275:, producing 250 horsepower (190 kW). The four rear wheels were powered and were equipped with brakes. The two front wheels were steerable when driving without tracks. Since the vehicle weighted only 11 tons, it could go as fast as 56 km/h on its tracks and 85 km/h on its wheels. Another advantage was that the external suspension components saved a lot of space inside this small vehicle. The crew consisted of the tank commander, driver, and gunner. The rear wheels were attached to bogies and the construction was generally similar to commercial 3-axle trucks of the period. As a tank, it was not ideal. However, its simple and more promising design was much better received than Christie’s designs.
293:
and thus there was no need for the complexity and higher cost associated with convertible vehicles. Furthermore, the heavy machine gun was determined insufficient for the role. The ongoing war in Europe at the time proved that, in order for a vehicle to be successful, it needed a proper cannon. In
October 1939, despite its potential, the Mechanized Cavalry Board recommended further development and test of the T7 combat car program, and all other such convertible vehicles, be canceled. Thus ended the last wheel-tracked combat vehicle development for the U.S. Army.
268:
Army had already tested and dismissed
Christie’s all-steel road-wheel design. In order to avoid that failure, the combat car was designed using three big road-wheels with rubber tires that also served as rollers. All six wheels were 38×7-inch (97×18 cm) pneumatic tires with bullet resistant tubes and were fitted with metal disc supports to help reduce the chance of bullets or shrapnel piercing the tires, potentially disabling the tank.
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242:. After the T4 combat car had been tested, the Ordnance Committee recommended working on a road-track convertible tank design. The T6 combat car design was cancelled but in November 1936 the Chief of Cavalry ordered that work continue on designing a convertible tank. Designed and built at the Rock Island Arsenal between 1937 and 1938, the T7 combat car was based on the
292:
in 1939, where the cavalrymen liked it. However, in
October 1939, the cavalry branch formed new requirements for their combat vehicles which specified regular tracked (not combined) suspension. The reason for that decision was that the tracks were already available in reasonable quantity and quality
267:
Since the vehicle was – like the cavalry – expected to drive as much or more on the roads as off, the design featured a wheel-track layout capable of both modes. Given the limitations of that era, it was expected the tires would have greater durability over roads than the tracks themselves. The US
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in August 1938 for testing. While it showed good speed and performance, cavalry branch representatives were not significantly impressed. Tests were delayed until 1939, but they were reasonably successful. The vehicle even participated in the First Army maneuvers at
246:
but with an extended chassis and a convertible suspension – the ability to travel using wheels or tracks. Theoretically, it was more versatile than a conventional tank, having the ability to move with and without tracks on roads, much like the
218:. It could run on rubber-tired wheels on roads or mount tracks for cross-country use. Although adequate in some areas, it lacked armament compared to contemporary vehicles and the project was cancelled after only one was built.
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which defined "tanks" as the responsibility of the infantry, the phrase "combat car" was used as a legal formality. The T5 combat car had been built on similar lines to the infantry's T2 light tank, leading to the
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decided to modernize and needed a fully armored vehicle, capable of keeping up with the cavalry and of fulfilling regular combat duties. Prohibited from developing tanks by the
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British and
American tanks of World War Two : the complete illustrated history of British, American and Commonwealth tanks, 1939-1945
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259:. However, this armament was useful only against infantry, and was inadequate for use against other tanks of the period.
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designed tanks. The main gun of the project was traditional – one .50 cal (12.7 mm)
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56 km/h (35 mph) on tracks, 85 km/h (53 mph) on wheels
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The only prototype T7 combat car (No. W40223) was shipped to
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List of U.S. military vehicles by supply catalog designation
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heavy machine gun and three .30 caliber (7.62 mm)
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The vehicle was powered by a 7-cylinder radial engine
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313:List of U.S. military vehicles by model number
1185:Trial and research tanks of the United States
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443:Stuart, A History of the American Light Tank
1130:List of interwar armoured fighting vehicles
445:. Vol. 1. Novato, CA: Presidio Press.
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538:
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511:T7 Combat Car Lightweight wheel-track tank
338:British and American Tanks of World War II
18:
757:Vickers-Carden-Loyd light amphibious tank
479:Chamberlain, Peter; Ellis, Chris (2000).
422:Chamberlain, Peter; Ellis, Chris (2002).
483:(Reprinted ed.). London: Cassell.
404:The same loophole was used for Japan's
397:
365:Chamberlain & Ellis (2002), p. 203.
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7:
1165:Interwar tanks of the United States
95:5.12 m (16 ft 10 in)
1175:Light tanks of the interwar period
191:Coil spring-based wheel and track.
14:
464:. Oxford, UK: Osprey Publishing.
111:2.46 m (8 ft 1 in)
103:2.63 m (8 ft 8 in)
1170:Light tanks of the United States
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1115:
1114:
29:
408:, a light tank for the cavalry.
379:Ogorkiewicz (2015), pp. 84–85.
210:was a prototype United States
1:
462:Tanks: 100 Years of Evolution
460:Ogorkiewicz, Richard (2015).
424:Tanks of the World, 1915–1945
547:Tanks of the interwar period
426:. London: Cassell & Co.
235:National Defense Act of 1920
1201:
406:Type 92 heavy armoured car
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183:250 hp (190 kW)
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48:Place of origin
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1102:Vickers A1E1 Independent
441:Hunnicutt, R.P. (1992).
356:Hunnicutt (1992), p. 88.
336:Chamberlain & Ellis
285:Aberdeen Proving Grounds
505:Tank T7 Combat Car, USA
226:In November 1936, the
1120:Interwar period tanks
290:Plattsburgh, New York
811:Vickers medium Mk II
651:Disston Tractor Tank
1141:Tank classification
1137:History of the tank
806:Vickers medium Mk I
73:Rock Island Arsenal
671:Light tanks Mk I–V
257:M1919 machine guns
169:medium machine gun
56:Production history
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681:Light tank Mk VII
452:978-0-8914-1462-9
273:Continental R-670
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179:Continental R-670
146:0.5 in (12.7 mm)
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1135:Background:
1134:
1051:
972:Kolohousenka
967:Grosstraktor
856:Cruiser Mk I
796:Type 89 I-Go
763:Vickers T-15
593:T-32 (Ĺ -I-D)
507:(in Russian)
480:
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423:
416:Bibliography
400:
361:
340:(1969) p. 84
337:
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282:
270:
266:
225:
207:
206:
69:Manufacturer
918:super-heavy
641:38M Toldi I
568:Carden Loyd
263:Description
253:M2 Browning
222:Development
150:machine gun
148:M2 Browning
1159:Categories
1017:Ĺ koda MU-4
946:Prototypes
387:References
212:light tank
188:Suspension
42:Light tank
16:Light tank
1047:T2 medium
1037:ST vz. 39
1012:PZInĹĽ 130
899:Matilda I
871:SOMUA S35
820:Cavalry,
716:Panzer II
696:LT vz. 38
691:LT vz. 35
686:LT vz. 34
656:Fiat 3000
555:Tankettes
228:US Army's
156:Secondary
64:1937–1938
881:Infantry
711:Panzer I
297:See also
249:Christie
158:armament
142:armament
61:Designed
1097:Verdeja
931:Char B1
926:Char 2C
851:BT tank
822:cruiser
781:Char D2
646:Char D1
613:Type 94
608:Type 92
303:SCR-189
87:11 tons
962:FCM F1
889:FCM 36
846:AMR 35
841:AMR 33
836:AMC 35
831:AMC 34
824:, fast
773:Medium
487:
468:
449:
430:
181:Radial
175:Engine
108:Height
92:Length
1067:T-100
914:Heavy
628:Light
578:L3/35
573:L3/33
563:AH-IV
392:Notes
324:Notes
130:Armor
100:Width
1062:T-42
1057:T-19
957:10TP
936:T-35
904:T-26
791:T-28
786:T-24
741:T-38
736:T-37
731:T-26
726:T-18
666:L-60
588:T-27
485:ISBN
466:ISBN
447:ISBN
428:ISBN
279:Test
140:Main
116:Crew
84:Mass
38:Type
1022:SMK
721:R35
661:H35
636:7TP
603:TKS
583:R-1
1161::
1143:,
1139:,
916:,
370:^
345:^
948:,
539:e
532:t
525:v
493:.
474:.
455:.
436:.
119:4
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