a 'Mech from Battletech that has a reputation for being very resilient. many players will chose this weathered design over 'Mechs that have more advanced technology because of the psychological advantage that piloting a Thunderbolt caries.



compiled overview of the 65ton Thunderbolt 'mech, from various BattleTech novels and game sourcebooks:



The TDR-5S Thunderbolt is a familiar 'Mech throughout the Successor States. First produced in 2491, it was used extensively in assault lances of the era. Known for its heavy armament and hard-hitting assault capability, the Thunderbolt remains a favorite of many MechWarriors.
The TDR-5S Thunderbolt was one of the first 'Mechs designed for planetary assault. In its early years, it was also one of the heaviest assault 'Mechs possible to produce. As technology advanced, the Thunderbolt was inevitably superseded by larger, more advanced heavy 'Mechs. Because of its excellent design, however, the Thunderbolt remained in production, and some of the newer technology was added to its sub-assemblies. The Thunderbolt is respected as a tough opponent all across the Successor States.
The Thunderbolt remains one of the best-armed 'Mechs in existence. Its standard Sunglow Type 2 large laser packs a punch that few 'Mechs of any type can withstand. Combined with its three Diverse Optics Type 18 medium lasers and its drum-mounted Delta Dart LRM 15-rack, the Thunderbolt has more than ample firepower at long and medium ranges. For close-in combat, the 'Mech also carries a Bical short-range missile twin rack and two Voelkers 200 machine guns. There are very few opponent 'Mechs that can match this kind of firepower.
The Thunderbolt's armor is another of the 'Mech's impressive features. Though not the heaviest armor known today, it is still considered substantial, and many newer heavy 'Mechs have considerably less.
With all its heavy weaponry, however, the Thunderbolt is more susceptible to heat buildup than many other 'Mechs. Careful salvo firing of the Thunderbolt's weapons is a must if the vehicle is to avoid heat overload and shutdown. In many battles, commanders order their Thunderbolts into bodies of water early on, which allows them to fire more of their weapons than normal. Water holes in combat areas are always of great tactical value, but for the Thunderbolt, they are desperately needed to utilize its entire armament.
In a raid on the planet Damian in 2902, 'Mech lances of Heimar Valasek, Bandit King of Santander V, engaged elements of Kurita's 9th Sun Zhang Academy Cadre, which were on the planet for maneuvers. In six hours of pitched battle, three old Thunderbolts standing in the middle of Lake Omenshoufter withstood an assault by at least ten 'Mechs of various types sent against them by the pirate commander. The raiders finally withdrew when reinforcements from Damian's capital arrived on the scene. Forced to their DropShips, they left the planet empty-handed.
In the year 3000, a reconnaissance in force by the Eridani Light Horse on the Kurita planet Benet led to a costly surprise for that unit. Scouting for a reported secret supply dump, two recon lances supported by four jump-capable Thunderbolts were ambushed by the better part of the First Pesht Regulars. The Eridani commander saw no recourse but to withdraw, and ordered the four Thunderbolts to cover the lighter 'Mechs' retreat. Dodging the traps and enfilades that the Kurita 'Mechs tried to create, the Thunderbolts successfully covered the retreat, but absorbed a tremendous amount of damage doing so. Only one of the four 'Mechs was able to make it to the last DropShip before it lifted off.



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