I have a Mini-BBX that is mostly complete. It has a few coats of primer and I still need to build the altimeter bay.
I am building the altimeter bay to hold an AltAcc so that effects how I will do it.
The altimeter bay will be built from a six inch length of coupler and will have the body tubes for the drogue and main attached with screws on either end.
I will cut a second piece of coupler two bulkhead thicknesses shorter than the first, slit it and remove enough material so it will fit in the first, and then glue it into the first. One bulkhead will be glued into place on the drogue side and the other will be held in somehow. I am not quite sure how I will do this yet because there just isn't enough space inside to get two threaded rods past the AltAcc. I can get one past it easily but it looks like two will be a trick.
I will only need two holes in the external body tube because I will recess the AltAcc mounting screws into the coupler.
If I ever decide decide to fly it to really high altitudes using the Terrier booster, I will build a new altimeter bay long enough to hold a tracking system. Hopefully one based on APRS, but that is another project.
For now I will use smaller motors with the first two staged flight planned for H242 to G54.
Another trick I have learned is to attach a wiring harness with connector to the AltAcc which I never remove. I started doing this after observing several people reverse the drogue and main connections. This way I figure I will only have to wire it correctly once instead of every time I install the altimeter.
David Schultz