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RGM-86 GM III Mass Production Mobile Suit (RGM-86B, -86J)

I. Dimensions:

Total Height:  18.6 meters 18.6 meters
Total Depth : 5.3 meters 5.3 meters
Total Breadth : 7.5 meters 7.6 meters
Dry Weight : 19.3 metric tons 21.1 metric tons
Operational Weight : 37.3 metric tons 39.9 metric tons

II. Type

III. Service Use

IV. Propulsion





Fuel Capacity:

V. Performance

Running speed: 168 kph 177 kph
Max loiter time: 180 seconds 200 seconds
Jump distance:(*) 150 meters 180 meters
Cell duration:(**) 100 hours 100 hours
Acceleration: 2.2 G 2.1 G
Delta-v capacity: 118.6 kps 128.4 kps
* = Earth-normal conditions and without thrusters
** = Continuous operational use.

VI. Electronics

Radar tracking:

Optical tracking:

Tactical Electronic Warfare System (TEWS):

VII. Armament


Hand Held Weapon

Melee Weapon






Other Military Cargoes available include:

VIII. Armor

The armor on the RGM-86 is a low-mass lunarium tungsten composite plating that is the standard for most Terran mecha. Aside from the good protection provided against projectiles, missiles, and other kinetic weapons, this armor is also resistant to plasma globes (annihilation discs), lasers, and fair against, particle guns too, owing to the fact that the armor can flake off and evaporate in layers under fire from such high-energy weapons, taking much of the weapon's energy and converting it into the latent heat of sublimation in the armor. The armor stops all small arms fire, and has good resistance to all weapons commonly mounted on combat mecha.

The GM III provides full protection from nuclear, biological, and chemical hazards, using an overpressure cockpit environment activated by radiation and hazardous chemical sensors, or manually when biological warfare conditions are anticipated. The internal consumables supplies can provide atmosphere for three days maximum.

IX. Development

The RGM-86 began development almost simultaneously with the RGM-84.  However, with the cost of the movable frame being much higher than originally expected and the RDF being committed to both the Zeta Project and the completion of the Nemo, Anaheim developed the RGM-86 along more conventional lines.  The design used the original GM as a design base and made modifications to several key areas. First and foremost was thrusters, both location and output.  The RGM-86 featured a almost 50 percent more thrust and agility than the original GM thanks in part to backpack design first tested on the Gundam Mark II.  In addition the GM III utilized the now standard linear seat and panoramic cockpit system.  It also incorporated the newest fusion reactor system as well as the magnetic coating to make up for the lack of a movable frame.  However, even with all of its features, the GM III still came up short in overall agility being slower on the ground than the Nemo and having inferior jump abilities though having much the same limited flight characteristics.  In space the GM III was as agile as the Nemo, but on the whole, it was still inferior to the Nemo.  While not as agile as the Nemo or Zeta, it was still far beyond the original GM.   

To further reduce costs, the standard weapon systems were the exact same as the Nemo.  It utilized the same tachyon rifle and tachyon sabers as the Nemo in addition to the standard head mounted autocannons.  The GM III however did have more optional weapons than the Nemo did.  These new systems were missile launchers giving the GM III the ability to serve either in the close combat role, or be loaded with extra missiles similar to a FAST pack system and be used as a mobile fire support system similar to the SDR-series destroid.  

Entering service in 2055 as despite its detractors, it was proven a success in the Transient War in 2057 in which it often sat behind the front lines of Nemos and fired away with its missile launchers often a more mobile alternative to the SDR-14.  As such few of the units were lost in that war.  However, those that were lost were often the result of close combat, which is supposed to be the mobile suit's specialty, however the GM III often times proved to cumbersome to fight in hand to hand combat effectively, and while it could occasionally defeat male power armor, it was outclassed by the female power armor.  Following the war, the RGM-86 received and upgrade.  The RGM-86J Novel GM III as it became known had improved engines as well as the Nemo Plus' tachyon rifle and a more powerful tachyon saber.  It added a smaller, enclosed chest launcher which allowed the mobile suit to be more effective at close range combat, but could still use the same optional systems as the original GM III.  The RGM-86J served in the front lines with good service record and it was replaced in 2062 by the RGM-91 ReGZ which, while having less missiles was more effective in close combat. 

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Robotech (R) is the property of Harmony Gold. This document is in no way intended to infringe upon their rights.

Layout adapted from Robotech Reference Guide

Content by Jeffrey R. Spillner and Ron Ferrara
Copyright 1998-2001 Jeffrey R. Spillner, Ron Ferrara

Page Last Updated on February 22, 2001 @ 00:00 GMT