Checked ZDD built 1985 I think and has RAISED head rivets and not countersunk I can not establish if they are infact cherrymax but there is no electrolysis so would say no crap rivets
Ian M On 26 May 2011 20:47, Ian Williams <[email protected]> wrote: > Hi all, > > > > The “restoration” of the ex Thai Dimona ZK-GCB has unearthed some issues > which age has modified. > > > > Specifically, there are approx 80 rivets securing one aileron to the wing. > The hinge is stainless and uses aluminium rivets through a glass / carbon > layer into a 15mm alloy strip inside the aileron. > > It would appear the Thais had the ailerons off this aircraft and when > replaced used standard aluminium rivets. Being dissimilar metals, there was > significant corrosion under the glass/carbon layer and the 15mm aluminium > strip. (now repaired) > > > > However my question is the type of rivets …. The Dimona maintenance manual > says use Cherrymax CR 2248-3 (1/8 “dia) or Avdel Rivets Type 4002/3.2 * > 7.1 A1 LN 9314 (3.6mm dia) > > > > While that sounds quite specific, Spruce and specs show as stock .. > > CR2248-4-3 … I think the 4 represents 1/8” dia. And the 3 is the length > .. However that rivet is countersunk and the ones I removed were standard > Univ type heads. > > The hinge does not seem set up for CSK rivets. Has anybody actually had > the ailerons off their aircraft and if so what rivet type were used on > reinstallation. > > > > Best regards > > > > Ian Williams > > Drury > > New Zealand >
