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Post by Drummond Island Rocks on Mar 8, 2018 7:58:47 GMT -5
I am neutral on this topic. I have a large home built tumbler that is 5 years old and 6 Lortone tumblers that get very little maintenance (practically none) and I have not had one motor failure. If adding fans adds a sense of security though I say go ahead. Certainly no harm. Maybe some good reading in this article from a motor manufacturer. www.leeson.com/TechnicalInformation/hottopic.htmlChuck
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Post by nowyo on Mar 8, 2018 9:38:02 GMT -5
Have to agree with Chuck above. I have a 45C and a QT-6 running right now that belonged to my FIL. I've had the running for ten years, I don't know how many years he had them. Replace the motor on the 45C a couple of years ago. If your tumblers are in an area with restricted airflow then cooling fans may help. All machinery wears out with time. Certainly won't hurt to run some fans, and if you have the stuff laying around and feel like messing with it, great. I wouldn't spend much money/time to set it up, as I doubt the cost/benefit ratio would be positive. Personal choice, not worth arguing about.
Russ
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Post by TheRock on Mar 8, 2018 20:40:20 GMT -5
I am neutral on this topic. I have a large home built tumbler that is 5 years old and 6 Lortone tumblers that get very little maintenance (practically none) and I have not had one motor failure. If adding fans adds a sense of security though I say go ahead. Certainly no harm. Maybe some good reading in this article from a motor manufacturer. www.leeson.com/TechnicalInformation/hottopic.htmlChuck Chuck good article yes you need good instrumentation like I used but not everyone has the Meters that I have like used in the trades. Another thing that is hard to accomplish is getting true internal winding temps like they speak of in the article. I noticed when I was running my BD10 saw cutting slabs for 2 hrs straight the other day the motor case temp never got past 80 deg. I'm sure there is a little bit more or should I say a whole lot more engineering that goes into a $1225.00 piece of equipment than a $125.00 one. One thing i would like to make mention of that I didn't. This last summer I had both thumbler B's going and the power went off in the City when the power came back on those two units did not they were stalled out and the motors were hotter than Billy Hell they had been stalled out that way cooking and Hot for two days. I plan to come up with a circuit that if the power goes out it will stay off until I reset it. I am convinced if not for the fans I had running on the Motors the equipment would have been ruined. Again this is a design flaw from thumbler not using capacitor start motors instead of a cheap shaded pole fasco motor. ~Duke
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huskeric
spending too much on rocks
Member since May 2016
Posts: 353
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Post by huskeric on Mar 11, 2018 10:47:53 GMT -5
Again this is a design flaw from thumbler not using capacitor start motors instead of a cheap shaded pole fasco motor. ~Duke I'm going to tease you just a bit, but only because you're smarter than I. I promise, I hope you laugh WITH me, but when I read this, I immediately flashed to the hangar scene in Fletch where he's talking about Fetzer valves. "It's all ball bearings these days, you boys need a refresher course?" I have a couple of Thumlers, and I always thought it was telling that they use the EXACT same motor that's in the builder-grade exhaust fans in my house. I couldn't have told you that was a shaded pole motor, but I can tell you, they're cheap. On the plus side, they're also cheap to replace, but better still that you don't need to. It is troubling to me that they stayed on, because I was always under the impression that they had some sort of thermal shutoff. Maybe that's just when the wires get hot enough to melt.
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Post by TheRock on Mar 11, 2018 20:18:26 GMT -5
Well they very well may have kicked off..... instead of being 300 deg maybe they cooled to 200 deg kicked on again briefly and cycled like that till I happened to catch them stalled out. Gee I don't see any Geniuses Saying Awe Heck That's okay!!! Mine have been doing that for 10 years. Next time I load them up I will make a movie of it as proof! ~Duke
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unclesoska
freely admits to licking rocks
All those jade boulders tossed in search of gold!
Member since February 2011
Posts: 934
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Post by unclesoska on Mar 12, 2018 11:52:10 GMT -5
Every time the power goes out, my tumblers stop tumbling. I've learned to check them, and give 'em a little nudge, and bingo-bango, they're on a roll again. Once in a while, if I forget the nudge, the motors just shut down, and after an extensive un-plugged cooling period, plugged 'em back in and away they go. It didn't take any fans, or infrared temperature meters , or anything else fancy, and certainly no rocket science or thinkin' that makes your head hurt. Yesterday, I picked up a like-new, 15" Raytech Hustler vibe lap from an estate sale for $20. Took it home, plugged it in, and nada. Removed the motor, added some oil, worked the motor shaft a bit, plugged it back in and SHAZAM! It vibrates and works as good as ever. Again, nothing fancy, no headache, just a little common sense.
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Post by TheRock on Mar 12, 2018 14:44:23 GMT -5
If it caused damage..... aka a Fire to my house. And naturally I would take them to Court when all was finished I would own them. ~Duke
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