So coming from my other thread in engines regarding re gluing flywheel magnets now the other question is if they are broken can they still be used? I have two that are broken in half. No pieces are missing ,they go together perfectly crack becoming totally invisible. Checking polarity with them back together, it checks out OK hence the question, are there any electrical problems from that crack, such as stator not producing current or producing reduced current. Researching it online I was only able to find two references to this issue but they merely say not to reuse them, and do not mention reason why.