10-17-2003, 01:51:00 PM
I bought an HVLP gun to paint my car. I will be using PPG base / clear. The instruction sheets say to use 10 psi at the cap for an hvlp gun.
How do you measure psi at the cap? I am used to seeing a small pressure gauge between the air line and the gun, not at the cap.
10-17-2003, 04:08:00 PM
It will prolley be around 40- 50 PSI. Thats what mine is anyway. If you want to know for sure go to www.sharpe1.com. (http://www.sharpe1.com.) They have a nice forum there and you can tell Doctor gun what gun your using and what paint and he will give you the PSI and spray pattern and also the distance to shoot from. Hoep this helps .
10-17-2003, 04:09:00 PM
That is 40-50 PSI at the regulator that is right before the gun. Also the trigger must be pulled when checking it which should read 40-50 im guessing.
10-17-2003, 06:13:00 PM
Mmmmmm, don't be too sure about that, although there is a 50/50 chance 40-50psi will be correct. My Binks is 18 PSI at the tailstock to give a 10psi pressure at the nozzle, my other guns are around 30-40. You really want to read the instructions that came with the gun. They "should" specify the tailstock pressure. Otherwise you need to buy a pressure gauge that hooks on at the nozzle. An auto body supply shop will have them.
70 SS 454 CI Dynoed 650+HP (with old cam) All Aluminium Fuel Injected Small Block 708HP (based on Engine Analyzer) with new cam, 908HP with 200 shot of Nitrous Express go juice. 1208 if I put the big jets in it and want to bust rings.
10-18-2003, 04:31:00 PM
I use a devilbiss HPLV Garvity Feed gun and they make a Air Cap test kit that has a port on the cap that shows you how much pressure is at the cap. I shot going by the regulator at the base of the gun and wasn't happy with the results, so I got the air cap kit and saw that I wasn't getting near enough pressure just going by the gauge on the regulator.
78Z/28 done up like 81 383,350T...
80Z/28 in restification 355,350t vortecs....
1971 Firebird in waiting
2002 T/A WS6 A4
www.geocities.com/z28f41/ (http://www.geocities.com/z28f41/) AOL IM Secondgenmanic
10-18-2003, 09:15:00 PM
Only way I've found to get it right is to shoot some paint on scrap and adjust it until I get what I want.