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Post by knave on Nov 25, 2019 8:31:32 GMT -5
Much will be revealed when you actually get the motors. The 3 leg motor mount shown is the style that mounts to a blower housing. See attached.
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Post by knave on Nov 25, 2019 11:44:49 GMT -5
This one is for a fryer exhaust at Burger King. I will need some soap in a bit lol.
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Post by knave on Nov 25, 2019 11:49:08 GMT -5
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Post by RocksInNJ on Nov 25, 2019 13:29:09 GMT -5
This one is for a fryer exhaust at Burger King. I will need some soap in a bit lol. Tumbling rocks with that thing is gonna make you hungry lol. I won’t even ask how you acquired it.
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Post by knave on Nov 25, 2019 14:37:13 GMT -5
This one is for a fryer exhaust at Burger King. I will need some soap in a bit lol. Tumbling rocks with that thing is gonna make you hungry lol. I won’t even ask how you acquired it. Haha! Nope, I had to install it at the Burger King. In a few hours it won’t be shiny anymore.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 25, 2019 17:27:13 GMT -5
Much will be revealed when you actually get the motors. The 3 leg motor mount shown is the style that mounts to a blower housing. See attached. Ah, a squirrel cage fan motor. Ain't no ceiling fan motor, it is an industrial squirrel cage fan motor, great catch knave. In this arrangement it does have a lot of 'air over' as opposed to ceiling fan situation. Must hook up and run to check for heat.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 25, 2019 17:31:46 GMT -5
This one is for a fryer exhaust at Burger King. I will need some soap in a bit lol. That is a 3450 rpm beast. Watch out Burger King ! Baldor's are fine motors. Guessing install is greasy. Yes, soap and shower after install. Probably not much rust on shaft.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 25, 2019 17:48:17 GMT -5
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Post by knave on Nov 25, 2019 20:52:29 GMT -5
I really wonder what that motors purpose was? Google brings up next to nothing. 225 rpm too slow for squirrel cage blower, also the mount angles are wrong for a blower housing. Very good price on that motor. It will have a thermal overload, you will find out fairly quickly if it runs cool enough.
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Post by oregon on Nov 25, 2019 22:06:21 GMT -5
This thing is a beast for a 1 amp motor. Gotta have a ton of torque. It just struck me why this thing is so heavily built(giant bearings and big 17mm shaft) - as knave noted it likely runs a cantilevered squirrel cage fan blade. Not much worse duty than HVAC squirrel cage fan duty considering bird's nest, build up on blades, leaves, off balances, etc. looks like a lotta motor for $12, thought maybe a motor cooling fan would help, but with the low rpm, might not do much....
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Post by knave on Nov 25, 2019 22:29:30 GMT -5
I recommend brazing with 50% flux coated sil-phos
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Post by oregon on Nov 25, 2019 22:36:29 GMT -5
1/2" shaft fits in hole 1/2' deep. After that the hole in shaft looks like it steps down to 12mm full depth. 1/2" shaft pressed in 1/2" deep step. Probably not good for a reliable coupling method. Could be drilled and pinned with brass pin but not the best way. ghetto slip joint, but if you have some thick heater hose with a close ID & some hose clamps, that can work well for an inline motor shaft to drive shaft connection. (Apple cider grinder's been working that way for years 5/8 to 17mm is pretty close.
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Post by parfive on Nov 25, 2019 23:10:31 GMT -5
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jamesp
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Posts: 36,154
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Post by jamesp on Nov 25, 2019 23:21:04 GMT -5
Lots of math. Nice little smart milling machine. Looks like some kind of precision turbine there Rich. Looks to be a fancy impeller for a pump.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 25, 2019 23:44:57 GMT -5
1/2" shaft fits in hole 1/2' deep. After that the hole in shaft looks like it steps down to 12mm full depth. 1/2" shaft pressed in 1/2" deep step. Probably not good for a reliable coupling method. Could be drilled and pinned with brass pin but not the best way. ghetto slip joint, but if you have some thick heater hose with a close ID & some hose clamps, that can work well for an inline motor shaft to drive shaft connection. (Apple cider grinder's been working that way for years 5/8 to 17mm is pretty close. Nice one oregon. Good hose will make a fine coupling. Hose trick may be an issue on bigger shaft. Really need a bigger shaft to get needed 25 rpm min on a say 9 inch od barrel requires a ~1 inch shaft. 1"/9 x 225 = 25 rpm or 1.5"/9 x 225 = 37 rpm. knave, forgot, need larger shaft for reason above. May just take some 1" to 1.5" solid shaft and have the machine shop bore a 17mm hole.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 26, 2019 0:11:15 GMT -5
I really wonder what that motors purpose was? Google brings up next to nothing. 225 rpm too slow for squirrel cage blower, also the mount angles are wrong for a blower housing. Very good price on that motor. It will have a thermal overload, you will find out fairly quickly if it runs cool enough. It is bigger than they listed the size at. Lots of copper in this one. Will run soon and do heat test. At only 225 rpm it must not get much cooling air. The bearings are plenty big enough to serve as one of the tumbler bearings. You never know what you might find at Surplus Center. They have a catalog they send out. You should get it. Great place to buy pulleys and pillar block bearings for home made tumblers. The stock changes constantly. They have 47 of these left. Might be zero tomorrow. In some cases they will list like 300 AC 1/2 hp motors worth $250 each. Some one will buy the whole lot in minutes after being listed.
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EricD
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High in the Mountains
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Post by EricD on Nov 26, 2019 9:52:52 GMT -5
This thing is a beast for a 1 amp motor. Gotta have a ton of torque. It just struck me why this thing is so heavily built(giant bearings and big 17mm shaft) - as knave noted it likely runs a cantilevered squirrel cage fan blade. Not much worse duty than HVAC squirrel cage fan duty considering bird's nest, build up on blades, leaves, off balances, etc. 1/2" shaft fits in hole 1/2' deep. After that the hole in shaft looks like it steps down to 12mm full depth. 1/2" shaft pressed in 1/2" deep step. Probably not good for a reliable coupling method. Could be drilled and pinned with brass pin but not the best way. One could always use steel tubing for the primary (driven) shaft, machined to a tight 17mm on the motor end and secured with one or more set screws to the motor shaft. Might work loose in the long term, but would be an inexpensive test of the motor's tumbling ability since you can get it in almost any wall thickness to make your barrel speed whatever you want. There are small steering shaft u-joints in the automotive industry that you could also use to couple the motor shaft to the tumbler shaft
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 26, 2019 14:34:40 GMT -5
This thing is a beast for a 1 amp motor. Gotta have a ton of torque. It just struck me why this thing is so heavily built(giant bearings and big 17mm shaft) - as knave noted it likely runs a cantilevered squirrel cage fan blade. Not much worse duty than HVAC squirrel cage fan duty considering bird's nest, build up on blades, leaves, off balances, etc. 1/2" shaft fits in hole 1/2' deep. After that the hole in shaft looks like it steps down to 12mm full depth. 1/2" shaft pressed in 1/2" deep step. Probably not good for a reliable coupling method. Could be drilled and pinned with brass pin but not the best way. One could always use steel tubing for the primary (driven) shaft, machined to a tight 17mm on the motor end and secured with one or more set screws to the motor shaft. Might work loose in the long term, but would be an inexpensive test of the motor's tumbling ability since you can get it in almost any wall thickness to make your barrel speed whatever you want. There are small steering shaft u-joints in the automotive industry that you could also use to couple the motor shaft to the tumbler shaft That would be a great. I need a 17mm id pipe with an outer diameter 1 to 1.5 inches that fits in a pillar block. Meantime I will hook it up and run it under some sort of load. If it runs well then the parts are getting ordered for a permanent build.
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Post by oregon on Nov 26, 2019 17:08:19 GMT -5
Fun building projects - but what do you guys do with hundreds of lbs of tumbles? pave the driveway?</abbr>
17mm is pretty common metric size, reminded me that my two barrels are running on 17mm rods with outer heater hose sourced from a treadmill. But those rods came out of rollers with bearings pressed into the ends of them, the rollers would have been in the 2-2.5" range. Folks are always giving those away - I should tinker with the large DC motors out of them yet as well. large pillow blocks aren't as cheap, large D rod spendy here. The vbelt/pulley indirect drive is still a viable solution... But being in the scrounge yard center of the universe, 20c /lb for parts doesn't rule many ideas out. Looking forward to finished product.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Nov 27, 2019 5:24:10 GMT -5
Fun building projects - but what do you guys do with hundreds of lbs of tumbles? pave the driveway?</abbr> 17mm is pretty common metric size, reminded me that my two barrels are running on 17mm rods with outer heater hose sourced from a treadmill. But those rods came out of rollers with bearings pressed into the ends of them, the rollers would have been in the 2-2.5" range. Folks are always giving those away - I should tinker with the large DC motors out of them yet as well. large pillow blocks aren't as cheap, large D rod spendy here. The vbelt/pulley indirect drive is still a viable solution... But being in the scrounge yard center of the universe, 20c /lb for parts doesn't rule many ideas out. Looking forward to finished product. The challenge is the direct 17mm motor shaft to the 1 to 1.5 inch barrel shaft coupling oregon. The rest of the build is simple since there are no sheaves or v-belt. Great ideas in using the tread mill rollers. And the heater hose. I have access to all kinds of hydraulic and heavy duty air hose at the scrap yard. And browsing EBAY may result in a coupling. I believe there is two 4 foot sticks of 1.5" solid shaft in the boneyard. If nothing else I may have the local machine shop bore a 2 inch deep X 17mm hole in one of these shafts using their metal lathe. Drill and tap for set screws and grind a better flat on the motor shaft. The machine work costs are well within budget after saving money on a nice motor and having the heavy shafts in stock already. It is the novel design driving me, a weird rock tumbler with direct coupled low rpm/low power usage motor. What to do with tumbles ? I give them away to customer's kids mostly, sometimes the parents have interest in rocks. Kids marvel over them, parent clients happy, win win. Or the guys that own the salvage yards like to trade a bit, some of their grandkids are into the tumbles. rock coinage My car mechanic's kids love the tumbles. The postman's kids. Not to forget the in-law's kids:
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