CTI Pro24

[Donaldsrockets]

http://www.pro38.com/products/pro24/pro24.php

Looks like CTI will now be adding 24mm motors to their lineup very shortly. I'd say they'll offer D-G sizes.

I'd love a Pro24 Skid!!!:D

[MarkII]

Where will it end? I'm holding out for Pro13's and Pro6's. :D

MarkII

[sodmeister]

Very good news indeed ,although I heard they were going to..."maybe" eventually awhile back ,this will be great for my Launch pad kits.

Bring `em on !!

P

[Rocketcrab]

Cool. Nothing whatsoever against Aerotech, but competition in the marketplace is great for the consumer. That be us. :D

[cwbullet]

Great News!!!!! I am going to be their best customer.

[stickershock23]

Great News!!!!! I am going to be their best customer.


Yeah I think you are going to have to fight for that spot. :neener: the line is long and distinguished!

I am watching for the thread "I flew the first CTI 24mm"


These should be nice I have 3 AT24mm cases and I never use them, they are just to much hassle. I don't like spending 20 mins trying to prep a Low power flight, all those tiny parts, grease, ejection charges.. its a pain in the butt.

CTI24mm means I should be flying a lot more of my Low power fleet!

[GregGleason]

WOW!

This is great news for rocketry, especially if you can use the "dial your own delay" tool for the motor.

Can I say it again, WOW!

:D:clap:

[Initiator001]

Will the Pro24 motors be California classified? :confused:

I'm still waiting to hear if the Pro29 motors have been approved by the California State Fire Marshals office. :(

[DRAGON64]

The rumor is H and I reloads, but nothing is confirmed. Here is a teaser hint provided by Jeroen: http://www.rocketryplanet.com/forums/showpost.php?p=148952&postcount=15

[stickershock23]

Will the Pro24 motors be California classified? :confused:

I'm still waiting to hear if the Pro29 motors have been approved by the California State Fire Marshals office. :(


I am sure they will be it all has to do with the propellant they are made of! and I believe that all the CTI propellant is Cali approved. :clap:

[n3tjm]

it also has to do with size.

I cant wait! they'll be more expensive than Aerowrecks but at least I dont have to worry about crashing or torching any of my rockets anymore. Once these become available and I use up my Aerowreck stash, im going sell my cases :)

[Pem Tech]

As was riginally Posted by Jeroen_at_CTI on RP
Just a hint for now: please stop gluing motor blocks in your 24 mm rockets
;-).
Jeroen


I have been saying that since we started the bidness.
Someday, I said, you will want to fly longer motors in those kits.
But noooooooooooooo, almost everyone wants to defile their motor mount with these little buggers.

Don't say I didn't warn ya'!

:P

[Handeman]

it also has to do with size.

I cant wait! they'll be more expensive than Aerowrecks but at least I dont have to worry about crashing or torching any of my rockets anymore. Once these become available and I use up my Aerowreck stash, im going sell my cases :)

Let me know, if the price is right I'd be interested.



What's with the support@pro38.com link on the CTI site?
If you click on it, you get a page not found and when I sent an email, it got kicked back as undeliverable.

[stickershock23]

Let me know, if the price is right I'd be interested.



What's with the support@pro38.com link on the CTI site?
If you click on it, you get a page not found and when I sent an email, it got kicked back as undeliverable.

you need an AT 24mm case? I have three that I never use.... But ask yourself "Why?" first.. then save your money for quality..

[sodmeister]

As was riginally Posted by Jeroen_at_CTI on RP
Just a hint for now: please stop gluing motor blocks in your 24 mm rockets
;-).
Jeroen


I have been saying that since we started the bidness.
Someday, I said, you will want to fly longer motors in those kits.
But noooooooooooooo, almost everyone wants to defile their motor mount with these little buggers.

Don't say I didn't warn ya'!

:P

Hmmmmm...I now know what you mean.Gawd ,I`m such an idiot !

P

[The EGE]

you need an AT 24mm case? I have three that I never use.... But ask yourself "Why?" first.. then save your money for quality..

How much are you asking?

[MarkII]

The rumor is H and I reloads, but nothing is confirmed. Here is a teaser hint provided by Jeroen: http://www.rocketryplanet.com/forums/showpost.php?p=148952&postcount=15Great! IOW, nothing more for us non-HP certified fliers. But hey, we should be grateful for the 5 or 6 reloads (out of 200+) that they make that don't require certification to purchase. Maybe we'll finally get a few more bones tossed our way when they come out with the Pro13s and Pro6s. After all, we are only 3/4's (or more) of the hobby.

MarkII

[luke strawwalker]

Where will it end? I'm holding out for Pro13's and Pro6's. :D

MarkII

Is that a Pro Micro Maxx?? (grins)

Good luck on that... :)

OL JR :)

PS... I dunno... a 6mm "G" could be fun... LOL:)

[MarkII]

Is that a Pro Micro Maxx?? (grins)

Good luck on that... :)

OL JR :)

PS... I dunno... a 6mm "G" could be fun... LOL:)Yup, a reloadable composite propellant Micromaxx motor! :D Why not? :dark:

MarkII

[Pem Tech]

PS... I dunno... a 6mm "G" could be fun... LOL:)

:w:

Got my Vote!
A 6mm G sparkly would look great flying in my backyard.
:cheers:

[MarkH]

The rumor is H and I reloads, but nothing is confirmed. Here is a teaser hint provided by Jeroen: http://www.rocketryplanet.com/forums/showpost.php?p=148952&postcount=15

Maybe a baby H would be doable. An I would have to be like 18" or more in length.

[Initiator001]

The rumor is H and I reloads, but nothing is confirmed. Here is a teaser hint provided by Jeroen: http://www.rocketryplanet.com/forums/showpost.php?p=148952&postcount=15

I think 24mm H & I motors would have a very limited market.

[rcktnut]

Using H & I impulse motors in most 24mm. rocket kits on the market today would be equivalent to using C & D impulse motors in mini powered rockets :y:
Say good by!!!

[stickershock23]

Oh their is a market for them, a very small one. they would make some great min diam record breakers.. but I think on a whole. they should go up to a "F" motor, and maybe one or two small "G's" just for fun.

[Donaldsrockets]

I think 24mm H & I motors would have a very limited market.

I also think that 24mm H and I motors would result in a bunch of shredded rockets and several lost 24mm motor cases.;)

Although I'm sure flying an upscaled BT-50 sized Estes Wizard on an I motor would be a blast, literally.:D

[The EGE]

I don't see much use for 24mm motors bigger than a mid G (like the coming AT 24/120 case). 24mm rockets aren't build for H and I power.

That said, 24mm rocket to Mach 1.8? Way cool. :y:

[Adrian A]

Oh their is a market for them, a very small one. they would make some great min diam record breakers.. but I think on a whole. they should go up to a "F" motor, and maybe one or two small "G's" just for fun.

I'd love to see a full G in 24mm, especially if it's a long burn motor. The Ellis g-37 was a very cool motor, though it wasn't a full G. It's very doable to have a safe, Mach-busting 24mm rocket with dual-deployment and a radio tracker.

11kft on a long-burning full G is probably possible.

[stickershock23]

I don't see much use for 24mm motors bigger than a mid G (like the coming AT 24/120 case). 24mm rockets aren't build for H and I power.

That said, 24mm rocket to Mach 1.8? Way cool. :y:


I agree kits arent built for big 24mm "G's" but if they were available I but there would be people building some.

[n3tjm]

Im sure a LOC Starburst can take on two G's and H's :P

[New Ocean]

Kits were built for 24mm Gs... like the Machbuster.

[shreadvector]

Im sure a LOC Starburst can take on two G's and H's :P


I have one of those (built) in my garage. :D

[bobkrech]

You can definately make a 24 mm in the mid H-impulse class, but you are restricted by the amount of propellant you can physically put into the casing. It is hard to envision that you could reliably get I-impulse from a reasonable length 24 mm casing.

Based on a scaling analysis of the Pro29 and Pro38 propellent grain weight per unit length versus perfromance, we might assume that a Pro24 propellant grain would weight about 4.3 g/cm. If the grain length is the same as the Pro29 grain (1.75"), each grain would weight ~19.1 g and generate 40 N/S total impulse. A Pro24 using Classic propellant might be rated ~280H180, ~240H160 (6G), ~200H140 (5G), ~160G120 (4G), ~120G90, ~80F60 (2G) and ~40E30 (1G).

Bob

[ben_ullman]

You can definately make a 24 mm in the mid H-impulse class, but you are restricted by the amount of propellant you can physically put into the casing. It is hard to envision that you could reliably get I-impulse from a reasonable length 24 mm casing.

Based on a scaling analysis of the Pro29 and Pro38 propellent grain weight per unit length versus perfromance, we might assume that a Pro24 propellant grain would weight about 4.3 g/cm. If the grain length is the same as the Pro29 grain (1.75"), each grain would weight ~19.1 g and generate 40 N/S total impulse. A Pro24 using Classic propellant might be rated ~240H160 (6G), ~200H140 (5G), ~160G120 (4G), ~80F60 (2G) and ~40E30 (1G).

Bob

Then add in larger cores/nozzle due to the length and you have an even higher thrust shorter burn.

Ben

[MarkII]

I'd love to see a full G in 24mm, especially if it's a long burn motor. The Ellis g-37 was a very cool motor, though it wasn't a full G. It's very doable to have a safe, Mach-busting 24mm rocket with dual-deployment and a radio tracker.

11kft on a long-burning full G is probably possible.A long-burning G was something that I was interested in when I asked Jeroen about Pro24's in one of the many CTI threads several months ago. (It was either here or on RP - I can't remember where right now.) Mid-power Pro24's would be truly a delight. I realized after I posted yesterday that high power 24mm motors would be quite long and pretty impractical, so I take back what I said about CTI and Pro24's yesterday.

MarkII

[JDcluster]

This might shed some light on how long the motors might be:

https://blastzone.com/performancehobbies/store.asp?groupid=56



JD

[bobkrech]

Then add in larger cores/nozzle due to the length and you have an even higher thrust shorter burn.

Ben
I looked at the Pro38 and Pro29 motors and scaled it to 24 mm assuming the same grain lengths as the Pro29. This would be comparable to the Kosdon 24 performance.

It appears that the bores in the Pro29 and Pro38 motors are the same diameter because both series of motors develop approximately the same average thrust for a given length. This implies that the Pro24 will have a shorter burn time the Pro29 which in turn is shorter than the Pro38. This makes sense, preventing overpressurization, and allow the use of the same throat diameter.

If I am correct, then all the Pro29 propellant combinations could be used in the Pro24 line. What would be really interesting would be to use a dual thrust configuration using several grains of Classic or similar propellant for an initial high thrust kick and V-Max as an endburner for a long low thrust sustainer.

Bob

[ben_ullman]

I looked at the Pro38 and Pro29 motors and scaled it to 24 mm assuming the same grain lengths as the Pro29. This would be comparable to the Kosdon 24 performance.

It appears that the bores in the Pro29 and Pro38 motors are the same diameter because both series of motors develop approximately the same average thrust for a given length. This implies that the Pro24 will have a shorter burn time the Pro29 which in turn is shorter than the Pro38. This makes sense, preventing overpressurization, and allow the use of the same throat diameter.

If I am correct, then all the Pro29 propellant combinations could be used in the Pro24 line. What would be really interesting would be to use a dual thrust configuration using several grains of Classic or similar propellant for an initial high thrust kick and V-Max as an endburner for a long low thrust sustainer.

Bob


ok that makes sense. Wasn't sure how you were converting. But yes, it shouldn't be to hard to make the existing mixes work.

Ben

[stickershock23]

You also have to think they might be trying different grain configurations, At 24mm a bates grain burns awfully quick. a C-slot or offset core might be better. it helps keeps the burn times longer.

[Pantherjon]

All I know is that I can't wait! :) Have 1 Pro29, but I guarentee you that will NOT be the only one soon!

So, wonder how many Pro24 cases we can expect? 1G thru 6GXL as per the other lines?

[DRAGON64]

CTI has posted the first pic over at RP of the new PRO24 6-grain in action...Blue!!

http://www.rocketryplanet.com/forums/showpost.php?p=154496&postcount=38

[The EGE]

Only a G50? I'm hoping that's a full G; I've come around and decided that I want to see a baby H in 24mm :)

Imagine... flying a Viper IV on J impulse :dark:

[ttabbal]

CTI has posted the first pic over at RP of the new PRO24 6-grain in action...Blue!!

http://www.rocketryplanet.com/forums/showpost.php?p=154496&postcount=38


Looking good! I'll be interested in these. Particularly if they do some long burn motors. Or some VMax, I'm fine with glassing a small tube for 24mm HPR! :roll:

Some 24mm long burn F and G motors would rock. I'd also love to see some more action like the AT combo motors. 1 fast grain followed by some endburn grains. I really need to order a closure and a few of those reloads.

[ScrapDaddy]

Only a G50? I'm hoping that's a full G; I've come around and decided that I want to see a baby H in 24mm :)

Imagine... flying a Viper IV on J impulse :dark:

This is getting intresting......:eyepop:

[Initiator001]

Only a G50? I'm hoping that's a full G; I've come around and decided that I want to see a baby H in 24mm :)

Imagine... flying a Viper IV on J impulse :dark:

I flew a Viper III on G55s. :D

[green dragon]

I flew a Viper III on G55s. :D

F101's at NARAM 37.

that was fun, and fast :D

these look to become fun additions to the hoard.

[JDcluster]

I still have some:dark:



JD


I flew a Viper III on G55s. :D

[cjl]

I still have some:dark:



JD

I still have some F101s (4 of them, to be precise). I'm still trying to figure out what I want to fly them in...