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Rapier motors (Read 544 times)
Reply #8 - Jul 23rd, 2018 at 11:34pm

pb_guy   Offline
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So I'm just a kid at heart.
Youbou, BC, Vancouver Island

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You don't have to be a chemist yourself. Lots of info on 'sugar rockets' like this one: https://www.wikihow.com/Make-Sugar-Rockets
ian
 
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Reply #7 - Jul 23rd, 2018 at 8:40pm

Ray_K   Offline
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to create that which never
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7-23-2018

Thanks Tom, my chemistry knowledge is not bad but on that token I know I would most likely blow myself up or burn the house down trying to make rocket motors, I know it is how you handle the chemicals that could make or break you. I was curious if anyone has actually tried this and if they were successful.

Cheers, Ray K.
 
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Reply #6 - Jul 23rd, 2018 at 8:29pm

Sky9pilot   Offline
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Chemistry wasn't my forte at school...I'm not the one you want mixing rocket fuel. Cheesy Shocked Wink

I understand the real trick is the nozzel.  Mike Stuart's site has rapier powered models and he discusses this at some length.  HPA has had several discussions on rapier power that you might want to check out as well. 

From what I've read, the trick is not the rocket burst like the Estes Rockets but the formulation of long slow constant burn power.  That's my limit of knowledge on this subject.  Any of you modelers out there with more insight and info.
Tom
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #5 - Jul 23rd, 2018 at 8:00pm

Ray_K   Offline
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to create that which never
exsisted before.

Posts: 423
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7-23-2018

Has anyone tried to make their own rocket motors for free flight? I have done some research on this subject and find that there is 5 basic components needed.
1. PVC tube or pipe, for our needs 1/2 inch internal DIA.
2. Rammed clay, end cap.
3. propellant.
4. Drilled hollow core.
5. Rammed clay, nozzle.

The rammed clay is Kitty litter, ( Tidy cat ) I am not kidding.

The propellant is Sucrose, ( powdered sugar )
Potassium Nitrate, ( found in stump remover, 99% pure. )
Black powder, ( used to prime the core, core burner.

From what I understand this will produce an A7 engine.

Any thoughts on this?

Cheers, Ray K.
 
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Reply #4 - Jun 28th, 2018 at 11:54pm

Sky9pilot   Offline
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Kelso, WA 98626 USA

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Outstanding Ray...maybe build another Bell X-1 or upgrade to the Bell X-2
Tom
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #3 - Jun 28th, 2018 at 9:34pm

Ray_K   Offline
Senior Member
to create that which never
exsisted before.

Posts: 423
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6-28-2018

I still have 6 boxes of L-2 Rapier motors, not sure what I am going to do with them. Maybe make another rocket plane. Last time I used them was in a Bell X-1 many years ago, that plane was stolen when my back was turned.

Cheers, Ray K.
 
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Reply #2 - Jun 26th, 2018 at 8:00pm

shipwreck   Offline
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Medina Ohio

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Thanks Tom will do.
Paul
 
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Reply #1 - Jun 26th, 2018 at 7:43pm

Sky9pilot   Offline
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Kelso, WA 98626 USA

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Are you asking about Rapier motors?  If so I believe they are being made in Czechoslovakia still, but due to the change in shipping laws cannot be shipped outside of the country.  I believe some of the fellas in the UK do travel there and bring some back to the UK for their models, but I'm not sure about that lately.  Since 9-11 lots of things have changed.

Most of the modelers in the U.S. are moving to micro/mini EDF (Electric Ducted Fan) models, check out HPA's thread on EDF's like Tom Arnold's F-86K: Click Here
Tom
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Jun 26th, 2018 at 4:53pm

shipwreck   Offline
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Navy Vet
Medina Ohio

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Do they make or sell Raptor motors for Jetex models any more?
« Last Edit: Jul 24th, 2018 at 11:17am by Sky9pilot »  
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