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Originally Posted by IceStorm
What size/type 8020 did you use?
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Standard 1" x 1"; if you need the exact part number I can dig it up.
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How do you mount the sprockets to the end of the 8020?
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We bolted a piece of 3/8" lexan to the end of each 8020. The shaft for the sprocket goes through bearings which are mounted to the lexan. We used T-bolts to attach the lexan to the 8020, so we could slide the lexan (and therefore the shaft) to take up any chain slack.