Lady Anne variation.

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crazycorkey
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Re: Lady Anne variation.

Post by crazycorkey » Sat Feb 20, 2010 5:11 am

Have the dimensions for the latest revision been posted?

I think I would like to build this one.

Kool
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Re: Lady Anne variation.

Post by Kool » Sat Feb 20, 2010 7:00 pm

ha, by accident I've read yesterday(maybe for the third time, I find it an fascinating design) this topic (and al the related topic like Jane grey,the BIG lady etc), and I also couldn't find the revised dimensions. It seemt to me that te conus from the sparkplug to the combustionchamber is elongated.

Are the inner dimensions of the inlets still 20.5mm?

I just last night calculated about 4 hours to a 20% scaling up of the Lady Jane Gray. :wink:
Because the topic was so old, I was planning to contact James or Graham by PM, but because you already did it here, I do it also in this topic :mrgreen: u
...It's better to generate heat efficiently, than recover it efficiently...

Graham C. Williams
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Re: Lady Anne variation.

Post by Graham C. Williams » Sun Feb 21, 2010 12:58 pm

Hi. Yes Send me a PM and I'll send you a late drawing.

Graham.
Dark days nurture new
light. Productions begin.
Now open your eyes.

akhil
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buy a pulsejet

Post by akhil » Sun Feb 28, 2010 6:23 pm

I have a jet plan
so i want to buy a pulsejet for this
help pleas!

crazycorkey
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Re: Lady Anne variation.

Post by crazycorkey » Thu Mar 04, 2010 7:05 am

For the Snake fuel injector, how thin is the copper pipe? It seems like it would be difficult to get it to ball up on the end to drill the 4 holes.

Have these runs been on gaseous propane?

I read Graham used 1mm stainless and in the beginning James used 0.7 mm.
My local shop has some smaller stock of 314 stainless 0.7mm.
Would you guys recommend something(alloy/thickness) else?

Best Regards,
Cory

(P.S. Graham I tried your email but it bounced back)

Kool
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Re: Lady Anne variation.

Post by Kool » Thu Mar 04, 2010 1:33 pm

This has Graham mailed to me (I prefer with very old topics to contact the author/builder by pm :wink: )
Ensure you have no restrictions between the Propane tank and the injectors.
The fuel pipes are 4mm O.D. thin wall copper made-up as shown in the photographs.
I'm also planning to build such an engine, and I think when you're really interested, Graham will send the latest drawings to you.

Good luck
...It's better to generate heat efficiently, than recover it efficiently...

PyroJoe
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Re: Lady Anne variation.

Post by PyroJoe » Wed Mar 30, 2011 1:42 pm

After reading this thread several times over the years, a question surfaces:

James D, what inspired you to add a second intake? :D

jannypan
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Re: Lady Anne variation.

Post by jannypan » Thu Mar 31, 2011 7:50 am

If the centre of combustion had moved 'south' towards the tailpipe would that give an increase in frequency or is it just likely to be running hotter?

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