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jqavins

Joseph Avins
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Sorry if this is old news; it was new to me. I sent this to Quest:
I have just read that all Aerotech branded 18 mm motors have been discontinued in favor of the Q-Jet line. Yet there are - er, were - other motors that are very useful and now apparently not available. Are there plans to introduce any other Q-Jet motors?

I will particularly miss the D10 and D21 motors; the D16 is terrific but not punchy enough for some applications due to its progressive burn.

And I received this in reply:
Be careful what you wish for ;), yes, we are planning on adding to the Q-Jet line
 

neil_w

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Sounds fantastic! Shouldn't get too excited yet though, the Qjets took a pretty long time to get to market.
 

dhbarr

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Oh man, with modern propellant and materials an 18mm E could maybe return to take our tiny electronics for a spin?

I can dream :)
 

Maxwelljets

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It doesn't look as though the 18/20 reloads were discontinued, and I wasn't aware of any other single use 18mm Aerotech motors besides the D10 and D21. Were there others that I missed?
 

jqavins

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From my previous calculations, One should only expect one letter up for a given size. 18 by 70 should only go to d and 13 mm only to B.
 

Initiator001

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Oh man, with modern propellant and materials an 18mm E could maybe return to take our tiny electronics for a spin?

I can dream :)
I was at AeroTech when the 18mm x 3.875" E45 motor was introduced back thirty years ago.
A full 40 n-sec motor.
I think they were $10/each back then.
Discontinued for lack of sales. :(
 

dhbarr

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I was at AeroTech when the 18mm x 3.875" E45 motor was introduced back thirty years ago.
A full 40 n-sec motor.
I think they were $10/each back then.
Discontinued for lack of sales. :(
Mach1 18mm FG tubing, Bear AltiDuo SMT, TeleMini V3 -- rather a different landscape.

Routine mach-breaking Model Rocket flights would be fairly straightforward....

Like I mention, dreams. :)
 

BEC

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So, Bob, any idea what these new Q-Jets might be? I'd be happy with a full or nearly full D that sort of replaces the SU D10 and D21, especially if it's not a cranky to get lit as D10s are.

Of the current line, the C12s are, by far, my favorite.
 

cerving

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The Estes PSII igniters work greate with D10/D21's. I've done airstarts with them.
 

BEC

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The Estes PSII igniters work greate with D10/D21's. I've done airstarts with them.
My experience with D10s and Sonic igniters is about 1/3 to 1/2 success rate. D21s, being Blue Thunder, are another story and much easier.

Now a Sonic igniter on a 6-9V system rather than 12, that would likely work better. What did you use for electrical power in your air starts, Cris?
 

Theory

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this is good news and i have fond memories of the blue thunder E25s. an 18mm with super blue thunder or the new white lightning used in the F67/G74 would be cool.

all that said, i will miss the D10. thats a great little motor. expensive, yes, but boy howdy does it make for a nice flight!
 

jqavins

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I'd just like to see the D10 and D21 relabeled. With a CTI-esque BP pellet or some such to help light the D10. (A painted on layer of nitrocellulose?) Then start dreaming up new stuff.
 

Theory

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if im going to dream, i will look to the 18mm F55.

the large HP stuff is fun, but boy, high impulse 18mm is a darn good time too!!!
 

Alan15578

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I was at AeroTech when the 18mm x 3.875" E45 motor was introduced back thirty years ago.
A full 40 n-sec motor.
I think they were $10/each back then.
Discontinued for lack of sales. :(
I never bought any of those, but I wish I had. A pair of those would have been perfect for kicking a hybrid propellant rocket off the rail.
 

Alan15578

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AeroTech made 13mm 'B7' motors for Apogee.
Much manual labor to produce.
Cost was $8/each back thirty years ago.
Low sales and discontinued.
My recollection is a little different, but you should know. The B7 was not an AeroTech motor, it was an Apogee motor that TVM produced at the Aerotech facility, and it was designed by a third party. TVM was mainly leveraging AeroTech's pemits, but also the facilities and supplies, and probably some labor as well. TVM was on site in Las Vegas when his motors were made. The E6 and F10, are clearly Aerotech motors, some of which were relabeled as Apogee motors. Apogee and TVM is due a little more credit for some of those motors like the B7. Low sales may have been a factor, but they were discontinued when TVM decided not to continue production at the new AT facility. I don't know the nitty-gritty details of the Apogee/Aerotech operation.
 
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