One of the most common questions new spinners ask is why some spindles seem to keep going forever while others slow down almost immediately. The answer comes down to spindle momentum — and Turkish drop spindles are particularly well designed to maintain it.
This guide explains the physics behind spindle spin time and why Turkish drop spindles spin longer than many other spindle styles.
What Is Spindle Momentum?
Momentum in a spinning spindle is rotational inertia — the tendency of a spinning object to keep spinning. A heavier spindle, or one with weight distributed further from the center, carries more rotational momentum and keeps spinning longer after each flick. This is the same principle that makes a heavy flywheel keep turning longer than a light one.
Why Turkish Drop Spindles Spin Longer
Turkish drop spindles have their weight distributed across the crossed arms, which sit low on the shaft. This low weight placement increases rotational stability and extends spin time compared to spindles where the weight is concentrated near the top. The result is a longer, steadier spin that gives you more time to draft fiber before the spindle needs to be re-spun.
Learn more about why Turkish drop spindles are perfect for beginners — longer spin time is one of the main reasons.
How the Turtle Affects Momentum
As yarn builds on the spindle arms, the growing cop adds weight and changes the weight distribution. This is why spindles often feel more stable and spin longer as the turtle grows. Learn more about how the turtle forms and why the winding pattern matters.
Spindle Size and Momentum
Heavier spindles carry more momentum. See my guide on Turkish drop spindle sizes explained to understand how Mini, Medium, and Mega spindles differ in weight and spin time.
Winding and Momentum
Winding yarn evenly on the arms helps maintain balance and consistent momentum. See my guide on winding yarn on a Turkish drop spindle for the correct technique.
When the Spindle Loses Momentum Too Quickly
If your spindle slows down faster than expected, the most common causes are uneven winding, a spindle that is too light for the fiber, or a sharp flick rather than a smooth spin. See my guide on common Turkish drop spindle problems and how to fix them for solutions.
Fiber Preparation and Spin Time
Well-prepared fiber drafts more smoothly, which means you can draft more efficiently within the spindle's spin window. My handmade wool combs and wool hackles produce aligned fiber that makes the most of every spin.
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