Found! Obi-Wan Kenobi ANH Lightsaber Emitter

Check out the nozzle-thingy on the bottom right of the cutaway Derwent engine, just below IG-88Â’s head. Possibly an Obi ANH emitter?



ItÂ’s here on these pages:

http://www.gasturbineowners.com/derwent.htm

http://www.gasturbineowners.com/images/a23.jpg

http://www.gasturbine.pwp.blueyonder.co.uk/derwent.htm

http://www.gasturbineowners.com/raf_...p4038b_vol.htm

http://www.gasturbineowners.com/raf_...4038b_vol1.htm

From some of the diagrams, I think it is the torch igniter. Got to be worth checking out! WhoÂ’s got access to one of these in an aircraft museum in England?

I wouldnÂ’t be surprised if we spot some of IG-88Â’s torso and limbs there as well. Maybe, just maybe, even the Obi gear as well. Yours oh so optimistically, Phil

Now that looks very interesting!

Howard.

Awesome possibility.

Is this the Derwent 8 or 9 engine. I am trying to dig up some good images.

Well considering that it looks like the ANH Flash hider may have came from an aircraft, they may have taken more parts from planes for other props.

Absolutely brilliant find........I"ve looked at that silly diagram over and over and it was right in front of us all along............Here's to hoping its what we hope it is!!!!

Dave

I agree that looks promising, the torch relationship sounds good, and the proportions look right.

WhatÂ’s the scale on this?

looks like it from this POV, but geezus, how much would it cost to get your hands on one???

I got this from Google.

http://www.aardvark.co.nz/pjet/starting.shtml

Scroll down a little and you'll see what I mean.

I typed in 'torch igniter' and this was the first hit.

Howard.

Found this site that may be of interest.
Rolls Royce homepage.

According to the above press release, they have all the derwent engine drawings in an archive at the Hucknall branch as well as some engines. Maybe if someone were to politely write a currator there, a few of the more important drawings to us could be copied and sent. Or perhaps even a member who lives near Notts, England could arrange a tour and posibly get some info that way. Either way, I think as a group, only one or possibly two people at the most should attempt to contact RR. The more people who bother them, the less likely we are to get any information.

Also, since the engine was used on the Meteor. Perhaps a visit to the local air museum and a talk with the restoration staff might yield some pics or info. If I remember, the Planes of Fame Museum in Chino, CA (near me) has a meteor on display.

Howard, I don't think I see what you mean, Help!!
Scott

I did a quick check of patents. If you look at how one of these is supposed to work, it looks close in design:

http://patimg2.uspto.gov/.piw?Docid=069128...ey=2F5083954933

Acerocket I agree entirely, researching this should be handled with great delicacy to ensure we get the best information possible.

Originally posted by acerocket@Sep 26 2005, 10:14 AM
Found this site that may be of interest.
Rolls Royce homepage.

According to the above press release, they have all the derwent engine drawings in an archive at the Hucknall branch as well as some engines.Â* Maybe if someone were to politely write a currator there, a few of the more important drawings to us could be copied and sent.Â* Or perhaps even a member who lives near Notts, England could arrange a tour and posibly get some info that way.Â* Either way, I think as a group, only one or possibly two people at the most should attempt to contact RR.Â* The more people who bother them, the less likely we are to get any information.Â*

Also, since the engine was used on the Meteor.Â* Perhaps a visit to the local air museum and a talk with the restoration staff might yield some pics or info.Â* If I remember, the Planes of Fame Museum in Chino, CA (near me) has a meteor on display.

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Originally posted by starwrslover@Sep 26 2005, 10:39 AM
Howard, I don't think I see what you mean, Help!!
Scott

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I think he's talking about the functionality of the piece, read some text at that site and you'll get an idea.

Check page 3 of this patent:

http://patimg2.uspto.gov/.piw?Docid=033611...ey=4B06ECCCA414

Very close!

Anyone live near Coventry?

http://www.enginehistory.org/coventry.htm

KD

Those patent links arent working for me.
They just say the search timed out.

This one will be a tough search, but hopefully a fruitful one.
I want an IG-88 head!

Aaahhh, got cha!

Originally posted by Serafino+Sep 26 2005, 07:07 PM--><div class='quotetop'>QUOTE(Serafino &#064; Sep 26 2005, 07:07 PM)</div>

Acerocket I agree entirely, researching this should be handled with great delicacy to ensure we get the best information possible.

<!--QuoteBegin-acerocket

@Sep 26 2005, 10:14 AM
Found this site that may be of interest.
Rolls Royce homepage.

According to the above press release, they have all the derwent engine drawings in an archive at the Hucknall branch as well as some engines.Â* Maybe if someone were to politely write a currator there, a few of the more important drawings to us could be copied and sent.Â* Or perhaps even a member who lives near Notts, England could arrange a tour and posibly get some info that way.Â* Either way, I think as a group, only one or possibly two people at the most should attempt to contact RR.Â* The more people who bother them, the less likely we are to get any information.Â*

Also, since the engine was used on the Meteor.Â* Perhaps a visit to the local air museum and a talk with the restoration staff might yield some pics or info.Â* If I remember, the Planes of Fame Museum in Chino, CA (near me) has a meteor on display.

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The RR museum is at Hucknall ? Never knew that and I do my shopping there every 2 weeks. I only live about 20 minutes away but I dont think its open to casual visitors. I think you have t be a member of the trust.

If I can help though just lmk.

Originally posted by lonepigeon@Sep 26 2005, 04:17 PM
Those patent links arent working for me.
They just say the search timed out.

This one will be a tough search, but hopefully a fruitful one.
I want an IG-88 head&#33;

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The site was very slow, timed out on me several times or I might have found something closer. Also, I believe those are all to recent for the actual item. It is hard to search for older items unless you know the patent numer. So, find newer items and click the links to the patents they reference in their making.

Woohooo&#33; I&#39;m stoked to see it&#39;s going well so far&#33;

Just as an aside - did anyone check out the pictures in the manuals on the last two links? There&#39;s heaps of cutaways there, plus some have gears that look to have about the same number of teeth as the Obi gear, except they appear to be shorter in the length. Plus I can&#39;t figure out how they compare diameter-wise. But it got me thinking, what if the Obi gear is an oil-flinger gear from a scavenger-type pump - might explain the shape of the teeth? FWIW, Phil

HereÂ’s a close up of one of the pics with gears in. Seems to be roughly the same shape and number of teeth, just not sure of the overall diameter and length. But maybe there are more, longer gears in other pars.


Here’s another picture in the manuals. Interesting point to me is the bit about the “mounting for the burner flange, which is secured to the facing by set-screws. The burner is described fully in Chapter 2 of this Section.” I haven’t got to / found Chapter 2 yet, but I was wondering if the ring of holes might in fact be for a ring of set screws to hold this to the casing, instead of being to admit jets of air or fuel. This might explain why someone was able to see daylight through them in one of the posts I read recently?



Just speculating here. What do you think? Phil

OK guys,
I have a thought here. After looking at hundreds of diagrams, cutaways and what not, I think that while the diagram shows a promising part, we&#39;re looking for the wrong thing. An igniter torch is nothing more than a british spark plug, which would have an electrical connection (like the assembly at the top of the diagram in the first post).

I&#39;m thinking what we may be looking for is the coupler joint that connects the combustion assemblies to each other. The part we&#39;re looking for appears to be between chambers, not visible from the outside like the igniter ports would be. They&#39;d have to be accessible for service reasons. Our part may never need service and can be buried between chambers.

Here is the piece we&#39;re looking for (unexploded view). Only problem is, I don&#39;t know what it&#39;s called:




If someone can find a derwent expert and ask them what it is, I think we&#39;ll have found our part.

I hope this helps and leads somewhere.

Thanks to WC for hosting

-Fred

Maybe this pic will be of some value, it was posted in another thread trying to identify the emitter as an escutcheon. The topmost part of the object seems to be the emitter, if this is the case it is unlikely that the part you are looking at on the derwent is the correct emitter.

I don&#39;t recall the final outcome of the lead represented by that pic, but I do vaguely recall the chase fizzling out...

Id be happy to just get a nice cast of the head for an IG88