VAF Forums

VAF Forums (http://www.vansairforce.com/community/index.php)
-   Tools (http://www.vansairforce.com/community/forumdisplay.php?f=53)
-   -   Flush rivet appearance quality? (http://www.vansairforce.com/community/showthread.php?t=154911)

Larry DeCamp 11-04-2017 07:32 AM

Flush rivet appearance quality?
 
I purchased a project with ALL skin rivets that LOOK like they were back riveted. I cannot reproduce these results. My ATS gun with high pressure and throttle valve closed as much as it will, still runs fast NOT THUMP THUMP. The rivet head looks shiny ( too much hitting? ). The project I purchased, the factory head looks like it came out of the bag and the little dent looks like never struck, and transition to skin is beautiful. What am I doing wrong ? What rivet gun will do better ?

wilddog 11-04-2017 07:49 AM

Larry,
What psi are you running and is your gun 2X or 3x?

Larry DeCamp 11-04-2017 08:30 AM

Gun is old ATS
 
I dont know what model ( 2x,3x, ?? ) I turned pressure up high, 80 lb+ thinking it would deform the rivet without "pecking" at a high frequency, but the the throttle valve is closed and it still hammers fast and I think is hardening the rivet in the process.

wirejock 11-04-2017 08:45 AM

Rivet gun
 
The gun should have markings. Post them. One of us should be able to decipher them.
Try a good mini regulator set at about 25 psi for #3 rivets. The little HF regulator is ok.
A good shop head on my Sioux takes about 2 second pulse. Also, try a strip of heavy packing tape over the factory head.

wilddog 11-04-2017 10:09 AM

Larry,
I use 22-25 psi with a 3x gun. I have a 2X but find it hits lighter and faster and requires more hits than the 3x does. The little knob thing on the handle just controls air flow, not pressure, so set your regulator. That is with 426-3 rivets, 470 takes a little more psi. If you are back riveting, it will take more pressure usually about 45 psi , I think, but that will vary with the back rivet thing, longer ones need more pressure. When you do 470 rivets try the little plastic things that go on the set, they help a lot.

BillL 11-04-2017 10:12 AM

Always use tape, that prevents the shiny look of the set rivet.

Kyle Boatright 11-04-2017 12:02 PM

35-40 PSI is what I use on 3/32 rivets. About 60 PSI on 1/8" rivets. 80 is waay too much.

az_gila 11-04-2017 12:12 PM

Quote:

Originally Posted by Kyle Boatright (Post 1216315)
35-40 PSI is what I use on 3/32 rivets. About 60 PSI on 1/8" rivets. 80 is waay too much.

Larry said in the OP that he has the throttle valve closed. Perhaps a test with the throttle valve fully open and less psi might be in order?

If it's a slow thump-thump I'm also wondering if the rivet gun is really an air hammer...

Kyle Boatright 11-04-2017 01:22 PM

Quote:

Originally Posted by az_gila (Post 1216319)
Larry said in the OP that he has the throttle valve closed. Perhaps a test with the throttle valve fully open and less psi might be in order?

If it's a slow thump-thump I'm also wondering if the rivet gun is really an air hammer...

I saw that, but I'm not familiar with a throttle valve.

az_gila 11-04-2017 02:47 PM

Quote:

Originally Posted by Kyle Boatright (Post 1216335)
I saw that, but I'm not familiar with a throttle valve.

Sometimes incorrectly called a "regulator" and sold by cheap places such as HF -

https://www.harborfreight.com/air-to...tor-68220.html

It's simply an inline variable restrictor. There is no pressure regulation going on in it for $3.59. :)


All times are GMT -6. The time now is 01:13 PM.