Hypertek hybrid rocket motors use a fill stem instead of a fill line, the X system allows the stem to drop at ignition instead of forcing the rocket to work it's way off.
comment Post a Comment
You must be logged into RocketReviews.com to post a comment.
Sponsored Ads
Vintage Model Rocket ... (eBay)
Estes Vintage Model ... (eBay)
Vintage Estes Magnum ... (eBay)
lakebyin Rocket Launcher ... (Amazon)
Lyxaof Nuclear Bomb ... (Amazon)
Estes Generic E2X Flying ... (Amazon)
NEW VINTAGE ESTES SPACE ... (eBay)
Vintage Semroc SLS ... (eBay)
Vintage Estes Aim-9 ... (eBay)
b Vintage ESTES Model ... (eBay)
Reed's Rocket Nut ... (eBay)