The first generation Louët spinning wheels, like the S10 and S17, all have a single belt bobbin drive with an adjustable flyer brake to regulate tension. This results in spinning wheels that are very easy to learn how to spin on, and the wheels are very suitable to spin thicker yarns. The bobbins have a sheave with three settings that can be used to obtain three spinning speeds or ratios. By using different types of bobbins and flyers, Louët spinning wheels can be used to produce every kind of yarn, from coarse wool to fine silks.
The new generation of Louët spinning wheels, like the Victoria, have Scotch tension: single belt, flyer drive with an adjustable bobbin brake to regulate the tension on the yarn that you are spinning. The standard ratios are higher than those of the first generation, which makes it easier to spin very fine yarns. When using the high-speed set the ratio increases even further.