Originally Posted by
Road Fan
Znomit: You mentioned a "a highly tuned DIY light." What does this mean? High current? Very large input or stand light capacitors? or what? I could imagine higher current causing more intense cogging.
It was a dual LED light tuned to drive the LEDs at 1A.
See here, Martin makes nice well behaved circuits but you can tune the capacitor values to give a big peak.
http://www.pilom.com/BicycleElectron...uits.htm#Boost
Think I only noticed it on smooth asphalt over a small speed range.
Oh, another one I made would vibrate… turned out my rectifier was only catching half the waves.