Reviews

• Scratch CoStar By Peter Clay

  ( Contributed - by Peter W. Clay) CoStar HPR capable midpower rocket The CoStar should probably have been called "Understudy." My other rocket this size, G-whiz , has replaceable fins, and since I wasn't completely sure the concept would work, I built a backup booster section with fixed fins. G-whiz also has some internal details that move the payload area forward into the ...