J145 long skid

Anyone like the J145 long burn skidmark? It seems like an odd combination to me, wasting that thrust on a long burn and possibly taking the effects out of visual range, but it could be neat.

Someone flew one at Aeronaut. I thought it was a great flight.

i saw someone (Russ?) fly it at Bong a month ago. Was a pretty awesome flight- i can't wait to fly one myself.

It's a very cool motor to watch. It is flown for visual and audible effect - low, slow, loud, and sparky. It is not a performance motor, so it is only wasted thrust in the sense that all hobby motors are wasted thrust...

Who makes it?

CTI - 2 grain 54mm motor

I've seen it.... it's 7 seconds of pure awesome.

I have flown it. I love it. Don't waste it in a light rocket. Skids need something to push against, that's State law. I have 3 in my box. I can't wait for its big brother, a 4grain long burn K Skid! I got the word directly from Dr. J that it's coming!

oooooo thanks! I saw a couple of these at LDRS and have been meaning to look up who makes them. looks like the perfect motor for my dual deploy Lil Rascal!

This would make a awesome motor for a night launch rocket.

I flew one in a Jimbo Jart. 4in diameter.....8.5 lbs loaded on pad. That's the max I would use it in.

Sparks and noise everywhere for 7 seconds, went 2680 ft.

Then we drag raced 4 of them.......pure awesome-sauce.

Wow, popular motor! I am feeling a little sad about leaving it out of my last shipment, though heaven knows I spent enough without it.

Put one in my stealth - perfect for keeping everything close and visible.....

jimzcatz said:

I have flown it. I love it. Don't waste it in a light rocket. Skids need something to push against, that's State law. I have 3 in my box. I can't wait for its big brother, a 4grain long burn K Skid! I got the word directly from Dr. J that it's coming!

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Prays for a 6G(xl) L version.

Probably my favorite CTI Skid yet! I haven't flown my last one yet, that's for sure!

-Eric-

I saw one fly in a saucer once. Truly the best way to fly it IMHO.

T34zac said:

I saw one fly in a saucer once. Truly the best way to fly it IMHO.

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Scratch built?? The Wocket is too heavy for this.

jimzcatz said:

Scratch built?? The Wocket is too heavy for this.

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Not sure. Talk to Delta22 here on the forum. It belongs to him.

I've flown it in my Frenzy, almost 9lbs on the pad with it, I know, do the math and it doesn't come close to 5:1 but never had a problem, of course the Frenzy is 2-3cal stable, and I always use at least the 8ft rail. Here's a video of the first time I launched it on the J145: [video=youtube_share;5tZgQPanM58]https://youtu.be/5tZgQPanM58[/video]
You can hear it sputtering and crackling all the way up, hit 2700ft

Great video! Thanks for posting it.

dgreger said:

I've flown it in my Frenzy, almost 9lbs on the pad with it, I know, do the math and it doesn't come close to 5:1

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The J145 motor has about 55 pounds of thrust off the pad, so about 6:1 in your configuration. The motor is very regressive; the average thrust is only 33 lbs.

Thrust curve and data can be found here: https://pro38.com/products/pro54/motor/MotorData.php?prodid=699J145-19A

Jeroen

Well I know the next J ill be flying!

Jeroen_at_CTI said:

Great video! Thanks for posting it.



The J145 motor has about 55 pounds of thrust off the pad, so about 6:1 in your configuration. The motor is very regressive; the average thrust is only 33 lbs.

Thrust curve and data can be found here: https://pro38.com/products/pro54/motor/MotorData.php?prodid=699J145-19A

Jeroen

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Thanks Jeroen, there have been some who said the spike on the thrust curve is just the igniter pellet giving a false thrust spike, but seeing my rocket leave the pad its evident there's more to it!