Numatx rivet squeezer

[DougRDU]

Love mine for sure!

Mine didn't come with two rams like Dan N. but I have been able to get the right spacing with washers and/or different thickness in the sets.

Oh...and I had to bleed mine more than twice to get it working correctly. If you find you cannot set those #4 rivets, no matter what PSI you crank it to...bleed it again. And maybe again.

[SonexGuy]

Can someone explain to me how you supply air to the foot pedal? There are no instructions at all about an air source. The hose is 1/4" (and the unit did not come with any hose for the air supply; the instructions just show a little pig tail and call it "shop air inlet"). The foot pedal end uses a one-touch fitting. How do you connect that to a compressor? And what psi do you set? There was nothing on the web, nothing in the instructions, and nothing on the Numatx web site.

Any help would be appreciated.

[A36Lee]

Originally Posted by SonexGuy

Can someone explain to me how you supply air to the foot pedal? There are no instructions at all about an air source. The hose is 1/4" (and the unit did not come with any hose for the air supply; the instructions just show a little pig tail and call it "shop air inlet"). The foot pedal end uses a one-touch fitting. How do you connect that to a compressor? And what psi do you set? There was nothing on the web, nothing in the instructions, and nothing on the Numatx web site.

Any help would be appreciated.

Here’s my setup. Hose came from Home Depot (compressor tank drain hose) and added small regulator at other end.

I have been using 48 psi for 3/32 and 75 psi for 1/8.

[DanNiendorff]

Originally Posted by SonexGuy

Can someone explain to me how you supply air to the foot pedal? There are no instructions at all about an air source. The hose is 1/4" (and the unit did not come with any hose for the air supply; the instructions just show a little pig tail and call it "shop air inlet"). The foot pedal end uses a one-touch fitting. How do you connect that to a compressor? And what psi do you set? There was nothing on the web, nothing in the instructions, and nothing on the Numatx web site.

Any help would be appreciated.

I suggest a small regulator mounted next to the foot pedal (so it can be easily adjusted), with a push on fitting to go from the 1/4 NPT to 1/4 OD poly tube. This can run to the pedal. I used push on fittings and 1/4 poly tube for all the pedal fittings, and on the intensifier. You will need to experiment with a few rivets to get you PSI for a correct set for each diameter. But once you know it will stay the same.

As for the hook up, here is a diagram of the valve function from Nitra (who makes the pedal):

https://cdn.automationdirect.com/sta...nfootpedal.pdf

And a you tube link for a basic explanation of similar drawings, in case they are unfamiliar:

https://youtu.be/bXXL-0sf8gs

Also the Numatx docs page - probably what you already have?

Hope that helps......

[SonexGuy]

Originally Posted by DanNiendorff

Also the Numatx docs page - probably what you already have?

Hope that helps......

Yeah, the problem with the Numatx docs is there is ABSOLUTELY NO INFORMATION about the air supply, or how how you connect it, or how you use it. Weird!

[SonexGuy]

Originally Posted by A36Lee

Here’s my setup. Hose came from Home Depot (compressor tank drain hose) and added small regulator at other end.

I have been using 48 psi for 3/32 and 75 psi for 1/8.

So you took the one-touch fitting out of the foot pedal, and installed a standard threaded pneumatic fitting in its place?

[DanNiendorff]

Originally Posted by SonexGuy

Yeah, the problem with the Numatx docs is there is ABSOLUTELY NO INFORMATION about the air supply, or how how you connect it, or how you use it. Weird!

Yes, understood. That is where the Nitra document becomes helpful. Essentially there is an air supply line (which should be in the center) and two output lines. One output line pressurizes the squeezer in the open position, and the other in the closed position. The unpressurized line is vented to allow the piston to move. These positions pressurize opposite sides of the piston. I would suggest connecting the air supply (about 50-60 PSI for starters) to the center position. Connect the two intensifier connectors to the outboard ports on the pedal. Then see what happens…. If the squeezer is closed and opens with pedal action, then your intensifier lines are backward - just switch them. If the squeezer is open and closes with pedal action then you are all set and nothing to change. Once the lines are correct you can experiment with PSI to achieve full rivet set for #3 and #4 rivets.

That’s it in a nutshell. The Nitra pedal doc schematics will lead you to the same setup plan, but avoid the trial and error.

[A36Lee]

Originally Posted by SonexGuy

So you took the one-touch fitting out of the foot pedal, and installed a standard threaded pneumatic fitting in its place?

I don't recall what if any one-touch fittings were pre-installed, but the center hole (mine is marked N) is the inlet air hole, as seen in the pic I posted. It is standard 1/4" NPT.

[SonexGuy]

Originally Posted by A36Lee

I don't recall what if any one-touch fittings were pre-installed, but the center hole (mine is marked N) is the inlet air hole, as seen in the pic I posted. It is standard 1/4" NPT.

Thanks! I got my from Flyboy Accessories, so it came pre-assembled

[SonexGuy]

Thanks for the input. I got it all set up and working tonight. Did the whole rear spar of the horizontal stabilizer Really slick, and perfect rivets every time.