17387Re: auto couplings for O-9
- Feb 13, 2014Martin,
We used the 'n' Kadees (Microtrains) couplings on Roy Link skips on
Tidmeric Minerals 14mm gauge line for many years and had no real
problems. Physically, they are small and look good, but need careful
installation and are not much good coupling/uncoupling on curves. Also
affecting them to some extent was the side play due to wheel back to
backs and axle/bearing slop that could cause a wagon to twist on the
track when propelled. All of this is due to the overhang with short
wheelbase wagons but was not generally an issue. Magnets might be a
problem, electromagnets remove false uncoupling issues but I'm not sure
if they are available in 9mm gauge. Also, the strength of magnets to
uncoupled wagons was an interesting feature to show visitors but
frustrating to operators. Wagons (rake of three) would be drawn to s
msgnet due both to the coupling dropper but also steel axles/wheel
treads. This is minimised by semi permanent rakes/drag springs and
eliminated by not using ferrous metals. Fitting on R.Link chassis is
easy and simply requires a small flat to be made on the centre line to
bring the coupling to the gauge height.
The perfect coupling is not yet in production!
Staines under Thames.
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