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jd2cylman said:
Somewhere there used to be a RDK matrix that said what delay worked in which motor. Or maybe I’m thinking of things that don’t exist for $500 Alex…
Click to expand...
Here is what I have, including the hobby line
Note I use RDK-34 to fill a standard delay well for plugged 54 mm motors. Wrap masking tape around it until it fits.

Aerotech delay kits, Hobby line style
HDK KITS for 18mm Motors
HDK-01 .281 D24-4T
HDK-02 .375 D24-7T
HDK-03 .407 D13-4W
HDK-04 .469 D24-10T
HDK-05 .500 D13-7W
HDK-06 .500 slow D13-10W
HDK KITS for 24mm Motors
HDK-07 .344 D15-4T E28-4T
HDK-08 .407 D9-4W F39-6T
HDK-09 .438 D15-7T E28-7T
HDK-10 .500 D9-7W F39-9T
HDK-11 .531 E18-4W F24-4W
HDK-12 .625 E11-3J E18-7W F12-3J F24-7W
HDK-13 .625 slow F12-5J
HDK KITS for 29mm Motors
HDK-14 G71-4R
HDK-15 .375 E23-5T G76-4G
HDK-16 .406 F52-5T G71-7R
HDK-17 .500 E23-8T F52-8T F40-4W G71-10R G33-7J
HDK-18 .531 F52-11T G64-4W
HDK-19 .562 E16-4W G76-10G
HDK-20 .657 G64-7W G33-10J
HDK-21 .657 E16-7W F40-7W G64-10W
HDK-22 .750 F22-5J F40-10W
HDK-23 .750 slow F22-7J
HDK-24 .750 G33-5J
HDK-25 G76-7G

Aerotech delay kits, High power style
RDK01 .314 G77-4R/LMS, G77R-S, H238T-S, H220T-S
RDK02 .375 G79-4W/LMS, F62T-S, F62T-S, G104T-S, H165R-S, H210R-S, H268R-S
RDK03 .438 G79-7/LMS, F37W-S, G54W-S, G79W-S, H128W-S, H180T-S, I200W,S
RDK04 .469 F20-4W/LMS, F62T-M, G77R-M, G104T-M, H238T-M, H220T-M
RDK05 .563 F20-7W/LMS, F37W-M, G54W-M, G75J-S, G79-M, H128W-M, H97J-S, H180W-M, I200W-M
RDK06 .594 F62T-L, G104T-L, H238T-L, H220T-L, H165R-L, H210R-L, H268R-L
RDK07 .656 F37W-L, G54W-L, G79W-L, H128W-L, H180W-L, I200W-L
RDK08 .719 G75J-M, H97J-M
RDK09 .406 G67R-S, H242T-S, I357T-S, I300T-S, I435T-S, H148R-S, I218R-S, I285R-S, I366R-S, J420R-S
RDK10 .469 H242T-M, I357T-M, I300T-M, I435T-M, I600R-M
RDK11 .500 G61W-S, G67R-M, H123W-S, I161W-S, I211W-S, I284W-S, J350W-S, J570W-S
RDK12 .594 G61W-M, H123W-M, H242T-L, I161W-M, I211W-M, I357T-L, I300T-L, I284W-M, I435T-L, J350W-M, J570W-M
RDK13 .625 I195J-S
RDK14 .656 H73J-S, H112J-S, I154J-S, H148R-L, I218R-L, I285R-L, I366R-L, J420R-L
RDK15 .719 G61W-L, H123W-L, I161W-L, I211W-L, I284W-L, J350W-L, J570W-L
RDK16 .781 H73J-M, H112J-M, I154J-M, I195J-M
RDK17 .531 H148R-M, I218R-M, I285R-M, I366R-M, J420R-M
RDK18 .500 G77-10R/LMS, G77R-L, H165R-M, H210R-M, H268R-M
RDK19 G77-7R/LMS
RDK20 G79-10W/LMS
RDK21 .432 J460S,J800S,K1100S
RDK22
RDK23 .547 J460M, J800M, K1100M
RDK24 .593 J180S
RDK25 .616 J275S, J415S, K550S, J540M, K695M
RDK26 .639 J460L, J800L, K1100L
RDK27 .685 J180M
RDK28 .708 J275M, J415M, K550M
RDK29 .761 J315L, J460X, J540L, J800X, K695L, K1100X
RDK30 .778 J180L
RDK31 .803 J275L, J415L, K550L
RDK32
RDK33
RDK34 1.014 J90S, J135S, K185S
RDK35 1.106 J90M, J135M, K185M
RDK36 1.175 J90L, J135L, K185L
RDK37 .524 J540S
 
Just to port the discussion from that other thread into this one, there are a bunch of us agreeing that we would really like to see some bigger 24mm motors in the Hobbyline cases. Like 24/80 and/or 24/100. Apparently, there have been some prototype cases made.

Personally, I don't need to match the 6-grain CTI, but some nice 75-80 N-s reloads along the lines of CTI's 3-grain (hypothetical, if you could get them) offerings would be a great step up from the 57N-s of the F35. And HAZ-free shipping would put smiles on many faces. Past that, I think the 29/40-120 case does a great job.
 
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SolarYellow said:
Just to port the discussion from that other thread into this one, there are a bunch of us agreeing that we would really like to see some bigger 24mm motors in the Hobbyline cases. Like 24/80 and/or 24/100. Apparently, there have been some prototype cases made.

Personally, I don't need to match the 6-grain CTI, but some nice 75-80 N-s reloads along the lines of CTI's 3-grain (hypothetical, if you could get them) offerings would be a great step up from the 57N-s of the F35. Past that, I think the 29/40-120 case does a great job.
Click to expand...

I agree , a full F / baby G motor in 24mm would be great for the park.
 
SolarYellow said:
Personally, I don't need to match the 6-grain CTI, but some nice 75-80 N-s reloads along the lines of CTI's 3-grain (hypothetical, if you could get them) offerings would be a great step up from the 57N-s of the F35.
Click to expand...
120Ns would be more what I'd like, but I'd probably buy an 80Ns case if it were offered. I've not yet seen a reason to buy the 60Ns case, but I have five of the 24/40 cases. (I think they are breeding behind my back.)
Past that, I think the 29/40-120 case does a great job.
Click to expand...
Can't fit seven of those in a three inch body. 😂
 
SolarYellow said:
Just to port the discussion from that other thread into this one, there are a bunch of us agreeing that we would really like to see some bigger 24mm motors in the Hobbyline cases. Like 24/80 and/or 24/100. Apparently, there have been some prototype cases made.

Personally, I don't need to match the 6-grain CTI, but some nice 75-80 N-s reloads along the lines of CTI's 3-grain (hypothetical, if you could get them) offerings would be a great step up from the 57N-s of the F35. Past that, I think the 29/40-120 case does a great job.
Click to expand...
It would be great if the cases used the same closures as the 24/60 too, since the threads seem more robust. I wonder if it would even be possible to certify a 6 grain full G/baby H in 24mm…
 
I am pretty sure it was a RMS 24/120 prototype I saw at an event in Cambridge, MA that Gary was at in the mid/late 2000's. I really would love to see that motor be released. CTI has supply issues, and all their loads require hazmat. And another problem with CTI, is in order to get the loads I want, I'd have to order from several vendors, and I am not paying multiple hazmat fees :(. Seriously, RMS 24/80 and RMS 24/120 would be an instant purchase from me, just as the CTI 24mm cases were when they came out. I will probably sell my CTI 24mm cases if Aerotech releases these.
 
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davidb123 said:
It would be great if the cases used the same closures as the 24/60 too, since the threads seem more robust. I wonder if it would even be possible to certify a 6 grain full G/baby H in 24mm…
Click to expand...

Agreed on closures. CTI has gotten to 144Ns in their 24mm 6G, which is pretty close to a full G.
 
I'm having trouble finding the minimum current spec for the FirstFire series.

I've got a staged flight planned for LDRS with an I40 upper, and I've not fired a standard FirstFire with an eggtimer Proton and a 45C 2S Lipo before. The FF Mini, yes - works fine.

Nor do I have extras on hand to ground test.
 
Charles_McG said:
I'm having trouble finding the minimum current spec for the FirstFire series.

I've got a staged flight planned for LDRS with an I40 upper, and I've not fired a standard FirstFire with an eggtimer Proton and a 45C 2S Lipo before. The FF Mini, yes - works fine.

Nor do I have extras on hand to ground test.
Click to expand...
I would not try to use a first fire for a staging attempt. A dipped ematch will almost guarantee ignition if staging parameters are met.
 
An obvious brainstorm: Make a "full G" in RMS 29mm.

In the 29/180 case, the G75J Black Jack motor is just a little less in average thrust and total impulse than a DMS G80T. Fill it full of White Lightning, and you get 175 N-sec in the H128W.

Is there a propellant in the AT lineup that would enable the creation of something with 150-160 N-sec impulse without going over the 80 N average thrust limit? (Warp 9?) Or is this such an obvious idea that the fact there isn't already such a product answers the question as to whether it's possible/practical?
 
For Warp 9, you're thinking end-burning like the G69N? There's no 29mm Warp 9, so that's already a difficulty.

If you look at the 29/120, 29/180, and 29/240 motors it looks like it would be tough to do. The G75 is close, but gives up 25 potential Ns. The H97 is also close, but is a little too powerful. The other propellants don't seem that close to non-HPR parameters in those sizes with Bates grains.

FYI, CTI has what you're asking for in their 29mm 3G G54 moonburner, though, so perhaps a White Lightning moonburner is a possibility? Unless the user is bonding the grains to rebuild the single moonburner grain, though, it would be hazmat shipping for sure.
 
The 159-G54 is pretty well along the lines of what I was thinking. A little more average thrust might be nice. I also like the 144-G65 in 24mm.

Non-HAZ would be yuuge, but the simplistic notion behind the post was simply maximizing flight performance without getting into HPR rules. Maybe that just means G80T in the AT world, end of story. (Or the slow burn stuff if that's your game.)
 
jjwb22101 said:
I've been a bit worried about the F67C, since it's named the same as the F67W - I've always found the dual-naming of motors to be easy grounds for confusion in communication, and with both of those F67's being potentially good TARC motors, I can easily see some school finance person unfamiliar with rocketry accidentally order the wrong thing. I've had issues with the two G75 motors to that effect in the past, and with those one is single-use and one a reload!
Click to expand...
I just ordered some F67-6s from an un-named vendor, and instead received some of the new F67-6C classic motors. Not the same, likely easy to confuse the two.

Fortunately Rocksim says the classics should perform well in my 2 larger rockets, so I can at least use them. They ought to go quite a bit higher than the F67-6 White Lightnings I've been using, and the slower takeoff is appreciated.
 
I want to thank Aerotech for making quality motors! But I do want to mention that redline motors are hard to light- like VERY hard to light. I know a lot of people that went through several ignitors on redlines. You should look into that.
 
ljwilley said:
I want to thank Aerotech for making quality motors! But I do want to mention that redline motors are hard to light- like VERY hard to light. I know a lot of people that went through several ignitors on redlines. You should look into that.
Click to expand...
Dip the igniters in ProCast. Redlines fire right up without hesitation.

Hans.
 
ljwilley said:
I want to thank Aerotech for making quality motors! But I do want to mention that redline motors are hard to light- like VERY hard to light. I know a lot of people that went through several ignitors on redlines. You should look into that.
Click to expand...
Don't mistake 'takes a second or two to come up to pressure' as 'hard to light', which a lot of folks do.

I push the button on a LOT of AT reds, of all sizes 29-75mm. Like 20+ a year for the last 5 years or so, and have used lot numbers all over the place, so to my mind age in factory packaging isn't much of a factor, either. I assemble the motors sometimes months in advance, and store them in simple zip lock bags in a plastic bin in my hobby room between launches if I don't get to use them.

Maybe, MAYBE 1 in 10 will chuff once upon first ignition, but that's it. The rest light and go, always with stock igniters as included! Same holds true for everyone elses reds that I see launched, about the same initial chuff once in a while, but certainly NOT multi chuff or needing multi igniters! Seems to me that the shorter and smaller reds are less likely to have any issues more than any other formula.

And that's at sea level-ish and humidity usually so thick that you have to push the fish out of the way to get to the pads.

I'm NOT that lucky, so it's gotta be a storage thing or something! I've seen it enough to know it happens, but no more often than greens or anything else, but I've never had to use a second igniter, AT, CTI, or Loki red.
 
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