Im sorry if this has been discussed before but I didn't see the post if it has.
I have a question that I havent been able to get a direct answer to, so I figured this is the place to get some answers.
I just recently started trying to balance T Jet armatures on a custom made magnetic jig that I cobbled together, and was wondering what the pros and cons would be of balancing the arm with epoxy or cutting small grooves in the laminations to remove weight.
I noticed that most places that professionally balance Arms use epoxy but that seems counterintuitive to me. I thought that you would want a lighter weight armature for quicker acceleration. A friend of mine does his own and said that epoxy is the way to go. He couldn't tell me why it was better, but said it had something to do with "the heavier arm kind of pushed itself faster as it spun, do you know what I mean"
I didn't accept that answer. It wasn't scientific enough. I also understand the argument that removing metal takes magnetic material away from the magnetic field, but I am cutting small grooves, not changing the distance from the magnets.
Also, what are the benefits of a balanced arm besides more top end capability and smoothness? Does it increase torque off the bottom also?