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Author Topic: SR Lord Nelson possible 3D print  (Read 3947 times)

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Offline Stevie DC

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Re: SR Lord Nelson possible 3D print
« Reply #105 on: March 30, 2020, 09:20:23 PM »
Yes, I have three sets of drawings and they are all different so quite a lot of interpretation needed from photos.

Always the way, isn't it.  :smiley-laughing: I'm sure that your Nelson will be excellent though.  :D

Offline Snowwolflair

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Re: SR Lord Nelson possible 3D print
« Reply #106 on: March 30, 2020, 09:24:16 PM »
Yes, I have three sets of drawings and they are all different so quite a lot of interpretation needed from photos.

Always the way, isn't it.  :smiley-laughing: I'm sure that your Nelson will be excellent though.  :D

But then no two locos in a class were ever the same either and each one changed through their life.  I tend to pick a really good photo and built it to that version on that day.

Offline Dorsetmike

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Re: SR Lord Nelson possible 3D print
« Reply #107 on: March 30, 2020, 09:26:57 PM »
I think I've still got a Skinley 4mm drawing, quite easy to rescale. If I find that one I'll probably find the T9, M7 and A12 among others. I'm gonna have to go in that spare bedjunk room and have a good hunt, I have to move a chair, 2 folded tables & 3 big storage boxes just to get in the door.
Cheers MIKE
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Offline Dorsetmike

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Re: SR Lord Nelson possible 3D print
« Reply #108 on: March 30, 2020, 09:59:27 PM »
Up to '38 there were 3 obvious/visible variants one of each, 6'3" drivers, 859,  larger round topped boiler, 857 in 1937,  and Kylchap chimney- 862 from 1934; less obvious except for balance weights was 865 in 1933, crank settings to 90 giving 4 exhausr beats instead of 135 giving 8 beats. There was one boiler which had no capuchon on the chimney, this circulated and was noted on 861, 856, 858 and 865, I don't have dates for that but it will have been pre Bulleids Lemaitre chimneys.

The high sided tender appeared first on 852 nov '37, 855 aug '38, remainder between '38 and 860 last Dec '39. Flaman speed recorders were fitted between aug 38 to 855, whole class fitted by end '40 last being 963

(Details from DW Winkworth's "Maunsell's Nelsons)
Cheers MIKE
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Offline Snowwolflair

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Re: SR Lord Nelson possible 3D print
« Reply #109 on: April 17, 2020, 11:02:49 AM »
Im holding while I get more photos as the shape of the firebox curves in at the bottom but no drawing shows this and as it's a complicated shape I don't want to have to guess.




Offline Highland Handlebar

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Re: SR Lord Nelson possible 3D print
« Reply #110 on: April 17, 2020, 11:14:14 AM »
Do you have the Roche drawing?

Offline Snowwolflair

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Re: SR Lord Nelson possible 3D print
« Reply #111 on: April 17, 2020, 11:42:34 AM »
No, the best I have on the firebox is this, but i'm still unsure how accurate it is.




Offline Highland Handlebar

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Re: SR Lord Nelson possible 3D print
« Reply #112 on: April 17, 2020, 11:48:00 AM »
I have the Roche drawing which is highly regarded, I can scan it and send it to you if I can have your e-mail address

Offline Hailstone

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Re: SR Lord Nelson possible 3D print
« Reply #113 on: April 17, 2020, 11:50:12 AM »
David,

I have the Ian Allan book of Roche drawings and the Lord Nelson is on page 85 - shall I try to scan it for you?

Regards,

Alex

Offline Dorsetmike

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Re: SR Lord Nelson possible 3D print
« Reply #114 on: April 17, 2020, 01:51:10 PM »
Im holding while I get more photos as the shape of the firebox curves in at the bottom but no drawing shows this and as it's a complicated shape I don't want to have to guess
From photos in the Winkworth book the fireboxe looks to follow the curve of the boiler from handrail level down but a couple of inches or so wider.

Put me down for 2 or 3 if/when they surface.
Cheers MIKE
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Offline Snowwolflair

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Re: SR Lord Nelson possible 3D print
« Reply #115 on: April 17, 2020, 01:57:51 PM »
Im holding while I get more photos as the shape of the firebox curves in at the bottom but no drawing shows this and as it's a complicated shape I don't want to have to guess
From photos in the Winkworth book the fireboxe looks to follow the curve of the boiler from handrail level down but a couple of inches or so wider.

Put me down for 2 or 3 if/when they surface.

That's what I believe, however drawings vary.  As I am using tender drive I can include the taper fully.  My work area is full of paint transfers and varnish at the moment but I plan to sit down and examine everything I have in the way of information over the weekend and then re-draw the firebox. 

Offline Snowwolflair

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Re: SR Lord Nelson possible 3D print
« Reply #116 on: April 19, 2020, 08:23:12 PM »
I am much happier with this.  It matches the best drawings I have and looks correct to the photos I have.



 

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