Airflow problem with Paasche Talon GF


Young Tutorling
Hi to you!

I recently bought this Talon GF with 0.38mm needle.

I'm using Vallejo Model Air with my Badger 150 with no problems at all, (no thinning, 2 drops of Airflow Improver).

But with my Talon, it seem to clog very easily. I'm not thinning it as it should be Airbrush ready but I'm adding 2 drops of airflow improver. I'm using a standard compressor with water filter at 20 PSI. I'm not able to get a smooth airflow and coverage as it seems that the paint is not coming as it should be.

I can see a very small spray cone maybe 8mm compared to a 20mm and more when testing with water and cleaner...

Is it possible that Model Air needs to be thinned with this Airbrush? Or higher pressure? Should I use bigger needle?

And just before that I was shooting Vallejo Polyurethane Primer and it clogged relatively fast. Will never use it again in this airbrush... And yes I've cleaned it very carefully, dissambled completly to remove that crap...

It seems a little bit like at 2:33. My concern is about modelair... although it should not be thinned out, I think that this could be the issue...
It seems a little bit like at 2:33. My concern is about modelair... although it should not be thinned out, I think that this could be the issue...
how do you mean it should not be thinned out?

Googling around I can see people are thinning modelair

Very few ‘airbrush ready’ paints spray well unless you have high pressure and blocking in colour. Most people will thin in varying degrees depending on what the wanted outcome is, the finer the detail or the lighter coverage required you’ll drop the PSI and reduce the paint
I've done some research and I also found that ModelAir (which is advertised airbrush ready without thining) may required some thinner. With my badger 150 I've done an entire F-18 (1:48) without reducing the paint so I though that it would be the same with my new Paasche. So after all research I will give a try with some reducer. Will give you updated! I really appreciate your help!

And maybe a stupid question but, it there is some effect to put the cup cap on or not?
I've just done some tests:

15 PSI
2 drops of flow Improver
10 drops of paint
2 drops of thinner

Spray cone is OK, coverage is OK but the paint seem to be realy overdiluted. As I'm was spraying on wood the paint was just absorbed and others coats resulted on good overall coverage. On plastic maybe I should drop off the pressure to get a better smooth surface...

15-20 PSI
2 drops of flow improver
10 drops of paint
1 drop of thinner
was a little bit too high,

Spray cone was narrow and got some splatter, I rised the pressur to 20 PSI all was better.

I think, correct me if I'm wrong; Improver acts also as a thinner. 1 drops for 10 drops of paint should be enough added with around 20% thinning. And the more I thin the more I can drop the pressure and do better fines lines...? The more I raise the pressue the less I need to thin to get larger spray cone?

And for my Badger 150, I just running it at 15-18 PSI with just 2 drops of flow improver with no thinner, maybe the Paasche is just more sensible to thinning ratios? For the badger I use the 0.5mm, is there is a big diffreence/effect between a 0.38mm and 0.5mm needle size?
The simple answer is yes. It's a constant juggling act. If you change anything, you need to adjust everything else. If you go to a smaller needle size, you either need thinner paint or more pressure, or both.
Thanks for your help! I think I've found something interesting in thinning ratios. I'm looking for a bigger needle combo for my paasche as I think it will better fit my needs for airbrushing.

Again I appreciated your help and knowledge!!!
I hope you have found your answers.

From what you've written it seems you are using your airbrush to paint scale models. That is something I use mine for. If this is the case I would suggest that you pick up some cheap plastic spoons to test on. It should give you a better idea how the airbrush is working and give you a good idea what the color will look like. I'd think it would be better than the wood you sprayed.

I spray automotive lacquers so I sand the spoon(s) first, primer, then paint them. I don't use water base paint on my models so I can't help you there.