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Originally Posted by Validius
For a small team like ours the pre made drivetrain was essential. It was solid and effective. There was only one problem: It was too fast. I called around for alrernate sprockets for the chain and quickly found that the kit ones were of a custom design and there was no way i could aquire any without making them myself.
Sure i could slow the bot down in software but that would sacrafice torque and would require a nasty algorithm so i could still output the necessary horsepower when steering.
I would *really* like to see this year's drivetrain use more standard parts.
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Why not use a larger sprocket on the wheel itself? (Or did you have a clearance issue with the outside diameter?) Other options include adding a second shaft with a large sprocket (for a large ratio) somewhere out of the way, and then chaining that to your wheels with a separate length of chain. In any event, the kit sprockets have a standard #35 ANSI power transmission chain tooth form; it's only the bore that is custom.