#$%!! Fan

A year or so ago I scrounged one of those big 4' shop fans that stand up on a pedestal and blow huge amounts of air around the shop. Didn't
have the stand, the switch was broken and the bearings sounded like a coffee can full of rocks..but it blew air well enough. Summer is again upon me..its been 90F for the last week or two..so its time to fix er up. Two 5/32 setscrews hold the fan blade to the shaft, so they got to bet loosened to take the blade off.
Serious tugging with a basic good quality allen wrench..no movement. Apply Kroil in copious quanties..let sit, use small pipe as snipe on allen wrench..tap several times..give her a pull..and round out the setscrew instantly..Frack..
Take out 3/8" socket with 5/32 allen..add small breaker bar to second allen, tug..and shear allen off inside the setscrew....FRACK!
Blades are in the way as is the back cage. So cage has to go. solid weldment..so taking out trusty air cut off wheel, I slit the cage to pull out around the motor shaft..blades in the way...shit..cut away entire section. and remove the cage, will tig it back together later.
No amount of poking, prodding, thumping coaxing or praying will get that busted allen stub out. So drill a series of holes around the allen, then use a 2 flute end mill in a hand drill to cut enough material away so the setscrew and allen fall out.
Fan too big and too close to coupler to use milling machine..so must do with drill motor.
Drill out other rounded setscrew.
Take fan and motor to hydraulic press to press shaft out of fan assembly. Discover fan assembly too big to go in press...damn..
Rig up chunks of I beam, hang motor from fan coupler with a couple pieces of 3/4" flat stock across I beams. Soak well in Kroil. turn heavy brass drive to under shaft size and using a 2 lb shop hammer, attempt to drift shaft out of fan. Repeatedly..more kroil..more beating..more kroil...nada..no movement, nothing.
fan attachment is too wide for a gear puller to work and too flimsy.
Get out rosebud and OA torch. Head couple till dull red, use brass drive and 2 lb hammer. Repeatedly. More fire, more beating, more fire, more beating...nada. Fan will not move in either direction.
Let cool. Use Kroil. Use hammer and drift. Repeatedly. Nasa.
Stand there incredulously. Go in house and log on to usenet. Maybe the good faries will remove it for me while Im sleeping.
Sure they will. Ayup. Oh for sure dude.
Sigh...
All I wanted to do was change the bearings, damnit
Gunner
The aim of untold millions is to be free to do exactly as they choose and for someone else to pay when things go wrong.
In the past few decades, a peculiar and distinctive psychology has emerged in England. Gone are the civility, sturdy independence, and admirable stoicism that carried the English through the war years . It has been replaced by a constant whine of excuses, complaints, and special pleading. The collapse of the British character has been as swift and complete as the collapse of British power.
Theodore Dalrymple,
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Gunner wrote:

You Idiot - it was still working, and you fiddled with it. Serves you right. best bet is to go away and do something else. How to do it will come to you. Hidden screw, thread on motor shaft to fan blade, Bad Karma , - take your pick. Personally, I blame Geaorge Bush.
Your just having a bad day, its your turn, thats all. Dont stress about it.
Andrew VK3BFA.
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<SNIP>
Another fine example of the "Gunner Factor". Lower your expectations, embrace the horror!
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On Sun, 14 May 2006 13:09:52 GMT, "Tom Gardner"

true! he'll eventually end up with a workshop full of chopped up mangled fan then realise that to get new bearings into it you also need to get a new fan around them.
it was a funny read though. Stealth Pilot
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Nothing saved, nothing gained... :-)
I expected a 4' self acting wheel pulley to be used myself. I expected a 8' square ultrasonic tank to be used - shake the sand out...
Such is life. Expecting mine to go one of these days - it is breathing sand and metal every day.
Martin
Martin Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net NRA LOH & Endowment Member NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member
Tom Gardner wrote:

-
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On Mon, 15 May 2006 00:28:49 -0500, "Martin H. Eastburn"

Simple enough to get the motor apart. Both 6203Z bearings are toast, shafts are ok. No damage to the motor cases. Ive hunted through my bearing stockpile..and no shielded bearing of that size, oddly enough. Though I did toss about 2-300 lbs of bearings away last year cause the boxes were wet.
I did find a few sets of double row "swiveling" bearings..interesting design Id not seen before. 1203 bearing. Must be made for shaft usage where they may be a bit out of line. http://cgi.ebay.com/1-Self-Aligning-Ball-Bearings-1203-17x40x12-Self-Align_W0QQitemZ7533193438QQcategoryZ25284QQssPageNameZWD1VQQrdZ1QQcmdZViewItem
bit overkill for an electric motor. Ill save em for a better project.
IRRC.these 6203 bearings are pretty much standard motor/motorcycle wheel/super skateboard/etc etc bearings. Ebay they are a buck a piece
Ill call around in the morning and see who has a pair of them. Locally they are likely to be $5-10 each. Ebay..a buck apiece plus shipping.
Which will be better for motor application..metal shield or rubber shield?
No provision for greasing them of course..shrug..Dayton "Fan Head" motor. Which was filled with rust..not surprising considering it had been stored outside before I got it, and for a while after I got it. Ill have to bead blast the inside of the motor bell ends a bit and clean out some of the aluminum corrosion and the bearing recesses..but its an easy fix. Still need to pull the back end bearing, which is in a blind recess..but worst comes to worst..I can drill a couple holes on the far side of the end bell and use a punch to knock it out..then tig the holes closed again.
Two speed motor with "string pull" switch, which appears to be missing the string. Ill pop it apart and see if its usable.
Rebearing, a quicky paint job, some fast tigging of the cage, stick it on a stand made of a chunk of pipe and a truck rim and Ill have a 4' two speed air mover for the shop. Something Im looking forwards to having when the temp in the shop is 115F.
And not something I could afford to go out and buy. A decent one is about $200 new, and one hardly sees a used one anywhere in So Cal as they are always needed in machine shops.
My time is my own on weekends..so labor cost is nil. Materials I have except for the bearings.
Next thing I need to find is a decent sized swamp cooler thats in good enough shape to put on a dolly and run out in the shop. Most of them unfortunately are totally rusted out, not that many plastic ones can be found used around the Central Valley or even in So Cal.

The aim of untold millions is to be free to do exactly as they choose and for someone else to pay when things go wrong.
In the past few decades, a peculiar and distinctive psychology has emerged in England. Gone are the civility, sturdy independence, and admirable stoicism that carried the English through the war years . It has been replaced by a constant whine of excuses, complaints, and special pleading. The collapse of the British character has been as swift and complete as the collapse of British power.
Theodore Dalrymple,
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Gunner wrote:

Use enough Kroil and you will need a fan:)
--
For choosing to fight, one gets the horrors or war, stress, and possibly
death.
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I make a living as a HVAC tech and have to rebuild allot of fans of different configurations. One that used to bite me in the ass was the inducer fans you see on larger rooftop heating equipment. These fans are right in the exhaust of the burner, to pull the heated gases through the burner. When a motor fails the rusted mess you get left with refuses to come apart under all types of added force. I learned early to see if I had all the parts needed to do the repair, that means motor, and fan blades, and often part of the blower's housing. Then careful application of a hacksaw, and toss pretty much everything and replace it all with new parts! Seems extreme. but at $95 per hour $20-$30 in extra parts goes allot father than the time need to separate and save the normally "reusable" parts. I have saved fans when parts were not available, but it seems ridiculous to spend a hour of labor to save twenty bucks.
Gunner, toss it all and buy new! It will keep the blood pressure down!! Anyone want to start a "buy Gunner a fan fund?? ;-) Greg ,
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On Sun, 14 May 2006 10:37:41 -0500, "Greg O"

But its a perfectly good Fan!! Just has a few gaping holes in the part that goes around the motor shaft..and bad bearings in the motor..and no pedestal, and a frayed line cord..and a wire guard that's been cut with a cutoff wheel.
But it was Free!!
Sigh....

Gack..dont start that..it was embarrassing enough some years ago when I was ass hole deep in the swamp....

Gunner..dreading going out to face the Fan... The aim of untold millions is to be free to do exactly as they choose and for someone else to pay when things go wrong.
In the past few decades, a peculiar and distinctive psychology has emerged in England. Gone are the civility, sturdy independence, and admirable stoicism that carried the English through the war years . It has been replaced by a constant whine of excuses, complaints, and special pleading. The collapse of the British character has been as swift and complete as the collapse of British power.
Theodore Dalrymple,
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Geez! I guess after you explain the pristine condition I can see why you want to hang onto it!! Greg
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Greg O wrote:

Sounds like that "Lost Dog" message of years past - "Lost - three legged dog, mostly deaf, blind in one eye, matted black mange fur coat - answers to "Lucky""
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: :But its a perfectly good Fan!! Just has a few gaping holes in the :part that goes around the motor shaft..and bad bearings in the :motor..and no pedestal, and a frayed line cord..and a wire guard :that's been cut with a cutoff wheel. : :But it was Free!!
Put it back together with duct tape and sell it on eBay.
--
Bob Nichols AT comcast.net I am "RNichols42"

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On Mon, 15 May 2006 00:20:00 +0000 (UTC), Robert Nichols

To the gent who suggested using the rivet gun..I owe you one cuddly fuzzy and well socialized kitten of your choice.
Ive got a Cleco air hammer/riveter that Ive had kicking around for some time..so after your suggestion, I went out this afternoon, and with the hub well supported on steel beams, pushed the motor right out of the hub. Took a bit of pushing and some doing..but that riveter pushed that motor out like a constipated old man pushing out a hard turd. Lots of rust flakes fell out of the hub, even with the Kroil but it worked slick as can be.
My gratitude and give me your snail mail addy and Ill send a fuzzball out to you.
What color(s) would you like?
<G>
Gunner
The aim of untold millions is to be free to do exactly as they choose and for someone else to pay when things go wrong.
In the past few decades, a peculiar and distinctive psychology has emerged in England. Gone are the civility, sturdy independence, and admirable stoicism that carried the English through the war years . It has been replaced by a constant whine of excuses, complaints, and special pleading. The collapse of the British character has been as swift and complete as the collapse of British power.
Theodore Dalrymple,
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wrote on Sun, 14 May 2006 18:04:18 GMT in rec.crafts.metalworking :

    I'm afraid to find out what happens next When the Gunner Hits the Fan!
tschus pyotr
--
pyotr filipivich.
as an explaination for the decline in the US's tech edge, James
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Noth'n like a good, hard hitting air hammer and some carefully ground drifts to drive stuff like that off. Typical US manufactured shit....(the fan). The hammers work amazingly well; even holding the parts in your hand, the blows are so fast the inertia of the work stabilizes it. Heat the hub and drive the shaft out. have at it. JR Dweller in the cellar Gunner wrote:

--
--------------------------------------------------------------
Home Page: http://www.seanet.com/~jasonrnorth
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wrote:

Humm...I do have a air hammer (rivet gun)...Ill try that this morning. Its been sitting steeped in Kroil all night. Thanks for the idea!
Gunner

The aim of untold millions is to be free to do exactly as they choose and for someone else to pay when things go wrong.
In the past few decades, a peculiar and distinctive psychology has emerged in England. Gone are the civility, sturdy independence, and admirable stoicism that carried the English through the war years . It has been replaced by a constant whine of excuses, complaints, and special pleading. The collapse of the British character has been as swift and complete as the collapse of British power.
Theodore Dalrymple,
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50 ton press and proper punch should get it out. When you do you might be able to tell if it was a right or left hand thread. ;-) Tom
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It's going to be about Tuesday night when Gunner finds out that the threads are left handed <BG>
Mark Rand (feeling sympathy for 90 deg heat at this time of year) RTFM
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Any chance the screws are doubled up like on my Bridgeport pulley. I wasn't amused when I found that one out. Released the obvious ones not realising there was another set underneath.
Gunner wrote:

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On Sun, 14 May 2006 22:43:15 +0100, David Billington

No. I drilled all the way down and into the motor shaft. The shaft has a flat for one setscrew and another setscrew 90' off.
Gunner

The aim of untold millions is to be free to do exactly as they choose and for someone else to pay when things go wrong.
In the past few decades, a peculiar and distinctive psychology has emerged in England. Gone are the civility, sturdy independence, and admirable stoicism that carried the English through the war years . It has been replaced by a constant whine of excuses, complaints, and special pleading. The collapse of the British character has been as swift and complete as the collapse of British power.
Theodore Dalrymple,
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