[chris mitchell]

After installing the magnetometer in the rear fuselage (and checking that it worked and redoing my D-sub connector connections) we riveted on the rear top skin yesterday afternoon. All very satisfying, it was except that because of the magnetometer mounting it's impossible to get a bucking bar into position on four rivets that would go through the upper skin, lower skin and top longeron. The normal rivets to use in that site would be AN426 3-6. I thought I'd use a pulled rivet - but an MK319BS (which is only slightly oversize for diameter and would have done nicely) doesn't have the grip length - the head ends up inside the hole in the longeron. I see that there is a Cherry rivet available in the -3-6 size from a local supplier here in England, but not listed in the Vans catalog (http://www.lasaero.com/part.php?part=CCR264CS3-6). Has anyone used these? Any views on whether they would be suitable in this location? Anyone know of any other alternatives?

Thanks

Chris

 

[Mark Albery]

Chris,

The next length up from the 319 is the 321BS monel rivet with .020" longer shank.

You should be able to get them from LAS.

 

[GAHco]

Be aware

After installing the magnetometer in the rear fuselage (and checking that it worked and redoing my D-sub connector connections) we riveted on the rear top skin yesterday afternoon. All very satisfying, it was except that because of the magnetometer mounting it's impossible to get a bucking bar into position on four rivets that would go through the upper skin, lower skin and top longeron. The normal rivets to use in that site would be AN426 3-6. I thought I'd use a pulled rivet - but an MK319BS (which is only slightly oversize for diameter and would have done nicely) doesn't have the grip length - the head ends up inside the hole in the longeron. I see that there is a Cherry rivet available in the -3-6 size from a local supplier here in England, but not listed in the Vans catalog (http://www.lasaero.com/part.php?part=CCR264CS3-6). Has anyone used these? Any views on whether they would be suitable in this location? Anyone know of any other alternatives?

Thanks

Chris

The CCR264CS3-6 are not structural rivets they are designed to hold nutplates on. They have an open center when installed.

They may work for your application if it did not require a solid driven rivet and is not fastening something flight/structure critical.

We as many other stock this item.

http://www.gen-aircraft-hardware.com/images/pdf/rivetsnutplate.pdf