Compressor False Advertising or.....?
- Thread starter FTG-05
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t4runner
Well-known member
I guess your talking about the 2.25 KW rating as opposed to the 5hp claim on the graphics.
2.25 kw = 3.0 hp
2.25 kw = 3.0 hp
454ragtop
Well-known member
Must be one of them thar nuclear 5 HP motors that only draws 15 amps on 120 volts.....
Yep, I posted the pics (and the poll) here because it was here on GJ that I learned to look at the motor spec sheet vs. the advertised hp ratings.
kythri
Well-known member
Older compressor, yeah?
The manufacturers got smacked down for doing that:
https://web.archive.org/web/20051119175438/http://www.aircompressorsettlement.com:80/
They still seem to be exaggerating things today, but not nearly as egregiously.
The manufacturers got smacked down for doing that:
https://web.archive.org/web/20051119175438/http://www.aircompressorsettlement.com:80/
They still seem to be exaggerating things today, but not nearly as egregiously.
metlmunchr
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And that 2.25 kW would happen for about 3 seconds before it bursts into flames.
7.5 amps on 240 Volts is right at 1.5 hp. A legitimate 5hp motor will pull 23 to 25 amps on 240V, depending on the specific motor.
7.5 amps on 240 Volts is right at 1.5 hp. A legitimate 5hp motor will pull 23 to 25 amps on 240V, depending on the specific motor.
finn
Well-known member
That ship sailed and was corrected by class action lawsuits against the industry ten or more years ago.
I guess you missed the party.
I guess you missed the party.
Ji m
Well-known member
□scumbag ad writers one upping each other instead of making a better product
Stuart in MN
Well-known member
SPL means special. It's common on things like air compressors, where the air compressor company buys the motors from an outside source specifically for use on their products.
As for the fake horsepower ratings, vacuum cleaners went through the same deal. A similar situation was the amp rating on car stereos years ago - they had all sorts of made up ratings, like 'instant power amps'.
As for the fake horsepower ratings, vacuum cleaners went through the same deal. A similar situation was the amp rating on car stereos years ago - they had all sorts of made up ratings, like 'instant power amps'.
seber
Well-known member
Sears has done that as far back as I can remember on all power saws. They called it instantaneous horsepower when called out. I don't believe they were ever sued.
metlmunchr
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Briggs and Stratton lost a class action suit on over rating the hp of small engines. I noticed a thing about it online 2-3 years back. Got the serial number off of the motor on a lawn mower someone had given my son. Mailed it in and got either $25 or $35 in return.
Same thing shoulda been done with all the other liars as well.
Same thing shoulda been done with all the other liars as well.
Lelandwelds
Well-known member
Big box stores and consolidation are bad enough. Toss in the dumbing down of America and you have a problem.
redmondjp
Well-known member
Yes, and now they have obfuscated the lawn mower engine power levels even further with their "torque rating" numbers. Makes about as much sense as the "cleaning power" numbers used on vacuum cleaners.
But alas, the marketeers are more fluent in bovine excrement and make more money than engineers do.
I too went through an excruciating and extremely detailed engineering analysis when I bought my compressor all those years ago.
To whit:
I got married and my coworkers at work got me a HD Gift card as a wedding gift. I took it to HD and looked at the compressors price tag. Look at CPT, look at GC; look at CPT, look at GC; look at CPT, look at GC.... you get the picture. When they matched, that's the compressor I bought.
Like I said, excruciating and extremely detailed.
sweet victory
Well-known member
I too went through an excruciating and extremely detailed engineering analysis when I bought my compressor all those years ago.
To whit:
I got married and my coworkers at work got me a HD Gift card as a wedding gift. I took it to HD and looked at the compressors price tag. Look at CPT, look at GC; look at CPT, look at GC; look at CPT, look at GC.... you get the picture. When they matched, that's the compressor I bought.
Like I said, excruciating and extremely detailed.
If you're like me...I bet you made an excel sheet too!
greg86z28
Well-known member
They call that rounding up in the marketing department.
They are just avoiding putting the continuous hp rating on the motor. This way thsy can use the instantaneous, peak brake, BS, hp for one nanosecond, of the motor to claim it is a 5 hp compressor. Putting the motor's real continuous hp would contradict that. Just loke the 6.5 PEAK hp of the shop vacuum. Maglight used to use the wattage rating of the led to claim it was a 1 watt flashlight. We measured the current x the battery voltage and the bulb was running no where near 1 watt. The compressor pump probably can handle a real 5 hp motor for a day or two.
Sent from my SM-G900V using Tapatalk
Sent from my SM-G900V using Tapatalk
redmondjp
Well-known member
My best guess at what 'SPL' stands for is: Special Purpose Listing. Maybe a motor/compressor industry insider will see this and chime in.
The funniest explanation I just found online: Somebody's Probably Lying.
The funniest explanation I just found online: Somebody's Probably Lying.
454ragtop
Well-known member
I wouldn't consider it to be a 'lie'
PEAK it has PEAK written right next to the hp figure... As others have pointed out, it's the same kind of thing you will find on a number of different products. Ya, it could probably hit 7hp as it was bursting into flames, but who cares
What is the old saying - buyer beware
Finky198
Well-known member
^^^thats so true...
Our true 7.5hp Weg motor draws 30 amps running, but puts out aprox 24 cfm the industrial stuff seems true to the numbers, but anything else is fair game for bull
numbers across all the specs. All of our other small compressors have totally made up numbers it quite if you ask me... You just have to know what your looking at... and if it suites your needs.
Our true 7.5hp Weg motor draws 30 amps running, but puts out aprox 24 cfm the industrial stuff seems true to the numbers, but anything else is fair game for bull
numbers across all the specs. All of our other small compressors have totally made up numbers it quite if you ask me... You just have to know what your looking at... and if it suites your needs.
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CGT80
Well-known member
There would be no difference at all, just as powering a motor that requires 15 amps from a 50 amp breaker wouldn't change how much amperage the motor requires.
That pump only requires what the over rated motor makes, power wise. If you changed the pulley size and increased the rpm of the pump, it would take more hp to run, and would likely give up soon.
Take a pump that actually requires 5hp and try to run it on that over rated motor, and the smoke will likely come out.
I had a sanborn compressor that was labeled either 5 or 6 hp. It made 10 or 11 cfm at 90 psi, per the label and sucked.
My new compressor is a decades old WABCO with a baldor 5hp motor. This pump will put a load of 30 amps on that 5hp motor. The pump is rated at 17.2 cfm at 175 psi. An online calculator says it puts out 20 cfm average based on fill time for the tank. The pulley I upgraded to, has it spinning at slightly higher speed than what the manufacturer lists in the chart. Seems they didn't lie about the output. Of course this is an industrial quality pressure lubed pump and a new similar unit would likely be $1,000 or better from what I have seen, with a complete compressor running $2500 or more.
Maybe people buying commercial quality compressors are smarter than those who are likely to buy what the home improvement stores have and the companies took advantage of the general public/DIY group.
I saw a 17cfm at 90 psi compressor at HD today. The motor was bigger than the over rated 3hp units that were slapped with 5-6 hp, but it still wasn't anything like a baldor 5hp. The one on my compressor weighs 108 pounds and has something like a 1-3/8" shaft. The pump was pretty dang big on this unit, so maybe the numbers were accurate. It is still smaller than I would ever consider for my main compressor.