It looks like there are 2 little notches in the casing.
The color of the clay is slightly different than that of an Estes motor. Also, the Quest clay looks smoother. Like they used a finer grit than Estes. I guess I never realized the Quest nozzle was clay, it looks more like plastic to me.
I wonder what kind of chamber pressures these operate at as opposed to the AT EFG....
That lip deserves a patent. Simple but functional design feature. it's like a reverse thrust ring. Instead of keeping the engine from going up into the airframe, it's designed to keep the nozzle was being blown out by the chamber pressure.They are indeed pressed clay and yes the lip on the inside end of the case is a patent pending feature that helps retain the nozzle. The max operating pressure of the Q-Jets is generally 300-500 PSI. The casings can handle up to about 1,500 PSI.
I'm slowly but surely getting there. LolIf you are really curious, you could rough it backwards from F=m_dot*v_e+p*a
Are the new White Lightning Q-jets a new formula? Easier to ignite than the reload formulas?
That lip deserves a patent. Simple but functional design feature. it's like a reverse thrust ring. Instead of keeping the engine from going up into the airframe, it's designed to keep the nozzle was being blown out by the chamber pressure.
For years I had often thought that Estes should epoxy a small thrust ring in front of their BP engines so they could run at higher chamber pressures and get a little bit of additional Isp, ( and maybe bring out some high thrust BDEF BP motors) because their current pressed clay nozzle only has a mechanical bond to the paper casings, which prevents them from doing that. Molding it into a casing is a masterstroke.
whats the date codes on those three? I'm used to seeing that speckled clay one.Estes nozzles are not all the same, although it may seem coarse, the surface of the nozzle throat is smooth anyway. I guess it depends on what brand kitty litter they used...
These three are all different...
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I've never seen Estes E15 or D11 motors that are plugged before.
Where can you buy them?
Does Estes make any other plugged motors?
The date codes of the D11 and E15 are visible in the image. The D11 is 00 20 11 (November 20, 2000). The D15 is 24 X 9 (September 24, 1993)whats the date codes on those three? I'm used to seeing that speckled clay one.
I've never seen Estes E15 or D11 motors that are plugged before.
Where can you buy them?
Does Estes make any other plugged motors?
I see "Poopy Clay".Estes nozzles are not all the same, although it may seem coarse, the surface of the nozzle throat is smooth anyway. I guess it depends on what brand kitty litter they used...
These three are all different...
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I see "Poopy Clay".
D11-P Date code is 00 which is year 2000. When Star Wars Episode 1 came out, Estes went into hyper-production of certain motors for the mass merchandised kits and some other motors were discontinued. ALL motors were made with a horrible new clay that was powdery and white.Which one is poopy clay?
Otherwise the current clay is great.
I forgot, what were the D11-Ps supposed to be used in?
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