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skelstar
11th January 2008, 14:49
Hey, Super Cheap are selling a 40lt 2.5HP compressor that puts out 112 L/m (I think) + 20m hose for $140. Would this be OK for spray painting?

TKDSKIP
11th January 2008, 15:23
The S/C compressor is only 112 litres per minute. To spray a reasonable area I have been told you need double that, but it may depend on how much painting you have to do.

banditrider
11th January 2008, 16:57
When I bought my one (similar specs) from Mitre10 the girl who sold it to be said that they do not recommend them for spray painting. Fine for pumping up the bike's tyres though.

And that's exhausted my knowledge of compressors...

Dealer
11th January 2008, 17:09
spray painting requires a constant flow of air, which means your supercheap compressor will be running hard out trying to keep up. the cheaper compressors dont like this, so if you do buy it, i would recommend spraying small areas at a time, or you will burn it out pretty quick. another thing you can do is install an extra tank, most commonly made from old LPG cylinders. this will allow you to spray longer before the compressor kicks in.

T.W.R
11th January 2008, 17:11
Free air delivery is the important factor when considering compressors for spraying and tank capacity of 16cfm or more

Paul in NZ
11th January 2008, 17:54
Depends what you are painting and what paint you are using...

a car - erm - nope...

a bike tank in cheapo laquer - no sweat.... piss in, just use a low pressure gun (I use a touch up one)

cowpoos
11th January 2008, 19:11
probally not Sean...for exact details of what to get PM mr me... you need a constant volume at constant pressure...that cheap compressers do not achieve!!

crazefox
11th January 2008, 19:36
probally not Sean...for exact details of what to get PM mr me... you need a constant volume at constant pressure...that cheap compressers do not achieve!!

Na man they are shit.If you want to paint anything mate you are more than welcome too come to my place and use my gear

cowpoos
11th January 2008, 22:00
Na man they are shit.If you want to paint anything mate you are more than welcome too come to my place and use my gear
or crazyfox....

skelstar
11th January 2008, 23:11
Cheers guys. Yeah for my Dad who already has a paint gun, but needs a comp. Will recommend something else.

Madness
11th January 2008, 23:14
Cheers guys. Yeah for my Dad who already has a paint gun, but needs a comp. Will recommend something else.

12 - 15 cfm true free delivery is a minimum entry size for spraypainting. This (http://www.trademe.co.nz/Business-farming-industry/Industrial/Compressors-pumps/auction-135052212.htm) is a good buy for the current price, providing is aint knackered of course.

What?
12th January 2008, 09:07
Hey, Super Cheap are selling a...

Super Cheap in every sense. Like most of what they sell.

Ixion
12th January 2008, 14:35
On a related topic. Can anyone tell me where (if anywhere) one can obtain nowadays nitrocellulose spraying lacquer ("Duco").

Why is that that the simplest , most basic workshop essentials seem impossible to procure nowdays.

Skunk
12th January 2008, 14:55
I've got one of these (http://www.powertoolcentres.co.nz/catalogue-general.php?Qwd=./catalogues/general&Qif=nov07-page12.jpg&Qiv=thumbs&Qis=FS) Spitfire 12.50's and I'd say it is marginal if you want to spray continuously. Not that I've tried mind you. But I'd say that's the minimum.

Waylander
12th January 2008, 15:14
The one I'm using to paint my bike is smaller/less powerfull than that one and is working just fine.

crazefox
13th January 2008, 08:37
On a related topic. Can anyone tell me where (if anywhere) one can obtain nowadays nitrocellulose spraying lacquer ("Duco").

Why is that that the simplest , most basic workshop essentials seem impossible to procure nowdays.

i dont think they make it anymore

Hoon
13th January 2008, 10:33
The one I'm using to paint my bike is smaller/less powerfull than that one and is working just fine.

Yeah I got a similar compressor and for bike fairings its fine. I only do a few panels at a time anyway and with fairings it's no problem to pause between them if nesc. Wouldn't want to paint a car or anything though.

I slapped on a proper filter/regulator which is set to about 30 psi for my HLVP gun so as long as the tank pressure stays above that I'll get a constant supply.

I must also mention that I am no pro. I only paint to fix up my race bikes cheaply so only need to satisfy myself. My compressor is enough for me any flaws are usually due to my lack of skill/experience rather than the compressor itself. If you are a good spray painter then yes you will need the best tools to apply those skills but these small compressors are fine for small jobs for small people.

geoffm
14th January 2008, 20:16
Second what Hoon said. I did a CF bedford van with mine, and it was a bit on the small side. OK for bike bits tho.
I like my "wellmade' gravity feed spray gun - much easier to clean than a suction feed gun and better for spray primer with a big enough tip. Balance takes a bit of getting used to though/
I am no pro tho. MiT (aka manukau polytech) used to do spraypainting night classes - money well spent if you are planning on doing a decent job. Preparation is everything, and really, really boring....
Geoff

zooter
12th February 2008, 18:16
The supercheap website diy help guy helpfully mentions they are rated for 25% duty. ie pump for 1 minute, rest for 3 and it shouldn't blow up. I need something to run a plasma cutter on light duties.

crazefox
12th February 2008, 18:52
The supercheap website diy help guy helpfully mentions they are rated for 25% duty. ie pump for 1 minute, rest for 3 and it shouldn't blow up. I need something to run a plasma cutter on light duties.

Yip they are not the best. But you get what you pay for

zooter
15th February 2008, 03:24
I took a punt on the ones on Trademe at the moment, 100 bucks buy now. He had a few left yesterday.

skelstar
15th February 2008, 07:39
Be interested to see how that goes. Linky?

huck farley
15th February 2008, 07:59
On a lighter side. You could always use her indoors vacuum cleaner.

bungbung
15th February 2008, 10:12
I've had a sc 2.5hp compressor for about 3 years.
I hadn't heard anything about the duty cycle, I have used mine to spray ornate plaster ceilings and the compressor is running non-stop. I have been fairly religious about changing the oil and haven't had an issue so far. It's gets bloody hot, but the thermal cut out never has.

Apart from the ceilings the biggest thing I have used it on for painting are doors. The air capacity for that purpose is acceptable when using HVLP guns.

For use with air hungry tools, it is annoying having to stop and wait for the pressure to build up.

Still, for $100 - $150 depending on specials...