Thunderbolt

Why it earns its tonnage

Thirteen tons of armour on sixty-five tons is a lot, and it's the reason the old readouts point out a Thunderbolt can carry more plate than some assault mechs. That's not spin. Go and check an Awesome or a Banshee's armour tonnage and you'll find plenty of hundred-tonners that don't beat this heavy.

The weapon spread is deliberate rather than an accident of history. A large laser and an LRM 15 handle the approach, three medium lasers mounted close together concentrate their damage into one spot rather than spreading it thin, and an SRM 2 finishes whatever the lasers opened up. Two machine guns handle infantry. There's a reason for every piece of this loadout, and none of it is wasted tonnage.

What it doesn't have is the heat sinks to run all of it. Fifteen singles against a full alpha strike leaves you well into the red, and every pilot learns the same lesson: pick two or three weapon groups and stick to them, or find water. I mentioned the waterhole tactic already because it's genuinely how the mech gets used, not a joke people make about it.

One more thing worth knowing before you climb in: the cockpit's roomy. Genuinely, notably roomy, enough that Sarna calls it out by name against the Atlas and the BattleMaster. It's a small thing and pilots apparently notice it.

Six centuries, and a Capellan start nobody remembers

Within fifteen years of that first Tikonov production run, Earthwerks pushed outward into the Free Worlds League and set up on Keystone to build the upgraded TDR-5S, and Olivetti Weaponry on Sudeten picked the design up not long after. That's what made Steiner and Marik the biggest Thunderbolt users through the Succession Wars, even though both were perfectly happy selling the design on to anyone else who'd buy it. Which is how the Thunderbolt ends up everywhere: not because one faction guarded it jealously, the way Clan Wolf did with the Timber Wolf, but because everyone who built it wanted to sell as many as possible.

The Taurian Concordat became one of the biggest Periphery users off the back of two separate manufacturers, Vandenberg and Taurus Territorial, both building the thing from their own factories and selling heavily to mercenaries. By the time the Clan Invasion arrived, both Earthwerks and Olivetti had pushed lostech-era upgrades into the field, right up until Clan Jade Falcon took Sudeten and the Olivetti line went with it. They kept building Thunderbolts on outdated tech anyway, right through to 3054, because there was still a market for them even under new management.

Then the Tempest business, which I've already covered above because it deserved its own section. A design that had been in service since the Age of War beat the machine purpose-built to retire it, and kept its factory.

The Jihad wasn't kind to the Periphery side of the story. Taurian production took heavy damage: the SRM factories on Perdition were destroyed outright, the plants on Sterope and MacLeod's Land badly hurt, and the entire Taurus Territorial Industries facility on the Concordat's own capital wiped out. A design that had survived six centuries by being everywhere came within one bad campaign of losing a big piece of its manufacturing base in one go.

It's still around. Trellshire Heavy Industries and Earthwerks were both fielding new variants into the 3120s, over six hundred years after Sarkia Menendez's team on Tikonov got the first one working ahead of schedule.

How these are rated

Every verdict below is against other Thunderbolts available in the same era. Thirty variants over six centuries means the era filtering does real work here, more than on most of the chassis we've covered.

Only the Trap tier is calculated. It is worked out from the variant data rather than decided by me, which means it is falsifiable: to argue with it you only have to name something the cheaper machine gives up. The other three are my opinion and you should treat them that way. 1 of the 30 Thunderbolt variants fail the Trap test. The full rating scale is here, including what it deliberately does not measure.

The variants worth arguing about

All 30 are in the table further down. These are the ones that change how the machine plays.

On the table

Piloting one. Manage the heat before it manages you. Decide before the game which weapon groups you're actually going to fire together and stick to the plan rather than alpha-striking because the target's in range. If there's water on the map, use it, because that's not a gimmick, it's how the design's meant to be played. Lean on the armour: you can absorb hits most machines your weight class can't.

Fighting one. It's dangerous at every range and outstanding at none of them, so pick the range where your own mech has the bigger edge and stay there. Watch for it parking in water early, because a Thunderbolt that's solved its own heat problem is a much nastier fight than one that hasn't. Against the XL-engine variants, a side torso hit is still the fastest way to end things.

What I see go wrong. New pilots fire everything every turn because the mech's carrying so much. Two or three turns of that and you're standing still with a heat penalty while everyone shoots the thing that can't move. Restraint is the actual skill this mech asks for.

Against OpFor Command

If you run solo games with our AI opponent, the Thunderbolt spreads wider across role tags than almost anything else on the site: 11 Brawlers, 9 Skirmishers, 4 Snipers, 3 Missile Boats and 3 Juggernauts.

• The TDR-5S and most of the classic-era fits are Brawlers: balanced weighting, willing to close, and durable enough to make that a reasonable plan.
• The jump-capable late variants, the TDR-9M, TDR-17S and others, mostly land as Skirmishers, going after whatever's already hurt rather than committing hard.
• The Clan-tech C 2 is the one Juggernaut worth worrying about: short-range weighting and the strongest aggression modifier in the engine, on the hardest-hitting variant in the chassis.

A useful chassis to put opposite a scenario where you don't want the AI's behaviour to be predictable from the model number alone.

All 30 variants

Damage figures are the Alpha Strike short, medium and long values. BV is Battle Value 2.0.

Where and when you can field it

Availability for the TDR-5S by era, straight off the Master Unit List.

The rest of the Thunderbolt family

Other machines that do the same job

Take it to the table

Common questions

Stats on this page are generated directly from our variant database, which is reconciled against the Master Unit List for Battle Value, introduction dates and per-era faction availability. Alpha Strike damage values are the standard card figures. If you spot something wrong, tell me and I will fix it.