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Rapier motors (Read 353 times)
Reply #22 - Aug 7th, 2018 at 8:06pm

Sky9pilot   Online
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I love that airplane!!! I plan on doing one myself...a bit smaller though.  33mm EDF
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 #21 - Aug 7th, 2018 at 5:45pm

Ray_K   Offline
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8-7-2018

Hi Tom, yea the Ohka was not a good choice for this fan, when time permits I will go with the Douglas Skystreak instead, easier to do for my first time jet project.

Cheers, Ray K.
 

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Reply #20 - Aug 6th, 2018 at 6:09pm

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That explains the large battery!!!  This would make a pretty large airplane to enclose this EDF inside a fuselage 3.5-4" to encapsulate it.  I look forward to this coming together.  This will make a pretty large Ohka model for sure.  You know the Ohka didn't have intakes so are your thinking an opening on the bottom of the fuselage in front of the EDF?  On second thought I believe there was a variant that did use a type of jet engine.  I'll have to do some research...

Edit;  It was the Ohka Yokosuka MXY7 model 22 that had the jet? engine...The Ohka Model 22 was a weapon built of desperation. Never reaching combat, it was designed to address some of the Model 11's shortcomings. It featured a unique Campini-type "jet" engine arrangement meant to extend the range to a safe distance. This consisted of a 100-HP Hatzukaze piston engine driving a compressor into which fuel was injected and ignited. It was meant to be carried aloft under a Yokosuka P1Y3 Model 33 Ginga "Frances", and was given a 33% smaller wing and half the warhead of the Model 11. At only 276mph airspeed and with undoubtedly monstrous handling (on the first test flight, it killed the chief Ohka test pilot when it plummeted out of control immediately upon being dropped), it is difficult to see how it would have been an effective weapon. Other planned models were to be powered by the new Ne-20 turbojet and launched in a variety of ways: Nakajima G8N2 Renzan "Rita" bomber drop, own takeoff, catapult-launch from land or submarine, or towed behind an aircraft.
Tom
 

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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 #19 - Aug 6th, 2018 at 5:02pm

Ray_K   Offline
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8-6-2018

Tom the fan is 3 inches DIA.

Cheers, Ray K.
 
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Reply #18 - Aug 2nd, 2018 at 7:07pm

Ray_K   Offline
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8-2-2018

Tom, of course, when I get home tonight I measure everything up, I think the power source is 3X50 MHA cells, I will double check that, the charger has 6 D-cell batteries in it. The Sonic blast flew for a country mile on this thing, that's for sure.

Cheers, Ray K.
 
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Reply #17 - Aug 1st, 2018 at 9:55pm

Sky9pilot   Online
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Can you give some more details about the EDF.  Dimensions of the fan unit.  Size of the battery etc.
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 #16 - Aug 1st, 2018 at 4:25pm

Ray_K   Offline
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8-1-2018

Here is that fan unit I was talking about, it came from a sonic blast, a foam FF jet that I think estes had put out years ago.

Cheers, Ray K.
 

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Reply #15 - Aug 1st, 2018 at 11:56am

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Ray,
Can't wait to see this new rapier project.  This looks like a really neat project!  Thanks for sharing the article and plan!
 

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 #14 - Aug 1st, 2018 at 12:04am

pb_guy   Offline
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Interesting what he says about a prop being helpful for countering torque and having to compensate when using a linear thrust motor. Look forward to seeing an autogyro when you get around to it.
ian
 
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Reply #13 - Jul 31st, 2018 at 9:43pm

Ray_K   Offline
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7-31-2018

Here is what I am going to do with my Rapier motors, it is called the gyro jet.

Cheers, Ray K.
 

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Reply #12 - Jul 31st, 2018 at 9:41pm

Ray_K   Offline
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7-31-2018

Found a cool model that would make a great EDF free flight model, it is called the Ohka, originally for Rapier power.  I have a fan unit that I ripped out of a foam free flight jet ages ago and just found it, it still works great, this is the model I am thinking of putting it in, never built a jet before, I will have to do this during the winter months, I will post pics of fan unit and charger.

Cheers, Ray K.
 
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Reply #11 - Jul 24th, 2018 at 5:13pm

Ray_K   Offline
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7-23-2018

I think I will use up what rapier motors I have, and then go with mini EDF and rubber for jets.  Smiley

Cheers, Ray K.
 
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Reply #10 - Jul 24th, 2018 at 11:19am

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Apparently Dr. Z is still making them and travels to the UK with them for the meets and makes them available to those interested.  I don't know their cost or anything of this nature.  I don't think they can be shipped or mailed.  Click Here for info on Rapier Motors
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 #9 - Jul 24th, 2018 at 11:13am

Sky9pilot   Online
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Think I'll stick to rubber powered or EDF jets!!!
Tom Roll Eyes Shocked Wink
 

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 #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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