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Pewsey Skills day 6th August

 

A quick note to say that the Wiltshire 009 group are hosting a skills day on 6th August in Pewsey and I will be flying the 7mm flag with have-a-go sessions for spiked track and can demo/help with Zamzoodled couplings.

Get there early to enjoy the fabled lardy cake

John
Narrow Gauge & Industrial Railway Modelling REVIEW

 

Issue 107 has been sent to the printers.


Despatch to UK subscribers should occur towards the end of July. EU and 'Rest of World' copies go out from the mailing facilitator as soon as the minimum economic number of items is reached - but those furthest away from the UK should have their copies within the next 3-4 weeks.

?

This is a ‘Locomotive Modelling Special’ and the contents are as follows:


? Backwoods Miniatures Russell in 009 - Brian Love (includes scale drawings)

? Moel y Gest - O14 model by David John & Chris Clark

? Criggion Quarry's Sardine Can - Sentinel SG loco described by?Tim Shackleton (with Drawing)

? 7mm O14 Kerr Stuart Wren - Giles Favell builds the Mark Clark kit

? An Introduction to Kerr Stuart Wren Type Locos - Bill Dickens (with drawings)

? O14 Simplex 20hp Tractor - David Cramphorn builds the Nigel Lawson kit

? A Foster Haulage Locomotive - A 'might have been' described by Stuart L Baker (with drawings)

? Bigger 3d Printed Bagnalls - 1:24 scale by Steve Holland

? 24hp Hudson Hunslet in 4mm Scale - Designing and producing a kit by Mark Greenwood

? With the usual product and book reviews, plus readers letters and ‘Jottings’.


If your subscription expired with issue 106 and you have not yet renewed, there is still time to do so. It helps a great deal - and avoids the need for us to send out reminders.
Re: comparisoin of 3D printing processes requested

 

I have purchased many items from Shapeways in HO, O and 1/35.

I love them all.

Their O scale antlers are superb and fill a need I have had for years.

Their small diesel shells for HHn30 are great.

I have bought two diesel shells for On30.

The slightly rough texture is fine for me as I like to weather all my small industrial diesels.

The 1/35 Decauville shell is great. ?All I need is a good mechanism for it.

What more can I say.

Their O scale Coke bottles and crates are wonderful.

All are costly but great to finally have.

Photos of most of the above are available upon request.

Darryl Huffman
darrylhuffman@...




On Thursday, June 9, 2016, 10:33 AM, Craig Parry thrustanparry7144@... [O14] wrote:


--------------------------------------------
On Thu, 6/9/16, mjm@... [O14] <O14@...> wrote:

Subject: [O14] comparisoin of 3D printing processes requested
To: O14@...
Date: Thursday, June 9, 2016, 2:02 AM


?I have a 1/32nd Bagnall by Brack done in Shapeways FUD.? The detail is great but there is a lot of stepping to deal with.? I would only order 3d printed items in the future with a completely smooth surface.

Regards,

Craig



?


? ?
? ? ?
? ? ?
? ? ? Has anyone had any experience with 3D
printing from cwrailways.com (owned by Time Evans)? He is
offering a 16micron layers process and the photos show a
reasonably smooth surface.
By comparison has anyone
had experience with Shapeways' "Frosted Extreme
Detail" (16micron layers) or their "High
Definition Acrylate" (50micron
layers).
With the little bit of 3D
printing that I have done I feel a smooth surface with
minimum "stepping" visible?on the layers is more
important than actual minimum detail size. Previous
experience with the Shapeways' "Frosted Ultra
Detail" process also had a textured surface where the
wax support structure was in contact with the
model.
Any comments on the
quality/smoothness of the various processes or value for
money is appreciated.
Regards,Michael
Milway

? ?
? ? ?

? ?
? ?



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------------------------------------
Posted by: Craig Parry <thrustanparry7144@...>
------------------------------------

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Re: comparisoin of 3D printing processes requested

 

--------------------------------------------

On Thu, 6/9/16, mjm@... [O14] <O14@...> wrote:

Subject: [O14] comparisoin of 3D printing processes requested
To: O14@...
Date: Thursday, June 9, 2016, 2:02 AM


?I have a 1/32nd Bagnall by Brack done in Shapeways FUD. The detail is great but there is a lot of stepping to deal with. I would only order 3d printed items in the future with a completely smooth surface.

Regards,

Craig









Has anyone had any experience with 3D
printing from cwrailways.com (owned by Time Evans)? He is
offering a 16micron layers process and the photos show a
reasonably smooth surface.
By comparison has anyone
had experience with Shapeways' "Frosted Extreme
Detail" (16micron layers) or their "High
Definition Acrylate" (50micron
layers).
With the little bit of 3D
printing that I have done I feel a smooth surface with
minimum "stepping" visible?on the layers is more
important than actual minimum detail size. Previous
experience with the Shapeways' "Frosted Ultra
Detail" process also had a textured surface where the
wax support structure was in contact with the
model.
Any comments on the
quality/smoothness of the various processes or value for
money is appreciated.
Regards,Michael
Milway









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Re: comparisoin of 3D printing processes requested

 

开云体育

I've used cw for 3D pattern production when Chris ran the company. Very good for patterns material can be a little fragile for production models so we only use them for patterns?
Marc?
Furnessrailway wagon Co


On 9 Jun 2016, at 07:04, mjm@... [O14] <O14@...> wrote:

?

Has anyone had any experience with 3D printing from (owned by Time Evans)? He is offering a 16micron layers process and the photos show a reasonably smooth surface.


By comparison has anyone had experience with Shapeways' "Frosted Extreme Detail" (16micron layers) or their "High Definition Acrylate" (50micron layers).


With the little bit of 3D printing that I have done I feel a smooth surface with minimum "stepping" visible?on the layers is more important than actual minimum detail size. Previous experience with the Shapeways' "Frosted Ultra Detail" process also had a textured surface where the wax support structure was in contact with the model.


Any comments on the quality/smoothness of the various processes or value for money is appreciated.


Regards,

Michael Milway
comparisoin of 3D printing processes requested

 

Has anyone had any experience with 3D printing from cwrailways.com (owned by Time Evans)? He is offering a 16micron layers process and the photos show a reasonably smooth surface.


By comparison has anyone had experience with Shapeways' "Frosted Extreme Detail" (16micron layers) or their "High Definition Acrylate" (50micron layers).


With the little bit of 3D printing that I have done I feel a smooth surface with minimum "stepping" visible?on the layers is more important than actual minimum detail size. Previous experience with the Shapeways' "Frosted Ultra Detail" process also had a textured surface where the wax support structure was in contact with the model.


Any comments on the quality/smoothness of the various processes or value for money is appreciated.


Regards,

Michael Milway
Re: Rhyd website updated

 

Very nice - thanks for sharing. I have always enjoyed the "slate" villages. I have been a NG&IR subscriber since the beginning.

Got to visit about 10 years ago when our son was working in the UK but did not get to ride the narrow gauge as they were closed for the season.

On my bucket list.

Bill Uffelman
Ocean View DE?


On Tue, May 3, 2016 at 2:36 PM, davidphillipjohn@... [O14]
wrote:
?

Web-site Revision ?finished!


Work has been progressing on many fronts but I have taken the opportunity to revise the web-site.


All the new locos are there. The information has been up-dated but the major change has been the inclusion of ‘Previous’ and ‘Next Page’ buttons on each page to make browsing a lot easier.


Please have a look and I hope you like the changes.



Cheers


David
Rhyd website updated

 

Web-site Revision ?finished!


Work has been progressing on many fronts but I have taken the opportunity to revise the web-site.


All the new locos are there. The information has been up-dated but the major change has been the inclusion of ‘Previous’ and ‘Next Page’ buttons on each page to make browsing a lot easier.


Please have a look and I hope you like the changes.



Cheers


David
Amberley Museum Spring Industrial Trains Day Sunday April 17th

 

?

Full details in the attachment
Narrow Gauge & Industrial Railway Modelling REVIEW

 

REVIEW issue 106 has been sent to the printers.
?
Despatch to UK subscribers should occur during the third week of April. EU and 'Rest of World' copies go out from the mailing facilitator as soon as the minimum economic number of items is reached - but those furthest away from the UK should have their copies within the next 3-4 weeks.
?
Contents as follows:
?
? Penorwic Slate Quarry revisited - Jonathan Matthews updates readers on his 0-16.5 layout.
? A 16mm Ruston LBT - scratchbuilding with David Barham.
? Stronach-Dutton Roadrail System - Fowler Tractor Bogie - drawings and photos from Stuart Baker.
? It’s a Gas - Dennis Harrison describes how he filled the final corner on the Towy Valley Tramway.
? Four Midlands Ironstone Tramways - Part 2, Kettering Furnaces. By Dan Quine (with maps and drawings).
? Ynys Gwyntog - Alex Duckworth brings the story up to date.
? The Kerr Stuart Tattoo class - origins described by expert Bill Dickins.
? With the usual product and book reviews, plus readers letters and ‘Jottings’.


A subscritption to the REVIEW and back issues can be ordered from the website at:

?
Re: Merddin Emrys

 

Hi Paul

She looks magnificent - looking forward to seeing all the little bells and whistles you have added (no doubt).

Lovely job.

Regards

David



From: "heatonwood@... [O14]"
To: O14@...
Sent: Tuesday, 2 February 2016, 20:02
Subject: [O14] Merddin Emrys

?
My EDM kit is almost ready for the paint shops. I have posted some photos in the photo pages. Only if you are interested of course. Paul


Re: Merddin Emrys

 

Hi Paul,

Of course we are interested! It looks stunning. Please post more once it's been painted.

John
Merddin Emrys

 

My EDM kit is almost ready for the paint shops. I have posted some photos in the photo pages. Only if you are interested of course. Paul
SAR Bell Link & Pin Coupling

 

开云体育

Here is some short videos of 7mm scale SAR bell type link & pins coupling which I redesigned so the could couple up automatically and you can either use a magnet mounted under the track or just push the dummy pin back toward the headstock of the wagon to uncouple
<>
?
<>
Brian
Rawbelle County Workshops
Qld. Aust.
?
Re: Loco Weights

 

开云体育

Thank you all for your good advice. David & John’s weights for similar-ish locos are showing a pattern. Apart from that St*&%@?d gauge thing - which I’d spotted on your blog, and then ferreted out the K1 articles in NG&I to see if that had weights.

Brian’s method would be ideal if I had more than 15” of track! I’m hoping to see it move further and a little quicker at Mickleover on Saturday, where Paul has suggested he’ll have a test-track. Perhaps I should dig out some wagons too.

In the meantime, by Sunday night it had reached 474g (with about 20g more over the motor) and tonight I’ve brought it up to what turns out to be 509g, before cab detail, white metal driver (still to be acquired) and paint (though I hope there won’t be enough of that to count in the mass stakes.

Cheers
Simon


On 24 Jan 2016, at 16:14, David John davidphillipjohn@... [O14] <O14@...> wrote:


Hi Simon

My "rebuilt Funkey" Vale of Ffestiniog weighs in at 524gm.? She has a BullAnt 8w drive chassis, runs superbly and is a good hauler.

Hope this help

Cheers

David



From:?"Simon Jones simon@... [O14]" <O14@...>
To:?O14@...?
Sent:?Sunday, 24 January 2016, 9:51
Subject:?[O14] Loco Weights

?
I thought we'd had this conversation in the group before, but can't find a reference...

Is there a rule of thumb for adding weight to a loco - enough to make the most of its power without adding unnecessary strain?

I'm actually getting close to finishing a loco; the prototype is a petrol-electric bogie unit.

The model is plastic and with one powered bullant unit. Ideally, I'd like it to pull half a dozen wrightlines WDLR wagons which have some rolling resistance as they're mostly from the non-pinpoint bearing era.

Before adding weight the loco is 125g and barely enough mass to avoid wheels pin on its own. I've enough lead prepared to fit the body she'll to bring it up to 350g. I've no shortage of lead and plenty of space.

What's the mass is similar locos out there- could equally be a Garrett, funkey, Fairlie. And if powered on just 1 bogie, how is the weight distributed?

Cheers
Simon
Re: Loco Weights

 

Hi Simon

My "rebuilt Funkey" Vale of Ffestiniog weighs in at 524gm.? She has a BullAnt 8w drive chassis, runs superbly and is a good hauler.

Hope this help

Cheers

David



From: "Simon Jones simon@... [O14]"
To: O14@...
Sent: Sunday, 24 January 2016, 9:51
Subject: [O14] Loco Weights

?
I thought we'd had this conversation in the group before, but can't find a reference...

Is there a rule of thumb for adding weight to a loco - enough to make the most of its power without adding unnecessary strain?

I'm actually getting close to finishing a loco; the prototype is a petrol-electric bogie unit.

The model is plastic and with one powered bullant unit. Ideally, I'd like it to pull half a dozen wrightlines WDLR wagons which have some rolling resistance as they're mostly from the non-pinpoint bearing era.

Before adding weight the loco is 125g and barely enough mass to avoid wheels pin on its own. I've enough lead prepared to fit the body she'll to bring it up to 350g. I've no shortage of lead and plenty of space.

What's the mass is similar locos out there- could equally be a Garrett, funkey, Fairlie. And if powered on just 1 bogie, how is the weight distributed?

Cheers
Simon
Re: Loco Weights

 

Hi Simon,

A quick?weigh up?of my PLR stock is as follows:

L&B style Manning Wardle 2-6-2 (scratch built) - 520g
WD Baldwin 4-6-0 - 510g
K1 Garratt 0-4-0 + 0-4-0 - 540g - front engine 240g & rear engine 300g
And for contrast my Scale 7 GWR 2-6-2 prairie is going to be about 1.4kg.

K1 will pull everything I've got, the Baldwin is pretty good and the?Manning Wardle has always been the poorest hauler on the line.

I hope this helps.
John

On 24 Jan 2016, at 09:51, Simon Jones simon@... [O14] wrote:

?

I thought we'd had this conversation in the group before, but can't find a reference...

Is there a rule of thumb for adding weight to a loco - enough to make the most of its power without adding unnecessary strain?

I'm actually getting close to finishing a loco; the prototype is a petrol-electric bogie unit.

The model is plastic and with one powered bullant unit. Ideally, I'd like it to pull half a dozen wrightlines WDLR wagons which have some rolling resistance as they're mostly from the non-pinpoint bearing era.

Before adding weight the loco is 125g and barely enough mass to avoid wheels pin on its own. I've enough lead prepared to fit the body she'll to bring it up to 350g. I've no shortage of lead and plenty of space.

What's the mass is similar locos out there- could equally be a Garrett, funkey, Fairlie. And if powered on just 1 bogie, how is the weight distributed?

Cheers
Simon
Re: Loco Weights

 

Simon,
You are better off trying to keep the weight equal on both ends, that way the loco will behave equally, this means you need to have slightly more weight added to the non drive [powered] end, because you have to allow for the weight of the Bullant drive, now as for how much weight you can add, you need to look at what your overall ratio is on your drive system take a look at the specs. on the motor and calculate based on the ratio as to what rpm. the motor is going to be running when the loco is travelling at the nominal scale speed, ideally your motor is going to be running at or near its maximum torque output at that speed, but if not it doesn't matter too much, the main value you need to take note of is the nominal current draw is when the motor is running at its maximum torque, its is this value that you need to aim for.
Now you need to set your loco up so it has a load to pull and set up your multi meter to read m/amps., try driving the loco to pull the load, if you get wheelslip, add some more weight to each end of the loco and try again, at the sametime keep checking the current draw, keep repeating this process until the loco can pull the load comfortably or you reach that current draw limit, remember it is better to have the wheels being able to slip rather then having too much weight and the wheels not being able to slip, because that will stall the motor and burn it out.



Brian
Rawbelle County Workshops
Qld. Aust.

-----Original Message-----
From: Simon Jones simon@... [O14]
Sent: Sunday, January 24, 2016 7:51 PM
To: O14@...
Subject: [O14] Loco Weights

I thought we'd had this conversation in the group before, but can't find a reference...

Is there a rule of thumb for adding weight to a loco - enough to make the most of its power without adding unnecessary strain?

I'm actually getting close to finishing a loco; the prototype is a petrol-electric bogie unit.

The model is plastic and with one powered bullant unit. Ideally, I'd like it to pull half a dozen wrightlines WDLR wagons which have some rolling resistance as they're mostly from the non-pinpoint bearing era.

Before adding weight the loco is 125g and barely enough mass to avoid wheels pin on its own. I've enough lead prepared to fit the body she'll to bring it up to 350g. I've no shortage of lead and plenty of space.

What's the mass is similar locos out there- could equally be a Garrett, funkey, Fairlie. And if powered on just 1 bogie, how is the weight distributed?

Cheers
Simon

------------------------------------
Posted by: Simon Jones <simon@...>
------------------------------------

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Re: Loco Weights

 

开云体育

Simon,
Are there any gradients in your WDLR scenario? I suspect your answer is going to be down to trial and error on your part. Put a pannier on your loco and add weights until you get the traction you need, where you need it, then transfer the equivalent weight to under the body. Don't forget to add typical loads to your wagons first!
I can only speak from observing the effect on others' layouts when I say DON'T graphite your track.
David

To: O14@...
From: O14@...
Date: Sun, 24 Jan 2016 09:51:48 +0000
Subject: [O14] Loco Weights

?
I thought we'd had this conversation in the group before, but can't find a reference...

Is there a rule of thumb for adding weight to a loco - enough to make the most of its power without adding unnecessary strain?

I'm actually getting close to finishing a loco; the prototype is a petrol-electric bogie unit.

The model is plastic and with one powered bullant unit. Ideally, I'd like it to pull half a dozen wrightlines WDLR wagons which have some rolling resistance as they're mostly from the non-pinpoint bearing era.

Before adding weight the loco is 125g and barely enough mass to avoid wheels pin on its own. I've enough lead prepared to fit the body she'll to bring it up to 350g. I've no shortage of lead and plenty of space.

What's the mass is similar locos out there- could equally be a Garrett, funkey, Fairlie. And if powered on just 1 bogie, how is the weight distributed?

Cheers
Simon
Loco Weights

 

I thought we'd had this conversation in the group before, but can't find a reference...

Is there a rule of thumb for adding weight to a loco - enough to make the most of its power without adding unnecessary strain?

I'm actually getting close to finishing a loco; the prototype is a petrol-electric bogie unit.

The model is plastic and with one powered bullant unit. Ideally, I'd like it to pull half a dozen wrightlines WDLR wagons which have some rolling resistance as they're mostly from the non-pinpoint bearing era.

Before adding weight the loco is 125g and barely enough mass to avoid wheels pin on its own. I've enough lead prepared to fit the body she'll to bring it up to 350g. I've no shortage of lead and plenty of space.

What's the mass is similar locos out there- could equally be a Garrett, funkey, Fairlie. And if powered on just 1 bogie, how is the weight distributed?

Cheers
Simon
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