I have a huge rocket. :)

[DanFriday]

Nooo, It's not what you think. I just got my first rocket at the age of 51. lol
A $50 rocket for $5 at a garage sale.
Ever have one? Tell us about it here.
Here's a short video:

 

[Lordbob75]

I don't have any pictures of it (I guess I could go take one), but I custom built 2 rockets, 2 and 3 years ago.

First one was 6 feet tall, flew on an I, second was 7 feet and flew on am M.

~Lordbob

 

[A Guy]

Used to fire off rockets when I was a kid, the kit kind. They'd inevitably drift somewhere we couldn't go get them, or the chute would fail. They went surprisingly high though. Ahhh, memories. A Guy

 

[kucing13]

all i could play is firecrackers or homemade rocket. using bottles and water,then pumped it up. It's fun

 

[mickey megabyte]

I don't have any pictures of it (I guess I could go take one), but I custom built 2 rockets, 2 and 3 years ago.

First one was 6 feet tall, flew on an I, second was 7 feet and flew on am M.

~Lordbob

are the letters the shape of the trajectory?

 

[Zen00]

I think they're engine sizes.

I've only ever had A rockets, I always wanted a multi-stage rocket, with a camera, that was taller than me.

 

[Lordbob75]

I don't have any pictures of it (I guess I could go take one), but I custom built 2 rockets, 2 and 3 years ago.

First one was 6 feet tall, flew on an I, second was 7 feet and flew on am M.

~Lordbob

are the letters the shape of the trajectory?

As Zen said, they are motor desegnations. An A motor has about a 2Newton Impulse, and each letter up doubles the power range (more or less).

~Lordbob

 

[alphanumeric]

Yes the letters are the engine size. A rough approximation would be to equate them to battery sizes. Comparing an A cell to a D cell would be like comparing an A engine to a D engine. The D engine is bigger, better, faster. I played around with building and launching a few rockets years ago. I think the biggest was about 4 feet tall with a single D engine. lol I can remember thinking, this is just a little breeze and should be no problem, and then running what seemed like forever trying to keep up with the rocket drifting on the parachute.