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Joroen,

You guys have outdone yourselves. This is a fantastic selection of new motors and I'm going to have to go back to the drawing board and re-think the kind of rockets I want to build this year to accommodate them. Thanks for doing such a great job.


Sent from my iPhone using Rocketry Forum
 
CarVac said:
I think he needs a new sustainer first, though. IIRC his current one only fits a 6G case.
Click to expand...

Actually, the sustainer is stable on a 6XL motor. The pic shows a loaded N5800 in the sustainer. This didn't fly, though, because of clouds at Balls (at least, that's my story). It could be used as the sustainer motor on FCY - there would just be 6" or so of exposed motor tube. This would have to wait a year for me, though, as I have a 3-stage flight planned for this year.

I should think it would be relatively easy to set an N altitude record with this motor.

Jim

Tower.jpg
 
Thanks everyone for the enthusiasm. A big thank you to CAR/MC2 for turning this around so quickly - thanks André and Mario!

A little more background info on some of the motors and choices we made:

  • The Pro24-2G hardware and reloads were a request/suggestion from a TARC team. There will most likely not be any spacers. However, the introductory pricing of the Pro24-2G case is lower than that of the Pro24-1G case.

  • The two Pro29-1G motors were also certified with TARC in mind.

  • The Mellow propellant started out as "Mellow Yellow". However, as we reduced the burn rate, we lost our flame. We are open to suggestions for a fitting name for this propellant. The burn rate of the Mellow propellant is extremely slow (slowest ever used in an HPR motor?), but with the ProX igniter pellets the motors light very easily and can be used for clustering without problems.

  • The Pro38-5G and 6GXL Mellow motors are plugged. The very long burn resulted in too much variation of delay timing. Please make sure you have electronic deployment when flying these motors.

  • All -M reloads certified in this session are "core burners". The largest advantage is that there is no offset mass. The thrust profiles are more neutral then those of moonburners. More Mellow reloads are in the works.

  • The Pro75 boat tail can only be used with our XL style nozzle.

Looking forward to seeing all the new motors in action!

Jeroen
 
I sure hope someone has that 3G 29mm Mellow motor available at NARAM.....my 2.56x Nova Payloader (bashed from a Partizon kit) would love that long burn I think, and the ranch would hold it. I just hope 9s is a long enough delay.
 
Jeroen_at_CTI said:
The Pro38-5G and 6GXL Mellow motors are plugged. The very long burn resulted in too much variation of delay timing. Please make sure you have electronic deployment when flying these motors.
Click to expand...

Is it a standard 54mm forward closure on the L265 or is it the 1/4" threaded one of the K300 and other longburns?
 
xenon said:
Is it a standard 54mm forward closure on the L265 or is it the 1/4" threaded one of the K300 and other longburns?
Click to expand...

Threaded. But the L265 uses the regular phenolic liner, whereas the K300 uses a thicker phenolic liner. Closures can not be exchanged between these motors.

Jeroen
 
That longburn skid starts out with a big spike and a nice 250N burn...looks like it will easily handle an 11 lb rocket!

I think that's going to be everyone's new favorite motor.
 
mannyskid said:
16803-N1560:

Jim Jarvis, paging Jim Jarvis. FourCarbYen's new sustainer motor is on the line for you. :cool:

Manny
Click to expand...

Mannyskid, paging Mannyskid. That new 75mm tailcone aft closure is on the line for you... :p
 
WOW! Really impressive batch of motors. Can't wait to try out some of the Mellow and that longburn Skid! Any photo/video documentation on that LB Skid, Jeroen? It's a slower propellant formulation, not a different grain geometry, correct?
 
Jeroen_at_CTI said:
[/LIST]
[*]The Mellow propellant started out as "Mellow Yellow". However, as we reduced the burn rate, we lost our flame. We are open to suggestions for a fitting name for this propellant. The burn rate of the Mellow propellant is extremely slow (slowest ever used in an HPR motor?), but with the ProX igniter pellets the motors light very easily and can be used for clustering without problems.

Click to expand...


  • How about "Slow" for a name? I know Frank Kosdon used "slow" and "fast", but his propellants will always be referred to as "Kosdon slow" and "Kosdon fast". Yours would be "CTI Slow".

    Other than that:

    "Slow Poke"
    "Slow mow"
    "Everlasting"
    "Easygoing"
    "Easy Ride"

    That's all for now. Need some :caffeine:
 
Menkar said:
I check the NFPA rules yesterday, and the limit is 125g for model rocket if you are 18 or over.

André
Click to expand...

My apologies and thank you for catching the error. I was looking at NFPA 1127 2008 (which did apply at the time with 62.5 g propellant limit), but looked at NFPA 1127 2013 this morning and indeed you are correct. The 62.5 gram single propellant limit is history.

High Power Rocket Defined - NFPA 1127 (2013 Edition)

3.3.13.1 High Power Rocket. Arocket vehicle that (1) is propelled
by one or more high power rocket motors; or (2) is
propelled by a combination of model rocket motors having
an installed total impulse of more than 320 N-sec (71.9 lbsec);
or (3) is propelled by a combination of model rocket
motors having more than a total of 125 g (4.4 oz) of propellant
weight; or (4) weighs more than 1500 g (53 oz) with motor(
s) installed.
​

Model Rocket Defined - NFPA 1127 (2013 Edition)

3.3.13.2 Model Rocket. A rocket that (1) weighs no more
than 1500 g (53 oz) with motors installed; and (2) is propelled
by one or more model rocket motors having an installed
total impulse of no more than 320 N-sec (71.9 lbsec);
and (3) contains no more than a total of 125 g (4.4 oz)
of propellant weight. [1122, 2013]
​

So per this definition, the CTI 143-G33-MY-9A, CTI Pro29-3G motor is a model rocket motor flying in a rocket of no more than 1500 grams.

:cool:

Greg
 
Last edited:
GregGleason said:
My apologies and thank you for catching the error. I was looking at NFPA 1127 2007 (which did apply at the time with 62.5 g propellant limit), but looked at NFPA 1127 2013 this morning and indeed you are correct. The 62.5 gram single propellant limit is history.

High Power Rocket Defined - NFPA 1127 (2013 Edition)

3.3.13.1 High Power Rocket. Arocket vehicle that (1) is propelled
by one or more high power rocket motors; or (2) is
propelled by a combination of model rocket motors having
an installed total impulse of more than 320 N-sec (71.9 lbsec);
or (3) is propelled by a combination of model rocket
motors having more than a total of 125 g (4.4 oz) of propellant
weight; or (4) weighs more than 1500 g (53 oz) with motor(
s) installed.
​

Model Rocket Defined - NFPA 1127 (2013 Edition)

3.3.13.2 Model Rocket. A rocket that (1) weighs no more
than 1500 g (53 oz) with motors installed; and (2) is propelled
by one or more model rocket motors having an installed
total impulse of no more than 320 N-sec (71.9 lbsec);
and (3) contains no more than a total of 125 g (4.4 oz)
of propellant weight. [1122, 2013]
​

So per this definition, the CTI 143-G33-MY-9A, CTI Pro29-3G motor is a model rocket motor flying in a rocket of no more than 1500 grams.

:cool:

Greg
Click to expand...

Hah---you couldn't fly a single G33 in a rocket weighing 15 Newtons...
 
marcusSRG said:
WOW! Really impressive batch of motors. Can't wait to try out some of the Mellow and that longburn Skid! Any photo/video documentation on that LB Skid, Jeroen? It's a slower propellant formulation, not a different grain geometry, correct?
Click to expand...

It's a moonburner; photo of the grain in the lower center of the photo:

021_zpsc3ae38b2.jpg


Here's a few shots from the Thunderstruck5 drag race with the motor in question. Very nice motor; I enjoyed it immensely!

188_zpsae1a6945.jpg


189_zpscc811c1e.jpg


190_zpseaf01a3f.jpg
 
Menkar said:
A motor testing session was held at the Cesaroni Technology Incorporated facility in Gormley, Ontario on June 6-7th, 2014.
In total, 18 motors were certified with 103 firings over two days.
Click to expand...
These motors have been entered into ThrustCurve.org, so who'll be the first to upload sim files for them?
F70
F51
F32
F31
G33
H42
H53
I55
J94
J150
L265
K520
K600
K711
J145
M1101
L395
N1560

And André, I want to say special thank you for publishing the certification documents in a complete and consistent form and in a timely manner.
 
ECayemberg said:
It's a moonburner; photo of the grain in the lower center of the photo:

021_zpsc3ae38b2.jpg


Here's a few shots from the Thunderstruck5 drag race with the motor in question. Very nice motor; I enjoyed it immensely!

188_zpsae1a6945.jpg


189_zpscc811c1e.jpg


190_zpseaf01a3f.jpg
Click to expand...
offset core. Looks like a close race. That load is definitely on my list. Airfest is gonna be EXPENSIVE!
 
Jeroen_at_CTI said:
These motors are in stock in our magazine and can be ordered by our dealers as soon as they have been announced by CAR/MC2.

Jeroen.
Click to expand...

Thank you Jeroen for that beautiful "N" motor...:eek:

mannyskid said:
16803-N1560:

Jim Jarvis, paging Jim Jarvis. FourCarbYen's new sustainer motor is on the line for you. :cool:

Manny
Click to expand...

*No disrespect to Mr. Jarvis (who i've always wanted too meet.)*

"Handy Manny" forgets older Jedi Master now has those CNC'd fin jigs in his hands and, the last custom fins he needs to lay the keel on his carbon fluber two stager...
"Handy Manny" is not the only one... rubbing himself all over thinking what this new "N" motor can do for him...
"Handy Manny" forgets i also want to go out to the desert...someday and, possibly be honored or humbled...

Someone please tell "Handy Manny" before the first week in December of this year what days BALLS 2015 will be and, maybe older Jedi (who is tired of having him yapping around his ears about BALLS...) may be able too "BID" his time off for said event.

But, until then "Handy Manny" will just have too wait until Thunderstruck next year too see *Ralston & Purina* test on its planned N10k too N10k launch...Kind of hard too find a field around here with a wah-v-aire over 16k...

There's one down the street though.:dark:

Evil....pure $#@%'n evil...
 
JohnCoker said:
These motors have been entered into ThrustCurve.org, so who'll be the first to upload sim files for them?
F70
F51
F32
F31
G33
H42
H53
I55
J94
J150
L265
K520
K600
K711
J145
M1101
L395
N1560

And André, I want to say special thank you for publishing the certification documents in a complete and consistent form and in a timely manner.
Click to expand...

Holy Guacamole !

Will have to get MELLOW here in CA ... that J150 is dying to be put into Min Diameter bird . Jeroen..instead of SPO tapered nozzle/closure on this motor would do the exact opposite, send it tapered and SPO the traditional !

Kenny
 
JohnCoker said:
These motors have been entered into ThrustCurve.org, so who'll be the first to upload sim files for them?
F70
F51
F32
F31
G33
H42
H53
I55
J94
J150
L265
K520
K600
K711
J145
M1101
L395
N1560

And André, I want to say special thank you for publishing the certification documents in a complete and consistent form and in a timely manner.
Click to expand...

Here is a I55 I put together last night. It is not perfect so I did not want to upload it to the website directly.

This can be used for anyone that wants to get a general idea of how the motor performs.

View attachment CTI_I55.eng
 
BLKKROW said:
Here is a I55 I put together last night. It is not perfect so I did not want to upload it to the website directly.

This can be used for anyone that wants to get a general idea of how the motor performs.
Click to expand...

This motor will be perfect for my blackhawk 38, very slow launch, barely fast enough off the rail with 5 G's of acceleration but will still hit over 4,400'. The I55 sustains an even ~65N thrust for a full 5.5 seconds, and then ~2 seconds of tail off. WOW!
 
Jeroen_at_CTI said:
Threaded. But the L265 uses the regular phenolic liner, whereas the K300 uses a thicker phenolic liner. Closures can not be exchanged between these motors.

Jeroen
Click to expand...

Thanks. Reason I ask is that the Aeropack forward retainers and Aerotech's threaded forward closures use 5/16" thread, which means swapping out the forward retaining stud when switching between a regular CTI forward closure and one that has the 1/4" threads already installed.
 
Awesome, thank you!

ECayemberg said:
It's a moonburner; photo of the grain in the lower center of the photo.

Here's a few shots from the Thunderstruck5 drag race with the motor in question. Very nice motor; I enjoyed it immensely!
Click to expand...
 
Ok,

video now, I just process 4 of them for now... kind of late here...

Thanks to my friend Mario, who took care of my camera.

Enjoy!

André



[video=youtube_share;Bx06Omf7_VQ]https://youtu.be/Bx06Omf7_VQ[/video]
[video=youtube_share;Chg9sKILRnA]https://youtu.be/Chg9sKILRnA[/video]
[video=youtube_share;iof8ZQedKoc]https://youtu.be/iof8ZQedKoc[/video]
[video=youtube_share;5cB4Y9mzYMU]https://youtu.be/5cB4Y9mzYMU[/video]
 
I am impressed. Mellow is most definitely high on my radar if I feel the need for a new set of casings. Hmmm, L1 cert special?
 
Wayco said:
The Pro98 6GXL is a serious long burn, but it looks like the thrust vectored at the end.
Click to expand...

This is when the nozzle un-chockes. All motors do that, but most have a much sharper tail-off and it is not noticeable. When the grain is almost burned out, there is a wide open core.

Jeroen
 
Menkar said:
Ok,

video now, I just process 4 of them for now... kind of late here...

Thanks to my friend Mario, who took care of my camera.

Enjoy!

André

[video=youtube_share;Bx06Omf7_VQ]https://youtu.be/Bx06Omf7_VQ[/video]
Click to expand...

I just wet myself...:rolleyes:
 
The new Skidmark longburn... was a little bit far but still nice motor.

[video=youtube_share;Qi8nO8vvoLQ]https://youtu.be/Qi8nO8vvoLQ[/video]
 

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