I am planning my first BIG rocket. My Aerotech G-Force 4 should arrive sometime this week along with a Big Bertha, a Der Red Max and a pair of Alphas all for the kids.
I am brand new to re-loadable motors but I have experience handling things that go, "boom." I am considering the Aerotech (or Rouse Tech) 29/40-120 hardware and an assortment of G impulse loads; G64-4, G71-4, G76-4 and I even see possibilities with a G53-5 which seems like it would give a nice slow liftoff for my viewing pleasure. I may even get a few F loads.
For the near future I will be launching at the local school athletic field so I want to keep altitude within reason. Are there any factors other than field size which would limit my target altitude? My New York Sectional shows my launch area is just outside DXR's class D airspace but within Class E airspace with a 700 foot floor. Does this mean I need to keep my flights below 700 feet?
I took a quick look at pictures of kit components of the G-Force 4 and immediately I want to use an engine retainer other than the flimsy little metal hook. I've read a lot on these forums which advocates simply friction retaining my engine. On the Apogee website I saw a nifty looking little engine retainer, the AeroPack, which looks like a really secure device. Has anybody here used one? I see that the G-Force kit also comes with a pot scrubber which promises to cool off ejection charge gasses. I've read nothing favorable about this pot scrubber thingy here and in fact I am under the impression that this device is best left out and its function replaced with wadding. Am I thinking along the right lines? Will I have to add additional protection for the shock cord i.e. Nomex or Kevlar sleeve for the few feet closest to the bulkhead? While I expect to find out for sure when the kit arrives I would like to know if I can build the rocket with a 38mm engine tube and use adapter rings for a 29mm motor. I would like to be able to fly big motors when I am ready although I would be completely content to stick with the impulses available in 29mm format.