S4nn4
24th Imperial Crusade
Amarr Empire
2
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Posted - 2012.09.23 10:09:00 -
[1] - Quote
CCP Fozzie wrote:
Stabber:
Mobility (max velocity / agility / mass / align time): 285(+54) / 0.5(+0.02) / 11400000 / 5.3s (+0.2)
Signature radius: 105
Stabber: Too fast and too small, nerf a little?
The stabber will be both very fast and very small with these values. This will make it harder for both missiles and turrets to do damage to it. I will make an attempt at showing how much extra tank this would give.
Only base speeds will be considered, to avoid mixing in fittings into this, if both ships fit an AB the differance (ratio) of their performance should not change much anyway.
The missile case is easist to show. For turrets only the need for tracking will be looked at, although, the pilots can still decide to fly in a way that reduce the need for tracking, in which case the Stabber will loose its edge.
Comparison of Stabber vs a "standard cruiser" (with 125m sig radius and 225m base speed (=caracal / omen)):
Damage from heavy missiles (T1/Navy type, all skills at 5, no extra bonus from hull, modules, rigs or hardwires):
"Standard cruiser" (125m sig radius)
Vstartspeedtanking = 162m/s
Vhalfdmg = 447,4m/s
Vquarterdmg = 1235,7m/s
Vbasespeed = 225m/s * 1.25 (skill bonus) = 281m/s -> 68,7% dmg remaining from missiles
Stabber (105m sig radius)
Vstartspeedtanking = 136.1m/s
Vhalfdmg = 375,8m/s
Vquarterdmg = 1038m/s
Vbasespeed = 285m/s * 1.25 (skill bonus) = 356m/s -> 52% dmg remaining from missiles
Angular velocities against turrets (T1/Navy ammo, all skills at 5, no extra bonus from hull, modules, rigs or hardwires):
"Standard cruiser"
No penalty or bonus to tracking for medium turrets against this target size
@ 5km range, transversal = targets base speed -> angular velocity = 0.056rad/sec (target orbits around a stationary attacker)
@ 5km range, transversal = targets base speed + 281m/s -> angular velocity = 0.11rad/sec (target and attacker travelling in opposite directions, attacker is given the speed 281m/s)
@ 30km range, transversal = targets base speed -> angular velocity = 0.0094rad/sec (target orbits around a stationary attacker)
@ 30km range, transversal = targets base speed + 281m/s -> angular velocity = 0.019rad/sec (target and attacker travelling in opposite directions, attacker is given the speed 281m/s)
"Stabber"
-16% tracking penalty for medium turrets against this target size (the inverse of this number corresponds to a +19% increase to the effective angular velocity)
@ 5km range, transversal = targets base speed -> angular velocity, +19% from small target size = 0.085rad/sec (target orbits around a stationary attacker)
@ 5km range, transversal = targets base speed + 281m/s -> angular velocity, +19% from small target size = 0.15rad/sec (target and attacker travelling in opposite directions, attacker is given the speed 281m/s)
@ 30km range, transversal = targets base speed -> angular velocity, +19% from small target size = 0.014rad/sec (target orbits around a stationary attacker)
@ 30km range, transversal = targets base speed + 281m/s -> angular velocity, +19% from small target size = 0.025rad/sec (target and attacker travelling in opposite directions, attacker is given the speed 281m/s)
Summary:
Only base speeds has been considered. No AB's or speed modules have been taken into consideration. Even with AB's the comparison between the ships should remain pretty much the same, the only differance is that more speed will mean that the weapons do weaker hits each time. MWD's do not help when speed tanking due to the sig bloom (interceptors, AF's and some faction MWD's are exceptions).
A standard cruiser at base speed will take 68,7% damage from missiles, while the stabber takes 52%. Under these conditions, that is x1.32 more damage for the standard cruiser.
For turrets, the stabber will be pushing the attackers tracking value quite a bit (425mm AC's has 0.132rad/sec and Neutron blasters 0.12rad/sec, all skills V and no extra bonus). When angular velocity = tracking, the situation is identical to being at a full falloff distance (50% hits), which leads to 40% remaining DPS with everything considered. Roughly speaking, this leads to a situation where the "standard cruiser" will take about +33% more damage than the Stabber.
This speed and size gives the Stabber, very roughly speaking, about +33% ehp compared to a "standard cruiser", against both missiles and turrets.
If this argument holds, I think it would be a good idea to nerf the Stabber a little. Either by a loss of ehp, but that makes it vulnerable to being alpha:ed. Or by giving it a >125m sig radius, to compensate for its extreme speed. |