8088M1790-P
8089 N·s · 1786 N avgCesaroni Pro · class M · Skidmark · delay Plugged (no ejection charge) · built for the Pro98-4G case
702 mm long · 8.27 kg loaded · 4.71 kg propellant
Muster is a shopping aid, not an assembly guide. Build only to the reload's printed instructions — always the authority — and confirm every part with the manufacturer before you buy or fly.
What you need to fly it
The simplest build — in its own Pro98-4G case. Reusable hardware you buy once, plus the single-use reload.
Reusable hardware to own
- Pro98-4G case
98 mm reusable motor case
Sources: thrustcurve.org, apogeerockets.com
- 98 mm Pro forward closureP98-FC
Reusable; shared across every case length in this diameter
Source: sunward1.com
- 98 mm Pro rear closureP98-NH
Reusable; holds the reload's single-use nozzle
Sources: apogeerockets.com, sunward1.com
Single-use reload to buy
Single-use cartridge: preassembled grains, liner, nozzle, and forward closure — loads as one piece (no ejection charge)
Source: thrustcurve.org
- This reload is plugged — it carries no ejection charge and must be flown with electronic deployment (a timer or altimeter) and a plugged forward closure.
- Sparky (metal-loaded) propellant: many ranges restrict these for fire risk. Check your field's rules before flying.
- A little high-temperature grease on the closure threads and o-rings helps on assembly.
Cases that fly it
Its own case is the simplest; a longer case flies it too, with the adapter and spacers.
Also flies cross-brand (crossload)
Cesaroni supplies the o-rings to fly its Pro75/98 reloads in RMS hardware — but AeroTech recommends against it: an RMS case needs a forward seal disc and o-ring the Cesaroni reload doesn’t include (forward-end overheating risk), and AeroTech won’t warranty the combination.
A cross-brand motor must be certified in the hardware it’s flown in — treat this as a starting point and build to the reload’s printed instructions.
Sources: pro38.com, facebook.com