- In single drive, your drive band is directly contacting either the flyer or the bobbin,
- In double drive, your drive band is contacting both flyer and bobbin
- In single drive, the difference in rotational speeds of the bobbin and flyer is caused by a brake band on one or the other.
- In double drive, the difference in rotational speeds is dictated by the difference in diameter of bobbin and flyer pulleys.
![Single Drive Flyer Lead Wheel](http://fullyfleeced.com/wp-content/uploads/2013/11/SingleDriveFlyerLead-199x300.jpg)
Single Drive
- Flyer –lead: driveband moves the flyer, brakeband on the bobbin
- Bobbin-lead: driveband moves the bobbin, brakeband on the flyer
![Double Drive wheel, bentwood Flyer](http://fullyfleeced.com/wp-content/uploads/2013/11/DoubleDriveFlyer2-300x216.jpg)
Double Drive
- Driveband makes two loops, one around flyer pulley, and one around bobbin pulley.
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