Engineering:Unditching roller

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Short description: Military vehicle support device
Photo of an M3 Scout Car from the front, outdoors on a city street with other military vehicles. It has a wide cylindrical object mounted on front beneath the radiator grill. A coil of barbed wire and coiled rope are also mounted.
An M3 Scout Car showing the wide unditching roller at the front

An unditching roller is a device fitted to the front of military vehicles, such as the M3 Scout Car[1] and the M3 half-track, for the purpose of preventing the vehicle from getting stuck in an obstacle, such as a ditch.[2] The C4 based Citroën P17C Kégresse from 1931 also had such a roller.[3]

Upon entering a ditch, the roller prevents the front of the vehicle from digging into the opposite face of the ditch; instead, the roller acts as a wide wheel enabling the front to climb out of the ditch more easily.[2]

  • Variants of unditching rollers
  • 1931 C4 based Citroën P17C Kégresse
    1931 C4 based Citroën P17C Kégresse
  • Drawing of Unic TU-1 tractor, side view.
    Unic TU-1 Light Artillery Tractor
  • Photo of Unic P107 museum specimen from front-left. The wide cylindrical roller is mounted at front below the radiator grill.
    Unic P107
  • Black-and-white photo of 38M Template:Langr truck from side, showing it driving over a rise.
    38M Template:Langr]]

See also

References

  1. ↑ "M3A1 Scout Car". https://heritageflight.org/vehicle/m3a1-scout-car/?doing_wp_cron=1643142497.5329349040985107421875. 
  2. ↑ 2.0 2.1 Zaloga 2018, p. 44.
  3. ↑ Ellis 1970, p. 161.

Bibliography

  • Ellis, Chris (1970). Military Transport of World War I: including Vintage Vehicles and Post War Models. Poole: Blandford Press. ISBN 0-7137-0701-1. 
  • Zaloga, Steven J. (2006). Early US Armor: Armored Cars 1915–40. New Vanguard 254. Osprey Publishing. ISBN 9781472825148. 
  • Media related to Unditching roller at Wikimedia Commons



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