"How To" wrap a rotor magnet...

[lincpimp]

Originally Posted by JERRY2KONE

hey Linc how goes it? So is the shrinkwrap just for helping with the form of the whole project, and then you take it off?? Or does it stay on the rotor?? Do you have any tech data that can give us some kind of idea how much protection this will provide versis not doing it? I am just curious how much of an advantage this might give, and how it may affect the performance & efficiancy of the motor.. Looks like a fun job and if it does give an advantage worth the work, then you have just taught us all how to do it. Nice tutorial/how to. Not bad for a pimp without any monkies to help out.

Not sure if it will do much. Hopwfully it will hold the magnet together, as the one piece magnets tend to come apart. I am not sure if I should have wrapeed the rotor first, then applied the epoxy.

Originally Posted by BrianG

linc, couldn't you put the rotor on some type of lathe and gently scrape the rotor? This would remove any high spots and balance it at the same time, no?

It would true it but I am not sure if my wrapping method is precise enough for that to perfectly balance it.

Originally Posted by Tempted

Nah, it wouldn't balance it just smooth it. Different density between the epoxy and rotor so for that to work you would have to grind away all the epoxy. Easiest way to balance is to put it in extremely smooth bearings and spin it. Where it stops, lightly sand the bottom a bit. Spin it again and see what happens. Do that until the rotor doesn't stop in the same place every time and your done. There are more precise ways but nothing without a sophisticated machine that I am aware of.

I plan to use my prop balancer to balnce this rotor, and just sand it as you suggest. We will see how that works.