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...Anyone tried to take of the resonator sometimes to reduce the weight? I have thought about it, but never tried it although I am not sure what the effect on the sound will be.
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I have a Deering Goodtime that doesn't have a resonator that I play frequently, and my main complaint with that is that it changes my right arm placement and hand position. Without the resonator to hold it away from my body, everything changes. So when I pick up my banjo with resonator there's all kinds of funky going on that I have to get re-used to. And once I get used to the resonator and pick up the Goodtime, is just the same funky in reverse.
It's quite the vicious cycle.
However, to answer your question about the weight: I'm sure it would reduce the weight somewhat, but I can't be an accurate judge of that because my Washburn B-19 is known for being an extremely heavy banjo ( banjohangout.org/archive/270657), and the Goodtime doesn't even have a tone ring to add weight.