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Unread 19-01-2007, 08:35
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VEX Robotics Engineer
AKA: Arthur Dutra IV; NERD #18
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Re: pic: 6 Wheel drive Rh side

Quote:
Originally Posted by NOV8R View Post
What you can't see is an idler hidden by the top frame rail that wraps the chain more around the top in addition to what you see of the bottom of the sprocket . Almost 50 percent of the sprocket's teeth are in contact with the chain. The final drive ratio is 22:1 and it can push rather nicely.
Judging from the picture, there is only about 45 degrees worth of chain wrap around that center sprocket. At the very least, you should always have at least 180 degrees of chain wrap around a sprocket. In a high torque application such as a drivetrain, you're much more likely to skip teeth on the sprocket if you do not have adequate wrap of the sprocket.

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Robowranglers Team 148 | GUS Robotics Team 228 (Alumni) | Rho Beta Epsilon (Alumni) | @arthurdutra

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