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From: Bob La Londe <none@none.com99>
Newsgroups: rec.crafts.metalworking
Subject: Re: I Quit
Date: Thu, 4 Jul 2024 16:33:53 -0700
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On 7/4/2024 3:09 PM, Jim Wilkins wrote:
> "Bob La Londe"  wrote in message news:v66tt7$2so7t$1@dont-email.me...
> 
> I'm sure you are all tired of the saga of the built to "a" spec Ingersol
> Rand compressor from Craptor Supply.  The one that killed its own motor
> in a year.  The one others have reported catching on fire.  The one I've
> concluded only worked as long as it did because the thermal protector
> had to be defective or disabled in the original motor.  (Which is
> probably why some caught on fire.)  The one that tripped the thermal
> constantly on one replacement motor, and the breaker and/or thermal on
> the other.  The one I've been keeping running with an under sized motor
> pulley.  Never mind the debacle with the after market warranty company,
> or the repair shop who reported the repair complete without ever
> visiting my shop.  Even with a much smaller pulley it still trips the
> thermal protector from time to time.  Mostly because I think it has to
> run longer when it cycles on with the smaller pulley, and when I have
> several machines running, all of which use air for various things, it
> has to cycle on more often.
> 
> Mostly I can get by for now.  In the last few months I've only had the
> thermal trip on me 4-5 times and I run the shop every day.  Still
> sometimes I run complex operations which can be several hundred lines of
> code on a single tool.  This gives me the opportunity to run an errand
> or go in the house for lunch.  It would cost me more than the cost of a
> compressor if an ISO20 quick change spindle air seal fails and sucks
> coolant up inside the head as it cools down.  Okay the odds of that are
> slim, but it keeps me up at night anyway.
> 
> I had decided to bring my dad's compressor to my shop and keep the IR as
> just a backup.  They are functionally similar except the IR has a 5HP
> motor and the one at my dad's shop has a 7.5.    Well, that is still the
> plan, but those compressors are heavy and I don't have anything out at
> my dad's shop (60 miles away) to practically lift his compressor to load
> it into my truck or even onto my low trailer.  Oh, I am sure there is a
> chain fall out there, and there is an old a-frame laying out back, but
> his shop is a quonset hut.  No beams. The a-frame will eventually get
> moved to my shop, but its freaking heavy.  I don't even think I can
> stand it up without the help of a lift.  I know I used it in my youth to
> pull more than a couple V-8 engines.  Scooting it on concrete when its
> on its pads takes a little effort unloaded, and with a big block 360
> hanging from it a bit more effort.  Standing it up in the dirt and
> dragging it around... Anyway.  It will get done eventually, but not
> today or tomorrow.  When I do I'll probably trailer my tractor out there
> to do the job with its loader bucket.
> 
> I just ordered a 7.5 HP compressor duty motor for the IR.  IR actually
> sells a very similar compressor with a 7.5 HP motor on it at about 3.5
> times the price of this one.  Then, since I already know all the parts,
> I ordered a new hub for the original pulley to fit the 1-1/8 shaft on
> the new motor.
> 
> I quit screwing around with those 5HP motors.  Now I have not one, but
> two unused single phase 230V "5HP" spare motors.  Maybe I'll make a
> couple big belt grinders for erasing the bumpy spots on mountains.  If I
> make a belt grinder or three, which is part of my planned projects, I
> plan to use 3 phase motors for speed control, so not really with those
> 5s.  I guess I could build a sheave stack, but turning a knob is so much
> easier than moving a belt.  FYI:  I do have three belt grinders already.
>   a 1x30 and a 1x42 that I use almost everyday for conditioning and
> de-burring parts.  The third one is on a shelf...
> Bob La Londe
> 
> -------------------------------------
> Aircompressorsdirect gives 611 Lbs for a 7.5HP IR.
> 
> Just swap the motors??
> 

I considered that, but I want both compressors 100% or what's the point 
of having a backup.

I can haul heavy stuff.  Its just time consuming, plus the 2 hours (+/-) 
of road time.  Also, its going to take time to move one compressor in 
and the other out.  I am considering an "outdoor" compressor closet, and 
plumb in both compressors together.  Just have valves to shut one off 
from the distribution lines and only turn on one or the other.

That might actually be faster than a swap, and down time would be much 
less too.

Might see about some sort of transfer switch so I can't accidentally 
turn them both on at once.

It would be nice to get the compressor noise out of the back shop.

-- 
Bob La Londe
CNC Molds N Stuff


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