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Re: pic: 2 speed dogshifter
See attached spreadsheet.
I used the numbers Arefin gave, and just plugged them in quick for some speed estimates. Using a 4" dia wheel, with a 24 tooth sprocket (the 229-2005 layout - fairly average final gearing) I have this guy moving at ~13 fps & ~3 fps
You can plug in similar numbers, and see what you come up with.
Ary is dead on.
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In the interest of full disclosure: I work for VEX Robotics a subsidiary of Innovation First International (IFI) Crown Supplier & Proud Supporter of FIRST
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