R/C Tank Combat

Tank Destroyer #T026


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Type: SU-100 Armament: ???
Built: Winter 2004 Armor: ???
Builder: Will Montgomery Rating: 40/4
Status: Operational Battles: 62
Owner: Will Montgomery Points Earned: 159,690
Call Sign: ??? Points Given: 78,500
  • Advanced Roller Chain Tracks
  • EV Warrior Drive System
  • Gun Pivots and Elevates

  • Click Photo For Enlargement (329 Kb)
    Winter 2004: The SU-100 begins to take shape from the ground up, with a very sturdy welded steel chassis. As Will's 3rd tank built from scratch, the SU-100 will benefit from lots of lessons learned, starting with a strong frame on which everything is built.

    Each of the road-wheels pivot, with a spring-suspension that holds up the weight of the tank and can take the shock of going over obstacles. When fully loaded, the tank will weight close to 150 lbs.

    Click Photo For Enlargement (346 Kb)

    Click Photo For Enlargement (64 Kb)
    The suspension springs are mounted inside of the hull, running along each side. This keeps a lot of the dirt and grime out of them, although periodic cleaning will still be needed. The axle and suspension arms are welded steel (thanks to Frank's 2003 Xmas present) and should last a long, long time.

    Road wheels are made from 3/4" plywood that has been glued together, rough cut on the bandsaw and then trimmed to shape on the lathe. The bulk of the wheel rides on top of the large attachment chain links, with a flange riding along the side to keep the chain on track. Such road wheels are inexpensive, relatively easy to make and have stood up well on the battlefield.

    Click Photo For Enlargement (344 Kb)

    Click Photo For Enlargement (341 Kb)
    Surplus wheelchair motors were installed to push the beast across the field. The integrated gear-drive makes them easy to install, with a V-belt used to drive the tracks. Unfortunately, during the field tests of the SU-100, one of the surplus motors failed and had to be replaced.

    A pair of EV Warriors were installed to replace the wheel chair motors, along with a 9:1 two stage chain gear reduction. The same drive system has been used successfully in other Tri-Pact vehicles and is now the preferred solution. Since the SU-100 uses attachment chain tracks that don't provide any slippage, an additional drive system stage using V-belt pulleys is used. This allows the system to slip if the tracks are locked up, thereby saving the motors from harm.

    Click Photo For Enlargement (368 Kb)

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    June 2004: During the Maryland Massacre, the SU-100 is on the other side of the pine tree, keeping the Tiger from moving one way or the other. Such face-offs are common when two individual tanks meet somewhere on the field, but they are usually short-lived as other tanks starting moving towards that location.

    A classic stand-off when two tank destroyers meet head-on. Without rotating turrets, the two need to either patiently wait for a high-angle side shot or attempt a J-turn attack to get on the side of the other tank before they can pivot and shoot. In this case, the SU-100's full-skid turning would probably win (the Hetzer only has half-skid turning).

    Click Photo For Enlargement (109 Kb)

    Click Photo For Enlargement (335 Kb)
    July 2004: After the first battle with the SU-100, it was determined that a more reliable elevate, rotate and magazine feed system was needed. Here is shown the new magazine system that uses a roller-based feeding mechanism with an agitated hopper. Both the roller feed and the agitator spin each time the gun is fired. The hopper (black object on right) allows paintballs to be loaded quickly and ensures that paintballs fall into the roller feed (clear plastic object below hopper). The roller feed pushes paintballs up towards the gun through the coiled hose (white object in center) and the copper elbow into the marker. Although it looks complicated, it works well and should provide a steady stream of paintballs.

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