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Post by oregon on Oct 18, 2015 15:46:42 GMT -5
I understand the power consumption of 220 vs 110...
I don't get why different motors have such different current draws for similar HP ratings. I can realize some differences in construction/efficiency, but in the above motor, 1/8 hp at 230 drawing ~.5A, I can't seem to find any 1/8 hp 115V motors drawing much less than 2A, some as much as 7A...
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Post by oregon on Oct 17, 2015 19:53:37 GMT -5
So, I guess it's all in how well the motor is built, the conversion from HP to Amp involves the power factor and efficiency I think? Any idea how to figure the minimal hp to run for 4 - 12lb barrels, or just two? I've been looking through my motor stash, since the tumbler runs 24/7 the blip on the electric bill is noticable. Also worrying that my 5A 1/4 hp motor was actually drawing 7A... So I should replace the motor on the old scott-murray single barrel as well. Here's the motor that got me wondering (it's 230V instead of 115) but this one would still only be drawing the equivalent of 1.3A at 115V.. I haven't seen any 115V 1/8 hp motors with an Amp rating that low. Any of you motor techies want to comment? otherwise I was thinking of the second motor... ![](http://i1074.photobucket.com/albums/w418/korimako/Rocks/motor1.jpg) ![](http://i1074.photobucket.com/albums/w418/korimako/Rocks/motor2.jpg) ![](http://s1074.photobucket.com/user/korimako/media/Rocks/motor1.jpg)
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Post by oregon on Oct 15, 2015 12:40:40 GMT -5
Jim, what do you think about a fast speed, around 50rpm, for coarse grind if you're grinding hard rocks? I was also wondering. I thought I had also read that some folks liked the ~50 rpm for coarse grinding. So If I build something with two shelves (two barrels on top, two on bottom) and connect them with a reducing pulley set, with this motor I could have lots of options, the motor speed ratios are ~1.5, and if I did another pulley ratio of ~1.5 , I could conceivably have 23,35,52 rpm's all available without changing pulleys/belts? In another related question - Has anyone experimented with rough grinding w/o grit for an initial pass? Starting with rough, would you get much accomplished w/o grit in the first stage? The rivers seem to do a pretty good job around here!
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Post by oregon on Oct 14, 2015 11:27:43 GMT -5
Nice looking tumbler. Does anyone know what sort of hp/A motor you need to run those 12lb barrels (or 1,2,3,4) of them?
I have a few older induction motors around, most are several amps 1/4-1hp, which isn't really a cost issue for most things that are run occasionally, but running a tumbler 24/7 seems like it's worth paying attention to. My old scott murray has a 1/4 hp 5A! motor on it which seems like overkill and expensive. I have 4 of these 12lb barrels with a one barrel tumbler, and a three barrel tumbler... Maybe I should just find smaller barrels, that's a lot of material to keep running.
Anyone know what motors Lortone or thumblers put in the current 12-15lb tumblers?
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Post by oregon on Oct 8, 2015 0:21:20 GMT -5
Yeah, those treadmill motors are pretty useful. I haven't found an inexpensive way to control the speed if the electronics are shot, but worth keeping an eye out for free treadmills..
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Post by oregon on Oct 7, 2015 0:19:04 GMT -5
jakesrocks, notice the person's handle is Oregon, likely lives here. The sun will soon, we all hope, get blocked out by clouds for about the next 6 months so it can drizzle for days at a time. I wash cuts in warm water w/Dawn, and scrub them with a brush. Rarely have any residue. Anything porous, I wrap in a rag to get the seepage. You mean our >80-85 deg weather isn't going to continue ?! Would be nice to see some snow in the mtns this year though... Yeah, Dawn is usually quite effective on other oil/grease projects, must be seepage from the various fractures... I'll get there.
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Post by oregon on Oct 6, 2015 23:46:07 GMT -5
Oil Dry sounds good, thanks for the tip. - Kitty Litter brings back memories of one of my least favorite tasks!
Not really sure what type of oil I'm using, was University Surplus, had a 'hydraulic' official tag on it, but no other manufacturer id, still sealed. $2 for 6 gallons - I figured it was worth that for chain saw oil. Low odor and seems to cut well enough, getting thicker with all the cutting. I'll do the mineral oil swap when it runs out I figure.
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Post by oregon on Oct 6, 2015 14:48:36 GMT -5
Had the Camera out for the contest wins, so here are a few recent cuts... helpful criticisms welcome. We're still at the stage of cutting things open just to be amazed... Most of these are from within 20mins from home, Haven't figured out how to get all the oil off yet, Dawn treatment still left a residue, so you'll see the water beading in most pics... Jasper/Agate mostly, they just make you want to cut another slab to see what the patterns look like!
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Post by oregon on Oct 6, 2015 14:36:22 GMT -5
Thanks to Sheri for sending some wonderful slabs my way. Now I'll have to figure out how to use the flat lap... Pictures as promised, hand held, and some water glare... Can folks tell me what they are so I know? I have guess on a few, but a real novice... (Suggestions from other posts) 1 Jasper? ![](http://i1074.photobucket.com/albums/w418/korimako/image303.jpg) 2 -Dendritic Jasper ![](http://i1074.photobucket.com/albums/w418/korimako/image304.jpg) 3 ![](http://i1074.photobucket.com/albums/w418/korimako/image305.jpg) 4 -Leopard skin jasper (rhyolite) / Ocean jasper ![](http://i1074.photobucket.com/albums/w418/korimako/image306.jpg) 5 Kaleidoscope Jasper ![](http://i1074.photobucket.com/albums/w418/korimako/image307.jpg) 6 Rhyolite ![](http://i1074.photobucket.com/albums/w418/korimako/image308.jpg) 7 Lepidolite Mica ![](http://i1074.photobucket.com/albums/w418/korimako/image310.jpg) 8 Rose Quartz ![](http://i1074.photobucket.com/albums/w418/korimako/image311.jpg) 9 Mexican Crazy Lace ![](http://i1074.photobucket.com/albums/w418/korimako/image311b.jpg) <p>
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Post by oregon on Sept 25, 2015 11:16:45 GMT -5
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Post by oregon on Sept 22, 2015 14:19:21 GMT -5
That's a hoot. Thanks. I'll post some pictures when they show up, Nicer to be a surprise package that way ![;)](//storage.proboards.com/forum/images/smiley/wink.png) So do you know lots about Tajikistan? I had envisioned a pretty arid area, so the lots of rivers part kept me away from that region. I'll have to look at the Satellite images some more. I'd like to think it was all the hours helping the kids with Carmen Sandiego, but in the end, A map of earthquake activity & war activity allowed me to ask google the right questions, and led me to the page that seemed to describe most clues about the agates in sandstone. Amazing how hard it is to 'ask the proper question' sometimes! So, should Tajikistan really be on everyone's bucket list? Anyway, thanks for the game. I'd encourage everyone to check out the geoguesser site, it's really interesting to find out that different parts of the planet look similar in ways, and some have characteristics that let you pin point locations immediately. btw, Jasper is the 'town' just a few miles away - Good name for a pet (mine was a goose as a kid ![;)](//storage.proboards.com/forum/images/smiley/wink.png) Cheers, Rick
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Post by oregon on Sept 21, 2015 12:45:38 GMT -5
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Post by oregon on Sept 20, 2015 1:05:43 GMT -5
were they in Mexico?
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Post by oregon on Sept 18, 2015 14:44:00 GMT -5
Were they in Panama? thanks for the fun also - maybe there should be a geoguesser for rocks! geoguessr.com/
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Post by oregon on Sept 17, 2015 13:18:46 GMT -5
Were they in Morocco?
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Post by oregon on Aug 31, 2015 23:51:06 GMT -5
Thanks everyone. Lots of range there but that's the way of it. May just end up on ebay for the fun of it. I'll clean it up and figure out what to do after the holiday. Gotta post a few pictures of some other fun cuts.
Wagon's for hauling rocks!
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Post by oregon on Aug 31, 2015 1:24:22 GMT -5
Hadn't seen that - Rockhounds must get cabin fever in the middle of winter...
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Post by oregon on Aug 30, 2015 22:28:21 GMT -5
Hi, I know this saw has it's lovers and haters. Just not practical for me to use in the garage for simple hobby fun, so I want to sell it. But as it's no longer available, seems hard to price. This version is in excellent shape, has seen very little use, has the trim table and even still has the scoring guide (what was that supposed to be used for?) It'd look even better if I actually cleaned it up. Felker blade had most of the paint on it when I got it, and I cut maybe a half dozen thunder eggs. Original pump, (which did seem under powered for thicker oil I was using) Anyway, I haven't seen any nicer versions. Any thoughts on price range I should ask for it? (Wagon not included Oregon, and It seems prohibitive to ship. Thanks. ![](http://i1074.photobucket.com/albums/w418/korimako/image009.jpg) ![](http://i1074.photobucket.com/albums/w418/korimako/image014.jpg)
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Post by oregon on Aug 28, 2015 11:42:16 GMT -5
The wood is from nearby Eugene, Maury Moss ( that was the first piece I picked up with only a touch of red showing) eggs from White Fir, and Crystal? You can see a piece of jasper from behind Ochocco reservoir in the back ground next to the maury mtn piece, the look very similar colors, but pretty different. Fun.
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Post by oregon on Aug 28, 2015 11:38:07 GMT -5
yeah, I hate to drill holes in things, so will take a while until I figure out what I want to do - I like that you have the motor below, seems like mounting it on the sheet metal part of the cabinet isn't the greatest....
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