R/C Tank Combat

Tank #T078

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Type: Marder III Ausf N Armament: 75mm
Built: Spring 2011 Armor: 20mm
Builder: Neil Rochford Rating: 40/2
Status: Operational Battles: 6
Owner: Neil Rochford Points Earned: 15,000
Call Sign: Vandal Surprise Points Given: 9,500
Notes:
 
  • 1/3 Scale ride-in vehicle


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    It could be the fact that this Marder III has no radio controller to loose power or pickup interference half way through a battle , or it could be the fact that the driver can see the path that the paintballs are flying. it could be the fact that the driver of this tank will not suffer body shots from other players. Or it could just be that a ride in tank is extra fun to play with than an rc tank. As at time of writing (August 2011 (just before the great flood)) To78 remains unbattle tested.

    the very simple shape of a Marder hull is formed out of 1/2 ply. all the joints are finger jointed/ screwed and glued. Eventually timber blocks will be screwed and glued to secure every joint. 7/8" steel bar form the axles.
     

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    Nylon 10" wheels. buying wheels saves considerable time.

    I wanted to copy the real suspension for this tank but i had to consider weight distribution, as not very much weight will be on the front road wheels and 13 (and a bit) stone of bloke will be on the back wheel. These swing arms were a solution, made from 30x15mm tube 1.5mm thick and 12mm rods drilled through and welded. Update :- after extensive testing these will eventually need replacing with something sturdier .
     

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    Each wheel has 2no 12mm ID / 32mm OD bearings. The bearings gives this tank a very minimal rolling resistance.

    I found a stepper drill that can drill a hole 32mm. this had to be done with a hand drill because a 10" wheel wont fit under my pillar drill.
     

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    when fitted each wheel spins freely after a little flick for as long as you can be bothered to watch it turn.

    The idler wheels are made by cutting plywood disks that each take 2No bearings,
     

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    An angle of 15 degrees was machined forming a leading edge to provide alignment for the track guides.

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