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Old 08-11-2019, 02:23 AM
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blackshire blackshire is offline
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Default Jetex kits (maybe B/G convertible)

Hello All,

The Vintage Model Company (see: www.vintagemodelcompany.com ) offers replicas of classic F/F (including Jetex) model airplane kits. The Jetex series (see: http://www.vintagemodelcompany.com/...red-models.html ) can also use the Czech-made, single-use, Rapier model jet motors (see: http://www.google.com/search?source...HYCdDL4Q4dUDCAs ) instead of the reloadable Jetex/Jet-X motors, and:

The Rapier motors are (were?) paper-cased, clay nozzle-equipped, zinc-sulfur rocket motors whose propellant grains are so formulated that they burn slowly, producing low thrust for longer periods of time than do most model rocket motors. Like model rocket motors, the Rapier motors are (were?) made in various thrust-time combinations. (Perhaps a slow-burning black powder formulation might also provide Rapier-type performance [hint, hint, Estes and Quest... :-) ].) At least some of the above-linked Jetex kits might also--perhaps if equipped with a long, stable booster--be able to be flown as vertical takeoff model rocket boost-gliders (or maybe even as rocket gliders, in a few cases). Their replica of the Skyleada Vulcan (a scale model of the prototype, pure-delta-winged Avro Vulcan jet bomber) should glide very well.

I hope this information will be useful.
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Old 08-11-2019, 08:08 PM
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The V1 looks interesting. Prices are in euros?
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Old 08-12-2019, 09:55 AM
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Old 08-16-2019, 04:11 AM
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Quote:
Originally Posted by Ez2cDave
Thank you--I *thought* I had read that about the Rapier motors some years ago, but I wasn't positive. I have a shrink-wrapped (like some sausages) pack of green Rapier motors, which are a bit narrower and longer than Estes 13 mm mini motors. If one of the model rocket manufacturers would produce similar model jet motors, there is a market for them (some people make their own model jet motors, using--in some cases--"watered-down" sugar rocket propellant formulations [the "Incredible Five Cent Sugar Rockets" are even physically very similar to the Rapier motors, having rolled gummed-paper cases and simple modelers' clay nozzles]), and:

There are, surprisingly, still Jetex/Jet-X fuel pellets (jealously hoarded and sparingly used by F/F jet modelers, including at jet model meets). Also, the classic Jetex plane kits are still made by multiple companies (they offer "Retro-Repro" duplicates of the Keil-Kraft, FROG, and other Jetex kits), so if Estes, Quest, Klima, or another model rocket maker offered Rapier-type jet motors, there are plenty of kits that could use them.
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http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
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Old 08-22-2019, 01:35 AM
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Quote:
Originally Posted by Brent
The V1 looks interesting. Prices are in euros?
On my screen, the website https://www.vintagemodelcompany.com...e/1/?scroll=500 gives the prices in pounds sterling (), which is no problem with PayPal, which they do accept (see: https://www.vintagemodelcompany.com/ordering.html ). I suppose it's possible that my connection just "defaults to pounds sterling" and also can be displayed in euros, but if so, PayPal also supports transactions in euros.
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Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
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Old 08-22-2019, 07:19 AM
astronwolf astronwolf is offline
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Quote:
Originally Posted by blackshire
If one of the model rocket manufacturers would produce similar model jet motors, there is a market for them ....

If Jetex-type products had any market viability, you'd think that during the 60+ year span of model rocketry that this would have been tried and maybe caught on. But that didn't happen.
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Old 08-22-2019, 08:14 AM
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Quote:
Originally Posted by astronwolf
If Jetex-type products had any market viability, you'd think that during the 60+ year span of model rocketry that this would have been tried and maybe caught on. But that didn't happen.
Guess what? (I'm not being sarcastic, as I just came across the following this morning.) A new Jet-X product line--including kits and motors--*is* being developed (see: https://jetxus.wordpress.com/ ). Their paper-cased, single-use J-1 motor is 1/2" in diameter and 2-1/2" long. Videos on the above-linked Jet-X website show the motors and models in action, and there are also photographs, as well as descriptive text.
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Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
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Old 08-22-2019, 08:31 AM
astronwolf astronwolf is offline
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Quote:
Originally Posted by blackshire
A new Jet-X product line--including kits and motors--*is* being developed...

That's nice, but it kind of side-steps my point. You suggested "one of the model rocket manufacturers" take up the torch for Jetex.
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  #9  
Old 08-22-2019, 08:49 AM
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Maybe someone can develop a really tiny and lightweight thrust-vector control system for those motors. :-)
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Old 08-22-2019, 09:10 AM
stefanj stefanj is offline
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The Jetex revival page that Blackshire points to mentions a crowdfunding effort.

Who would be onboard? I'm wavering.
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