# More Q-Jets

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#### jqavins

##### Joseph Avins
TRF Supporter
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.

Be careful what you wish for , yes, we are planning on adding to the Q-Jet line

#### Nytrunner

##### Pop lugs, not drugs
Introducing the D80 Super Thunder?

#### neil_w

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

#### dhbarr

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

I can dream

13mm C

#### Maxwelljets

##### Well-Known Member
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?

#### Cape Byron

##### The BAR formerly known as Skippy-2
TRF Supporter
I wonder if the Q-Jets will ever make it to Oz? Lots to think about...

Okay, now I'm drooling.

#### jqavins

##### Joseph Avins
TRF Supporter
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.

#### Charles_McG

##### Ciderwright
13mm Bs are fine.

But you can make longer cases.

#### rharshberger

##### Well-Known Member
especially since I no longer build rockets with motor blocks.[emoji3]....
13mm Bs are fine.

But you can make longer cases.

#### Charles_McG

##### Ciderwright
especially since I no longer build rockets with motor blocks.[emoji3]....
Exactly.

#### jlabrasca

##### Well-Known Member
13mm Bs are fine.

But you can make longer cases.
Or a longer burning 13mm A. An A-10 with a 2 second burn would be fun to fly.

#### Initiator001

##### Well-Known Member
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. #### Initiator001 ##### Well-Known Member AeroTech worked on these thirty years ago. Too many casing issues. Tried 15mm diameter casing. Had to be a fast burn. Resulted in a 'C26' with around 8.5 n-sec. Still not successful. #### dhbarr ##### Amateur Professional 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.

#### Initiator001

##### Well-Known Member
13mm Bs are fine.

But you can make longer cases.
AeroTech made 13mm 'B7' motors for Apogee.
Much manual labor to produce.
Cost was $8/each back thirty years ago. Low sales and discontinued. #### Initiator001 ##### Well-Known Member Or a longer burning 13mm A. An A-10 with a 2 second burn would be fun to fly. Couldn't make an 13mm 'A' motor. The nozzle throat would be too small to fit an igniter through. #### BEC ##### Well-Known Member 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. #### BABAR ##### Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter Couldn't make an 13mm 'A' motor. The nozzle throat would be too small to fit an igniter through. MicroMaxx igniters are pretty slim #### dhbarr ##### Amateur Professional MicroMaxx igniters are pretty slim .... and nozzles aren't always that important :-D #### cerving ##### Owner, Eggtimer Rocketry TRF Sponsor TRF Supporter The Estes PSII igniters work greate with D10/D21's. I've done airstarts with them. #### Initiator001 ##### Well-Known Member #### Initiator001 ##### Well-Known Member MicroMaxx igniters are pretty slim It's easier to ignite BP than APCP propellant. #### BEC ##### Well-Known Member That's a lot of help! #### BEC ##### Well-Known Member 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 ##### Well-Known Member 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 ##### Joseph Avins TRF Supporter 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 ##### Well-Known Member 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 ##### Well-Known Member 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

##### Well-Known Member
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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