Found! Obi-Wan Kenobi ANH Lightsaber Emitter

[Prop Runner]

I agree. I'm afraid that that B&W photo is a wild goose chase and dead end. The more I look at it, the more it does resemble a bicycle or motorcycle wheel hub assembly.

Good luck with the RR engineer.

I await with baited breath...

- Gabe

 

[Killdozer]

Originally posted by Serafino@Sep 30 2005, 12:55 AM
"... two per combustion chamber with different flange diameters each. The picture you have looks like the left hand side as you look at the balance pipe."

So keep that in mind as you search. 

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Maybe that's why my render from the drawing looks wonky...


[attachmentid=4882]

KD

 

[gavidoc]

Originally posted by TK171+Sep 29 2005, 01:21 PM--><div class='quotetop'>QUOTE(TK171 @ Sep 29 2005, 01:21 PM)</div>

<!--QuoteBegin-Miniaturizer Ray

@Sep 29 2005, 02:17 AM
Those look like an artist's interpretation of involute gears, to me.  As I said above, I think that we're looking for a spline.

Look at this: Maybe the spline circled in blue is our boy, or maybe the spline that fits into the shaft circled in red could be. I expect there are other candidates, too.[/b]

Keep in mind that there is a shoulder that goes into the sink knob portion of the sabre. If you look closely at the metting point between the pommel and the gear, you can see glue. MR made their gear to have a flare on it instead of the glue.

There is nothing under the clamp. The upper portion (grenade and up) of the sabre is not perpendicular to the rear half of the sabre (gear and pommel).

 

[Serafino]

I doubt that whatever's under the glue on the handwheel side is a part of the gear, there are strong signs that the gear was cut down on that side--the rounding of the tooth ends is erratic and crude.

Killdozer--yeah the proportions in the manual drawing are awful, I'm hoping that's 'artist rendering' effects. If the part actually looks like that it's gonna be the closest miss I've ever seen, and a bunch of people are going to be running around with the least accurate emitters yet... :lol

 

[Gigatron]

Hey gang,
Been looking at cutaways since yesterday. Found some really nice high res pics of the RR nene, which is just an upraded derwent. All the cutaways have the intercouplers removed, but they do show some pretty decent pics of the wheelcase and internal gears. I'm still looking into either the impeller drive shaft or part of the starter drive system (that is if it came from a derwent). I pray the gear isn't from something else altogether.

I'll upload the pics either tonight or tomorrow. It's hard to believe there are so few pictures out there.

If nothing else comes of this, at least I can get certified as a damn derwent mechanic :lol.

-Fred

 

[Treadwell]

Great job, once again..

(And I didn't even pooh-pooh this one. )

 

[PHArchivist]

Not sure about you guys, but I'd MUCH rather see a separate thread for the gear...

Be easier to track stuff instead of switching back and forth from part to part with every third post or whatever...

 

[amish]

Id have to agree on the gear seperation. Maybe a mod can split and stick the thread. Otherwise, great job by everyone.

 

[Serafino]

Maybe someone who wants the split to happen can get the relevant post numbers and send them to a mod to make it easier for them to oblige us?

 

[Sporak]

Excellent my friend...
Excitement abounds...

Originally posted by Serafino@Sep 30 2005, 06:18 AM
Sporak--I'm going to contact Rolls-Royce archive about blueprints.  I just found out a friend of mine knows someone who works at Rolls aeronautics in UK. 

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[Prop Runner]

Originally posted by Serafino@Oct 1 2005, 03:40 AM
Maybe someone who wants the split to happen can get the relevant post numbers and send them to a mod to make it easier for them to oblige us? 

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I nominate you :lol Who seconds?

 

[James Kenobi 1138]

If it turns out this is the part, and we can find an aircraft supplier who carries it, maybe we could put together a bulk order for everyone interested. I'm sure like cars there has to be someone who makes replacement parts for maintance and rebuilds and such, and parts made to OEM standarts. Something like a jet engine would require exact duplicate parts for repairs I would imagine.

 

[Prop Runner]

Originally posted by James Kenobi 1138@Oct 1 2005, 07:17 AM
If it turns out this is the part, and we can find an aircraft supplier who carries it, maybe we could put together a bulk order for everyone interested.  I'm sure like cars there has to be someone who makes replacement parts for maintance and rebuilds and such, and parts made to OEM standarts.  Something like a jet engine would require exact duplicate parts for repairs I would imagine.

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James,

We're talking about a 60 year old engine made for planes that haven't flown in nearly 40, except for a handful at museums, and those most likely have original or custom rebuilt parts in their engines. Don't expect to find MOPAR dealers for a Dewert Mk. 8 - I just don't think there's much demand... Having said that, it is possible Rolce Royce contracts with aerospace-grade machine shops to provide non-stock replacement parts for vintage engines. Hopefully our RR contact can shed more light on this angle.

The problem is, if you knew what high-grade materials and ridiculous machining tolerances are used in the manufacture of aerospace parts, you wouldn't have posted to begin with, lol. If RR blueprints of an interconnector can be found, or if an interconnector in good condition can be put to calipers and reverse-engineered, any machine shop could knock these out. And remember you'd still need some sort of spacer/adapter ring to connect it to the grenade.

- Gabe

 

[Darth Lars]

I found some pics of replica RR Nene parts on the web site of Harrington in Canada who made them. (click on Applications and then engines).
The Nene did have the same interconnect did it.. or am I wrong?
I saw some in a pics once that was very close though.

 

[Gigatron]

I've been pouring over photos of the nene for days now, and while the nene is definitely based on the derwent, there appear to be a lot of upgrades. Unfortunately for us, one of them appears to be in the interconnecter. Here are some pics that I've been looking at:

First an overall cutuaway pic of the nene engine:
[attachmentid=4884]

now a closeup of the upper combustion chamber. I boxed in the area of two holes that could possibly be the interconnecter:

A closeup of the the bottom combustion chamber showing a possible external flange of the interconnecter:
[attachmentid=4886]

Whenever they do these cutaways, they always remove the coupler. They leave half the igniter torch, but never the damn coupler. It's a conspiracy :lol

 

[Gigatron]

Originally posted by James Kenobi 1138@Oct 1 2005, 07:17 AM
If it turns out this is the part, and we can find an aircraft supplier who carries it, maybe we could put together a bulk order for everyone interested.  I'm sure like cars there has to be someone who makes replacement parts for maintance and rebuilds and such, and parts made to OEM standarts.  Something like a jet engine would require exact duplicate parts for repairs I would imagine.

[snapback]1087752[/snapback]​

To be honest, while I would love the exact real piece (especially after having to look at diagrams of it for days on end), I would be happy with an exact replica (right down to every last dimension). So even if we could get just one, just so everyone who's interested could get an exact copy, I think it would be great.

What I would love to do though is get an original grenade, the original coupler, some real exactra bubbles (still on the calc board), the gear (once we figure it out) and a real graflex clamp and display them all next to a nice replica of the obi saber. Kind of a like a before and after and to show what's different between what we've extrapolated from pictures and the real deal.

-Fred

 

[Durasteel Corporation]

It's a conspiracy

Yup. Lucas and Derwent go way back.

 

[Gigatron]

Originally posted by Durasteel Corporation@Oct 2 2005, 12:52 AM

It's a conspiracy

Yup. Lucas and Derwent go way back.

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Actually, I think it's Lucas and the derwent museum rebuilders that are in cahoots. Lucas tells them, "look we're probably goin' to have a bunch geeks lookin' for this part, so when ever you come across one, throw it away and pretend you don't know what they're talking about"

That's my theory anyway :lol.

-Fred

 

[Prop Runner]

Here's where I expect to hopefully find our gear in the Dewert.

[attachmentid=4888]

In diagram form:

[attachmentid=4889]

 

[Gigatron]

Yup, that's been my theory all along. The cutaway engine though, is the nene, so there are going to be slight differences, especially in that area.

Whoever had the contact that confirmed the interconnector may be able to get a pic of the impeller driveshaft gear/spline (wherever it connects to the wheelcase).

Every pic of the mk.8 i have seen is taken at such an angle that I can't see any of the gears up there. If there are any british members near any of the museums that have one on display, please see if you can get a pic of the wheelcase where the drive shaft goes in. We need to verify number of teeth, size and shape.

-Fred