[modeleng] Re: Couplings
- From: Peter Sheppard <peter.sheppard@xxxxxxxxxx>
- To: "'modeleng@xxxxxxxxxxxxx'" <modeleng@xxxxxxxxxxxxx>
- Date: Mon, 22 Nov 2004 09:02:53 -0000
We had a case at the Plymouth track with a runaway. Again we were
fortunate that this was an electric loco that derailed at the first curve.
After that incident, as Track Marshall I updated the Risk Assessment (sorry
for swearing) and we brought into use a new rule that stated that
locomotives and driving trucks must be attached by two separate and
independent means. (That is they could share the same buffer beam etc, but
not the same fixing.
The Hunslet I'm building has a centre "pin" type coupling to the driving
truck, but also has a chain connection either side.
With regard to couplings to passenger trucks in more general terms, I
favour the centre pin, with multi-height options for the coupling bar. My
stock is made to the 7.25" guidance (and that where the centre position is)
but not, but not everybody's is!
Cheers
Peter
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Peter Sheppard BSc (Hons) CEng FIEE FIRSE FSaRS
Principal Consultant
Lloyd's Register Rail Limited
5th Floor, 37-39 Corn Street
Bristol BS1 1HT
T: 0117 929 4443
F: 0117 929 4554
M: 07760 167 617
E: peter.sheppard@xxxxxxxxxx
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-----Original Message-----
From: Peter J. Cathcart [SMTP:peter.cathcart@xxxxxxxxxxxxx]
Sent: Saturday, November 20, 2004 6:46 PM
To: modeleng@xxxxxxxxxxxxx
Subject: [modeleng] Re: Couplings
Alan
We use bars, as probably most clubs do. As for pins, we have a set of pins
with a spring semi-circle which is quite vicious if you're not careful. It
means, however, that once the pin is in it simply can't bounce out. This
is
critical. All locos are meant to be checked by the loco super for the day
to make sure the couplings are totally secure.
We have a video taken probably 20 years ago, by pure fluke, of a loco on
the
track with the loco parting from its driving carriage. We play it
occasionally on club nights and it brings tears to the eyes! On the more
serious side it made us realise what can happen and that is why we sorted
suitable pins.
Hilarity is the mother of invention.
Peter
----- Original Message -----
From: "alanjstepney" <alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Saturday, November 20, 2004 6:11 PM
Subject: [modeleng] Couplings
It seems that theree is no universal, or even generally agreed, standard
for
the couplings between loco (tender) and driving trolley, and trolley and
passenger cars.
The most common one that I have seen is the flat bar, with pin dropping in
hole in bar and into brackets fixed to each vehicle.
However, the size of bar and pin seems to vary.
Has anyone any information on couplings?
What does your club use?
What is used in other countries?
alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
www.alanstepney.info
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