Pop rivet tool rivet keeps breaking11/13/2023 ![]() ![]() While it is certainly true that a Q rivet made of plated steel, stainless steel, or Monel would meet or exceed the strength of a same sized AD rivet, such a substitution should only be made after consulting with the aircraft designer and after considering potential dissimilar metal corrosion concerns. Just for the sake of clarity, do not casually use a substitute blind rivet of a different material just to gain strength. One advantage of CherryMAX rivets is that they come in standard sizes and 1/64-inch oversized for holes that have been damaged. However, probably not a problem is not the same as never a problem, so it would be prudent to consult with your kit maker or airplane designer before making such a substitution. Since most rivets are loaded in shear, it is probably not a problem to use the CherryMAX as a replacement. This makes it much stronger in shear than a 1/8-in. A 1/8-inch aluminum CherryMAX rivet has a shear strength of 664 pounds and a tensile strength of 285 pounds. ![]() If we need a 1/8-inch blind rivet to replace a 1/8-inch AD rivet, we have another possibility-the CherryMAX rivet. ![]() ![]() In all cases, when substituting one type of rivet for another, it is best to run it by the airplane designers to be sure they agree with the deviation from their design. Most kit manufacturers will also allow the next size larger Q rivet as a substitute for an AD rivet, (1/8-inch Q rivet for an AN470AD-3 rivet), but this should be verified on a case-by-case basis. Monel blind rivets also work well with stainless steel or titanium. Stainless steel Q rivets would work well for assembling a stainless steel firewall in lieu of using driven Monel rivets. Q rivets are available in steel, aluminum, stainless steel, and Monel. In a pinch CherryMAX rivets can be installed using a standard riveter, but that would not fall under best practices. N and Q rivets can easily be installed with any commercial blind rivet tool, but CherryMAX and CherryLOCK rivets are best installed with a special tool designed just for these stronger rivets. In between commercial and aircraft blind rivets, we have Q rivets that are not strong enough to replace the same sized AD rivets, but do possess some structural strength and high-quality characteristics. They range from N rivets, non-structural commercial rivets, to Cherry MS, CherryMAX, and CherryLOCK structural rivets, plus similar rivets by other manufacturers. However, there are many places where non-structural blind rivets may do the job quite well.Ĭherry Aerospace, Avex, Avdel, Emhart, POP, and others make a wide selection of blind rivets in various materials for many commercial and aircraft uses. Thus some may be used for structural work, but others definitely not. Some of these are aircraft quality, but many are not. There is a host of blind rivets in the marketplace, so a buyer must be careful to get the right rivet for the job. On the other hand, the typical solid aircraft rivet must be bucked, so access to the back side is vital to its proper installation. In other words, it can be installed in a “blind” hole. What is a Blind Rivet?Ī blind rivet gets its name from the fact that it can be installed in a hole that goes into a space that is inaccessible or not visible to the installer. In addition to their use in basic aircraft structures, blind rivets also have many non-structural applications that are of interest to builders, among these securing baffle seals to engine baffles. A quick tour of vendors at the most recent AirVenture shows blind rivets being used in kits by CubCrafters, Murphy, RANS, Van’s, Zenith and more. While solid rivets remain the standard for most aircraft designs, the emergence of aircraft-quality blind rivets, also called pull rivets or sometimes POP rivets, has made it possible to save builders a lot of time as they put their planes together. It is no surprise, then, that many Experimental/Amateur-Built aircraft rely on these tried-and-true fasteners. They provide an excellent means of joining sheets of aluminum together in ways that are smooth and strong. Rivets have been popular fasteners in aircraft construction for a very long time and remain so today. Zenith uses a unique system for installing their blind rivets, so be sure to read the instructions and get the correct tools before starting your project. This simple design feature made it a good candidate for last year’s One Week Wonder project. This Zenith 750 on display at AirVenture was assembled with blind rivets. ![]()
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