CTI Cesaroni Technology

gregm · Nov 2, 2012

[video=youtube_share;mu0hduEdOPs]https://youtu.be/mu0hduEdOPs[/video]

Aksrockets · Nov 2, 2012

Thanks, Charles and Greg!

That is one heck of a motor!

Alex

Cogino · Nov 2, 2012

Aksrockets said:
Charles,
Do you have a video? I have only seen a static test of one of these monsters.
How long would you guess that flame is?

Alex

Alex
It is in the Rockets Magazine video of the launch. You can see a brief look at it in their LDRS XXX preview at the 40 second point. It takes off like a minimum diameter not a 200 lb. rocket

And the flame was awesome. I guess it was probably 20 feet long

Charles

BEC · Nov 3, 2012

Cogino said:
This is a picture of my full scale WAC Corporal at LDRS XXX in Argonia flying the first O25000. What a motor!
View attachment 103169

Charles Ogino

https://www.carolinacompositerocketry.com

That's really interesting - a marvelous solid fuel full scale model with four times the thrust but 1/10 the total impulse of the liquid fuel rocket it is a model of.....no wonder it took off quickly.

From wikipedia:

WAC Corporal sustainer
Empty weight: 296.7 lb (134.6 kg)
Loaded weight: 690.7 lb (313.3 kg)
Thrust: 1,500 lbf (6,700 N)
Duration: 47 s
Impulse: 67,000 lbf·s (300,000 N·s)

GaryT · Nov 4, 2012

Grain Bonding:

Per CTI Pro98® Product Notes they recommend a foaming polyurethane glue such as Gorilla Polyurethane Glue or Elmer’s Glue-All Max. Thing is I've never been able to find the Elmer’s Glue-All Max till now, believe it or not I found it at Walmart. The web site says its 14.95 for a 4oz bottle, I paid 6.95?

I mention this cause I've read here that some (Myself included) had trouble with the Gorilla glue setting up too quick. From what I've heard the Elmer’s Glue-All Max gives you a longer working time.

In 2 weeks I'll be doing some grain bonding so I decided to give the Elmer’s Glue-Al Max a try, hopefully this time I won't break a bead of sweat in a panic.

View attachment 103416

atxcple · Nov 4, 2012

SUCCESS L3 I BE.

HERE IS FREEDOMS PRICE on a CTI PRO98 6 Grain N2501 white this motor rocks for the full 6 second burn

jus_rockets · Nov 4, 2012

atxcple said:
SUCCESS L3 I BE.

HERE IS FREEDOMS PRICE on a CTI PRO98 6 Grain N2501 white this motor rocks for the full 6 second burn

View attachment 103417 View attachment 103418

Wow I wish I could see one of those live.

Pantherjon · Nov 4, 2012

atxcple said:
SUCCESS L3 I BE.

HERE IS FREEDOMS PRICE on a CTI PRO98 6 Grain N2501 white this motor rocks for the full 6 second burn

Congrats!:clap:

That's doin it in style, an 'N' motor!Cool!:cool2:

What was your altitude out of curiosity?

atxcple · Nov 4, 2012

Arts malfunctioned no data recorded. Consensus is greater than 12k from those who saw the flight

GregGleason · Nov 5, 2012

atxcple said:
SUCCESS L3 I BE.

HERE IS FREEDOMS PRICE on a CTI PRO98 6 Grain N2501 white this motor rocks for the full 6 second burn

View attachment 103417 View attachment 103418

Woohoo!

Congrats Shane!

Was that AARG/Hutto?

Greg

atxcple · Nov 5, 2012

Yes it was

GregGleason said:
Woohoo!

Congrats Shane!

Was that AARG/Hutto?

Greg

bandman444 · Nov 5, 2012

K454Skid in my 7.5" Scratch built rocket Size Matters

CarVac · Nov 5, 2012

GaryT said:
Grain Bonding:

Per CTI Pro98® Product Notes they recommend a foaming polyurethane glue such as Gorilla Polyurethane Glue or Elmers Glue-All Max. Thing is I've never been able to find the Elmers Glue-All Max till now, believe it or not I found it at Walmart. The web site says its 14.95 for a 4oz bottle, I paid 6.95?

I mention this cause I've read here that some (Myself included) had trouble with the Gorilla glue setting up too quick. From what I've heard the Elmers Glue-All Max gives you a longer working time.

In 2 weeks I'll be doing some grain bonding so I decided to give the Elmers Glue-Al Max a try, hopefully this time I won't break a bead of sweat in a panic.

View attachment 103416

If you have helpers, it's not a problem. CCotner and I loaded our N5800 with help from a friend, and it took all of three minutes to insert the grains: one person hands the grains one at a time to the person who squirts a bead of glue around them, and the third person is there so that the grains can be forced in without the motor sliding away.

Also, bandman444: don't oversharpen your photos. The unsharp mask radius is small, which is good, but the amount is really high, which leads to unpleasant outlines on edges and grainy skies.

HOBOjr · Nov 11, 2012

Here is video from my successful Level 3 cert flight, M1675-Pink, Nov.3 @ Plaster Blaster 11.
Wish I had a lift-off picture as the color of that flame was awesome.

[video=youtube;qGDtLxtOEfs]https://www.youtube.com/watch?v=qGDtLxtOEfs&feature=youtube_gdata_player[/video]

Darrel Kelley

gdjsky01 · Nov 11, 2012

atxcple said:
SUCCESS L3 I BE.

HERE IS FREEDOMS PRICE on a CTI PRO98 6 Grain N2501 white this motor rocks for the full 6 second burn

Congrats sir!!! Level 3 you be!
:clap::clap::clap: :cheers:

Jeff

gdjsky01 · Nov 11, 2012

HOBOjr said:
Here is video from my successful Level 3 cert flight, M1675-Pink, Nov.3 @ Plaster Blaster 11.
Wish I had a lift-off picture as the color of that flame was awesome.

Darrel Kelley

Darrel a great flight!!! Congrats on the L3.
:clap::clap::clap::clap::clap:

Jeff

HOBOjr · Nov 12, 2012

Thanks Jeff

gdjsky01 said:
Darrel a great flight!!! Congrats on the L3.
:clap::clap::clap::clap::clap:

Jeff

Darrel Kelley

HOBOjr · Nov 12, 2012

I'm currently working on a 54mm min. dia. rocket to fly on the
CTI K300 / K260 reloads and can't seem to find info on the
thread size of the inserts in the forward closure. Can anyone
help me with this info ?

Thanks, Darrel Kelley

gregm · Nov 12, 2012

Do all the Pro54 forward closures have the insert or only the long burn loads??

Didn't even know the long burn had it.

Jeroen_at_CTI · Nov 12, 2012

HOBOjr said:
.. CTI K300 / K260 reloads ....thread size of the inserts in the forward closure.

1/4-20.

Jeroen.

HOBOjr · Nov 12, 2012

Jeroen_at_CTI said:
1/4-20.

Jeroen.

Thank you Jeroen, I had heard both 1/4-20 and 5/16-18. Hope to get this bird
launched in Jan.

Darrel Kelley

Yoehahn · Nov 12, 2012

My Rouse Tapped FWD Closure is 5/16-18 and I would assume thats what the CTI was since the Aeropack MD retainer comes with the 5/16-18 on it as well... I think the 38mm are 1/4-20 not the 54. But thats just my opinion, take it with a grain of salt.

The Rocket Kid · Nov 12, 2012

I was wondering is there any plan for spacers for the pro24 cases?
If not why?

GaryT · Nov 12, 2012

Yoehahn said:
My Rouse Tapped FWD Closure is 5/16-18 and I would assume thats what the CTI was since the AEropack comes with the 5/16-18 on it as well... I think the 38mm are 1/4-20 not the 54. But thats just my opinion, take it with a grain of salt.

Thats why I said 5/16-18 in my original post. But Jeroen says 1/4-20 so I guess thats what it is.

Jeroen_at_CTI · Nov 12, 2012

The Rocket Kid said:
I was wondering is there any plan for spacers for the pro24 cases?
If not why?

There are only 3 different Pro24 case sizes (no 2G, 4G, and 5G). Therefore spacers don't make a lot of sense. The cost of the casings would not be that much different from the cost of the spacers.

Jeroen

gizza2 · Nov 12, 2012

Excellent flight, Darrel, and congratulations again!

HOBOjr said:
Here is video from my successful Level 3 cert flight, M1675-Pink, Nov.3 @ Plaster Blaster 11.
Wish I had a lift-off picture as the color of that flame was awesome.

[video=youtube;qGDtLxtOEfs]https://www.youtube.com/watch?v=qGDtLxtOEfs&feature=youtube_gdata_player[/video]

Darrel Kelley

HOBOjr · Nov 12, 2012

gizza2 said:
Excellent flight, Darrel, and congratulations again!

Thanks Greg, you were a great mentor for this project!!

Darrel Kelley
TRA#7500 L3

Spooks · Nov 12, 2012

38mm H123 Skidmark

Video quality isn't the best on a cell phone, but I found my video camera for the next launch...HD too!!

That will be a 54mm J355 Redline!

[video=youtube;xVdHHbCvxfo]https://www.youtube.com/watch?v=xVdHHbCvxfo&feature=g-upl[/video]

troj · Nov 12, 2012

I didn't realize the forward closure of these motors had a threaded insert -- good to know! Makes it easy to spin in extra (backup!) retention on rockets that use 'em!

-Kevin

Pantherjon · Nov 13, 2012

troj said:
I didn't realize the forward closure of these motors had a threaded insert -- good to know! Makes it easy to spin in extra (backup!) retention on rockets that use 'em!

-Kevin

Especially if one were to forget to close a quick link...Hmmm, wonder who might have done something like that?:roll:

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