> I have a Loc Legacy that I plan on extending with another length of 38mm x 34"
> tubing. This puts it at around 7 1/2' in length, giving it somewhat the look
> of a " Mean Machine." Has anyone tried this? If so how did it fly?
In general, doing this has no negative effects on the stability of the
rocket. As an RSO, I wouldn't even give it a second look.
You will end up with a long rocket that is difficult to transport. I'd keep
the separation point at the original tube end, and use a full LOC coupler
and make the whole top end a big payload section. Be sure the nose cone is
secure, using some #2 screws if necessary. And remember that very long dark
colored rockets can warp in the sun. Don't paint it black!
> Also, what have you used for motor retention, considering there is no room for
> t-nuts? I really don't want to use a motor clip because I would like to be able
> to fly from "F" to long burn "H's."
It can be done, but it requires the really small T nuts, and then you have
to file off the flange until the disk is nothing but a straight line. You've
only got between 3-4mm of space between the tubes to work with. Don't worry
if the centering ring cracks, just CA it well around the nuts and cover
everything with a layer of good epoxy.
Short of that, the other suggestion that comes to mind is to make a standard
type motor clip, but without the tab in the front that acts as a motor
block. In fact, bend the top tab OPPOSITE the conventional way, and use one
of the centering rings as a stop for this tab. Add tape and epoxy to keep it
from wiggling around just as you do with a small rocket.
Bob Kaplow NAR # 18L TRA # "Ctrl-Alt-Del"
Kaplow Klips: http://members.aol.com/myhprcato/KaplowKlips.html (baffle too!)
NIRA: http://www.nira.chicago.il.us NAR: http://www.nar.org