BattleTech Movement Rate – To – Max Profitable BattleMech Tonnage Guide for Munchkins

A bit, after seeing Brian Sugrim in michigan 8/11-8/15 in Kalamazoo, Michigan, I got back into BattleTech a little bit, mostly on influence on his 5-year old son being big into transformers. The tangent is that BattleMechs are largely humanoid, and in the case of Land-Air ‘Mechs, they are transformers as well, but piloted war-machines rather than self-sentient robots. Imperial Walkers in Star Wars (AT-AT and AT-ST) could be technically BattleMechs also, but much heavier. I havn’t touched my BattleTech stuff much since I was 19 or 20 (1994-1996). I only have the boardgame, Compendium, and Mechwarrior RPG, but now, I have nearly every BattleTech book now (some hoarded back in 2004 but a lot of new ones recently), in PDF, thanks to eMule!

I made a max-tonnage for a desired movement rate munchkinning guide for you BattleMech designing munchkins like me. Pick the engine type (Normal, Light , eXtraLight, eXtra-eXtraLight), and a movement rate. Then get the max total ‘Mech tonnage that you can have with that movement rate before you actually start losing tonnage available to armor, weapons, electronic warfare, and other eqipment rather than gaining due to the tonnage increase from the engine (fusion reactor) + gyro + internal structure exceeds the tonnage increase of the overal unit. You can have a lower weight BattleMech for the given movenet rating, but not higher, else you will have LESS space for weapons and such rather than MORE.

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Compact Reactor
Maximum Tech (Level 3) or Total Warfare (Tournament Legal)
Inner Sphere Only; Only use 3 critical slots in CT instead of 6.
+50% mass (3/2)

MP      Tonnage     Engine      Armor/Weap  Notes
3       100         300         55.5-60.5
4       70 or 75    280 or 300  33-36.5     Engine Weight Diff 4.5: Tie with both endo-steel and normal Internal structure.
5       50 or 55    250 or 275  20.0-22.5   Engine Weight Diff 4.5: Tie with both endo-steel and normal Internal structure.
6       40 or 45    240 or 270  12.5-14.5   Engine Weight Diff 4.5: Tie with both endo-steel and normal Internal structure.
7       30 or 35    210 or 245  7.5-9.0     Engine Weight Diff 4.5: Tie with both endo-steel and normal Internal structure.
8       25          200         4.5-5.5     Engine Weight Diff 4.5; No 30 b/c of Gyroscope weight increase (200 vs 240).
9       20          180         2.5-3.5     Engine Weight Diff 4.5; No 30 b/c of Gyroscope weight increase (180 vs 225).
10      15 or 20    150 or 200  0.0-1.0     Engine Weight Diff 4.5: 20 tons if Internal Structure is Endo-Steel, Tie Otherwise.
11      15          165         -0.5-0.0    Endo-Steel Required to fit cockpit and Gyro. No Armor, No Weapons.

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Standard Reactor

MP      Tonnage     Engine      Armor/Weap  Notes
3       100         300         65.0-70.0
4       75 or 80    300 or 320  42.5-46.5   3.5 Ton engine weight difference, but Gryo weight increase of +1: 80 tons if Internal Structure is Endo-Steel, Tie Otherwise.
5NoJump 60          300         29.0-32.0   Engine Weight Diff 4.5; No 65 b/c of Gyroscope weight increase (300 vs 325)
5Jump   55          275         28.0-30.5   4.5 Ton Engine Diff + 0.5 Ton IS Diff + 2.5 Ton Jump Jet Diff = 2.5 Ton Profit (2.0 Ton with Endo-Steel)
6       50          300         20.0-22.5   Engine Weight Diff 4.5; No 55 b/c of Gyroscope weight increase (300 vs 330)
7       40          280         14.0-16.0
8       30 or 35    240 or 280  9.5-11.0    Engine Weight Diff 4.5: Tie with both endo-steel and normal Internal structure.
9       25 or 30    225 or 270  6.5-8.0     Engine Weight Diff 4.5: 30 tons if Internal Structure is Endo-Steel, Tie Otherwise.
10      20          200         4.5-5.5     No 25 b/c of Gyroscope weight increse (200 vs 250)
11      15          165         2.5-3.0     No 20 b/c of Gyroscope weight increase (165 vs 220)
12      15          180         1.5-2.0     No 20 b/c of Gyroscope weight increase (180 vs 240)
13      15          195         0.5-1.0

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Light Reactor
New - Total Warfare - Tournament Legal
Inner Sphere only; 2 Critical Slots in Each Side Torse - Less Survivability, but not as bad as XL (makes it the same as clan-XL).
-25% Mass (3/4)

MP      Tonnage     Engine      Armor/Weap  Notes
3       100         300         69.5-74.5
4NoJump 85 or 90    340 or 360  49.0-53.5   Engine Weight Diff 4.5: 90 tons if Internal Structure is Endo-Steel, Tie Otherwise.
4Jump   85          340         49.0-53.0   4.5 Ton Engine Diff + 0.5 Ton IS Diff + 4.0 Ton Jump Jet Diff = 4.0 Ton Profit (3.5 Ton with Endo-Steel)
5       65 or 70    325 or 350  33.5-37.0   Engine Weight Diff 4.5: 70 tons if Internal Structure is Endo-Steel, Tie Otherwise.
6       50          300         24.5-27.0   Engine Weight Diff 4.0; No 55 b/c of Gyroscope weight increase (300 vs 330); But only 0.5 Ton profit over 55 tons (Engine 4 Gyro 1 IS 0.5).
7       40          280         18.0-20.0   Engine Weight Diff 4.5; No 45 b/c of Gyroscope weight increase (280 vs 360).
8       35          280         13.5-15.0   Engine Weight Diff 4.5; No 40 b/c of Gyroscope weight increase (280 vs 320).
9       30          270         10.0-11.5
10      25          250         7.0-8.0
11      20 or 25    220 or 275  4.5-5.5     Engine Weight Diff 4.5: Tie with both endo-steel and normal Internal structure.
12      15 or 20    180 or 240  3.0-4.0     3.5 Ton engine weight difference, but Gryo weight increase of +1: 20 tons (0.5 ton profit) if Internal Structure is Endo-Steel, Tie Otherwise.
13      15          195         2.5-3.0
14      15          210         0.5-1.0
15      15          225         0.0-0.5     Need Endo-Steel to mount very light armor or a small laser.
16      10          160         -0.5-0.0    Endo-Steel Required to fit cockpit and gyro. No Armor, No Weapons.

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XL (eXtraLight) Reactor
2 (Clan) or 3 (Inner Sphere) Critical Slots in Each Side Torso - Less Survivability, Especially for Inner Sphere!
-50% Mass (1/2)

MP      Tonnage     Engine      Armor/Weap  Notes
3       100         300         74.5-79.5
4NoJump 95          380         58.0-62.5
4Jump   85          340         56.0-60.0   7.0 Ton Engine Diff + 1.0 Ton IS Diff + 4.0 Ton Jump Jet Diff = 2.0 ton profit (1.5 Tons with Endo-Steel)
5       70 or 75    350 or 375  41.0-44.5   Engine Weight Diff 4.5: Tie with both endo-steel and normal Internal structure
6NoJump 60          360         30.5-33.5
6Jump   55          330         30.0-32.5   4.0 Ton Engine Diff + 0.5 ton IS Diff + 3.0 Ton Jump Jet Diff = 2.5 Tons Profit (2.0 Tons with Endo-Steel)
7       50          350         23.0-25.5
8       35 or 40    280 or 320  17.5-19.5   3.5 Ton engine weight difference, but Gryo weight increase of +1: 40 tons (0.5 ton profit) if Internal Structure is Endo-Steel, Tie Otherwise.
9       30 or 35    270 or 315  13.5-15.0   3.5 Ton engine weight difference, but Gryo weight increase of +1: Tie with both endo-steel and normal Internal structure.
10      30          300         11.5-13.0
11      25          275         8.5-9.5     Engine Weight Diff 4.5; No 30 b/c of Gyroscope weight increase (275 vs 330)
12      25          300         7.0-8.0
13      20          260         5.0-6.0
14      20          280         4.0-5.0
15      15 or 20    225 or 300  2.5-3.5     Engine Weight Diff 4.5: 30 tons if Internal Structure is Endo-Steel, Tie Otherwise.
16      15          240         1.5-2.0
17      15          255         1.0-1.5
18      10          180         0.5-1.0
19      10          190         0.0-0.5     Engine Weight Diff 4.5: No 15 b/c of Gyroscope weight increse (190 vs 285). Need Endo-Steel to mount very light armor or a small laser.
20      10          200         -0.5-0.0    Endo-Steel Required to fit cockpit and gyro. No Armor, No Weapons.

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XXL Reactor
Level 3 Rules; Maximum Tech Book.  Not in Total Warfare (Not tournament legal)
2 Heat Standing Still; 4 Heat Walk; 6 Heat Run; Double Heat Jumping!
4 (Clan) or 6 (Inner Sphere) Critical Slots in Each Side Torso - Much Less Survivability, Even for Clans!
-67% Mass (1/3)

MP      Tonnage     Engine      Armor/Weap  Notes
4       100         400         65.5-70.5
5       75 or 80    375 or 400  47.5-51.5   Engine Weight Diff 4.5: 80 tons if Internal Structure is Endo-Steel, Tie Otherwise.
6NoJump 60 or 65    360 or 390  36.0-39.0   Engine Weight Diff 4.5: Tie with both endo-steel and normal Internal structure.
6Jump   55          330         34.0-36.5   2.5/7.0 Ton Engine Diff + 0.5/1.0 ton IS Diff + 3.0 Ton Jump Jet Diff = 1.0 Tons Profit (0.5 Tons with Endo-Steel)
7       50 or 55    350 or 385  28.0-30.5   Engine Weight Diff 4.5: Tie with both endo-steel and normal Internal structure.
8       45          360         22.5-24.5
9       40          360         18.0-20.0
10      30 or 35    300 or 350  14.5-16.5   3.5 Ton engine weight difference, but Gryo weight increase of +1: Tie with both endo-steel and normal Internal structure.
11      30          330         11.5-13.0
12      25          300         10.0-11.0   Engine Weight Diff 4.5: No 30 b/c of Gyroscope weight increse (300 vs 360)
13      20          260         7.5-8.5     Engine Weight Diff 4.5: No 25 b/c of Gyroscope weight increse (260 vs 325)
14      20          280         6.5-7.5
15      20          300         5.5-6.5
16      15 or 20    240 or 320  3.5-4.5     3.5 Ton engine weight difference, but Gryo weight increase of +1: 20 tons (0.5 ton profit) if Internal Structure is Endo-Steel, Tie Otherwise.
17      15          255         3.0-3.5     No 20 b/c of Gyroscope weight increse (255 vs 340)
18      15          270         2.5-3.0
19      15          285         2.0-2.5
20      15          300         1.0-1.5
21      10          210         0.0-0.5     Engine Weight Diff 4.5: No 15 b/c of Gyroscope weight increse (210 vs 315). Need Endo-Steel to mount very light armor or a small laser.
22      10          220         -0.5-0.0    Endo-Steel Required to fit cockpit and Gyro. No Armor, No Weapons.

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Update 2007-09-15: Added Compact Engines Table; Changed category (new); Other minor changes

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