LightRail 3.5 9 RPM Light Rail Complete kit

The LightRail 3.5 Intelli-Drive is a self-propelled linear lamp mover designed for rectangular grow rooms. It runs on a standard 6-foot track with no pulleys, chains, or gears, and the included adjustable switch stops let you dial in exactly how far the lamp travels. Rated to 35 lbs, the complete kit includes the motor, track, and stops — ready to mount and run with any reflector.

LightRail 3.5 Specifications

The LightRail 3.5 Intelli-Drive (9 RPM) ships as a complete kit. Key specifications derived from the manufacturer description are listed below.

Specification	Value
Model	LightRail 3.5 Intelli-Drive
Motor Speed	9 RPM
Weight Capacity	35 lbs
Track Length (standard)	6 feet
Track Extendable	Yes
Drive Mechanism	Intelli-Drive (no pulleys, chains, or gears)
Lamp Travel	Adjustable via switch stops
Reflector Compatibility	All reflectors
Kit Contents	Motor unit, 6 ft track, adjustable switch stops

Why Choose the LightRail 3.5 9 RPM

The LightRail 3.5 Intelli-Drive is a direct-drive lamp mover — it eliminates the mechanical failure points common to pulley, chain, and gear systems. The motor travels along the track under its own power, carrying the lamp with it. There are no belts to slip, no chains to stretch, and no gears to strip.

The included adjustable switch stops are a practical feature for growers who don’t have a perfectly sized garden. You set the stops to limit travel to whatever length actually covers your canopy. Whether you’re working with a small 2×4 tent or a larger rectangular room, you don’t have to match the lamp’s full 6-foot travel range to your grow space — the stops let you use exactly as much or as little of the track as needed.

The standard 6-foot track can be extended with additional track sections, which means the same drive motor works in a starter garden today and a larger build-out later. The 3.5 model handles fixtures up to 35 lbs, covering most HID reflectors and single-ended HPS configurations. Growers running heavier double-ended fixtures would step up to the LightRail 5.0 (rated to 100 lbs), but for the majority of single-ended setups, the 3.5 is the correct choice.

• No pulleys, chains, or gears — Intelli-Drive motor travels directly on the track, reducing maintenance and mechanical failure points.
• Adjustable switch stops included — lamp travel length is fully configurable; covers any garden length up to the full 6-foot track span.
• 35 lb weight capacity — supports most single-ended HID reflectors and lamp combinations.
• Extendable track — the standard 6-foot section can be lengthened with add-on track for larger grow rooms.
• Works with all reflectors — no proprietary mounting hardware required; compatible with standard reflector hangers.

Best Uses for the LightRail 3.5

A linear lamp mover like the LightRail 3.5 is well-suited to rectangular grow spaces where a single lamp needs to cover more canopy than its static footprint allows. Moving the light source across the canopy produces more even photon distribution and reduces hot spots directly under the lamp.

• Rectangular grow tents and rooms — the linear track format is designed for rectangular footprints; the lamp sweeps the length of the space on each pass.
• Single-ended HPS and MH setups — HID fixtures in the 35 lb and under range mount directly to the drive motor carriage.
• Start-up gardens scaling up — the adjustable switch stops let a small garden use only part of the track, and the extendable design accommodates future expansion without replacing the drive motor.
• Growers replacing fixed-position single-lamp setups — a lamp mover extends the effective coverage area of a single fixture, potentially reducing the number of lights required to cover a given canopy.
• Rooms with a single reflector pairing — if you’re using a T5 or HID fixture over a linear bed, a rail mover like the 3.5 is a direct-fit solution for improving canopy coverage without adding a second light.

LightRail 3.5 vs LightRail 5.0

Light Rail publishes two linear lamp mover models in the same Intelli-Drive family. The primary difference is weight capacity. The LightRail 3.5 is rated to 35 lbs; the LightRail 5.0 is rated to 100 lbs. Both use the same direct-drive mechanism with no pulleys, chains, or gears.

For most growers running single-ended HPS, ceramic HPS, or CMH fixtures in standard reflectors, the 3.5 is sufficient — typical single-ended reflector and lamp combos fall well under 35 lbs. The 5.0 is designed for double-ended HPS setups and other heavy-duty configurations where the combined weight of reflector, lamp, and ballast (if ballast is integrated) approaches or exceeds 35 lbs.

If you are unsure which model fits your fixture, weigh the reflector, lamp, and any attached hardware together before ordering. The 9 RPM motor speed on this 3.5 model is a fixed speed; if you need a different travel rate, check the Light Rail product line for variable-speed options.

Compatibility

The LightRail 3.5 Intelli-Drive is compatible with all reflector styles — no proprietary mount or adapter is required. The drive motor carriage accepts standard lamp-hanging hardware. The 35 lb weight rating covers the large majority of single-ended HID reflectors on the market.

The 6-foot aluminum track mounts overhead using standard mounting hardware (hooks or chain into ceiling joists or tent frame cross bars). It is extendable: additional track sections can be added end-to-end to increase the lamp travel range for longer rectangular rooms. The switch stops that limit lamp travel are included in the kit and are repositionable along the track, so you can adjust the travel length at any time without tools beyond what is needed for initial mounting.

The LightRail 3.5 is an independent moving system and does not require a specific controller or timer — the motor plugs into a standard outlet. It can be used alongside environmental controllers and timers that manage the attached lamp separately. For growers building out a full lighting system, the 3.5 pairs with high-output LED fixtures or traditional HID setups, provided the fixture weight stays under 35 lbs.

Usage Guidelines

The LightRail 3.5 is designed to move a lamp back and forth along a linear path over the canopy. Coverage area depends on the travel length you set and the canopy width the lamp can reach at its mounted height. A few practical points from the manufacturer description:

• Rectangular areas only — linear lamp movers are suited to rectangular growing beds. For square or irregular canopy shapes, multiple fixed-position lamps or a 2D mover may be more appropriate.
• Travel length — set the switch stops to match the length of your canopy, not the full 6-foot track, unless your canopy fills that span. Lamp travel that exceeds the canopy wastes cycle time at the ends of the track.
• Mount height — maintain the lamp at the manufacturer-recommended height for your fixture type. Moving the lamp does not change the recommended distance between the lamp and the canopy; it changes the horizontal distribution of that light over time.
• Extendable track — if your canopy is longer than 6 feet, add a track extension section before setting the switch stops. Do not attempt to use the system with a lamp travel range beyond what the track supports.
• Weight check — verify that your reflector and lamp combination weighs 35 lbs or less before hanging. Exceeding the rated capacity can damage the motor carriage.

How to Install the LightRail 3.5

Installation follows a straightforward sequence based on the manufacturer description. The kit includes the motor/drive unit, the 6-foot track, and the adjustable switch stops.

1. Plan the track position. Identify a mounting location centered over your grow area along the long axis of the rectangular space. The track runs the length you want the lamp to travel, so position it directly above and parallel to the canopy.
2. Mount the track. Secure the 6-foot track overhead using appropriate hardware for your ceiling or tent cross-bar. The track should be level and at a height that, combined with your lamp’s hanging distance, puts the lamp at the correct position above the canopy.
3. Place the drive motor on the track. Slide the Intelli-Drive motor carriage onto the track. It is self-propelled and does not require any pulley, chain, or gear assembly.
4. Attach the lamp and reflector. Hang your reflector and lamp from the motor carriage using the same hardware (chain or ratchet hangers) you would use for a fixed-position mount. Confirm the combined weight is 35 lbs or less.
5. Set the switch stops. Position the adjustable switch stops at each end of the travel range you want. The motor will reverse direction when it contacts a stop. Set them to match the edges of your canopy.
6. Plug in and test. Connect the motor to a standard outlet. Watch the lamp travel through at least one full back-and-forth cycle to confirm the switch stops are placed correctly and the lamp clears any obstructions at both ends of travel.
7. Adjust as needed. Reposition switch stops or adjust the lamp height until the coverage pattern matches your canopy. If you need a longer travel range than 6 feet, add a track extension before finalizing stop placement.

If you are setting up a complete grow room and need additional grow tent systems or compatible lighting accessories, the LightRail 3.5 can be integrated into most standard indoor garden configurations.

Sources & Further Reading