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Old 03-15-2016, 12:14 AM
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Simon
 
Join Date: Apr 2015
Location: Perth Western Australia
Posts: 112
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Quote:
Originally Posted by wjwj
...
KNSU motors needed to be heavier. It looks like Aerotech G-12's are available in 2-packs for just $21 - not bad (although I'd have to pay that annoying HAZMAT charge.)...


No problem at all.
KNSU doesn't have to be heavier, but there are trade-offs.
KNSU has higher density and lower ISP than APCP, so you can shoot for equivalent performance with a size/weight trade-off, or equivalent motor size or weight with a performance trade-off.
Either way there is a compromise. APCP is the dominant propellant for a reason

Are there any retailers within driving distance that regularly stock AeroTech?
If you can sweet-talk them into getting you RC reloads with their next order you might avoid the HAZMAT.
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