“Any object striking a moving wheel causes damage (sometimes only visible with a magnifying glass or microscope).
Top quality manufacture will safeguard against damage. Lower standard processes will produce an inferior quality. SAPIM draws wire in such way that no change in molecular material structure occurs. The spoke does not twist much when it is built into a wheel.
Aerodynamic, elliptical spokes, such as the SAPIM CX-Ray spoke, are best fitted with a special CX-Ray key.
This will prevent the spokes from twisting during lacing and centring.”
Quote from sapims website Talking about why spokes. Nap at the butt Made me chuckle. Basically says our spokes snap here but we dont know why. I recon poor draw and cross sectional area change magnifying stress coupled with te low tension on stans rims cyclically shock loading the spoke.
Nothing hit mine ive had front and rears break. Had a rebuild with new spokes on the rear from hope and had no other issues with thT wheel till i popped a spoke through the rim last year. – oh and when i broke the spokes i was 68 kg , 82 now but still under 85 limit on wheels.