R/C Tank Combat

Tank #T067

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Type: PzKpfw VI-I Tiger Armament: 88mm
Built: Q1 2009 Armor: 100mm
Builder: Ben Holko Rating: 40/4
Status: Rolling Chassis Battles: 0
Owner: Ben Holko Points Earned: 0
Call Sign: Plan B Points Given: 0
Notes:
 
  • Victor 883 ESCs
  • M01 Scooter Motors
  • Attachment Chain Track
  • Aluminium Hull
  • Christie Suspension
  • First lithium powered tank


  • Click Photo For Enlargement (192 Kb)
     
    The chassis is made of 1" square aluminium box tube, using the "Connect-IT" plastic right-angle joiner system. Making this base frame for the lower hull only took a couple of hours using this method

    Suspension is a Christie system, with 16 independant swingarms and coil springs. The swingarms ride on 5/16" bolts, axles are 3/8". The swingarms pivot on bronze bushings with high-tensile bolts.
     

    Click Photo For Enlargement (201 Kb)


    Click Photo For Enlargement (226 Kb)
     
    Flanged bronze bushings for the swing-arms to pivot on

    One bushing gets seated in a washer, and then one on each side of the swingarm. I drilled the swingarm with the appropriate size bit so its an interference fit, pressed in with the help of the vice
     

    Click Photo For Enlargement (132 Kb)


    Click Photo For Enlargement (164 Kb)
     
    Finished swing-arm ready for mounting, thats a locknut adjusted so that swingarm pivots freely on the bolt - the bolt gets done up tight to the chassis

    Another view
     

    Click Photo For Enlargement (150 Kb)


    Click Photo For Enlargement (173 Kb)
     
    Finished and mounted arms with coil springs

    Bogie wheels are 6x1.5" steel with solid rubber tyres, here we see the suspension travel, which gives about 1.5 - 2" of max travel. Its on the firmer side; having really soft springs makes it look cool to be able to drive over stuff and not have the hull move, it also results in "lurching" of the tank under acceleration, which doesn't look cool. I think the springs I used give a good compromise between travel and stability.
     

    Click Photo For Enlargement (235 Kb)


    Click Photo For Enlargement (220 Kb)
     
    Here you can see the pillow-block bearings that the drive axles ride in. Drive shafts are 5/8" keyed steel. Pillow block bearings are heavy, I would have avoided them if I could, but anyone who has built a Tiger E will know there is limited space in the front for the drive setup, so I couldn't easily accomodate flange bearings and have a proper drive-sprocket location appearance.

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