Overseas customers should please e-mail for a price, including
overseas postage and packing and advice on method of payment. Please
provide your address or location with your request.
I can accept indirect credit or debit card payments via PayPal but I
have no facilities for direct credit of debit card payments. More
information on available methods of payment can be found by following this
link, or you may prefer to go directly to the PayPal
page on this site.
Supplies of the industrial solenoids used as a basis for the original Dingham
electromagnet became unavailable some time ago.
It proved impossible to find a direct replacement for the solenoids used for the
original magnet. After much searching a different but
suitable alternative was sourced. The DC resistance of the new magnet, at
8.5 Ohms, is lower than the original magnet (14 Ohms) but still significantly
higher than the 3.7 - 3.8 Ohms of alternative products.
electromagnets are based on industrial-quality solenoids, which are modified
by fitting an extended pole-piece, to reach through the baseboard to the level
of the sleeper tops. The maximum thickness of baseboard that can be accommodated
without recessing underneath is 12.5mm or 1/2in.
DC resistance Dingham
electromagnets is approximately 8.5 Ohms, which is substantially higher than
the 3.7 - 3.8 Ohms of alternative products. This means that
Dingham electromagnets take a current of less than 1.5 Amps on
12 Volts DC. They are therefore much less likely to burn out if misused and
are also less likely to cause switches to burn out.
more detail of the electromagnets, their installation and operation, see Electromagnet
electromagnets are intended only for operation of automatic couplers in
which the moving parts are hinged. These include Dingham, DG, B&B, Sprat &
Winkle. They are not powerful enough to operate 7mm Alex
Jackson couplings which require them to bend a spring steel wire.
[ Back to Top ]