[roc-chat] Re: Electronics Bays

  • From: Dave M <muldavea@xxxxxxxxx>
  • To: "roc-chat@xxxxxxxxxxxxx" <roc-chat@xxxxxxxxxxxxx>
  • Date: Tue, 19 Jun 2012 08:05:31 -0700 (PDT)

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? 

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