Smithsonian Rocket Science Kit Conversion

[Patternflyer]

I received this as a gift recently and wasn't overly impressed by the reviews (flying off baking soda & vinegar). So I decided to convert it to 18mm.

So, here's the the flight video and conversion tutorial................

 

[mh9162013]

Great video!

 

[Patternflyer]

Thank you MH!

 

[jazzviper1]

You need to stiffen the fins. The fins flexing is what is causing the instability.