Editing Thunderbolt

{{Otheruses|the 65-ton BattleMech|other uses|Thunderbolt (disambiguation)}}
{{InfoBoxBattleMech
|image = Thunderbolt_TDR5S_SSW.jpg
|name = ''Thunderbolt''
|manufacturer = 
[[Blackstone BattleMechs Limited]]
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[[Earthwerks Incorporated]]<ref name = TRSWp124f>''Technical Readout: Succession Wars'', pp. 124–125: "TDR-5S Thunderbolt"</ref><ref name=TRCIp146f>''Technical Readout: Clan Invasion'', pp. 146–147: "TDR-9M Thunderbolt"</ref> <!-- 5S entry reprinted from TRO:3039, 9M entry from TRO:PP -->
----
[[Olivetti Weaponry]]
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[[Taurus Territorial Industries]]
----
[[Trellshire Heavy Industries]]
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[[Vandenberg Mechanized Industries]]
|model = TDR-5S<ref name = TRSWp124f />
|Tech Base = Inner Sphere
|mech type = BattleMech
|production year = 2491
|year reference = <ref name = ed>''Era Digest: Age of War'', p. 11 and p. 22</ref><ref name = TRO3025>''Technical Readout: 3025'', p. 90</ref><ref name = TRO3039>''Technical Readout: 3039'', p. 295</ref>
|cost = 5,413,760 C-Bills
|mass = 65
|feet = biped
|chassis = [[Earthwerks TDR]] <!-- <ref name = TRSWp124f /> -->
|armor = [[Ryerson 150]] <!-- <ref name = TRSWp124f /> -->
|engine = [[Magna 260]]<br/>[[Vlar 260]]<ref name=OR162>''Objective Raids'', p. 162</ref> <!-- <ref name = TRSWp124f /> -->
|comsys = [[Neil 8000]] <!-- <ref name = TRSWp124f /> -->
|T&T = [[RCA Instatrac Mark X]] <!-- <ref name = TRSWp124f /> -->
|heat sinks = 15 [[Heat Sink|single]] <!-- <ref name = TRSWp124f /> -->
|speed = 64 <!-- <ref name = TRSWp124f /> -->
|armament = <!-- <ref name = TRSWp124f /> -->
* 1x [[large laser]]
* 1x [[LRM-15]]
* 3x [[medium laser]]
* 1x [[SRM-2]]
* 2x [[machine gun]]
|BV (1.0) = 1,015
|BV (2.0) = 1,335<ref name = TRSWp124f /><ref name = TRO3039/><ref>''Record Sheets: 3039 Unabridged'', p. 479</ref>
}}

==Description==
The '''''Thunderbolt''''' started production in [[Introduction Year::2491]] as a planetary-assault 'Mech, and in fact was one of the heaviest 'Mechs that could be produced at that time. Since then the 'Mech, known affectionately as the ''T-Bolt'' or sometimes as the ''Thud'', has had its classification changed as larger 'Mechs were built. Thanks to periodic updates, it is still feared and respected by many. With its varied arsenal, the ''Thunderbolt'' remains one of the best-armed 'Mechs, making it capable of serving in many roles. It is also an incredibly well-armored 'Mech, rivaling or exceeding the amount of armor carried by some [[assault 'Mech]]s. One downside to the ''Thunderbolt'' armament is poor heat management.<ref name=TRO3025/><ref name=TRO3039/>  The ''Thunderbolt'' is also noted for featuring an exceptionally roomy cockpit, compared to that of the ''[[Atlas (BattleMech)|Atlas]]'' or ''[[BattleMaster]]''.<ref>''[[A Guy Walks Into a Bar on Solaris VII...]]''</ref>

The original TDR-1C ''Thunderbolt'' was the first BattleMech of [[Earthwerks Limited]], as produced from their new plant on [[Tikonov]]. Despite the [[Capellan Confederation|Confederation's]] relative inexperience with BattleMech technology, Earthwerks' ''Thunderbolt'' was impressive. The ''T-bolt'' set records in time between prototype and production, despite starting from scratch. The ''Thunderbolt''&#39;s formidable performance caught the attention of the [[Capellan Confederation|Confederation's]] neighbors and made Earthwerks a tremendous success.<ref name=prim3>''Experimental Technical Readout: Primitive Volume III, p. 7</ref> 

Within fifteen years,<ref>''[http://www.masterunitlist.info/Unit/Details/3238/thunderbolt-tdr-5s MUL online date for the TDR-5S ''Thunderbolt'']''</ref> Earthwerks expanded [[Anti-spinward|anti-spinward]] into the [[Free Worlds League]],<ref name=prim3/> choosing [[Keystone]] as the location to produce their upgraded TDR-5S. [[Olivetti Weaponry]] on [[Sudeten]] also picked up the design following their formation. During the [[Succession Wars (History)|Succession Wars]] this made [[House Steiner]] and [[House Marik]] the largest users of ''Thunderbolts'', although they were eager to sell the design to the other [[Successor States]]. Thus ''Thunderbolts'' remained a traditionally Capellan 'Mech too, at least until the [[Fourth Succession War]] and [[Andurien Wars]]. The [[Taurian Concordat]] was one of the largest users of the ''Thunderbolt'' in the [[Periphery]] thanks to both [[Vandenberg Mechanized Industries]] and [[Taurus Territorial Industries]] acquiring and producing the 'Mech from their factories on [[Pinard]] and [[Taurus]] respectively, with many being sold to [[Mercenary|mercenary]] bands.<ref name=TRO3025/><ref name=TRO3039/><ref name=TRO3050>''Technical Readout: 3050'', p. 160</ref>

Both Earthwerks and Olivetti introduced new ''Thunderbolt'' variants utilizing [[lostech]] just before the [[Clan Invasion]], while the Taurian factories continued to churn out older models.<ref name=TRO3050/>  When Sudeten was conquered by [[Clan Jade Falcon]], the Olivetti factory was lost to the [[Inner Sphere]], and, though using outdated technology by [[Clan]] standards, it was still producing ''Thunderbolts'' into [[3054]].<ref>''Objective Raids'', p. 60</ref>  Several years later, Earthwerks created an update to the aging ''Thunderbolt'' in the TDR-9M variant but ran into trouble with [[Irian BattleMechs Unlimited]].  Irian had just recently introduced the ''[[Tempest]]'' as their replacement for the ancient 'Mech and lobbied the [[LCCC|League Central Coordination and Command]] to put a stop to any new ''Thunderbolts''.  A legal fight was brewing up when the [[Word of Blake]] stepped in and negotiated a compromise: the two designs would fight each other in a combat trial, with the winning design used to supply the [[Word of Blake Militia|Blakist military]].  The TDR-9M won and starting in April [[3067]] the Word of Blake began receiving their shipments of new ''Thunderbolts'', followed shortly thereafter by the [[Free Worlds League Military]].<ref name=TROPP>''Technical Readout: Project Phoenix'', p. 32</ref>

==Weapons and Equipment==
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 mounted in the right torso fed by a two-ton reload bin in the center torso. Next in its long range arsenal is a [[Sunglow Type 2]] [[Large Laser]] mounted in the right arm (or ExoStar [[Large Laser]]<ref name=OR93>''Objective Raids'', p. 93</ref>), 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 laser]]s and a Bical [[SRM-2]] missile launcher (or Harvester [[SRM-2]]<ref name=OR159>''Objective Raids'', p. 159</ref>) into play. All three medium lasers are mounted in the left torso while the SRM launcher and one ton of reloads are mounted in the right.  Finally for anti-[[infantry]] work the ''Thunderbolt'' has two [[Voelkers 200]] [[Machine Gun]]s (or SperryBrowning [[Machine Gun]]s<ref name=OR159>''Objective Raids'', p. 159</ref>) with one ton of ammo in the left arm.<ref name=TRO3025/><ref name=TRO3039/>

While an impressive arsenal, the Achilles' heel of the ''Thunderbolt'' is its miserly fifteen [[heat sink]]s which cannot cope with firing so many heat-intensive weapons.  ''Thunderbolt'' [[MechWarrior (pilot)|pilots]] must take extra care to manage their heat levels lest they shut down or cause their ammo to cook off, and many will prefer to fight within bodies of water to better cool off their 'Mechs.  Indeed most commanders will order their ''Thunderbolts'' into a waterhole at the outset of a battle so that they may fire their weapons more rapidly than normal.<ref name=TRO3025/><ref name=TRO3039/>

The thirteen tons of armor protecting the ''Thunderbolt'', although no longer the most carried on a 'Mech, is still impressive given the fact many current assault models sport less protection than this ancient design.  The thirteen and a half ton [[fusion engine]] powering the ''Thunderbolt'' gives it a maximum speed of 64.8 km/h.<ref name=TRO3025/><ref name=TRO3039/>

==Variants==
*; TDR-1C : This was the original ''Thunderbolt'' design produced in 2491 by Earthwerks Limited, built with [[Primitive Technology]], until the introduction of the modern TDR-5S in [[2505]]. 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.<ref name=prim3/>

*; TDR-5D : Introduced in 2821, the 5D is a radical departure from the 5S. All short-range weapons are replaced by an [[Autocannon/20]] in the right torso supplied by two tons of ammunition. The left torso mounts an [[LRM-10]] with one ton of ammunition, and 14 heat sinks keep the 'Mech ice-cold. BV (2.0) = 1,231<ref>''Record Sheets: Succession Wars'', p. 183</ref><ref>[http://www.masterunitlist.info/Unit/Details/7431/thunderbolt-tdr-5d MUL online entry for the TDR-5D variant]</ref>

*; TDR-5L : The so-called "Lost Thunderbolt," the 5L was a downgraded version of the Royal 5Sb ''Thunderbolt'' developed by Earthwerks Tikonov in [[2823]]. Built on a more basic standard chassis, the now lostech [[ER PPC]] was swapped for a [[Diverse Optics Sunbeam]] [[ER Large Laser]] but most of the 5Sb's systems were preserved with only the loss of one [[double heat sink]] and the head-mounted [[Small Laser]]. Production of the design only lasted a mere twenty-seven years before further technology decline resulted in the 5LS. BV (2.0) = 1,546<ref name=SSW-116>''Second Succession War'', pp. 116–117: "Rules Annex - Technical Readout - TDR-5L/5LS Thunderbolt"</ref>

*; TDR-5LS : Developed in [[2850]] as the [[Second Succession War]] saw more and more technologies disappear, the 5LS was a downgraded field refit and a factory model of the now impossible to build 5L. While the ER Large Laser and Starfish [[Small Pulse Laser]]s were retained, the standard LRM-15 and [[Bical]] SRM-2 rack were noticeably less accurate than the 5L's more advanced launchers, but nothing compared to the replacement of the 5L's double heat sinks with fifteen standard models and the heat management issues that resulted. Production of even the "primitive" 5LS would end during the [[Third Succession War]]. BV (2.0) = 1,305<ref name=SSW-116/>

*; TDR-5Sb : This [[SLDF Royal]] variant of the ''Thunderbolt'' was introduced in [[2753]] and 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. Fourteen double heat sinks keep the MechWarrior comfortable. BV (2.0) = 1,618<ref>''Record Sheets: Operation Klondike'', p. 45</ref><ref name=HOKp160>''Historical: Operation Klondike'', p.160</ref>

*; TDR-5Sd : This Star League-era [[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]]. It upgrades the heat sinks to twelve double-strength models. How many of these variants survived past the [[Star League Era]] is unknown.<ref>''Era Report: 2750'', p. 129</ref>

*; TDR-5SE : The 5SE variant of the ''Thunderbolt'' was introduced in [[3000]] for use by the [[Eridani Light Horse]] mercenary unit as a raider and reconnaissance 'Mech.  Modified for mobility, this variant has had its SRM-2 launcher and the machine guns removed and the LRM-15 downgraded to an LRM-10 in order to add four [[jump jet]]s, giving the 'Mech a jumping distance of one hundred and twenty meters.<ref name=TRSWp124f /> The 'Mech has also had two [[heat sink]]s added to help dissipate its heat load better.<ref name=TRO3025/> BV (1.0) = 1,180, BV (2.0) = 1,414<ref>''Record Sheets: 3039 Unabridged'', p. 480</ref>

*; TDR-5SS : The 5SS ''Thunderbolt'' is a Steiner variant introduced in [[2930]] that depends more on direct long-range fire instead of missiles. The 'Mech carries a Kreuss [[PPC]] as its primary weapon in its right arm, replaces the LRM launcher for an [[SRM-6]] and removes the SRM-2 to make room for a Zippo Mark IX [[Flamer]] in the right torso.<ref name=TRSWp124f /> To help with the 'Mech's added heat load, the 5SS variant has twenty one heat sinks.<ref name=TRO3025/> BV (1.0) = 1,077, BV (2.0) = 1,337<ref>''Record Sheets: 3039 Unabridged'', p. 481</ref>

*; TDR-5S (C) : A Clan retrofit of the original TDR-5S ''Thunderbolt'' built in [[3050]], 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, an arm-mounted [[ER medium laser]] and two [[ER small laser]]s.<ref name=BFT>''The Battle for Twycross'', pp. 48–49</ref> The saved weight is used to increase the number of heat sinks to 24.<ref>''Battle of Tukayyid Supplemental'', p. 176</ref> BV (2.0) = 1,593<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 148</ref>

*; TDR-7M : Upgraded with Star League technology in [[3049]] by Earthwerks Incorporated, the 7M has been rearmored using [[ferro-fibrous]] armor, reducing the weight of the armor to eleven and a half tons while maintaining the same level of protection. The saved weight has allowed the 'Mech's weapons to be upgraded as well. With an arsenal based on the 5S model, the 7M carries an [[LRM-15]] missile launcher in the right torso, a Diverse Optics Sunbeam ER Large Laser in the right arm, three medium lasers and a [[Hovertec]] [[Streak SRM-2]] launcher in the left torso, and a pair of machine guns in the left arm. Two tons of LRM reloads are kept in the right torso while one ton each of Streak and machine gun ammo are kept in the left torso. Additionally, the heat sinks have been upgraded to [[double heat sink]]s and [[CASE]] has been added to protect against ammunition explosion.<ref name=TRO3050/> BV (1.0) = 1,338, BV (2.0) = 1,495<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 134</ref>

*; TDR-7S : Introduced in [[3091]] at [[Trellshire Heavy Industries]], this ''Thunderbolt'' returned to the successful design paradigm of missiles and lasers supported by heavy armor. A [[Heavy-Duty Gyro]] improved battlefield longevity. Thirteen tons of armor protect the 'Mech. An ER Large Laser, LRM-15, and SRM-2 are present, but the three medium lasers have been replaced by [[ER medium laser|extended range]] versions. A pair of [[Small X-Pulse Laser]]s in the left arm provide anti-infantry capability. Two tons of LRM ammunition and a ton of SRM ammunition are stored in the left torso in a [[CASE II]]-protected bay. BV (2.0) = 1,582<ref>''Recognition Guide: ilClan, vol. 15'', p. 7</ref>

*; TDR-7SE : The 7SE variant introduced in [[3067]] takes the upgrade of the ''Thunderbolt'' even further. The structure has been redesigned to use an Endo Steel structure and 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 'Mech's maneuverability has been enhanced with four jump jets for a jumping distance of one hundred and twenty meters while the primary weapon is a [[Gauss rifle]]. This is backed up by three [[Medium Pulse Laser]]s 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.<ref name=TRCIp146f /> BV (1.0) = 1,737, BV (2.0) = 1,809<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 135</ref>

*; TDR-9M : The 9M was Earthwerks' attempt in 3067 to rebuild the ''Thunderbolt'' for the modern era, modifying it to excel at long-range combat. The 'Mech is built using an Endo Steel chassis and has twelve and a half tons of armor, using angled and sloped [[Starshield A]] armor to further increase protection.  The 'Mech has excellent maneuverability with four jump jets further enhanced with flight stabilizers built into the design. The 'Mech's primary weapon is an Imperator Automatic [[Light Gauss Rifle]] mounted in the right arm. This is supported for long-range combat with a Delta Dart LRM-15 launcher in the right torso and three Diverse Optics ER medium lasers in the left torso for close combat situation.  One ton of Gauss slugs and two tons of LRM reloads are protected by CASE in the right torso.  Finally the cockpit itself was changed, based on feedback from a number of ''Thunderbolt'' pilots who felt they were sitting out in front of the 'Mech.  The more open cockpit of the 9M was moved over to the left torso, which also helps protect the pilot from flying shrapnel in case the Gauss rifle explodes.<ref name=TRCIp146f /> BV (1.0) = 1,500, BV (2.0) = 1,648<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 136</ref>

*; TDR-9Nr : This field expedient refit emerged during the [[Jihad]] in [[3072]]. It uses an [[Experimental Technology|experimental]] [[Bloodhound Active Probe]] to find enemy forces, a Guardian ECM Suite to blind them, and a [[Light PPC]], [[Large VSP Laser]], three ER medium lasers, and a [[Streak SRM-6]] to destroy them. Two leg-mounted [[B-Pod]]s prevent battle armor infantry from getting too close, and a [[C3 slave]] allows this ''T-Bolt'' to coordinate its fire. BV (2.0) = 1,635<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 138</ref>

*; TDR-9NAIS : Using some of the newest technology available in the [[Federated Suns]], the 9NAIS was built in 3067 by [[NAIS]] on an Endo Steel structure and utilizes an [[XL engine]] for power, giving it a ground speed of 86.4 km/h. 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.<ref name=TRCIp146f /> BV (1.0) = 1,637. BV (2.0) = 1,864<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 137</ref>

*; TDR-9S : Based on the older 5SS model, the 9S was built in 3050 by Olivetti Weaponry using off-the-shelf structural components and armor after extensive changes delayed production. The 'Mech is armed with a [[Defiance 1001]] [[ER PPC]] in its right arm as its primary long-range firepower. This is supported at closer ranges by a [[TharHes Maxi]] [[SRM-6]] in the left torso along with the original three medium lasers. While retaining the left arm machine guns, in the right torso it carries a pair of [[Zippo]] flamers and a [[SureFire 444]] [[anti-missile system]], along with one ton of AMS ammo.<ref name=TRCIp146f /> BV (1.0) = 1,244, BV (2.0) = 1,494<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 139</ref>

*; TDR-9SE : The 9SE variant of the ''Thunderbolt'' was introduced in 3050 as the Eridani Light Horse's update to the 5SE, based primarily around an energy weapons arsenal and maneuverability. The 'Mech is armed with a [[Magna Longbow-10]] LRM-10 missile launcher for long-range combat. For close to medium ranges, the 'Mech carries a [[Thunderbolt-12]] [[Large Pulse Laser]] and three Diverse Optics Type 18 medium lasers. Of note is the shifting of the missile launcher and its one ton of reloads from the right torso to the left. The additional mobility of the 9SE comes from its four [[HildCo Model 12]] [[jump jet]]s, originally manufactured in the [[St. Ives Compact]], giving it a jumping distance of one hundred and twenty meters. BV (1.0) = 1,355, BV (2.0) = 1,439<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 140</ref>

*; TDR-9T : This [[3083]] variant uses an XL engine to push its top speed to 96 km/h. It uses an LRM-10, a pair of [[Light PPC]]s 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<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 142</ref>

*; TDR-9W : This variant was built by [[Blackwell Industries]] for [[Wolf's Dragoons]] and it was based on a configuration from the [[Golden Century]].<ref name=rg15p6>''Recognition Guide: ilClan, vol. 15'', p. 6</ref> Four jump jets let it cover 120 meters per jump. Fifteen double heat sinks dissipate the heat from various Clan-spec weapons. The right arm carries a Clan-spec [[Large Pulse Laser]], the three torso-mounted lasers are Clan-spec [[Medium Pulse Laser]]s, and the LRM-10 is also Clan-spec and equipped with an [[Artemis IV FCS]]. Two tons of LRM ammo are carried in the left torso in a [[CASE]]-protected bin. Twelve tons of Inner Sphere-spec ferro-fibrous armor provides maximum protection. BV (2.0) = 1,985<ref>''Recognition Guide: ilClan, vol. 15'', p. 32</ref>

*; TDR-10M : This [[3082]] variant uses an Endo Steel chassis and maximizes the amount of armor protection available. It relies on various PPCs 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<ref>''Technical Readout: 3085'', p. 255</ref>

*; TDR-10S : This [[Dark Age era]] variant carries an ER Large Laser and ER PPC in its arms for long range sniping, while 14 double heat sinks provide enough cooling to fire these weapons on the move. An LRM-15 with 16 salvos supports the direct-fire weapons, while three ER medium lasers come into play at 360 meters. It uses a light fusion engine to provide power, and carries four jump jets. An Endo Steel chassis frees weight for CASE, equipment, and weaponry. BV (2.0) = 1,766<ref>''Record Sheets: 3145 New Tech, New Upgrades'', p. 148</ref>

*; TDR-10SE : Introduced in 3067, 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 use of [[MASC]] gives it superior maneuverability capable of bursts of speed up to 86.4 km/h and four jump jets gives it 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<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 143</ref>

*; TDR-11S : Developed during the [[Dark Age]] as an updated -9S,<ref name=rg15p6/> this variant carries two machine guns in the left arm and two more in the right torso. An anti-missile system is carried in the right torso. Three ER medium lasers are mounted in the left torso, and this is supplemented by an SRM-6. Main firepower comes from an ER PPC in the right arm. Fifteen double heat sinks are fitted and a Heavy-Duty Gyro is also present. BV (2.0) = 1,570<ref>''Recognition Guide: ilClan, vol. 15'', p. 33</ref>

*; TDR-11SE : A newer variant of the ''Thunderbolt'' first built in [[3069]], 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 laser]]s. This variant has added mobility by adding [[improved jump jet]]s 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.<ref>[http://web.archive.org/web/20110703143517/https://www.battlecorps.com/BC2/news.html?article=439 Tinker, Sprinter and "Angry"] </ref> BV (2.0) = 1,754<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 144</ref>

*; TDR-12R : This variant, built on [[Tikonov]] and used by the [[Republic of the Sphere]], is intended to anchor and support vehicle formations. With a top speed of 54 km/h it won't break any speed records, but can keep up with most battle armor and combat vehicle formations. The standard armor is replaced by [[Reflective Armor]] and ammunition has been stored in a [[CASE II]]-protected bay. The right arm carries a [[plasma rifle]], while the right torso carries a pair of [[Thunderbolt 5]] launchers. The left torso is equipped with a [[Clan]]-spec LRM-15, and the traditional medium lasers of the left torso have been replaced by three [[Small Variable Speed Pulse Laser]]s. The left arm carries a pair of standard medium lasers. Twelve double heat sinks handle the heat load. BV (2.0) = 1,975<ref>''Recognition Guide: ilClan, vol. 15'', p. 7</ref>

*; TDR-17S : This [[3070]] refit uses an Endo Steel internal structure and eleven and a half tons of ferro-fibrous armor. These weight savings allowed the design to use a [[compact engine]] and [[Heavy-Duty Gyro]]. Offensively, an ER PPC provides long-range damage, while four medium pulse lasers deal accurate damage up close. These weapons can overwhelm the ten double heat sinks, so [[Triple Strength Myomer]] is included to help speed the 'Mech up. It also uses four jump jets for added maneuverability and a Guardian ECM Suite which wreaks havoc on enemy electronics. BV (2.0) = 1,803<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 145</ref>

*; TDR-60-RLA : Apparently a variant on the 9NAIS, the 60-RLA was first spotted in [[3072]] and adds enough jump jets to vault up to 150 meters at a time. Like the 17S, the RLA also uses eleven and a half tons of ferro-fibrous armor and Triple Strength Myomer. Both arms have hands and lack weapons, but are able to take off an enemy's head with the TSM activated. In order to build up this heat, it mounts a pair of Snub-Nose PPCs, three ER medium lasers, two medium pulse lasers, two small lasers, and a small pulse laser. Twelve double heat sinks dissipate some of the heat these weapons build. BV (2.0) = 1,975<ref>''Record Sheets: 3085 Unabridged — Project Phoenix'', p. 147</ref>

*; ''Thunderbolt'' C : This is a field refit created by the [[Clans]] during [[Operation REVIVAL]]. Captured Inner Sphere ''Thunderbolt''s were refitted and used by garrison and ''solahma'' troops. The ''Thunderbolt'' C had a [[Large Pulse Laser]] in the right arm, an [[ER Large Laser]] in the left torso, and the left arm carried an ER medium laser and a pair of [[ER small laser]]s. Twenty-four single heat sinks are fitted to the legs and all the torsos. BV (2.0) = 1,671<ref>''Recognition Guide: ilClan, vol. 15'', p. 35</ref>

*; ''Thunderbolt'' C 2 : This variant was developed by [[Clan Jade Falcon]] after they recaptured [[Sudeten]]. Based on the ''Thunderbolt'' C, this model has an [[ER PPC]] in the right arm while the left arm carries an ER medium laser and a pair of ER small lasers. The left torso carries a [[Streak SRM-6]], three ER medium lasers, and a ton of Streak ammunition. The right torso carries two [[small pulse laser]]s and an anti-missile system with a ton of ammunition. To make room for this equipment, the twenty-four heat sinks have been replaced by seventeen double heat sinks. BV (2.0) = 2,170<ref>''Recognition Guide: ilClan, vol. 15'', p. 36</ref>

===Custom Variants===
*;TDR-5S-T ''Thunderbolt'' Tallman : The personal 'Mech of [[Bremond DMM]] commander [[Leftenant-General]] [[Mary Tallman]] during the [[DCMS]]' 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<ref name="HTPG">''Historical Turning Points: Galtor'', p. 20</ref>

*; 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<ref>''BattleTech Dossiers: Lamenkov's Liability'', p. 18</ref>

*; 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 ''Thunderbolt''s, 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<ref>''BattleTech Dossiers: Salazar Tsakalotos'', p. 6</ref>

===Component Upgrades===
Component upgrades are manufactured on the following planets:

{|class="wikitable" style="background: #gray; text-align:center; border: 2px solid black;"
|'''Component''' 
|'''Variant''' 
|'''Manufactured on'''  
|'''Manufactured by'''
|'''References'''
|----
| Earthwerks TDR II [[Endo Steel]]
| [[TDR-9M]]
| [[Keystone]]
| [[Earthwerks Incorporated]]
| <ref name=TROPP42>''Technical Readout: Project Phoenix'', p. 42</ref>
|----
| Hovertek [[Streak SRM-2]]
| [[TDR-9M]]
| [[Oriente]]
| [[Oriente Weapon Works]]
| <ref name=OR133>''Objective Raids'', p. 133</ref><ref name=TROPP42>''Technical Readout: Project Phoenix'', p. 42</ref>
|----
| Imperator Automatic Weaponry Light [[Gauss Rifle]]
| [[TDR-9M]]
| [[???]]
| [[???]]
| <ref name=TROPP42>''Technical Readout: Project Phoenix'', p. 42</ref>
|----
| Diverse Optics [[ER Medium Laser]]
| [[TDR-9M]]
| [[???]]
| [[???]]
| <ref name=TROPP42>''Technical Readout: Project Phoenix'', p. 42</ref>
|----
| Delta Dart [[LRM-15]]
| [[TDR-9M]]
| [[???]]
| [[???]]
| <ref name=TROPP42>''Technical Readout: Project Phoenix'', p. 42</ref>
|----
| TharHes Maxi [[SRM-6]]
| [[Various]]
| [[Tharkad]]
| [[TharHes Industries]]
| <ref name=OR82>''Objective Raids'', p. 82</ref>
|----
| Zippo [[Flamer]]
| [[TDR-5SS]]<br/>[[TDR-9S]]
| [[Hesperus II]]
| [[Defiance Industries of Hesperus II]]
| <ref name=OR76>''Objective Raids'', p. 76</ref>
|----
| Defiance 1001 [[ER PPC]]
| [[TDR-9S]]
| [[Hesperus II]]
| [[Defiance Industries of Hesperus II]]
| <ref name=OR76>''Objective Raids'', p. 76</ref>
|----
| [[Jolassa-328 Ferro-Fibrous]] with CASE
| [[TDR-9M]]
| [[Umka]]
| [[Kerr-McGinniss]]
| <ref name=OR138>''Objective Raids'', p. 138,</ref><ref name=TROPP42>''Technical Readout: Project Phoenix'', p. 42</ref>
|----
| Vlar 300 Fusion Engine
| [[TDR-??]]
| [[Edasich]]
| [[Edasich Motors]]
| <ref name=OR84>''Objective Raids'', p. 84</ref>
|----
|}

==Manufacturing==
===Taurian Concordat===
Following the [[Reunification War]], ''[[Toro]]'' factories in the [[Taurian Concordat]] were closed and dismantled by the [[Star League]] with the aim of reducing Taurian nationalism. In their stead, production facilities were laid down for ‘Mechs more closely associated with the Star League.<ref name = TRO3075>''Technical Readout: 3075'', p. 296</ref>

There were two 'Mech facilities, located at [[Taurus]]<ref name=OR162>''Objective Raids'', p. 162</ref> and [[Pinard]]<ref name=OR160>''Objective Raids'', p. 160</ref>, producing the classic ''[[Thunderbolt]]'' TDR-5S version in the [[Taurian Concordat]]. These facilities are owned by [[Taurus Territorial Industries]] (“TTI”) and [[Vandenberg Mechanized Industries]] (“VMI”) respectively.

All component parts for the ''Thunderbolt'' were manufactured within the Concordant. TTI and VMI would also share components with each other where they are not manufactured by another corporation within the Concordat. The two ''Thunderbolts'' produced were essentially the same with the exception of:

* The [[Earthwerks TDR]] Chassis were built at each facility; and

* The fusion engine. TTI built the [[Vlar]] 260 and presumably outfitted all of its ''Thunderbolts'' with this specific engine, while the VMI version uses the classic Magna 260.<ref name=OR162>''Objective Raids'', p. 162</ref>

During the [[Jihad]] era, ''Thunderbolt'' production within the [[Taurian Concordat]] was severely disrupted and in some cases destroyed. The [[SRM-2]] weapons manufacturing facilities on [[Perdition]] were destroyed and the weapons facilities on [[Sterope]] and [[MacLeod's Land]] badly damaged. Even worse, the entirety of the TTI facilities on the capital of [[Taurus]] were destroyed.<ref name="J:FRp117">''Jihad: Final Reckoning'', p. 117: "Taurian Concordat"</ref>

==Design Quirks==
The ''Thunderbolt'' and variants, unless specified otherwise, are subject to the following the following [[Design Quirks]]:<ref>''BattleMech Manual'', p. 95: Design Quirk Table - ''Thunderbolt'' entry</ref>
* [[Multi-Trac]]
* [[Rugged|Rugged (2)]]
* [[Ubiquitous]]

The TDR-1C ''Thunderbolt'' variant is subject to the following [[Design Quirks]]:<ref name=prim3/>
* [[Difficult to Maintain]]
* [[Multi-Trac]]
* [[Poor Workmanship]]
* [[Obsolete|Obsolete/2509]]

==Notable pilots==
:See: [[:Category:Notable Thunderbolt Pilots]]

==Related Designs==
* ''[[Götterdämmerung (BattleMech)|Götterdämmerung]]'' - Lyran Commonwealth variant intended to replace the ''Thunderbolt'' featuring [[Heavy Ferro-Fibrous Armor|heavy ferro armor]] and [[Torso-Mounted Cockpit]].
* ''[[Thunderbolt IIC]]'' - Jade Falcon post-Jihad revision of the ''Thunderbolt''.

==Notes==
* '''Image differences''' - The (original) ''Thunderbolt'' variants and artwork from 3025 were part of the [[Unseen]] 'Mech designs. The ''Thunderbolt'' was [[Reseen]] in 3067 with new variants using revised artwork. By 2016-2017, [[Catalyst Game Labs]] introduced a new image for the earlier ''Thunderbolt'', essentially replacing the original Unseen art work from ''TRO: 3025'' & ''TRO: 3050''.
* '''Replacement Art''' - The ''Thunderbolt'' Unseen appearance was replaced by a new image. This art first appeared in the ''[[Second Succession War (sourcebook)|Second Succession War]]'' sourcebook. The replacement image, like other Unseen art work replacements, have been given the label of "Classic" image versus "Unseen". The "[[Reseen]]" label is still used for the remodeled ''Thunderbolt'' and others introduced in 2003's ''[[Technical Readout: Project Phoenix]]''.
* In German products, the unit's proper name was translated to '''Donnerkeil'''. The model code was changed accordingly to '''DNR-5S'''.
* In French products, the unit's proper name was translated as '''Foundre''', or lightning.

==Gallery==
<gallery>
3025_thunderbolt.jpg|Original [[Unseen]] TDR-5S ''Thunderbolt'' from ''[[Technical Readout: 3025|TRO: 3025]]''
Thunderbolt TDR5S SSW.jpg|TDR-5S ''Thunderbolt'' from ''[[Second Succession War (sourcebook)|Second Succession War]]''
TDR-Thunderbolt.png|Unseen TDR-7M ''Thunderbolt'' from ''[[Technical Readout: 3050|TRO: 3050]]''
Tdr-7se thunderbolt.png|[[Reseen]] TDR-7SE ''Thunderbolt'' from ''[[Technical Readout: Project Phoenix|TRO:Phoenix]]''
Tdr-9m thunderbolt.jpg|Reseen TDR-9M ''Thunderbolt'' from ''TRO:Phoenix''
Tdr-9nais thunderbolt.png|Reseen TDR-9NAIS ''Thunderbolt'' from ''TRO:Phoenix''
Tdr-10se thunderbolt.png|Reseen TDR-10SE ''Thunderbolt'' from ''TRO:Phoenix''
Tdr-10m thunderbolt.png|TDR-10M ''Thunderbolt'' from ''[[Technical Readout: 3085|TRO: 3085]]''
TDR-1C Thunderbolt.jpg|[[Primitive BattleMech|Primitive]] TDR-1C ''Thunderbolt'' from ''[[Experimental Technical Readout: Primitives, Volume 3|XTRO:Primitive III]]''
Thunderbolt (Pavel Ridzik) BTLegends.jpg|TDR-5S ''Thunderbolt'' piloted by [[Pavel Ridzik]] from ''[[BattleTech: Legends|BT:Legends]]''
Camomarikfreeworldsguard1.png|''Thunderbolt'' in colors of [[Free Worlds Guards]] from ''[[Camo Specs]]''
Maevetbolt2sm.jpg|[[Maeve Wolf]] piloting a ''Thunderbolt'' kills [[Alpin Wolf]] in combat, from ''[[Wolf Pack]]'' novel
Thunderbolt BTCTRoW.jpg|A ''Thunderbolt'' swarmed by infantry, from ''[[BattleTech Compendium: The Rules of Warfare|BTC:TRoW]]''
Thunderbolt SolarisVII.jpg|A ''Thunderbolt'' takes a hit to the leg, from ''[[Solaris VII: The Game World]]''
1st Free Worlds Guards Thunderbolt 2ndSW.jpg|A [[1st Free Worlds Guards]] ''Thunderbolt'' during the Second Succession War
Thunderbolt DFA.png|''Thunderbolt'' from ''[[MechWarrior: Death From Above|MWDA DFA]]'' dossiers
MWO Thunderbolt.png|Model of ''Thunderbolt'' from ''[[MechWarrior Online|MWO]]''
File:BattleTech2e-Thunderbolt.jpg|''Thunderbolt'' standee from ''[[BattleTech, Second Edition]]''
File:Mechs-Thunderbolt.jpg|''Thunderbolt'' miniature from ''[[...Mechs!]]'' (also used in ''[[BattleTech, Third Edition]]'')
File:A Game of Armored Combat - Thunderbolt.jpg|''Thunderbolt'' miniature from ''[[BattleTech: A Game of Armored Combat]]''
File:ELH Hunter Lance-Thunderbolt ground.jpg|''Thunderbolt'' miniature from ''[[Eridani Light Horse Hunter Lance]]''
</gallery>

==References==
<references/>

==Bibliography==
{{div col|colwidth=25em}}
* ''[[The Battle for Twycross]]''
* ''[[Battle of Tukayyid Supplemental]]''
* ''[[BattleMech Manual]]''
* ''[[BattleTech Dossiers: Lamenkov's Liability]]''
* ''[[BattleTech Dossiers: Salazar Tsakalotos]]''
* ''[[Era Report: 2750]]''
* ''[[Experimental Technical Readout: Primitives, Volume 3]]''
* ''[[Historical Turning Points: Galtor]]''
* ''[[Master Unit List]]''
* ''[[Recognition Guide: ilClan, vol. 15]]''
* ''[[Record Sheets: 3025/3026]]''
* ''[[Record Sheets: 3039 Unabridged]]''
* ''[[Record Sheets: 3050]]''
* ''[[Record Sheets: 3067]]''
* ''[[Record Sheets: 3085 Unabridged — Project Phoenix]]''
* ''[[Record Sheets: 3145 New Tech, New Upgrades]]''
* ''[[Record Sheets: Operation Klondike]]''
* ''[[Record Sheets: Phoenix Upgrades]]''
* ''[[Record Sheets: Succession Wars]]''
* ''[[Record Sheets: Total Warfare Style Record Sheets: Phoenix Upgrades]]''
* ''[[Second Succession War (sourcebook)|Second Succession War]]''
* ''[[Technical Readout: 3025]]''
* ''[[Technical Readout: 3039]]''
* ''[[Technical Readout: 3050]]''
* ''[[Technical Readout: 3085]]''
* ''[[Technical Readout: Project Phoenix]]''
* [http://web.archive.org/web/20111118114405/http://battlecorps.com/BC2/news.html?article=439 Tinker, Sprinter, and "Angry"]
{{div col end}}

[[Category:'Mechs]]
[[Category:Free Worlds League BattleMechs]]
[[Category:Lyran Commonwealth BattleMechs]]
[[Category:Star League BattleMechs]]
[[Category:SLDF Royal BattleMechs]]
[[Category:German renamed units]]
[[Category:Draconis Combine BattleMechs]]
[[Category:C3 Slave Equipped BattleMechs]]