RBT-5

RBT-5

RBT-5

USSR

I Rank

Battle rating:

AB	RB	SB
1.3	1.3	1.3

Class:

PREMIUM

Light tank

Purchase:Bundle or Gift

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Description

The RBT-5 is a gift rank I Soviet light tank with a battle rating of 1.3 (AB/RB/SB). It was available as a prize during the 2016 "Thunder League" eSports tournament as a giveaway prize for watching the Twitch stream, later every Dog-Tag owner who voted for Team Dislike earned one due to the "Champion" prize. It is currently available through the Gaijin store for individual sale or through the 'Project-X' trophy.

The RBT-5 is a regular BT-5 with the mounts to hold two 250 kg TT-250 torpedoes modified as rockets. The large calibre rockets prove hard to aim, but a real dealer to anything it hits.

This tank is quite unique. It has virtually no armour, weights only 11,5 tons and has a massive 400 HP engine (442 HP fully upgraded), giving it up to 38 HP/Ton ratio. This paired with excellent Christie suspension allows it to drive like a race car among tanks. Gun is an adequate 45mm 20-K cannon with decent penetration and quick reload.

Do remember - the RBT-5's two rockets are quite apart from each other, and that should be taken into account when aiming. The first rocket to be fired is the right one.

General info

Survivability and armour

Armour type:

• Rolled homogeneous armour

Armour	Front	Sides	Rear	Roof
Hull	13 mm (62°) Front glacis 20 mm (18°) Driver port 30 mm (62°) Lower glacis 40 mm (13°) Plate joint	15 mm (1°)	13 mm (0-59°)	10 mm
Turret	20 mm (11-43°) Gun mantlet 15 mm Turret front	15 + 15 mm	15 mm	10 mm

Notes

• Tracks and suspension wheel are both 15 mm thick.
• Rocket mounts provide additional spaced armour of 15 mm on the turret sides.

Mobility

Game Mode	Max Speed (km/h)		Weight (tons)	Engine power (horsepower)		Power-to-weight ratio (hp/ton)
	Forward	Reverse		Stock	Upgraded	Stock	Upgraded
Arcade	57	12	12.1	566	763	46.78	63.06
Realistic	51	10		323	400	26.69	33.06

Armaments

Main armament

45 mm 20-K
Capacity			Vertical guidance	Horizontal guidance	Stabilizer
86			-8°/+25°	±180°	N/A
Turret rotation speed (°/s)
Mode	Stock	Upgraded	Prior + Full crew	Prior + Expert qualif.	Prior + Ace qualif.
Arcade	9.50	13.20	_.__	_.__	_.__
Realistic	9.50	11.20	_.__	_.__	_.__
Reloading rate (seconds)
Stock	Prior + Full crew	Prior + Expert qualif.	Prior + Ace qualif.
3.80	_.__	_.__	_.__

Ammunition

Penetration statistics
Ammunition	Type of warhead	Penetration in mm @ 90°
		10m	100m	500m	1000m	1500m	2000m
BR-240	APHEBC	69	68	59	50	42	35
BR-240SP	AP	73	71	62	52	44	37

Shell details
Ammunition	Type of warhead	Velocity in m/s	Projectile Mass in kg	Fuse delay in m:	Fuse sensitivity in mm:	Explosive Mass in g (TNT equivalent):	Normalization At 30° from horizontal:	Ricochet:
								0%	50%	100%
BR-240	APHEBC	760	1.4	1.2	15	32.3	+4°	48°	63°	71°
BR-240SP	AP	757	1.4	N/A	N/A	N/A	-1°	47°	60°	65°

Ammo racks

Ammo racks of the BT-5

Full ammo	1st rack empty	2nd rack empty	3rd rack empty	4th rack empty	5th rack empty	6th rack empty	Visual discrepancy
86	72 (+14)	57 (+29)	43 (+43)	29 (+57)	15 (+71)	1 (+85)	No

Turret empty: 29 (+57)

Additional armament

420 mm TT-250 tank torpedo
Capacity			Vertical guidance	Flight speed (m/s)	Range (m)
2			+9°/+50°	260	6,500

Machine guns

7.62 mm DT
Coaxial mount
Capacity (Belt capacity)				Fire rate (shots/minute)	Vertical guidance	Horizontal guidance
1,890 (63)				600	N/A	N/A

Usage in battles

Best tactics is probably however to not charge right into the combat, but wait a while how the battle develops - observe where and how many enemy tanks go, maybe fire a few shots from the distance. Use your great mobility to get to the best positions. And then use its awesome speed to charge at lonely opponents, which at close range have no chance of keeping their guns pointed at you. Keep in mind that charging into more than 1 opponent is usually a quick end, as it is very hard to not get hit from either of them at the same time. There is no armour on BT-5 to stop anything other than machinegun fire. Finally, try to avoid AA vehicles, as they will have no problem targeting and destroying you, even from the distance.

Pros and cons

Pros:

• 45mm 20-K gun offers great penetration
• 20-K gun offers a good rate of fire
• The BR-240 APHEBC rounds deals the best damage and spalling at its rank, allowing for impressive post-penetration damage
• One of the fastest tanks in the game, the best acceleration and overall mobility
• Front armour, although very thin, may bounce shells thanks to the decent sloping of the glacis
• Sometimes used in high rank matches as scout/distraction/intruder - spawning does not account to a total of 3 spawns
• Excellent turning radius, allows the vehicle exploit enemy vehicles' turret traverse speed
• Very powerful rockets, can even instantly destroy a Maus, allowing the RBT-5 to handle even formidable foes

Cons:

• Equipped with only 2 rockets
• Rockets are set at a fixed angle which further complicates aiming, does not allow for zeroing targets
• Armour can only cope with rifle caliber rounds, could also deflect a few heavy machine gun rounds
• Very vulnerable to quick-firing automatic cannons like the German 20mm cannons or the TShN
• Terrible crew arrangement, a well-placed, penetrating shot will automatically take out the crew
• Rockets may overshoot at close range, due to the affixed nature of the mounting

History

Development

The BT, or Bystrokhodny tank, was the forerunner to the T-34. The tank's name translates to "high-speed tank" and it lived up to that expectation. The BT series of tank's origin lays with an American Racing enthusiast named Walter Christie, also a prolific automotive designer. When the U.S. Army Ordnance Bureau repeatedly declined to produce Christie's designs, he becomes so frustrated with them for turning their interests away from a tracked vehicle able to go 60 miles per hour, so he turned to other countries such as Great Britain, Poland, and the Soviet Union. The Soviet's were eager to purchase his designs and were able to receive two M1931 turret-less examples that were labeled as "agricultural tractors", as well as the license to build more of their own variants. The Soviets quickly produced working prototypes of Christie's tanks and made various changes and improvements at the KhPZ factory in Kharkov. The development of the Christie suspension on the tank would become the BT-2 light tank. Further development would improve the BT-2 design as the BT-5, released sometime in 1935.

Design

The Christie design was based on the concept of "convertible tanks" which was to reduce the wear of tank tracks as they were quite unreliable at the time. The tracks could be removed and instead the vehicle would run on a chain drive to allow the tank to reach high-speed on roads with just the wheels that could be steered by pivoting the front road wheels. The conversion took about 30 minutes to complete. The Soviets saw the "convertible tank" feature of the Christie design to be of little use due to the lack of paved road in the Soviet Union, which was necessary for the use of the wheel conversion. The conversion also added unnecessary complexity and weight, so this was removed from later Soviet tank designs.

The primary changes from the BT-2 to the BT-5 was its new larger cylindrical shaped turret and more powerful 45 mm 20-K cannon. The new turret was capable of housing radio equipment and gave crew more freedom to move around. The BT-5 was slightly heavier then the BT-2, but the armour was left unchanged. The 12 cylinder M5 power-plant that was based off an American Liberty aircraft engine that was adapted for use with the BT series. It allowed the tank to travel up to impressive speeds. Several variants of the BT-5 were constructed that included features such as flamethrowers, 76.2mm cannon, and a snorkel to aid in fording waterways. Projects in extending the BT's role in other jobs also took place, such as the RBT-5, which is a rocket launcher artillery variant that mounts two large 420 mm tank torpedoes on the turret, but this did not past prototypes. During its development, it was also slowly replaced by the improved BT-7 model being produced form 1935 onward. A reported 1,884 BT-5 light tanks were produced from 1932 to 1941.

Combat usage

The BT tanks were meant to be a cavalry tank, and at the time of their introduction they were considered some of the finest tanks against other countries' tanks. They had great mobility of all available tanks, and its 45 mm gun could perform very well in combat. The only drawbacks of the design was its light armour and its gasoline engine, which caused the design to be rather flammable to improvised incendiary weapons. The BT-5's most notable combat service came against the Japanese at Khalkhin Gol. The tactics of Soviet Marshal Georgi Zhukov and the performance of his BT-5 and BT-7 tanks led to a decisive victory. It was during this battle that the BT tendency to catch fire was found, but its performance was positive against the inferior Japanese armoured forces.

During the Spanish civil war, a force of BT-5s fought with the Republican forces and performed quite well against its inferior German and Italian opponents, whom deployed lightly armoured tanks with machine guns as their armament. With the outbreak of World War II, the BT-5 was deployed against Poland and aided in the defense of Russia from the invading German army in Operation Barbarossa, though was of little use against the better German Panzer IIIs and Panzer IVs. The BT-5 saw service through to the end of the war, where it participated alongside BT-7s and more modern Soviet tanks against Japanese-controlled Manchuria in August 1945.

Media

Skins and camouflages for the BT-5 mod. 1933 from live.warthunder

Uncommented test drive
"RBT-5 Unique Premium Test drive!"
by B.F.B Reptile ITA

Combat encounter M60 vs RBT-5
"War Thunder RBT-5 on his game"
by Tigernator

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

• Thunder League Tournament