I dont have an answer for you about shear pin vs. rivet. I acquired some supplies from an old rocketeer and there were three bags of these pins. Was just trying to figure out how and when they are used. From: Rich Silva <richsilv@xxxxxxxxxxx> To: roc-chat@xxxxxxxxxxxxx Sent: Monday, June 18, 2012 7:20 PM Subject: [roc-chat] Re: Electronics Bays We’ve all read the discussions of “what shear pin to use”… What is the difference between a “shear pin” and a “plastic rivet” in your project? When your charges go off… Say in a situation where your bird didn’t go straight up… and maybe you have a bit of extra velocity during apogee deploy… How much shear force are those plastic rivets going to have to withstand? If they are up to it… Great… But do give it some thought… From:roc-chat-bounce@xxxxxxxxxxxxx [mailto:roc-chat-bounce@xxxxxxxxxxxxx] On Behalf Of Lesnick, Mike Sent: Monday, June 18, 2012 12:09 PM To: roc-chat@xxxxxxxxxxxxx Subject: [roc-chat] Re: Electronics Bays I have seen push pins used and even have a kit that came with and recommended push pins/plastic rivets. So, they are used and would work as well. I guess they are easier than what I described earlier because you just need to push them in and pull them out of a drilled hole and not mess with the brass inserts. Mike Michael Lesnick Axiom Healthcare Group 18135 Santa Lauretta Cir 714-594-5720 - Office Phone 714-323-5968 - Cell 714-968-7076 - Fax MikeL@xxxxxxxxxxx Fountain Valley, CA 92708 From:roc-chat-bounce@xxxxxxxxxxxxx [mailto:roc-chat-bounce@xxxxxxxxxxxxx] On Behalf Of Dave M Sent: Monday, June 18, 2012 11:49 AM To: roc-chat@xxxxxxxxxxxxx Subject: [roc-chat] Re: Electronics Bays I understand using the screws with the brass inserts. When would plastic rivets/push pins be acceptable? Or are they? Just want to know for my own info although I will be opting for the screws. From:"Lesnick, Mike" <mikel@xxxxxxxxxxx> To: roc-chat@xxxxxxxxxxxxx Sent: Monday, June 18, 2012 10:12 AM Subject: [roc-chat] Re: Electronics Bays This is my personal preference, I like to have the electronics bay completely removable. I usually use a bulkhead on the forward end of the ebay into which I install brass inserts that will accept small screws. Before putting the brass inserts into the bulkhead you fit the bay into the airframe and drill holes through the airframe and into the bulkhead. Those holes tell you where to insert the brass inserts. Once that is done you are ready to secure the bay the the airframe with three or four screws. Again, this is my preference and there are many ways to get the job done. Mike Michael Lesnick Axiom Healthcare Group 18135 Santa Lauretta Cir 714-594-5720 - Office Phone 714-323-5968 - Cell 714-968-7076 - Fax MikeL@xxxxxxxxxxx Fountain Valley, CA 92708 From:roc-chat-bounce@xxxxxxxxxxxxx [mailto:roc-chat-bounce@xxxxxxxxxxxxx] On Behalf Of Dave M Sent: Monday, June 18, 2012 9:22 AM To: roc-chat@xxxxxxxxxxxxx Subject: [roc-chat] Electronics Bays I have three rockets with diameters of 2", 3" and 4". I have purchased electronics bays for each. I want to get started experimenting with the electronics so I was thinking about setting up the 2" rocket with one or two altimeters, then do the timers, etc. before I put electronics into the 4". There's obviously not a lot of room in the 2" but hoping I can start with that. My question is this: should I secure the ebays with rivets or screws or should I glue them into the bodies? I kinda want to leave myself some options while I get the electronics down and dont have ebays permanently fixed. Is this a good or bad idea? Also, some of the ebay mfrs also talk about gluing one end of the ebays caps permanently to the ebay tube. Do I want to do this or leave both sides free (no glue) for easier access?