If I have a rocket that uses 24mm Aerotech motors, can I use 24mm
Estes motors in the same rocket? I ask this because the Estes motors
are cardboard-encased and have the nozzle inside the tubular shape,
while Aerotech motors have the nozzle sticking out at one end.
They'll fit, but what is the rocket in question?
If it's too large/heavy, an Estes "D" may not have the
necessary thrust to launch it satisfactorily.
Otherwise, Aerotech 24x70 motors are identical in size
to Estes "D"'s.
"Zorfox" wrote:
Yes. Wrap a layer of masking tape around the rear of the Estes motor
(nozzle end) and use that as your thrust ring. Tape the outside of that
ring to the outside of the motor mount tube to retain it, over the joint.
Fly alot!
Drop-stage it with D12-0 taped to the upper motor.
Just On-Topic Jerry
The Cheetah and the Mustang I think are the only ones that are small enough
to fly with a D12-3. They do not need tape as they come with a adapter to
hold them. It is part of the kit.
I wasn't going to use a D, I would be using an Estes E as opposed to
an Aerotech E. There is no specific rocket I'm thinking of, it was a
general question.
E9's are even more problematic than D12's in heavy rockets - they have a very
low peak thrust, which makes them more suitable to lighter rockets. Also, the
heavier motor may shift the CG aft, making stability a problem.
The physical "fit" of the motor is just one of several issues to consider - it's
something that can't be answered "in general", more specific info is needed.
One other thing - Estes E9's are 90mm long; if the motor mount is designed for
70mm motors, you'll have to use tape for either a tight friction fit, or around
the
mmt tube and motor to hold it in place, depending on what's feasible in your
case.
But yeah, Aerotech 24mm motors and Estes 24mm motors fit the same "hole".
Wow, that would be a BIG mistake. The Estes E class is no where near as
"thrusty" as the Aerotech Es. Estes E motors are long duration low peak
impulse engines. The Aerotech engines are shorter duration and higher peak
thrust. What this means is that Aerotech engines will lift heavier weights
to flight stabilizing velocity more quickly. Frequently a rocket powered by
an Estes E will not be fully stable as it leaves the rod due to overly slow
acceleration. The end result is not pretty. The Aerotech Mustang will not
fly safely on an Estes E engine. I know this from personal experience. Been
there, done that, wish I hadn't.
Put a G55-15 in a 24mm min diameter estes rocket and watch it rain
cardboard!
yes, it'll fit, but just make sure your rocket is strong enough for the
motor and if its got those motor hook thingie thats got to go, same with
those motor spacers, the motor would be too long if they were in place. RMS
24/40 has no problems though.
Cardboard Machbuster with G motor! 5 4 3 2 1, lift off! SHOOO!
I'm singing in the rain...
im singing in the rain...
Im HAPPY again!
OOH theres the nosecone!
In many rockets, including the Mustang and CHeeta, the E9 would be a worse
choice than the D12. The off the pad thrust of the E9 is significantly less,
which can result in severe tipoff and cruise missile flights or ground
impacts. Worry less about the letter than the number after the letter.
Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD"
>>> To reply, remove the TRABoD!
Well, in the RMS casing there are the D9, E11, and F12, but I'd trust any of
them over an E9 for a heavy rocket.
Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD"
>>> To reply, remove the TRABoD!
Even that simple statement is not true. Several AT rockets WILL fly on the
D12-3. And many third party rockets (Launch Pad, LOC, etc) that use AT
motors will also fly on D12s and MAYBE even on E9s.
Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD"
>>> To reply, remove the TRABoD!
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