RC Tank Warfare community hobby forum

Uhhhhhhhhhhhhhh ...Canned...that's not a basic airbrush...it's a double action gravity feed ...the compressor you got is not bad..but the output pressure is a tad low... with that said though it's perfect for gravity fed airbrushes ...because that's what they are designed to work with ...Low pressure

I'm not sure how you have your gun set... if you take off the rear of the airbrush or if it has two knurled lock nuts... you can loosen those to adjust the needle ...for the absolute finest line ...you loosen the trigger adjustment screw in front of the trigger until the trigger tilts foreward... then you loosen the two knurled lock screws for the needle...all the way forward is your finest line ... tighten everything up...then adjust the trigger adjustment screw so the needle doesn't sit tightly against the paint port ...mix a little bit of paint ...to a 9 to 1 mix...10 being paint straight out of the bottle ...get a piece of newspaper or just scrap cardboard...push on the trigger till the needle on your pressure gauge ( on the water trap) stabilizes ..it should stabilize at about 10+ psi ..the red numbers... then slowly pull back on the trigger till the paint begins to flow...if it doesn't flow or spits..means your paint is too thick...dump it out and reduce it.. a little more...remember your paint mix adjustments ...then do the drill once again

Now your compressor... I have a Passche that is similar ...yours is just the generic version.... the pressure gauge / water trap activates the auto shut off... set it about 10 to 15 pounds above the stable reading you get when you push down on the trigger that way you don't waste electricity... as there is no sense in allowing it to pump so much...it also allows you to have a more stable stream of air

To get a wider pattern ... pull your trigger all the way back...you should get about a 1 inch flow pattern...this is good for large area painting... the fine line would be for outlining details

Try it Canned... let me know what happens

By all means ...remember to have fun...though it might get a little dodgy at times

and always flush your airbrush with solvent

ALPHA

PS. try it.. I'm sure you will have a bit of problems ... but I think I can talk you through it

Same setup I have, those compressors do 70 psi. That's quite high for spraying, Infact if you use Vallejo paints and spry at the pressure the paint will dry before it hits the tank causing a rough finish.

tomhugill wrote:Same setup I have, those compressors do 70 psi. That's quite high for spraying, Infact if you use Vallejo paints and spry at the pressure the paint will dry before it hits the tank causing a rough finish.

70psi at the trigger? in the hose maybe..I can set mine to cut off at a 120 psi... but that doesn't mean my pressure at my trigger will be a stable 120...the pressure in the line maybe.. at the trigger? ...I find it hard to believe... take your hose off Tom... and put your finger on the outlet...that's no 70 psi...My Millers put out more at the output than that diaphragm ...

ALPHA

Your probably right but even if the pressure is lower at the trigger it still causes the same effect on the paint.

tomhugill wrote:Your probably right but even if the pressure is lower at the trigger it still causes the same effect on the paint.

Not really...Higher pressure you have more control ... especially if your paint mixtures are inconsistent
Lower pressure means thinner paint mix..reason I said to Canned to test at 9 to 1...but you could have made it easier Tom since you have an Iwata airbrush which is probably more like his than mine....instead you come in and try to correct what I just said about the compressor ...when you should know darn well ..diaphragms don't put out

ALPHA

Hi Alpha, I'm just trying to help stu, we both have the same setup and I thought it might be useful info. FYI most modellers trying to get a high degree of precision and detail use high dilution and lower pressure.

The pressure needed depends on the brush and the paint. There is no 1 rule for all. But I support what Tom is saying, most modellers will go with a high dilution and low pressure. Some brushes only really work at low pressure, like Iwatas.

Hi all
I tend to spray at about 10to15 psi with most of my paints I use TAMIYA most of all so get an overall finish. Up the psi when I spray an overall colour or varnish. I use iwata guns both types.you seam to be getting it right canned well done.Brian...

Another vote for low pressure here. Pretty much the same as the others have been saying. 70Psi would be way way too high for me.

billpe wrote:The pressure needed depends on the brush and the paint. There is no 1 rule for all. But I support what Tom is saying, most modellers will go with a high dilution and low pressure. Some brushes only really work at low pressure, like Iwatas.

Yup.. nothing is perfect... especially with painting...companies use different mixes...so there is a lot of inconsistency ...Experimentation is the Key...also a lot of practice time getting to know your gun

ALPHA