Single Drive vs. Double Drive

• 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:  driveband moves the flyer, brakeband on the bobbin
• Bobbin-lead: driveband moves the bobbin, brakeband on the flyer

Double Drive

• Driveband makes two loops, one around flyer pulley, and one around bobbin pulley.