Flyer speed


The speed of the flyer is limited because at higher speeds the higher centrifugal forces lead to bursting of the roving layers on the bobbin. This limitation increases with bigger bobbin diameters so that the speed of the flyer has to be reduced proportionally to the size of the bobbin.

Optimum flyer speeds have to be determined by tests but the following Fig. 43 shows recommended maximum and minimum flyer speeds with different fibre materials and twist coefficients.

Fig. 43 – Flyer speed recommendations according to fibre material and twist coefficients