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Author Topic: Jetex Rocket Motors  (Read 5141 times)

aeronut

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Re: Jetex Rocket Motors
« Reply #25 on: January 23, 2017, 12:32:55 pm »

There's lots of info here
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Gordon

Jerry C

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Re: Jetex Rocket Motors
« Reply #26 on: January 23, 2017, 01:14:10 pm »

Couldn't have put it better myself Jim. Glee to a tee. Just looked at those films on YouTube and I'm grinning from ear to ear. Air Traffic Control totally absent to this day. Suspect a lot are using modern rocket motors and not jetex as such. I'm surprised though that the pellets still burn well after so many years in storage.  Oh happy days.
Jerry.

tobyker

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Re: Jetex Rocket Motors
« Reply #27 on: February 20, 2017, 09:59:28 pm »


ICI factory "somewhere in Scotland" was probably Ardeer on the SW coast.
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Umi_Ryuzuki

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Re: Jetex Rocket Motors
« Reply #28 on: February 20, 2017, 11:26:14 pm »

I think you would need to design a drag skeg to keep it on the water.
Even then, there would still be a great possibility that the model will catch air.
The few "cold power" rocket experiments we did were often scuttled by the high viscosity of water.

I did run a car for four years. Estes D engines...
There was actually a pretty heavy weight on the front wheel and suspension to
keep the nose down on the pavement. The ejection charge was channeled up and
over the engine to pop a drag chute back behind the vehicle after the run.

https://www.youtube.com/watch?v=00RwloRsIo4

roycv

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Re: Jetex Rocket Motors
« Reply #29 on: February 21, 2017, 10:13:35 am »

Hi I used to have a Jetex 50B and this was in a kit built all balsa boat about 6 inches loa.  It went very well and stayed in the water without problem.  I do not remember whose kit it was, (I did not like the bright yellow plastic boats) does anyone else remember it or know of it?  I think it must have been in the early 50's.
regards Roy
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John W E

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Re: Jetex Rocket Motors
« Reply #30 on: February 21, 2017, 10:22:25 am »

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roycv

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Re: Jetex Rocket Motors
« Reply #31 on: February 21, 2017, 03:24:42 pm »

Hi Bluebird, well that was the one I was not so keen on!  I made up a balsa kit which I had forgotten about until this thread, but I also used to make the flying scale models from Skyleada and Keil Kraft and used the jetex in them as well.
Happy days!
regards Roy
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Stavros

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Re: Jetex Rocket Motors
« Reply #32 on: February 21, 2017, 03:50:13 pm »

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Umi_Ryuzuki

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Re: Jetex Rocket Motors
« Reply #33 on: February 21, 2017, 06:05:56 pm »

https://www.youtube.com/watch?v=BJHeh-niA5E


Dave

Those have a very 'mild' burn compared to any of the Estes model rocket engines.

Geoff

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Re: Jetex Rocket Motors
« Reply #34 on: February 23, 2017, 02:01:49 pm »

I used to have the usual small jetex motors and one large one which was about 3" long. I strapped it to the back of a mechano car and it would shoot down the side road like a rocket!


I seem to remember they were always difficult to light and invariably wouldn't when there was a crowd of people watching!


Great fun though!


Cheers


Geoff
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Grumpy Dave

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Re: Jetex Rocket Motors
« Reply #35 on: February 23, 2017, 10:38:51 pm »

We used to tie a brick to a tin can , light the pellet slam the lid on and chuck it in the pond. Brilliant depth charge!
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Tombsy

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Re: Jetex Rocket Motors
« Reply #36 on: February 23, 2017, 11:53:28 pm »

Best fun I had as a kid, strapped a Jetex to a hot wheels car and had track stretched out down the sidewalk. I managed to cram an extra half a pellet in and lit it. The car took off up in the air and exploded, ripping out the side of the motor can. As a 12 year old it was spectacular.
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Brian
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