Re: 21mm gauge wheel & track standards
Hi David,
1mm is what the scale seven group recommend for standard gauge track. You may want to review your dimensions against their standards here:??with the appropriate deduction of gauge difference.
John
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Re: 21mm gauge wheel & track standards
Thanks Marc, I make that 1mm which is what I was thinking?of. I can use a coffee stirred to set the clearance.?
Hi David I used my 0-14 track gauge as a guide and moved the rail centres out.
Marc
Hello,
I am building a short 3 foot [21mm gauge] line as a pilot project. I'm using the Slaters wheels.
Today I'm building the first point. I can't find any data on the track or wheel standards?other than measuring the wheels. What I need to know is the flangeway clearance to use in the crossing.
Back-Back: 19mm?
Flange thickness: 0.5mm
Back-Front: 19.5?
Check gauge: 19.5
Track gauge: 20mm
Wheel flange & tread: 3mm
I have the parts cut and ready to go. I'm inclined to make the flangeway clearance 1mm [thickness of a wooden coffee stirrer] and see how it goes.?
Advice welcome.
David?
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Re: 21mm gauge wheel & track standards
David,
If you imagine your wheelset going through a crossing, if the face of the flange just kisses the nose, the distance from the nose (essentially the running rail) to the face of the flange is zero.
Adding your dimensions, the distance from the running rail to the back of the flange must be 0.5mm.
The distance to the back of the opposite flange is another 19mm, therefore 19.5mm. The checkrail therefore, needs to be at least 19.5mm from the running rail in order to pull the wheelset clear of the nose..
Where you have two check rails, each 19.5mm from the opposite running rail, the distance over them would then be 18mm. As the back to back is 19mm, you have 1mm to play with. This can be used to reduce this clearance by moving each check rail closer to it's nearest running rail which will also pull the wheelset away from the nose.
If you move each checkrail out by say 0.3mm, the distance over them is 18.6mm giving you 0.4mm clearance from the back to back, and pulling the flange 0.3mm away from the nose.
So I would suggest setting each checkrail 19.8mm from the opposite running rail.??This is the check rail gauge and should always be used for setting a check rail. The flangeway is a derived figure and will vary as the gauge varies, whether by mistake or purposeful gauge widening.
Or do as Marc suggests.
Dave.
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Re: 21mm gauge wheel & track standards
David, ? Find a gauge with the right crossing/check rail details. If you have access to lathe, drill a hole through the centre. Cut the gauge in half. Tap both holes and put a bolt through. You can screw one end in and out until the gauge is right. ? I have some gauges which are a bolt with various washers on it held apart with a tube spacer. I think they were C&L but that's not the ones I've seen recently. If you can locate a source, just needs a longer bolt and spacer. ? Frank ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Marc Dobson
Sent: Tuesday, 14 April, 2020 11:06
To: [email protected]
Subject: Re: [o14] 21mm gauge wheel & track standards? Hi David I used my 0-14 track gauge as a guide and moved the rail centres out.
Hello, ? I am building a short 3 foot [21mm gauge] line as a pilot project. I'm using the Slaters wheels. Today I'm building the first point. I can't find any data on the track or wheel standards?other than measuring the wheels. What I need to know is the flangeway clearance to use in the crossing. Flange thickness: 0.5mm
Back-Front: 19.5?
Check gauge: 19.5
Track gauge: 20mm
Wheel flange & tread: 3mm I have the parts cut and ready to go. I'm inclined to make the flangeway clearance 1mm [thickness of a wooden coffee stirrer] and see how it goes.?
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Re: 21mm gauge wheel & track standards
Hi David I used my 0-14 track gauge as a guide and moved the rail centres out.
Marc
toggle quoted message
Show quoted text
Hello,
I am building a short 3 foot [21mm gauge] line as a pilot project. I'm using the Slaters wheels.
Today I'm building the first point. I can't find any data on the track or wheel standards?other than measuring the wheels. What I need to know is the flangeway clearance to use in the crossing.
Back-Back: 19mm?
Flange thickness: 0.5mm
Back-Front: 19.5?
Check gauge: 19.5
Track gauge: 20mm
Wheel flange & tread: 3mm
I have the parts cut and ready to go. I'm inclined to make the flangeway clearance 1mm [thickness of a wooden coffee stirrer] and see how it goes.?
Advice welcome.
David?
|
21mm gauge wheel & track standards
Hello, I am building a short 3 foot [21mm gauge] line as a pilot project. I'm using the Slaters wheels.
Today I'm building the first point. I can't find any data on the track or wheel standards?other than measuring the wheels. What I need to know is the flangeway clearance to use in the crossing.
Back-Back: 19mm? Flange thickness: 0.5mm
Back-Front: 19.5?
Check gauge: 19.5
Track gauge: 20mm
Wheel flange & tread: 3mm
I have the parts cut and ready to go. I'm inclined to make the flangeway clearance 1mm [thickness of a wooden coffee stirrer] and see how it goes.?
Advice welcome.
David?
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Hi,
Thanks for your help. The diagram was exactly what I was looking for. Unfortunately the book sold overnight. Bit miffed but oh well! Spent yesterday looking at photos on the old web. Lovely little railway! Thanks again all of you for giving me aid.?
Davidl
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There is a sketch of the harbour station track plan here,
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Have you found the nordic digital museum yet?? Many good pictures there.? If not, i can post some links in the morning
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E.g.??
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Best regards from Stockholm,? George!?
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Sent from my Samsung Galaxy smartphone.
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-------- Original message --------
From: David Massingham <ezeebob@...>
Date: 09/04/2020 18:07 (GMT+01:00)
Subject: Re: [o14] Nattrabybanan
?
I think you could be right. I think that there were 2 60cm stations in Nattraby,? Nattraby itself and Nattrabyhamn. The latter one has caught my interest.? 
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is this the book you were looking for ?
On Thu, 9 Apr 2020 at 18:11, David Massingham < ezeebob@...> wrote: The upper set of tracks are the 60cm tracks. the track leading out from head to Almeboda with a spur leading off ro Nattrabyhamn.?
David
--
My website My ebay shop? My Shapeway's shop?
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The upper set of tracks are the 60cm tracks. the track leading out from head to Almeboda with a spur leading off ro Nattrabyhamn.?
David
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I think you could be right. I think that there were 2 60cm stations in Nattraby,? Nattraby itself and Nattrabyhamn. The latter one has caught my interest.? 
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On 09/04/2020 12:49, David Massingham
wrote:
That looks to me
like the standard gauge station.?
There was a 60cm one by the river. Very chocolate boxey as
stations go.?
Looking at this map, it
seems to be a gauge interchange station - note that the two
stations are right next to each other, but there is no physical
connection between any of the lines. Although which one is which
is uncertain.
I suspect the two lines
on the original map (B.K.B. & N.A.?.J.) were different
colours, but this version is in mono!
--
Brian Rumary
England
brian(at)rumary.co.uk
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Hello,
That looks to me like the standard gauge station.?
There was a 60cm one by the river. Very chocolate boxey as stations go.?
David
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On Thu, 9 Apr 2020 at 13:21, David Massingham < ezeebob@...> wrote: Hello,
Does anyone have any idea what the track plan for Nattraby hamn stationen looked like? There was a book on the NAEJ written by Lennart Welander which I would love to look at but it seems particularly hard to get hold of.?
David?
--
My website My ebay shop? My Shapeway's shop?
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Hello,
Does anyone have any idea what the track plan for Nattraby hamn stationen looked like? There was a book on the NAEJ written by Lennart Welander which I would love to look at but it seems particularly hard to get hold of.?
David?
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Something to do in these difficult times - RCL & NGI Competition
Roy has prepared an activity to do in these unprecedented times and we are offering a prize for the best entries:
Keep safe everyone
John
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Re: Narrow Gauge & Industrial Railway Modelling REVIEW
 ? REVIEW 122 has gone to our printers Lavenham Press. They are hoping to continue operations despite the ongoing crisis so hopefully it will still be distributed at the end of the month as usual. The contents are: Hulme End in O17·5 - Part 2?Further Leek & Manifold model excellence in 7mm scale 17.5mm gauge by Paul HolmesEarly Corris Railway Passenger Trains?Research with photos and scale drawing on this 2ft 3ins prototype by Dan QuineA 4-6-0 Hunslet for 'Behind the Front'?4mm scale, 8mm gauge WDLR model loco by Alex Duckworth with prototype photo and 4mm scale drawing by Roy C LinkNorth Wales Narrow Gauge Railway Mystery Coach?Prototype information and scale drawings by Stuart L BakerTan-y-Bwylch Coal Drops?Prototype and 7mm scale model by David JohnMake Your Own Spikes?Roy C Link describes his workshop technique to get neat rail spikesBridport & Charmouth News – Part 5 - Developments at Bridport Town?O16.5 7mm scale 16.5mm gauge model layout by David Taylor
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Re: 7mm NG Association Exhibition 2020 - cancelled
I'm hoping that we all have chance to get some modelling done and we can have a bumper display at Burton in 2021.
Adrian
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Re: 7mm NG Association Exhibition 2020 - cancelled
Thanks Adrian, That is no surprise?and prudent in the circumstances.? Hoping all our narrow gauge modelling friends stay well.?
David
I'm sure it will come as no surprise that the 7mm NGA Exhibition, scheduled for 13th June 2020 at Burton-on-Trent Town Hall has been cancelled, as has the accompanying Annual General Meeting.
The Association's next Exhibition is already booked for Saturday 5th June 2021, at the usual venue, Burton-on-Trent Town Hall.
PLEASE NOTE THAT THIS IS A WEEK EARLIER THAN USUAL.
Regards,
Adrian Gray
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7mm NG Association Exhibition 2020 - cancelled
I'm sure it will come as no surprise that the 7mm NGA Exhibition, scheduled for 13th June 2020 at Burton-on-Trent Town Hall has been cancelled, as has the accompanying Annual General Meeting.
The Association's next Exhibition is already booked for Saturday 5th June 2021, at the usual venue, Burton-on-Trent Town Hall.
PLEASE NOTE THAT THIS IS A WEEK EARLIER THAN USUAL.
Regards,
Adrian Gray
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Adrian Gray