Help me choose an air compressor :S

[WhiffySpark]

What pump and HP ?

I'll look tomorrow. 80 gallon tanks

 

[md21722]

I'm deaf and I can hear them cut on. They are in the back room and I can't hear anyone talking while they're running

I'll look tomorrow. 80 gallon tanks

The R15 at 5 HP spins 734 RPM, slower than a SB 705. At 7.5 HP the R15 is spinning 990 RPM and I'd consider it a loud unit.

If its the bigger V-pump, which is like 2 R15's in one, at 7.5 HP is spins 575 RPM and at 10 HP is spins 740 RPM.

Me thinks you might have a pair of 7.5 HP R-15's.

Champion R15 at 5 HP go to 1:10

This is the Champion Centurion at 7.5 HP. Its spinning 990RPM. Go to 2:04

I know it says Speedaire, but its made by Champion for Grainger.

 

[WhiffySpark]

This is what we have

 

[md21722]

Cool, that confirms it. They are the 7.5 HP R-15 screamers...

 

[AJ1978]

YEP THAT MAKES SENSE!!!
Seems the key everyone misses to NOISE is well PUMP RPMS.... The champion Centurion of the whole discussion will turn the slowest and with least amount of noise.

 

[WhiffySpark]

They scream but we never run out of air in an 8 bay shop. I'm sure there's a few hoses and fittings here constantly leaking too

 

[Theoctagon]

Well with my interest in low rpm air i looked further into saylor beall and on their sell sheets in the documents section they list an 80 or 120 gallon horizontal or a 120 gallon vertical with the 707 v twin pump and a 5hp motor running at between 455 and 510 rpms..... HMmmmmmm

 

[md21722]

I asked Saylor Beall about those last year. They told me they are about $1,000 more and they usually only sell a couple of year, usually to municipalities.

 

[Theoctagon]

I asked Saylor Beall about those last year. They told me they are about $1,000 more and they usually only sell a couple of year, usually to municipalities.

That is interesting, are you a dealer or just a curious mind like me? I wonder why so much higher.... The 7.5 hp with the 707 pump isnt 1000 more than the 5hp with the 705 pump. Just because of it being a low seller?

 

[md21722]

That is interesting, are you a dealer or just a curious mind like me? I wonder why so much higher.... The 7.5 hp with the 707 pump isnt 1000 more than the 5hp with the 705 pump. Just because of it being a low seller?

I am not a dealer. I was looking to upgrade my air system and called around. Got to compare same HP. They said the 5 HP 707 was about $1,000 more than the 5 HP 705.

Ultimately I went with a pair of 5 HP Champion R15's. One nice thing about the R15 is that it only weighs about 105 pounds so you don't need hoists or the strength of Andre the Giant. The 705 is about 220 and the 707 is about 338 per the specs I saw.

Here is a run video of the SB 705 done by Saylor Beall

Here is a run video of the Champion Centurion II at 2:50 :

Personally I prefer the slower turning Champions. The 5 HP SB with a 707 pump would be very nice, and you can always upgrade it if you need more air later. Here is the 707 pump at 10 HP:

Their after cooler is slick.

 

[Theoctagon]

I am not a dealer. I was looking to upgrade my air system and called around. Got to compare same HP. They said the 5 HP 707 was about $1,000 more than the 5 HP 705.

Ultimately I went with a pair of 5 HP Champion R15's. One nice thing about the R15 is that it only weighs about 105 pounds so you don't need hoists or the strength of Andre the Giant. The 705 is about 220 and the 707 is about 338 per the specs I saw.

Here is a run video of the SB 705 done by Saylor Beall

Here is a run video of the Champion Centurion II at 2:50 :

Personally I prefer the slower turning Champions. The 5 HP SB with a 707 pump would be very nice, and you can always upgrade it if you need more air later. Here is the 707 pump at 10 HP:

Their after cooler is slick.

I see what you are saying, i looked again, i was thinking the 705 5hp was less than a grand difference than the 707 7.5hp. and i was mistaken hah.

Was weight really that much of a factor in your purchase or was it more about the lower rpm of the champion?

 

[md21722]

I see what you are saying, i looked again, i was thinking the 705 5hp was less than a grand difference than the 707 7.5hp. and i was mistaken hah.

Was weight really that much of a factor in your purchase or was it more about the lower rpm of the champion?

I hate moving air compressors & didn't have a hoist and liked the slower running Champions, and no need for special tools to service, so it was a win-win-win.

The moving part went out the window when I bought a 120 gallon vertical 5HP R15. The tank itself weighs 400-425 pounds. It has 3/16" heads and a 1/4" shell. At first the 120 gallon looked YUGE but over time smaller tanks seem like babies.

 

[Theoctagon]

I hate moving air compressors & didn't have a hoist and liked the slower running Champions, and no need for special tools to service, so it was a win-win-win.

The moving part went out the window when I bought a 120 gallon vertical 5HP R15. The tank itself weighs 400-425 pounds. It has 3/16" heads and a 1/4" shell. At first the 120 gallon looked YUGE but over time smaller tanks seem like babies.

What do you do to use all that air?

On a side note where i work we have 550hp worth of air!

 

[md21722]

What do you do to use all that air?

On a side note where i work we have 550hp worth of air!

I have 10 HP on 240 gallons of tank. Here in Colorado we have to downrate for altitude, so it turns out to be the same as 7.5 HP at lower altitude. Grinders and stuff like that really eat the air. I've tried the electrics and just don't like them. The tank setup is just because one is on a 60, the other is on a 120, and I have another 60 which keeps the air dry because I didn't get them with after coolers. It's really nice having the air storage, because the compressors cycle less often.

Some people buy old IR trailer pull air compressors for their blasting needs!

 

[Theoctagon]

With all the shop work we have been doing i havent been able to make a final decision yet.

On a side note i found a 325 and 230 pump from quincy for 250 bucks that "valve work" wish they were closer to look at.

 

[pcmeiners]

Had a new Curtis Masterline heavily damaged in Sandy; was not my first choice anyway. Got a decent price on an almost new QR325 about 6 months ago, went for it. "Used" is the best value.

"I don't care for the Quincy "no bull" warranty which requires you to buy an expensive maintenance kit with your compressor."

Love my QR but the warranty is filled with "Pure Bull". If I was Quincy I would be too embarrassed to write/advertise the warranty.

The maintenance kits are not a requirement to maintain your warranty, but high priced scams. If you read the warranty linked below carefully (with a bit of legal background), you are NOT required to purchase these kits to maintain your warranty. Using genuine parts/oil, and regular maintenance intervals is required along with complying with some nonsense paper documentation by the purchaser is a requirement. The brochures/literature imply you need to purchase the kits; implying something does not make it a requirement.
Why do companies treat customers like sh*t using nonsense warranty demands/implications?, it is bad for business. Actually if you comply with the actually warranty terms, it is a good warranty, could be better; could be a lot better for Quincy if they weeded out a few of their nonsense requirements which makes them a bit scammy.

As to the kits, this gave me a laugh......
" Any up front fee paid or kit purchased does not assure extended warranty coverage"

http://www.quincycompressor.com/warranty/assets/images/warranty-handbook 32011.pdf