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May 19, 2013, 6:12am

Model Engineering Clearing House :: General :: General Chat :: Lynton & Barnstaple

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Topic: Lynton & Barnstaple (Read 1,790 times)

paulingram
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Re: Lynton & Barnstaple
« Reply #20 on Mar 21, 2012, 2:08pm »

Just a quick update. Had a bit of time to spend since the weekend so did some work on the reverser and tin work.

Still a lot of detail to go into these parts, just sorting out the general arrangement and making sure nothing hits anything it shouldnt at this stage.

The big gap around the boiler in the front of the cab was a guesstimate to allow for cladding.

[image]

All the best

Paul

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elj221c
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Re: Lynton & Barnstaple
« Reply #21 on Mar 22, 2012, 2:48pm »

I'm thoroughly confused here. I love the locomotive but not the drawings! Am I the only one who sees these drawings with a reversed perspective?

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paulingram
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Re: Lynton & Barnstaple
« Reply #22 on Mar 22, 2012, 7:08pm »

Ok, here is a view with perspective.

Paul

[image]

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jma1009
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Re: Lynton & Barnstaple
« Reply #23 on Mar 22, 2012, 7:15pm »

paul,
glad to see this last drawing has the raised firebox!

i must admit i would be tempted to do Les Warnett's design double size for 7.5"g. if LYD hadnt been built i might have been tempted to have a go myself.
cheers,
julian

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elj221c
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Re: Lynton & Barnstaple
« Reply #24 on Mar 23, 2012, 3:01pm »

Mar 22, 2012, 7:08pm, paulingram wrote:

Ok, here is a view with perspective.

Paul

Don't think so. There doesn't appear to be a vanishing point.

It does look better, though!

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paulingram
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Re: Lynton & Barnstaple
« Reply #25 on Mar 24, 2012, 12:40pm »

A short (10 second) video showing the left side motion.

It looks a bit wierd until you click on the image and the video actually starts

Paul

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steam4ian
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Re: Lynton & Barnstaple
« Reply #26 on Mar 29, 2012, 10:45am »

G'day Paul

I had to look at the video twice to recognise it a Joy motion with compensation provided by the rod of the return crank.

Good work

Regards
Ian

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cotswold
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Re: Lynton & Barnstaple
« Reply #27 on Mar 31, 2012, 7:05am »

Mar 29, 2012, 10:45am, steam4ian wrote:

G'day Paul

I had to look at the video twice to recognize it a Joy motion with compensation provided by the rod of the return crank.

Horizontal Joy? It makes a lot of sense because it removes the unwanted inaccuracies caused by vertical movement of a sprung wheel. Is it still Joy gear ... cue Don Ashton

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Mike
CSME <http://www.cheltsme.org.uk>
5" gauge (2 1/2" scale) Alice class Hunslet

donashton
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Re: Lynton & Barnstaple
« Reply #28 on Mar 31, 2012, 10:03am »

It is standard Joy gear. The return crank replaces the fixed point anchor and does not serve as compensation at all.

Don

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nonort
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Re: Lynton & Barnstaple
« Reply #29 on Mar 31, 2012, 2:26pm »

Going back to the boiler free area. I solved the problem by moving the front tube plate back into the barrel 3" on a five inch gauge engine. I believe J Ewins advocated this in some of his work, it also has the advantage of making the smoke box larger which seems to even out the draft at the firebox end. I suppose its extra volume acts as a plenum chamber. Another advantage is it gives more space for the smoke box plumbing, i would suggest using individual elements for the super heaters with industrial fittings on there ends easy to to blank off and cheap to replace. Large ball valve for the regulator simples!

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hudson
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Re: Lynton & Barnstaple
« Reply #30 on Apr 1, 2012, 3:36pm »

Hi,

A nice video showing amongst other engines a L & B locomotive is
on

http://www.railtv.fr/Players/PlayerFlash.aspx?Id=4136

Best regards,
hudson

A lot of other videos can be found at the same address.

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