Rocket Kits & Combos
Rocket Motors & Propulsion
Rocket Parts & Subcomponents
Launch Equipment
Experimental Rocketry Equipment
Tools & Supplies
Services
Merchandise
J-509
Precision CNC-machined... loaded... burn — aerospace-grade hardware, every part sold as its own spare
How to use in OpenRocket: Motors & Configuration → Edit motors → Import → select the downloaded file. Run a full simulation before any real flight — the Rough Apogee Estimator below is only a simplified back-of-envelope figure.
Rough Apogee Estimator
A quick, simplified estimate — no substitute for real simulation software
About This Product
Motor J509 — Precision CNC Machined High-Performance Rocket Motor. A 54mm Class J reloadable motor built around a 4-grain BATES KNDX propellant charge, machined from aerospace-grade aluminium with a graphite nozzle and stainless steel retention hardware.
Delivering an average thrust of 509N over a 1.99 second burn, Motor J509 sits between the J-265 and J-710 in our J-class lineup, suited to mid-weight high-power builds where a fast, punchy boost phase is wanted. The reloadable case design means only the consumable parts (casting tube, liner, O-rings, circlip, fuel and oxidiser) need replacing between flights — the casing, nozzle, forward closure and retention ring are reused.
As with all Rocketeers amateur motors, every hardware component is also sold individually as a spare, and a dedicated reload kit bundles the consumables needed for each refill.
Performance & Dimensions
Full spec sheet
Component List
Hardware (dry) + Fuel/Oxidiser (propellant) = Total Wet Weight
| # | Component | Material | Qty | Weight (g) |
|---|---|---|---|---|
| 1 | Casing | Aerospace Grade Aluminium | 1 | 528 |
| 2 | Nozzle | Graphite | 1 | 144 |
| Total Dry Weight (Hardware) | 811 g | |||
| 3 | Fuel | Dextrose | ||
| Total Wet Weight (Hardware + Propellant) | 1695 g | |||
This Product Consists Of
Every part is its own listing
