Strf 9040 BILL

Strf 9040 BILL

Pbv 302 (BILL)

Strf 9040 BILL

Pbv 302 (BILL)

Sweden

VII Rank

Battle rating:

AB	RB	SB
10.7	10.3	10.3

Class:

Light tank

Research:300 000

Purchase:830 000

Show in game

Description

The Stridsfordon 9040 BILL is a rank VII Swedish light tank with a battle rating of 10.7 (AB) and 10.3 (RB/SB). It was introduced in Update "Starfighters".

General info

Survivability and armour

Smoke grenades

Creation of a smoke screen in front of the vehicle

Armourfront / side / back

Hull20 / 16 / 20

Turret20 / 20 / 20

Crew4 people

Visibility101 %

The Strf 9040 BILL does not have the MEXAS armor package of the Strf 9040C and Lvkv 9040C, and as such the protection is very limited. The frontal arc of the vehicle can protect against heavy machine guns but the sides and rear of both the hull and turret are vulnerable even to .50 caliber (12.7 mm) heavy machine guns. The frontal arc can not protect against cannons of even 20 mm in caliber, except on the upper glacis which has a shallow enough angle to cause armor piercing rounds of types other than APDS and APFSDS to ricochet. The turret front and lower glacis on the other hand do not have such angles and can not cause ricochets in the same way, allowing low caliber cannons to penetrate. HEAT and HESH rounds will penetrate the frontal armor without a problem.

The crew placement of the Strf 9040 BILL is both potential helpful and harmful. A shot to the front, left side of the hull would result in the knocking out of the driver, commander, and loader. This is potential devastating as that is three out of five crew members taken out in one shot, with only one more lost resulting in a vehicle knockout. A shot to the right side of the vehicle's front would knock out the engine and if it had enough penetration would go through and take out the gunner and loader, two out of five crew members but also causing the vehicle to be immobilized. As before stated, the engine can absorb projectiles, preventing them from passing into the crew compartment if they don't have high enough penetration, but it does immobilize the vehicle and potentially allow the enemy to get another shot off immediately afterwards. In terms of ammunition stowage, all 40 mm ammunition is stowed in the base of the turret basket and the hull underneath the turret basket. This prevents most hits from causing a cookoff of 40 mm ammunition except for particularly low hits. On the other hand, the missile stowage is at the rear of the hull and takes up a significant volume, making the missile ammunition a large target. Additionally, the missile launcher has missiles in it which can also be detonated by incoming rounds.

Overall, the Strf 9040 BILL has very light armor and insufficient protection meaning nearly all weapons can penetrate it that are larger than a machine gun. Sometimes the internal arrangement can result in a hit not knocking out the vehicle but nearly any hit will be critical. The upper glacis can block some shots because of the high angle but this can not be relied upon. Finally, the ammunition stowage - particularly the missile stowage - takes up a large volume of the vehicle and can be set off very easily.

Armour type:

• Rolled homogeneous armour - hull, turret sides/rear
• Cast homogeneous armour - turret front

Armour	Front (Slope angle)	Sides	Rear	Roof
Hull	20 mm (78°) Upper glacis 20 mm (29°-41°-52°) Lower glacis	6 + 10 mm (Spaced) Upper 10 mm Lower	20 mm	20 mm Roof 6 mm Rear roof crew hatch
Turret	20 mm (35°) - 20 mm (50°) Turret front 35 mm (Various Angles) Gun mantlet	20 mm
Cupola	20 mm

Notes:

• There is a 10 mm RHA plate between the front of the vehicle and the driver and also between the engine and crew compartments
• Tracks, suspension - 20 mm
• Sideskirts, turret rear stowage boxes - 5 mm

Mobility

Speedforward / back

AB78 / 51 km/h

RB and SB70 / 46 km/h

Number of gears8 forward

4 back

Weight23.7 t

Engine power

AB1 049 hp

RB and SB550 hp

Power-to-weight ratio

AB44.3 hp/t

RB and SB23.2 hp/t

Game Mode	Max Speed (km/h)		Weight (tons)	Engine power (horsepower)		Power-to-weight ratio (hp/ton)
	Forward	Reverse		Stock	Upgraded	Stock	Upgraded
Arcade	78	51	23.7	852	1,049	35.95	44.26
Realistic	70	46		486	550	20.51	23.21

As the Strf 9056 lacks the add-on modular armour of the 90C variants, it has a noticeably lighter feel on the move. The low weight combined with high-output Scania engine leads to an agile and swift moving vehicle, able to do sneaky flanking maneuvers and capable of climbing steep hills to get into ambush positions. When played right, the Strf 9056 is quicker than the Strf 90C, and is able to surprise enemies by showing up in unexpected places.

Modifications and economy

Repair costBasic → Reference

AB3 971 → 6 647

RB3 415 → 5 716

SB4 581 → 7 668

Total cost of modifications245 400

400 000

Talisman cost2 900

Crew training240 000

Experts830 000

Aces2 100

Research Aces1 140 000

Reward for battleAB / RB / SB

140 / 180 / 230 %

238 / 238 / 238 %

Modifications

Mobility	Protection	Firepower
Tracks Research: 13 000 Cost: 20 000 370 Suspension Research: 9 900 Cost: 15 000 280 Brake System Research: 9 900 Cost: 15 000 280 Filters Research: 13 000 Cost: 20 000 370 Transmission Research: 17 000 Cost: 26 000 490 Engine Research: 17 000 Cost: 26 000 490	Improved Parts Research: 3 900 Cost: 20 000 370 Improved FPE Research: 3 000 Cost: 15 000 280 Crew Replenishment Research: 13 000 Cost: 20 000 370 Smoke grenade Research: 17 000 Cost: 26 000 490	Horizontal Drive Research: 13 000 Cost: 20 000 370 Laser rangefinder Research: 13 000 Cost: 20 000 370 Adjustment of Fire Research: 9 900 Cost: 15 000 280 Airstrike Research: 9 900 Cost: 15 000 280 40mm_sw_kan_HE_VT_ammo_pack Research: 9 900 Cost: 15 000 280 Elevation Mechanism Research: 13 000 Cost: 20 000 370 Improved optics Research: 13 000 Cost: 20 000 370 NVD Research: 13 000 Cost: 20 000 370 Artillery Support Research: 17 000 Cost: 26 000 490 Scout UAV Research: 17 000 Cost: 26 000 490

Armaments

Laser rangefinder

Reduces the error and increases the maximum measurable distance of the rangefinder

Night vision device

Improves visibility by enhancing natural light or active illumination.

Thermal imager

Allows to see thermal radiation in the infrared range day and night

Main armament

40 mm Akan m/70B cannon

Two-plane stabilizer

Reduces the swing of the gun in two planes while moving

Autoloader

Automatically feeds projectiles into the breech. The speed does not depend on the skills of the loader

Ammunition234 rounds

First-order24 rounds

Reload0.2 s

Vertical guidance-8° / 35°

The Strf 9056, like the two other Strf 9040 variants (The Strf 90C and Lvkv 90C), is armed with a Bofors L/70 40 mm anti-aircraft gun repurposed as an omnipurpose (anti-tank, anti-aircraft) gun. The automatic cannon boasts a rapid fire rate, a magazine holding 24 shells, and a complete maximum load of 234 shells. The gun's internal 24-shell magazine is quickly replenished, and is usually enough to deal with both enemy armour, helicopters, and airplanes. It does however carry a risk of surprising the player by running empty - thanks to its high rate of fire. The shells carried are the same as on the Lvkv 90C - the spårljuspansarprojektil m/90 (APFSDS-T), spårljusspränggranat m/90 (HE-T), and kulspränggranat m/90 (HE-VT). The former two are stock shells - the latter is unlocked through research, on the 2nd tier for an RP cost of 18.000, and has a proximity fuze, very helpful against air targets.

The Strf 9056 also carries a 7.62 mm Ksp 39C, coaxial to the main gun, placed in its turret cheek. The most unusual armament is however the Robot 56 "BILL 2 - Bofors, Infantry, Light & Lethal". The dual-missile launcher, mounted on the right side of the turret, can be devastating to enemy armour behind cover. Its missiles fly above the point of aim, detonating above the vehicle, firing its explosively formed penetrator through the turret roof or engine deck, thus hitting areas with the lowest armour protection. A well-aimed hit can destroy a target in a single hit by igniting ammunition, igniting fuel tanks, or knocking out crew. The missiles do however have a limited range of only 2200 meters, and a relatively low speed of 250 meters per second. Used carefully, the vehicle's load of 8 missiles can easily knock out 8 enemy tanks!

40 mm akan m/70B						Turret rotation speed (°/s)					Reloading rate (seconds)
Mode	Capacity	Fire rate	Vertical	Horizontal	Stabilizer	Stock	Upgraded	Full	Expert	Aced	Stock	Full	Expert	Aced
Arcade	234	300	-8°/+35°	±180°	Two-plane	33.2	46.0	53.9	63.7	65.7	0.20	0.20	0.20	0.20
Realistic						20.8	24.4	28.6	33.9	34.9

Ammunition

Penetration statistics
Ammunition	Type of warhead	Penetration @ 0° Angle of Attack (mm)
		10 m	100 m	500 m	1,000 m	1,500 m	2,000 m
slpprj m/90	APFSDS	143	142	137	130	123	116
slsgr m/90	HE	5	5	5	5	5	5
kulsgr m/90	HE-VT*	5	5	5	5	5	5

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile Mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive Mass (TNT equivalent) (g)	Ricochet
							0%	50%	100%
slpprj m/90	APFSDS	1,465	0.25	N/A	N/A	N/A	78°	80°	81°
slsgr m/90	HE	988	0.96	0	0.1	174.4	79°	80°	81°
kulsgr m/90	HE-VT*	1,015	0.88	0	0.1	190.8	79°	80°	81°

Ammo racks

Ammo racks of the Strf 9040 BILL

Full ammo	1st rack empty	2nd rack empty	3rd rack empty	4th rack empty	5th rack empty	6th rack empty	Visual discrepancy
234	186 (+48)	138 (+96)	90 (+144)	42 (+192)	24 (+210)	0 (+234)	No

Additional armament

Rbs 56 ATGM

Ammunition8 rounds

Belt capacity2 rounds

Fire rate145 shots/min

Fire on the moveup to 6 km/h

BGM-71A TOW missile
Capacity (Belt)	Vertical	Horizontal	Stabilizer
8 (2)	-19°/+29°	N/A	N/A

Ammunition

Penetration statistics
Ammunition	Type of warhead	Penetration @ 0° Angle of Attack (mm)
		10 m	100 m	500 m	1,000 m	1,500 m	2,000 m
RB 56 BILL II	ATGM	510	510	510	510	510	510

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile Mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive Mass (TNT equivalent) (g)	Ricochet
							0%	50%	100%
RB 56 BILL II	ATGM	250	10.9	0.05	0.1	2,720	80°	82°	90°

Ammo racks

Ammo racks of the Strf 9040 BILL

Full ammo	Visual discrepancy
8	No

Note:

• Missiles are modeled individually and disappear after having been launched.
• It is not possible to select how many missiles to bring into battle.

Machine guns

7.62 mm ksp 39 C machine gun (coaxial)

Ammunition1 500 rounds

Belt capacity250 rounds

Reload8.0 s

Fire rate649 shots/min

7.62 mm ksp 39 C
Mount	Capacity (Belt)	Fire rate	Vertical	Horizontal
Coaxial	4,000 (250)	500	N/A	N/A

Usage in battles

Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).

Pros and cons

Pros:

• Lovely mobility
• Access to deadly top attack missiles, able to destroy enemy tanks hiding behind cover
• 40 mm APFSDS shreds tanks from the sides
• 40 mm HE-VT shells are very effective against enemy air vehicles
• Access to generation 2 thermals for both gunner and commander - Along with the CV90105 TML, the BILL is the only Strf 90 that has CITV
• Access to the scouting mechanic
• Wide FOV for the gunner
• Able to fire missiles on the move (albeit at the very slow speed of 5 km/h)
• Missile launchers do not explode when hit by enemy APFSDS shells
• Missile penetrates over 500 mm of steel - no roof of any armoured vehicle can withstand this

Cons:

• Tanks with ERA on top of the turret (especially Russian tanks have those) renders the missiles less effective
• Does not have access to the improved Slpprj m/01 APFSDS shell with 170 mm of penetration the Strf 9040C has
• Weak armour
• Two-plane stabilizer disengages at speeds over 10 km/h - when disengaging the stabilizer, the gun has the nasty tendency to swing violently up- or downwards
• It takes time to deploy the missile launcher before the missiles can be fired
• The 40 mm gun chews through ammo very quickly, and replenishing the first stage ammo rack takes time
• Only 6 missiles
• Missiles are sensitive to APS - tanks like the AMX-30B2 BRENUS and T-90A can deflect the missile
• Aiming too high above the enemy vehicle ensures the missile does next to no damage to said enemy vehicle
• Missiles are not useful against helicopters
• Missiles are less effective against tanks with lots of space between crew, ammo and modules (like the M1A1 and M1A2 Abrams)
• Low zoom in the gunsight

History

Describe the history of the creation and combat usage of the vehicle in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).

Media

Skins

• Skins and camouflages for the Strf 9040 BILL from live.warthunder.com.

Videos

The Strf 9056 Light Tank - Orangefan

Strf 9056 - Good News From Above - Napalmratte

The Shooting Range #204 - Metal Beasts section at 00:32 discusses the Strf 9056.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

• reference to the series of the vehicles;
• links to approximate analogues of other nations and research trees.

External links

Paste links to sources and external resources, such as:

• topic on the official game forum;
• other literature.