Very nice altimeter choice 😀

I use one, and it hasn't failed me yet. Very easy, very reliable. I can't be there on June 10, but good luck with your altimeter adventures 8)

Thanks man, maybe I'll get a look at one of your installs at the next launch after June 10.

Batman,

Chris has a very nice and pricey PML piece IIRC which has the additional feature of a remove before flight pole.

But besides scoping out other installs much is to be found on the www. Google e-bay and rocket or something. Info central has some info if I recall but lots of L3 cert designs and the like on the web to look at. Some things to consider which will influence the ultimate design:

Where are the break points of the AF you'll be using? How will you attach the Ebay to the AF? Do you want an arming switch or remove before flight plunger like safing mechanism?

I won't be there on the 10th. Things I've learned the hard way, and surely just one way among countless:

use BP election charge holders--can be copper plumbing parts, PVC or whatever but should firmly hold whatever cannister/vial you plan on using--and attach these with screws (preferably) to the bulkheads.. The Ematch wires should be screwed to dedicated terminals similar to those on the altimeter itself--Radio Shaft carries these small blue PC mount screw terminals for a few bucks for a blister pack of 4 locally. These also should be glued to your bulkheads. Drill a hole large enough to accomodate the PCB pins and wires soldered to these pins and pull the wire thru before hot glueing or epoxying in place. This will form a gas tight seal.

Life gets even easier if you terminate these wires with deans/molex style connectors. These will mate to Molex connectors carried via short wires from the apo/main altimeter terminals. You can of course leave out this step, but once you've battled with the task of screwing the wires to the altimeter which is easy in itself...the hard part is you now have several extra inches of wire which needs to fold up on itself as you close the ebay and not become ensnared on the rail(s).

Just easier to have the quick fit connectors and minimal wire. Alternatively you can cut a large access window in the ebay. Remember tho this needs to be completely covered by AF so as not to expose the electronics to EC gasses. It also makes lining up your vent hole trivial. But the single best piece of advice I can give, make your first e-bay in 2.6 inch or larger size and splurge for a long section--this will steal room from your recovery compartments, but oh so worth it. Better to have to undersize recovery slightly than use bag recovery--as in trash bag. Then after much practice/learning 38 mm will not be such an ordeal. 2 cents from the peanut gallery,
JS

Actually, I jerry-rigged the remove before flight pole with $2 of steel rod from lowes and $.80 worth of switches from radio shack 😆

Still, it is a decent alt bay, but all of them should have many of the same components. You could take away the aluminum piece, and keep everything else, and it would still work. It has always worked for me 😀

Chris,
Knew that handiwork was yours--sorry if I implied otherwise.
JS

Not a problem. Actually, the implication was kind of funny to me - that you would imply that the $2 worth of materials was instead a high quality PML component worth a LOT more money 😆

I will change it around a little bit pretty soon, but the overall layout and mechanisms should stay the same. Just one minor change to make it easier and faster to prep.