BattleTechWiki:Project BattleMechs/Sandbox

3025 thunderbolt.jpg
Production information
Manufacturer Earthwerks Incorporated,
Olivetti Weaponry,
Taurus Territorial Industries
Introduced 2491[1][2][3]
Model TDR-5S
Class Heavy
Cost 5,413,760 C-bills
BV (1.0) 1,015
BV (2.0) 1,335[3]
Technical specifications
Mass 65 tons
Chassis Earthwerk TDR
Armor Ryerson 150
Engine Magna 260
Speed 64.8 km/h
Jump Jets None
TDR-5S (C)


The Thunderbolt started production in 2491[1][2][3][4] as an assault 'Mech. Since that time the 'Mech's classification may have changed but it is still feared and respected by many. With the Thunderbolts varied arsenal it is capable of serving in many roles. As is common for 'Mechs of its size in the era it was produced, the Thunderbolt has a maximum ground speed of 64.8 kph and does not have any jump capabilities. For protection, the Thunderbolt also carries thirteen tons of armor. The Thunderbolt is noted for featuring an exceptionally roomy cockpit, compared to that of the Atlas or BattleMaster.[5]


Because of its eclectic weapons mix, the Thunderbolt does not have just one primary weapon. Its longest-range weapon is a Delta Dart LRM-15 missile launcher. Next in its long range arsenal is a Sunglow Type 2 Large Laser, which provides the Thunderbolt with respectable medium to long-range firepower. As ranges close, the Thunderbolt is able to bring its three Diverse Optics Type 18 Medium Lasers and a Bical SRM-2 missile launcher into play. Finally, for anti-infantry use, the Thunderbolt has two Voelkers 200 Machine Guns.


This was the original Thunderbolt design produced in 2491 built with Primitive Technology. The engine, armor, and cockpit were all early generation systems, less effective than later technology. As a result the original Thunderbolt had a top speed of 54 km/h and had to devote more weight to armor. Given its designed role as an assault 'Mech, this slow speed wasn't seen as a problem. Interestingly the weapons mix was the same as on the later TDR-5S that would appear on Succession Wars battlefields.[4]
This variant of the Thunderbolt uses Star League technology. An Endo Steel chassis provides more space for an updated weapon mix. The LRM launcher receives an Artemis IV fire control system while the SRM is replaced by a Streak SRM-2 launcher. Missile ammunition is protected by CASE. The Large Laser is replaced by an ER PPC, and a pair of Small Pulse Lasers replaces the Machine Guns. The Medium Lasers remain in place, but a Small Laser is added to the head. Fourteen double heat sinks keep the MechWarrior comfortable. BV (2.0) = 1,618[6]
This Federated Suns refit of the Thunderbolt removes the LRM-15, Machine Guns and their ammunition and replaces them with an Ultra AC/5 with two tons of ammunition. For close in work an extra Medium Laser is added and the Large Laser is traded for a Large Pulse Laser. How many of these variants survived past the Star League Era is unknown.[7]
The 5SE variant of the Thunderbolt is modified for mobility. The 'Mech has had its SRM-2 launcher and the Machine Guns removed and the LRM-15 has been downgraded to an LRM-10 in order to add four jump jets, giving the 'Mech a jumping distance of one hundred and twenty meters. The 'Mech has also had two heat sinks added to help dissipate its heat load better. BV (1.0) = 1,180, BV (2.0) = 1,414[8]
The 5SS Thunderbolt is a 'Mech that depends more on direct long-range fire instead of missiles. The 'Mech carries a PPC as its primary weapon and for close ranges carries three Medium Lasers and a SRM-6. Finally, for anti infantry use, the 'Mech carries a Flamer. To help with the 'Mechs added heat load, the 5SS variant has twenty one heat sinks. BV (1.0) = 1,077, BV (2.0) = 1,337[8]
TDR-5S (C)
A Clan technology retrofit of the original TDR-5S Thunderbolt, the Thunderbolt C replaces only the original weaponry - all structural components are unaltered. The standard weapon systems have been replaced with a Clan Large Pulse Laser, a single torso-mounted ER Large Laser, and arm mounted ER Medium Laser and two ER Small Lasers.[9] BV (2.0) = 1,593[10]
Upgraded with Star League technology, the 7M has been re armored using Ferro-Fibrous armor, reducing the weight of the armor to eleven and a half tons. The saved weight has allowed the 'Mechs arsenal to be upgraded as well. With an arsenal based on the 5S model, the 7M carries an LRM-15 missile launcher, an ER Large Laser, three Medium Lasers, a Streak SRM-2 launcher, and a pair of Machine Guns. Additionally, the heat sinks have been upgraded to double heat sinks and CASE has been added to protect against ammunition explosion. BV (1.0) = 1,338, BV (2.0) = 1,495[11]
  • TDR-7SE - The 7SE takes the upgrade of the Thunderbolt even further. The structure has been redesigned to use an Endo Steel structure. The 'Mech also uses Ferro-Fibrous armor and double heat sinks to further save weight. The saved weight has been used to focus the role of the 7SE into a long range 'Mech. The 'Mechs maneuverability has been enhanced with a jumping distance of one hundred and twenty meters. The Thunderbolts weapons have been completely overhauled. The primary weapon is a Gauss Rifle. This is backed up by three Medium Pulse Lasers in the torso with a fourth mounted on the left arm and, finally, the 7SE carries a Guardian ECM Suite to protect against advanced enemy electronics. BV (1.0) = 1,737, BV (2.0) = 1,809[12]
  • TDR-9M - The 9M carries the 7SE to its next logical step. The Thunderbolt has been further modified to make it excel at long-range combat. The 'Mech is built using an Endo Steel chassis and has twelve and a half tons of armor. The 'Mech has excellent maneuverability with a jumping distance of one hundred and twenty meters. The 'Mechs primary weapon is a Light Gauss Rifle. This is supported for long-range combat with an LRM-15 launcher. Finally, for close combat situations, the 9M carries three ER Medium Lasers. BV (1.0) = 1,500, BV (2.0) = 1,648[13]
  • TDR-9NAIS - Using some of the newest technology available in the Federated Suns, the 9NAIS is built on an Endo Steel structure and utilizes an XL Engine for power, giving it a ground speed of 86.4 kph. The 'Mech is armored with twelve tons of armor for protection and has an entirely updated weapons payload. The primary weapon is a Rotary Autocannon/5 which can fire at six times the normal rate of fire. Supporting it are three ER Medium Lasers and a Streak SRM-6. The Lasers and Rotary Autocannon are linked to an advanced Targeting Computer. Finally, for added protection against enemy electronics, the 'Mech has a Guardian ECM Suite. BV (1.0) = 1,637. BV (2.0) = 1,864[15]
  • TDR-9S - Based on the older 5SS model, the 9S is built with off the shelf structural components and armor. The 'Mech is armed with an ER PPC for its primary long-range firepower. This is supported at closer ranges by an SRM-6 launcher and three Medium Lasers. Finally, the Mech carries an Anti-Missile System for missile protection and two Machine Guns and a pair of Flamers for anti-infantry use. BV (1.0) = 1,244, BV (2.0) = 1,494[16]
  • TDR-9SE - The 9SE variant of the Thunderbolt is based primarily around an energy weapons arsenal and maneuverability. The 'Mech is armed with an LRM-10 missile launcher for long-range combat. For close to medium ranges, the 'Mech carries a Large Pulse Laser and three Medium Lasers. The additional mobility of the 9SE comes from its four jump jets giving it a jumping distance of one hundred and twenty meters. BV (1.0) = 1,355, BV (2.0) = 1,439[17]
  • TDR-9T - This variant uses an XL Engine to push its top speed to 96km/h. It uses an LRM-10, a pair of Light PPCs and three ER Medium Lasers. An Endo Steel skeleton provides the weight savings needed to install these weapons and engine. BV (2.0) = 1,589[18]
  • TDR-10M - This variant uses an Endo Steel chassis and maximizes the amount of armor protection available. It relies on various PPC's for its main weaponry, mounting a Heavy PPC, Light PPC, and Snub-Nose PPC on the same chassis. The LRM and SRM systems have been replaced by a single MML-5, and an ER Medium Laser completes the weapons loadout. A Light Fusion Engine allows the 10M to reach a top speed of 64 km/h, and four jump jets allow this T-Bolt to move through tight terrain. BV (2.0) = 1,727[19]
  • TDR-10SE - One of the newest variants of the Thunderbolt, the 10SE is built around new technologies. The 'Mech has an Endo Steel chassis and is armored with twelve and a half tons of armor. The 'Mech has superior maneuverability with MASC making it capable of bursts of speed up to 86.4 kph and has a jumping capability of one hundred twenty meters. Finally, the 'Mech's arsenal includes an ER PPC and three ER Medium Lasers which are linked to a Targeting Computer and an LRM-10 launcher. The 'Mech uses a Guardian ECM suite to help defend against advanced enemy targeting and communications systems. BV (1.0) = 1,630, BV (2.0) = 2,008[20]
  • TDR-11SE - A new variant of the Thunderbolt, the 11SE uses some of the newest technologies available in the Inner Sphere thanks to the modern Earthwerks facilities on Keystone. The 'Mech is armed with a new Ceres Arms Thrasher Snub-Nose PPC that is excellent for close range combat with a short range of two hundred and seventy meters and has an effective range out to four hundred and fifty meters. The 'Mech also has a Doombud MML-7 launcher which is capable of firing both LRM and SRM ammunition. For close combat, the 11SE has three Diverse Optics ER Medium Lasers. This variant has added mobility by adding improved jump jets that allow it to jump up to one hundred and eighty meters. The lasers and PPCs are linked to an advanced Targeting Computer and the 'Mech has a Guardian ECM Suite to defend it against enemy electronic warfare systems[21]. BV (2.0) = 1,754[22]

Custom Variants[edit]

  • TDR-5S-T Thunderbolt Tallman - The personal ‘Mech of Bremond DMM commander Leftenant-General Mary Tallman during the DCMS's Third Succession War invasion of Galtor III, only the large laser remains, with the rest of the standard weaponry replaced with a brace of four medium lasers in each side torso. The remaining weight and space is devoted to eight additional heat sinks. BV (2.0) = 1,447[25]
  • TDR-10M Thunderbolt Ilyena - Used by the lance commander of Lamenkov's Liability, this Thunderbolt removes the Snub-Nose PPC of the original TDR-10M and replaces it with a C3 Master computer and an additional Light PPC in the left torso. In every other respect, it is a standard TDR-10M. BV (2.0) = 1,616[26]
  • TDR-10M Thunderbolt Tsakalotos - This custom Thunderbolt refitted by Salazar Tsakalotos uses the standard TDR-10M as a base. Equipped with Stealth Armor and a Guardian ECM, it's much harder to hit than a standard Thunderbolt. The weapons have also changed: A Plasma Rifle replaces the Heavy PPC, and to cover the 'Mech's rear an experimental Small Variable Speed Pulse Laser is mounted in the head. For anti-infantry work the Mech carries a Flamer in the right torso. A Medium Pulse Laser is also fitted in place of the ER Medium model used in standard Thunderbolts, and it keeps the Snub-Nose PPC, Light PPC, and MML-5 of the original TDR-10M. To make room for this equipment, the 'Mech's jumping range is reduced to 90 meters. BV (2.0) = 1,856[27]



  1. 1.0 1.1 Era Digest: Age of War, p. 11 and p. 22
  2. 2.0 2.1 Technical Readout: 3025, p. 90
  3. 3.0 3.1 3.2 Technical Readout: 3039, p. 295
  4. 4.0 4.1 Experimental Technical Readout: Primitives, Volume 3, p. 7
  5. A Guy Walks Into a Bar on Solaris VII...
  6. Record Sheets: Operation Klondike, p. 45
  7. Era Report: 2750, p. 129
  8. 8.0 8.1 Master Unit List: Battle Values, p. 158
  9. The Battle for Twycross, p. 48-49
  10. Record Sheets: 3085 Unabridged — Project Phoenix, p. 148
  11. Record Sheets: 3085 Unabridged — Project Phoenix, p. 134
  12. Record Sheets: 3085 Unabridged — Project Phoenix, p. 135
  13. Record Sheets: 3085 Unabridged — Project Phoenix, p. 136
  14. Record Sheets: 3085 Unabridged — Project Phoenix, p. 138
  15. Record Sheets: 3085 Unabridged — Project Phoenix, p. 137
  16. Record Sheets: 3085 Unabridged — Project Phoenix, p. 139
  17. Record Sheets: 3085 Unabridged — Project Phoenix, p. 140
  18. Record Sheets: 3085 Unabridged — Project Phoenix, p. 142
  19. Technical Readout: 3085, p. 255
  20. Record Sheets: 3085 Unabridged — Project Phoenix, p. 143
  21. Tinker, Sprinter and "Angry"
  22. Record Sheets: 3085 Unabridged — Project Phoenix, p. 144
  23. Record Sheets: 3085 Unabridged — Project Phoenix, p. 145
  24. Record Sheets: 3085 Unabridged — Project Phoenix, p. 147
  25. Historical Turning Points: Galtor, p. 20
  26. BattleTech Dossiers: Lamenkov's Liability, p. 18
  27. BattleTech Dossiers: Salazar Tsakalotos, p. 6