Rocket Motor

[rmoss15]

I reckon it has the total thrust of one because it has twice the burn time of one.

Plus a D only needs 20Ns of thrust

[Ultra2040]

It's definitely D size but not half the thrust of one!

[cartmansos3xy]

hey u use a fuse now

[menu12345]

i could make a moto smaller then that and it will burn twice longer then yours'

[mcbombs]

that's because you don't make them right!!!

[13yroldmodder]

lol

nce

[mrkanker1]

no if you make slower burning propellent you make the exhaust hole smaller for more pressure,in whitch it makes more force.ive made one out of pen that burned for almost 23 seconds and got a small model rocket almost 2/6 of a mile into the air

[vusiliyK]

it doesnt look like a D size

[gobidee]

sweet