>i just bought an estes Terrier/Sandhawk(thanks Ross!)
>and wondered if anybody had some hints for conversion
>to a REAL 2-stage setup. the 'coupler' looks like it
>may be possible to adapt, except for the sustainer
I've done this, and flew it at the NSL back in February. I'm in the process
of drawing up the plans for Sprocket. What I did was to put an 18mm motor
mount in the Sandhawk, and replaced the "coupler" with an expended Aerotech E
casing. The capacitor and mercury switch used for staging are the adapter.
The only problem I had on the first flight was the chute hung up in the
Sandhawk. It staged perfectly, and was very stable. However, I modified the
kit a _lot_, so it weighs close to 13 ounces without motors. I used an Aerotech E15-4 in the Terrier, and a B6-6 in the Sandhawk for the first flight.
>additionally, actually _having_ a sustainer will require
>more weight in the nose. how stable is the sandhawk
>to begin with?
Actually, the extra weight of the electronics, plus the weight of the motor
in the Sandhawk require less weight in the nose. Estes supplies 2 packs of
clay for nose weight (at least, that's what mine had), and I used one just for
some added insurance. The Sandhawk will fly just fine without any nose weight,
and it's only included so that the CP/CG relationship is correct when you fly
>are there any larger models of this around? (HPR lite?)
Saw a scratch built one prang at the NSL. Ouch.