Excalibur (BattleMech)

This article is about the BattleMech. For the Dropship, see Excalibur (DropShip class).
Excalibur (BattleMech)
Production information
Manufacturer Yankee Weapons Systems[1]
Independence Weaponry[1]
Skobel MechWorks[1]
Production Year 2619[2]
Model EXC-B2
Class Heavy
Cost 16,075,087 C-bills
Technical specifications
'Mech type Inner Sphere BattleMech
Mass 70 tons
Chassis Corbine 1
Armor Pribak 9000 with CASE
Engine Ford 350 XL
Communications System Faulk 203 Comset
Targeting Tracking System KBC Starsight Model QTA1
Heat Sinks 11
Speed 86.4 km/h
BV (1.0) 1,361[3][4]
BV (2.0) 1,533[5]


The Excalibur is designed to engage an enemy at long range and use its mobility to dictate the ranges of the engagement. The 'Mech is named for the appearance of the muzzle and dummy hand on the right arm, which reminded the design team of the look of a medieval Terran sword. The EXC-B2 first saw service in 2620, and served with SLDF forces well in Operation Smother and the Amaris Civil War. However, the Excalibur has proven to be most potent when supported by other types of BattleMechs, primarily due to insufficient armor. Through the Succession Wars and Clan Invasion era, the Excalibur has become an exceptionally rare sight in the Inner Sphere, excluding those fielded by the Com Guards and the Word of Blake Militia. The Excalibur has had a bit of a revival due to Yankee Weapons Systems novel production of the 'Mech on New Earth in 3058.[6][7][8]

Weapons and Equipment[edit]

The 'Mech has an impressive top speed of 86.4 km/h, which is made possible through the use of a Ford 350 XL engine. The Excalibur carries a relatively light seven and a half tons of armor, with CASE in both side torsos to protect against an ammunition explosion. With its mission of long-range combat, the Excalibur does not need a very large amount of armor protection. The Excalibur dissipates its waste heat through the use of eleven heat sinks. For added protection against missile attacks, the Excalibur had a McArthur anti-missile system.

As its primary weapon, the Excalibur carries a powerful Grizzard Model 200 Gauss rifle that has an effective range of up to six hundred and sixty meters. This is backed up by an Ingrid Systems LRM-20 with an Artemis IV fire control computer for increased missile accuracy.


  • EXC-B1 
    This version was the basis for the EXC-B2 eventually adopted by the SLDF. The only difference is that it carries a single Strafe 44 Small Pulse Laser in place of the CASE systems. BV (2.0) = 1,549[9]
  • EXC-B2b 
    The B2b is very similar to the B2, except that the use of an Endo Steel structure allows for an additional three and a half tons of armor. This variant was utilized by the SLDF Royals.[10] BV (2.0) = 1,715[11][12]
  • EXC-B2b-EC 
    Created by Clan Wolf in the Golden Century, the SLDF weaponry was replaced by an Improved Gauss Rifle, Improved LRM-20 with Artemis IV, and a prototype ER medium laser. CASE was added to the anti-missile system, as well as four more tons of armor. Double heat sinks replaced the singles used by the SLDF. (Note: EC is an abbreviation used by historians to designate "Early Clan" designs.)[13] BV (2.0) = 2,008[14]
  • EXC-C1 
    The C1 configuration of the Excalibur increases its defensive combat capabilities. This was done by removing the anti-missile system from the 'Mech, as well as removing one of the heat sinks, though the remainder were upgraded to double heat sinks. The tonnage saved goes toward adding an additional medium laser and increasing the 'Mech's armor protection to nine tons. BV (1.0) = 1,456[15][16], BV (2.0) = 1,637[17]
  • EXC-CS 
    Following the fall of Terra in 3058, ComStar no longer had any factories, let alone ones that could produce the Excalibur. They solved the latter problem in mid-3067 by contracting with Independence Weaponry on Quentin to produce a variant that has been well-received in both the Com Guards and DCMS.[18] The CS removes the Gauss Rifle to make way for a Lord's Light 2 ER PPC and twelve double heat sinks. Four ER medium lasers and an ER Small Laser ensure that the Excalibur CS is a threat at close range, as well. Thirteen and a half tons of armor protect this variant better than any other configuration of the Excalibur. A Targeting Computer helps guide the direct-fire weapons. Finally, Triple Strength Myomer harnesses the heat buildup of the CS to make it faster. BV (1.0) = 1,553[19], BV (2.0) = 2,174[20]
  • EXC-D1 
    The variant is a radical reworking of the Excalibur by Word of Blake that was first reported to have been seen in 3067 on Outreach.[18] All the weapons are removed to make way for eleven and a half tons of armor and enough jump jets to vault the 'Mech up to one-hundred fifty meters at a time. A short-range arsenal is in place for the remaining tonnage, anchored by a rotary autocannon/5. It, along with two ER medium lasers, are made more accurate through an advanced Targeting Computer. A Streak SRM-6 enables highly-accurate missile fire. An Improved C3 CPU aids in targeting with the other five members of the Level II. BV (1.0) = 1,824[21], BV (2.0) = 1,949[22]

Custom Variants[edit]

  • EXC-C1 Excalibur Cernunnos 
    Mysterious Excalibur variant reportedly piloted by a former Clan Smoke Jaguar warrior of the Aerospace pilot genotype. This warrior has been code named by intelligence agencies as Cernunnos. This Clanner's mysterious 'Mech has been completely refitted with additional armor and revision of its principal weapons' layout. The Gauss Rifle has been replaced with a Star League tech ER PPC and fitted with an LB 20-X Autocannon and 3 tons of ammunition. The 'Mech is protected by 12 tons of armor with CASE protecting the ammunition. BV (1.0) = 1,420[23]

Design Quirks[edit]

The Excalibur has the following Design Quirks:[24]



  1. 1.0 1.1 1.2 Technical Readout 3058 Upgrade, p. 216
  2. MUL online entry and Technical Readout: 3058 Upgrade, p. 216 date the EXC-B1 Excalibur to "2619". However, RI, TRO3058, TRO3058U sites performance during the Reunification War. Perhaps another Excalibur variant will be published.
  3. Combat Operations, p. 106
  4. Record Sheets: 3058 Upgrades, p. 282
  5. Record Sheets: 3058 Unabridged (Clan & Star League), p. 245
  6. Rhonda's Irregulars, p. 30
  7. Technical Readout: 3058, p. 124
  8. Technical Readout: 3058 Upgrade, p. 216
  9. Record Sheets: 3058 Unabridged (Clan & Star League), p. 246
  10. Technical Readout: 3075, p. 169
  11. Record Sheets: 3075 Unabridged, p. 172
  12. Record Sheets: 3075 Unabridged - Age of War, p. 26
  13. Technical Readout: Golden Century, p. 62
  14. Technical Readout: Golden Century, p. 106
  15. Combat Operations, p. 123
  16. Record Sheets: 3058 Upgrades, p. 283
  17. Record Sheets: 3058 Unabridged (Clan & Star League), p. 247
  18. 18.0 18.1 Technical Readout: 3058 Upgrade, p. 216
  19. Record Sheets: 3058 Upgrades, p. 284
  20. Record Sheets: 3058 Unabridged (Clan & Star League), p. 248
  21. Record Sheets: 3058 Upgrades, p. 285
  22. Record Sheets: 3058 Unabridged (Clan & Star League), p. 249
  23. Record Sheets: Unique 'Mechs p. 10 - Excalibur Cernunnos - Custom Variant published by BattleCorps website.
  24. BattleMech Manual, p. 91 BattleMech Quirk Table - Excalibur Entry.