It's not really about Stock/Trial Mechs, heat discipline or not... It's more about
Energy Heavy Stock/Trial Mechs.
Yes, stock loadouts are supposed to be
slightly to moderately suboptimal compared to custom designs. However, they're not really supposed to be as bad as they are in MWO. And not all stock designs are created equal... some are better than others.
Lets run a quick (for certian values of quick) comparison on two stock Assaults. The Stock AS7-D, and everyone's favorite Energy Boat, the AWS-8Q. In TT, there was a BV(1.0) difference of about 200 between the two. So they're fairly closely matched as an 80 ton and 100 ton assault.
First the AWS-8Q:
3 PPC, 1 Small Laser, 28 heat sinks.
In TableTop: +2 heat per round of fire at max rate of fire. Mech DPS (actual Damage Per Second here) = 30 / 10 = 3.0.
Max
SUSTAINABLE DPS without chance of shutdown: (30 + 30 + 30 + 30 + 20) / 50 = 2.8
A sustainable DPS of 2.8 (or an average of 28 damage per round, if you prefer it that way) is pretty repectable in TT. It's not truly stellar... but the Awesome can deliver each and every round if called for. The stock Awesome 8Q is one of the iconic long range, direct-support mechs.
Safe to say that the AWS 8-Q is supposed to be a powerful 80 tonner, when used correctly. And using it correctly isn't hard. Stay at range as best you're able, fire all three PPCs twice, then fire two. Repeat until dead or targets exhausted.
In MWO, what's the max average DPS of the stock 8Q? Well, 9 heat per PPC, 3 PPCs, 28 heat sinks. 27 heat generated per salvo, 2.8 heat dissipated per second... 27/2.8 = 9.64 seconds per salvo.
So... either you fire all three together, and wait. (~9.64 seconds between each salvo)
Or... you fire each one seperately and wait. (~3.21 seconds between each shot)
Or... you just lean on the trigger for ONE PPC for 9 seconds (3 shots) and wait. (~0.64 seconds extra after the third shot).
In other words, average DPS for the AWS-8Q doesn't change significantly between TT and MWO, right around 3 DPS.
30/9.64 = 3.11 DPS.
"But the AWS can front load damage!" Yep. But that
doesn't affect it's average DPS, because when you front-load damage, you back-load cooldown time. For custom mechs, you can build around this advantage by maximizing your short term damage by maximizing both your alpha and heat cap, but this isn't about customs, it's about Stocks which weren't designed with this in mind. So, frontloading for an AWS...
Max Damage output is 30 points every 3 seconds (for two salvos, shutting on the third salvo), over a maximum period of 9 seconds (plus shutdown + cooldown of almost twenty seconds) or optimally as follows:
Heat cap is at 58.
58 - 18 = 40 (heat cap - final salvo heat) = heat capacity for Max Rate
2.8*3 = 8.4 (heat sinked per firing cycle @ max Rate)
27 - 8.4 = 18.6 (heat gain per firing cycle @ max Rate)
40 / 18.6 = 2.15 (heat capacity for Max Rate / heat gain @ Max Rate = # of firing cycles at max rate)
So 2 full salvos of 3 PPC + 1 salvo of 2 PPC = 80 damage.
Time taken (shots + cooldowns) is 9 seconds.
Time to cool down to repeat this: (heat at max - heat for last cooldown)/ 2.8, therefore 55.2 - 8.4 = 16.71 seconds.
Total time taken (all shots and all cooldown) ~25 seconds. (25.71 if you're trying to be moderately precise)
So max damage output before shutdown: 80, with ~16 seconds or so cooldown between cycles.
Or 80damage /25.71seconds... or roughly 3.11.
Which is very close to the theoretical maximum of ( Damage Per single shot of PPC / (heat per single shot of PPC/Mech heat dissipation rate) ) or ( 10 / ( 9 / 2.8) ) or 3.111... and the difference is rounding error.
What about the AS7-D?
Well Tabletop the AS7-D has twenty heat sinks. That's enough to fire the AC/20, the SRM6, and three MLs (7 + 4 + 9 = 19), every round or a max sustainable (until ammo runs out for the AC in 14 turns) DPS of 4.7 (~67.85%
more than the AWS-8Q, but it will eventually run out of ammo).
In MWO the heat dissipation rate of the AS7-D is 2.0.
Well, the AC/20 has a heat of 6 and a rate of fire of once every 4 seconds. So a heat dissipation rate of 1.5 is necessary to support it at Max RoF. 20/4 is a DPS of 5 right there. But none of the other weapons can be utilized at Max RoF. But, the SRM 6 can fire once every two cycles of AC/20.
4heat / .5 heat/sec = 8 seconds, 15 damage / 8 seconds = 1.5 DPS 5+ 1.5 = 6.875
Therefore the Atlas can output 6.875 DPS sustainable until the ammo runs out on the AC (2 tons of ammo, 7 shots per ton, 14 shots, therefore 56 seconds of fire).
56 seconds of fire at 6.875 DPS (or 14 salvos at 27.5 pts per salvo, every 4 seconds)
[edit] Forgot to account for +tweak to SRMs.
Heat cap is at 40, so that's ten shots of ML, But if you try to do it, you'll shutdown, so call it 7 shots distributed however you'd like during the firing, and you stay up the entire time.
14*27.5 + 7*5 = 525 damage output
420/56 = 7.5 DPS. [Derp Edit] basically doubled the SRM damage...
Which is 267.86% ( 167.86% more than) the DPS of AWS-8Q, and can maintain that DPS for almost a minute of continuous fire without danger of shutdown, and even after the AC runs out of ammo, the AS7-D still puts out a higher DPS on 2 MLs and the SRM6 (5.75 DPS) though the ammo for the SRM6 doesn't last much longer than the AC (2 shots). Then it's down to just the MLs... which lets it put out 2.5 DPS on those alone ( 20/(16/2) = 2.5 ) by firing one every two seconds, or all four every 8 seconds.
THIS is why
some Stock builds are "good" or "are viable" and why others are "junk," "garbage," or "deathtraps." The shift from TT to MWO has improved (in some cases radicallly) how certian mechs work (eg AS7-D), while making little to no change in others (eg AWS-D). The shift between TT and MWO isn't accounted for in the stock designs.
Granted, the AWS has a range advantage over the Atlas's AC/20, SRMs and Medium Lasers. But to use it, it has to stand/stay in the open... where the Atlas can simply pound on it with the (as yet unaccounted for) LRM 20 as it closes. So the AS7-D can cover it's own advance with a high percentage of the damage output of the AWS (>2/3ds even if some of the missiles miss), if it HAS to approach in the open. Much better for the Atlas if it can use cover for part or all of the approach. Alternatively the AS7-D can engage from beyond the range of the AWS-8Q, and either force it into cover or to actually begin closing the range itself, either of which the AS7-D can exploit by charging. Granted there's not much ammo for the LRMs... but it's enough to do significant damage to a mech in the open.
[Derp edit explained] When I came up with the figure for 35 pts per salvo on the AS7-D I was incorrectly salvoing the SRMs every shot of the AC, when it should have been every other shot. The figure of 27.5 damage per salvo is correct. It's always the simple stuff you screw up and catch later.
Edited by Vapor Trail, 04 December 2012 - 01:29 AM.