R/C Tank Combat

Tank #T078

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A 1mm galvanized sheet from an old washing machine provides the material for a steel shield to protect the plywood from wearing against the track guides.

Rough cut with a 9" disk cutter. Note to self :- always mark a center hole first.
 

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Taking off a little at a time each disk is rounded on a jig at the same distance from the bench grinder.

A local engineering firm made me my drive disks. 10" diameter mild steel 3mm thick. these form the outer section of the wheel that encase a plywood core.
 

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In pairs and with the plywood spacers, the disks were keyed ready to be fitted on the drive shaft.

Thanks to my good friend Mr Arundle I have treadmill belt. I was given a belt that was a little worn but still intact. A one inch strip helped me come to the conclusion that i didnt need to make a joint. All the wheel positions were worked out in real space. A single track pad helps me get a feel for the track.
 

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In order to make every track pad identical I made a jig. 2No 4mm ID bearings were fitted in to a track pad pattern.

Then each track pad was temporarily screwed to the pattern and then drilled right through.
 

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The inner track pads are 1mm thick 3x6" galvanized plates, Bent and formed to fit over the 3x5" track pads.

additional holes from the jig leave starter holes in the track pad for locating the inner track pad position.
 

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