# Return of AT D21 ?

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#### shockwaveriderz

##### Well-Known Member
Hopefully Joe B. will read this post and add some coments. I was wondering if AT had any plans to get the D21 Su motor back into safety and contest status by next NARAM....preferably sooner so I can experiment with it for my D ELD models?

what say you Joe? Any plans for AT to bring this puppy back anytime soon?

#### DynaSoar

##### Well-Known Member
Originally posted by shockwaveriderz
Hopefully Joe B. will read this post and add some coments. I was wondering if AT had any plans to get the D21 Su motor back into safety and contest status by next NARAM....preferably sooner so I can experiment with it for my D ELD models?

what say you Joe? Any plans for AT to bring this puppy back anytime soon?
It's got my vote. Twice!

#### jetra2

##### Well-Known Member
*Both Hands Raised*

Does that count as two votes for the D21?

Jason

#### BlueNinja

##### Well-Known Member
*raises hand*
*raises other hand*
*gets tarantula and teases it making it raise all legs/arms*

I'd like to see em back!

#### GL-P

##### Well-Known Member
Do feet count????

I'd love to fly a D21!!!

#### Hospital_Rocket

##### Well-Known Member
I even talked my wife and mom into raising their hands....

Joe, It's worth some home baked cookies...

#### sandman

##### Well-Known Member
Hey...wait a minute...

Last year at NARAM 45 in Evensville, Indiana I checked into the RSO table with a D21-4 in my Commando Cody Rocket and nobody said anything

Was I NOT supposed to fly that engine there?

I did! It flew great too!

#### xenon

##### Well-Known Member
Originally posted by sandman

##### Well-Known Member
"Safety Cetified" OK.

"Contest Certified" No.

In other words: OK for sport flying, not OK for competition flying.

Originally posted by sandman
Hey...wait a minute...

Last year at NARAM 45 in Evensville, Indiana I checked into the RSO table with a D21-4 in my Commando Cody Rocket and nobody said anything

Was I NOT supposed to fly that engine there?

I did! It flew great too!

Yes I'd like to see them come back...but NOT at \$8 each please. Maybe something a little more reasonable.

#### GlennW

##### Well-Known Member
There is another thread on this in the low power section, and the prevailing thought seems to be that with Quest now set to produce 18mm SU D20's, AT won't bother with it. Don't know if it's true, seems that with the huge demand for these, there may be room for both, and certainly a little competition is good for us as the consumer! Last time Joe Burger was on here he basically said that there's been talk of doing it, but it wasn't first on the list. Well, just look at all these rocketeers (including me) just begging for these babies! Whoever produces them, whether it be Quest or AT will certainly get some great business out of it from me and others.

Glenn

#### astronboy

##### Well-Known Member
My gut feeling is that we have seen the last of the A 21. Why should they bother when QUEST will have an 18mm D20 available?

And who would be producing tha AT D20 for QUEST anyway????

Inquiring minds want to know!!

I would like to see more long burning 18mm reloads like the D8, or C4.

I am hoping that Apogee will at least re-introduce their medalist line of 13mm and 18mm SU motors

Phred

#### n3tjm

##### Papa Elf
I imagine producing the D21 is just an issue of buying the case material for it... they already have the propellant slugs that size (D24), and delay grains.... so I think that is the only thing holding them back...

Also, imho, when the D21's do come back... make some -10's.

#### shockwaveriderz

##### Well-Known Member
astron: as far as who will be making the Quest D20.....well lets do a little detective work and see if we can discern who that may be...

First would Quest invest money to make their own APCP motor making facility? I don't think so....not cost effective.....so who else makes composites...well there are AT and Ellis Mtn as candidiates as AMW and CTI make only larger AP motors.....There are No AP motors makers overseas.....so the only person I can see making them is AT or Ellis Mtn.... AT did make the AP motors for Apogee, still makes the Apogee E6/F10....so it makes perfect sense for AT to make the D20.....

#### rstaff3

##### Oddroc-eteer
I'd bet on AT also. But who knows. If Ellis made them the avg impulse would be lower and they'd be a lot longer than regular sized motors.

#### Initiator001

##### Well-Known Member
Originally posted by Rocketjunkie
I wish Aerotech would bring back the D8. GREAT motor!

Great-Yes. Easy to manufacture-No.

I'm pretty sure Scott Pearce and I made the last batch run of D8s ever produced. Very labor intensive (Compared to the D21). I have flashbacks to drilling the cores on each of the propellant grains...

#### saunassa

##### Active Member
Initiator
you mention that the D8 was difficult to mfg but that the D21 was not.
Do you know if there are plans to bring the D21 back and if so what the time frame is.

#### Initiator001

##### Well-Known Member
Originally posted by saunassa
Initiator
you mention that the D8 was difficult to mfg but that the D21 was not.
Do you know if there are plans to bring the D21 back and if so what the time frame is.