My Lyman 2500 tumbler died after about 60 hours of use (not continuously, either). But it might have been my fault because I put a box over it to quell the noise.
I didn't save my receipt so a new motor would have been $55.00. But the truth is, I hated the thing so much because it was so loud, and obnoxious sounding. So I decided to take it apart and see what I could do with it.
The springs attach to the base with hot glue, and I used my handy heat gun to melt it. Once you take a look, you can see how it works. An electric motor hangs on the bottom of the bowl. The motor has a weight on its shaft that is slightly off center. As it spins, it tilts the bowl a little, in every direction (because the whole assembly is standing freely on the springs). Make that fast enough, and it comes out as vibrating action.
I took the dead motor off, and substituted a motor I got from an electric fan. I centered this motor as well as I could, drilled a couple of holes and bolted it on. Then I got some epoxy paste (like JB Weld) and formed up a plug for the shaft. I put two 170 grain lead bullets into the paste, off center. Then I let that dry.
Well, it runs like a champ. The new motor, from a $20.00 electric fan, seems to be superior to the Lyman motor. Time will tell. But it runs much quieter. All I can hear is the sound of the media and brass. Plus, I now have 3 speed settings, whereas the Lyman doesn't even have a switch.
The only problem right now is cooling. The fan motor can run all day, but it's used to having excellent air flow. I'm testing it to see how hot it gets, right now I have it set up with separate cooling fans. I have rigged up a base for the tumbler that has a fan in it, blowing straight up. Hopefully I can come up with a good combination so I don't burn it out like I did the original.
Cleaning action looks pretty decent, I think that's more of a function of the weight than the motor. I might have to run it a few more cycles to match the cleaning action, but I'm happy that I can run this tumbler without going crazy with the noise. Plus I did it with stuff I had around the house, rather than forking out big bucks. When/if this burns out, I'll probably just break up another fan.
