible adhesive, contact cement, or high-quality double-sided mounting tape to the back of the pad before seating it.
Step 11 — Final Inspection
- Every M4 screw is within 2.0–2.5 Nm (17.7–22.1 in-lb) and has not backed off.
- Each screw has lock/split + flat washer in the correct order and is fully engaged in DIY Dock threads.
- The Doubler Plate is fully seated, flush, and square with no rock against the host mount.
- The DIY Dock is centered on the plate and secure.
- No screw shows binding, damaged threads, or incomplete engagement.
- Powder coat and mating faces are free of burrs or debris trapped under the plate.
Step 12 — Optional Carabiner / 2:1 Note
Each Doubler Plate includes a 3/4 in carabiner hole for optional 2:1 or accessory setups. Use hardware rated for your training loads. Keep cable / strap routing clear of sharp edges and moving parts; follow your attachment hardware’s own guidance. This article does not prescribe a specific cable path.
Maintenance Recommendations
- Re-check torque on the eight M4 × 0.7 × 35 mm DIY Dock screws (2.0–2.5 Nm / 17.7–22.1 in-lb) after the first few training sessions, then about every 90 days (or sooner if you train hard / under heavy dynamic loads).
- Keep the Doubler Plate, host mount, and DIY Dock mating surfaces clean. Wipe away chalk, sweat, and grit that can affect flat seating.
- About every 90 days, inspect the Doubler Plate, host mount, DIY Dock, and fasteners for wear, coating damage at contact points, or fastener loosening.
- If you remove and reinstall screws, inspect DIY Dock threads again, replace any fastener that looks suspect (replacement hardware was included with purchase; contact Voltra Mounts through your order or website if you need more), and re-torque using the progressive sequence — never jump straight to final torque. Optional carabiner / 2:1 hardware should be checked for wear on the same schedule.