How can I stop my rocket from tumbling?
I have been entering the realm of high powered rocketry and have been having trouble with my rocket frame design. My rockets accelerate from the ground at 20 m/s2 with a custom built rocket motor which weighs 80 grams, the problem I have is that the rocket spins head over tail after take off at around 10 revolutions per sec. I suspect that the design is too tail heavy...
The specifications for the rocket are;
Fins 9 by 5 cm 90o triangles x 3
Width 5 cm
Any help will be praised appropriately.