Editing Spinning wheel (section)

====Double drive====
[[File:Double drive wheel.JPG|thumb|left|A double drive wheel]]

The double drive wheel is named after its drive band, which goes around the spinning wheel twice. The drive band turns the flyer, which is the horse-shoe shaped piece of wood surrounding the [[bobbin]], as well as the bobbin. Due to a difference in the size of the whorls (the round pieces or pulleys around which the drive band runs) the bobbin whorl, which has a smaller radius than the flyer whorl, turns slightly faster. Thus both the flyer and bobbin rotate to twist the yarn, and the difference in speed winds the yarn onto the bobbin when the spinner lets up tension on the newly spun yarn, and spins the bobbin and flyer together to add spin to the yarn when the spinner keeps the new yarn under tension (in this case, the drive band will slip slightly in the groove in the bobbin, flyer whorl, or both).  Generally the speed difference or "ratio" is adjusted by the size of the whorls and the tension of the drive band.<ref>{{Cite web |date=2014-09-03 |title=Let's Talk About Tension |url=https://schachtspindle.com/lets-talk-about-tension/ |access-date=2022-07-15 |website=Schacht Spindle Company |language=en-US}}</ref>

The drive band on the double drive wheel is generally made from a non-stretch cotton or hemp yarn or twine.<ref>{{Cite web |date=2023-02-17 |title=Spinning Wheel Basics: Know Your Drive Band |url=https://spinoffmagazine.com/drive-band-basics-for-antique-wheels/ |access-date=2023-01-14 |website=SpinOff Magazine |language=en-US}}</ref>