4 replies to this topic

[AedanCousland]

Genuine question this, because I'm quite confused over it. I'm looking at a theoretical build for an IS Mech I haven't bought yet, and with an XL Engine I can fit 310 which weights in at 17.5 tons. The same rated Light Fusion Engine weighs in at 22.5 tons. That's five tons heavier but I thought Light Fusion was meant to be the lightest engines? If the reverse is true why would someone like me who is used to Clan Mechs, ever use a LF?

[Y E O N N E]

XL stands for "Extra Light." Light engines are in-between standard and Extra Light.

The reason to use the LFE is because you die when you lose a single side torso with an IS XL engine.

Also, if you plan on using two UAC/5 or one AC/20 in a single side torso you can't do it with the XL taking up three slots there; LFE uses only two per side.

Edited by Yeonne Greene, 15 August 2018 - 01:14 AM.

[AedanCousland]

Oh I see, I thought it was the standard abbreviation for Extra Large. That's what was confusing me. As for dying to side torsos, I use almost exclusively Clan Omni Mechs so I know the pros and cons, I was just confused over the weight. Thanks again.

Edited by AedanCousland, 15 August 2018 - 01:34 AM.

[Tarl Cabot]

The cXL and LFE death only happens after losing both ST while isXL death occurs with loss of ONE ST. PGI is using only a part of the engine crit rules from the TT (tabletop BT). Lets say that a number of us believe PGI should use those rules as part of the flavor due to not sticking to using only a part of the ruleset.

FYI, MWO engine weight includes not just the TT engine weight but also the cockpit and gyro weight, just in case you even look into that. In TT those weights are separate.

Below is the actual BATTLETECH ENGINE only numbers, and not just for STD vs LFE vs XL.

Cockpits - All are 3 tons regardless of mech weight
Gyros - engine rating/100

Examples from BT

400 engine rating XL 26.5 tons, LFE 39.5 tons and STD 52.5 tons

300 engine rating XL 9.5 tons (50% lighter than STD) / LFE 14.5 tons / STD 19.0 tons

MWO 300 engine rating
XL- 9.5(engine) + 3 (cockpit) + 3 (gyro) = 15.5 tons
LFE - 14.5 + 3 + 3 - 20.5 tons
STD - 19.0 + 3 + 3 = 25 tons

[Y E O N N E]

AedanCousland, on 15 August 2018 - 01:34 AM, said:

Oh I see, I thought it was the standard abbreviation for Extra Large. That's what was confusing me. As for dying to side torsos, I use almost exclusively Clan Omni Mechs so I know the pros and cons, I was just confused over the weight. Thanks again.

So we are clear, the IS version of the XL does not behave like the Clan one. The weight is the same, but a Clan XL will let you lose one side torso and survive with some penalties to speed and cooling. If you lose any one of your torso parts with an IS XL, you are simply killed. The LFE provides the IS with an engine that offers the same behavior as the cXL, but at increased weight.