Specifications
ManufacturerLOC Precision
Diameter2.63" (66.8mm)
Length48" (1219mm)
Motor Mount29mm
RecoveryDual Deploy
AltimeterEggtimer Quark
Cert Flight MotorAerotech H130W-14A
CertificationNAR Level 1 (2025)

Overview

The LOC IV ร—2 was my ticket to high-power rocketry. I chose LOC Precision because their kits are no-nonsense, heavy-duty, and well-documented. The IV ร—2 is a great platform โ€” big enough to be meaningful, small enough to be manageable on the pad and in the airframe.

Certification Flight

The L1 cert flight used an Aerotech H130W-14A White Lightning reload. Weather conditions were good, the pad was wired, and the Quark was armed. The ignition was clean โ€” that H motor makes a sound you don't forget. Boost was straight, apogee deployment was right on time, and the main came out at the programmed altitude. A beautiful flight.

๐Ÿš€ Flight Result

NAR Level 1 certified. Clean boost, perfect dual-deploy sequence, soft landing. One of those flights where everything just works.

Avionics

The Eggtimer Quark handles dual-deploy duties. It's a reliable, well-supported altimeter that's straightforward to wire and configure. The Quark manages drouge at apogee and main at a user-set altitude โ€” simple and effective.

Recovery System

Dual-deploy architecture with black powder charges. Drogue at apogee separates the rocket and deploys a streamer or small drogue. Main deployment at lower altitude releases the full-size main parachute for a gentle landing.

Future Plans

The LOC IV ร—2 already has a J350W waiting for it โ€” sims to approximately 3,900' (1,186m). That'll be an L2 cert flight when the time comes. Need to travel to an HPR-capable field for that one; SPAAR's home field is limited to G motors.