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Post by rocklicker on Jan 6, 2012 16:49:46 GMT -5
I have a qt66 that always seemed to have a hollow metal sound when it ran. I figured it was just the metal housing or belt guard. I was able to significantly lower the noise and do away with the hollow metal sound by mounting it on some large squishy rubber feet. I used rubber corks drilled and fitted with a small bolt. Now it runs nice and quiet with no loud gurgling. It's only slightly noiser than other Lortone tumblers and pretty stable as long as it's got rocks in it. Now, the tumbler itself is an oldie as you can see, so if there were ever rubber feet on it they are long gone. The newer ones may be quiet already for all I know. One other added benefit is that there is now more air flow around the motor which runs hot normally. It can breathe air through the bottom of the motor a little better. Steve
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herchenx
Cave Dweller
Member since January 2012
Posts: 3,360
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Post by herchenx on Jan 6, 2012 17:52:37 GMT -5
Nice work!
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keystonecops
freely admits to licking rocks
Member since October 2010
Posts: 957
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Post by keystonecops on Jan 7, 2012 5:42:01 GMT -5
I like that idea. I used small blocks of wood to raise my tumbler fer air flow, gonna get some rubber and follow yer lead. Later Clyde
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Post by connrock on Jan 7, 2012 12:02:03 GMT -5
You can also put the tumbler(s) on corrugated cardboard to dampen the sound.
connrock
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Jon
starting to shine!
Member since June 2011
Posts: 41
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Post by Jon on Jan 9, 2012 18:08:48 GMT -5
You can also put the tumbler(s) on corrugated cardboard to dampen the sound. connrock I would be a little hesitant to put my qt66 on corrugated cardboard due to the temperature that the motor usually runs at, I would be concerned about an increased fire risk. I also have an oldie qt66 that was really loud when I first started using it, but it was the chain noise. I ordered replacement parts and swapped out the chain for a belt and it was then way quieter.
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Post by connrock on Jan 10, 2012 12:14:21 GMT -5
Jon, I'm pretty sure that corrugated cardboard starts to burn somewhere around 800F or higher. If a motor gets that hot it's going to start a lot of other materials on fire as well and should have shut itself down long before it reaches that temperature.
Consider that some rubber will burn at 260F so using the wrong type of rubber may not be a good idea.
In any case,only a base made of metal,stone or other non-flammable material might be the way to go to be sure a tumbler motor wouldn't start a fire?
connrock
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Post by jakesrocks on Jan 11, 2012 13:04:10 GMT -5
While checking the trash yesterday to make sure my wife didn't throw out any of my stuff, ( she's on a spring cleaning rampage), I spotted something she threw out that might work for noise dampening. An old bath mat. One of those rubber thingies that have the suction cups on the back side. A lot of tumbler noise is dependent on what the tumbler is sitting on. Mine sit on the bottom shelf of my work bench and without a piece of old carpet under them, they produce lots of noise. I think the bath mats would do a good job of killing noise.
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