electric locos

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Si
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electric locos

Postby Si » Tue Aug 12, 2014 1:05 pm

Viewing Chris' nice new little bat loco (http://www.minimumgauge.info/viewtopic.php?t=9948) a question occurred to me.

I want to build an electric loco with a pantograph do-dah on the roof. But my layout won't have overhead power cables. So, were there ever minimum gauge locos that ran off both pantographs and batteries, such that they would switch over to battery when the overhead cabling came to an end?

Or would it have been feasible for someone to get hold of a pantograph loco and convert it to battery, leaving the redundant pantograph in place on the roof?

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chris stockdale
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Postby chris stockdale » Tue Aug 12, 2014 4:28 pm

First thought.

It's your line, so the 'history' is whatever pleases you.

Second thought.

Hythe pier railway kind of did the opposite. The locos started as battery but were converted to third rail electric.

I don't think what you suggest is too unrealistic. The key quirk or feature might be to have an 'add on' chunk to the loco as they would have to have made space for batteries that wouldn't have fitted in the original design.

Cheers,

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chris69
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Postby chris69 » Tue Aug 12, 2014 6:08 pm

Well, some electrics actually had a drop cord on board. This was carried on a spool and in the loading or unloading area the cord was clipped to the end of the overhead.

Can't find the prototype picture but here is one of mine where i modeled this contraption.

Image

As you can see, there was a set of roller that the cable could run free in every direction.
When I find the prototype picture ,I'll post it.
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Jon Randall
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Postby Jon Randall » Tue Aug 12, 2014 7:42 pm

IIRC there was a discussion years ago on the here about some battery locos which had pantographs which were used to recharge the batteries rather than cables. This was probably to stop problems with cables and connections.
Jon Randall

Needs to stop procrastinating and start modelling

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csundstr
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Postby csundstr » Wed Aug 13, 2014 1:10 am

Certainly there were dual battery and overhead locomotives. They are still offered today:

http://claytonequipment.co.uk/locomotives/trolley/

Sometimes you need the versatility to run into undeveloped or temporary trackage, but the efficiency and power of overhead wires for normal operations.

Chris

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chris69
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Postby chris69 » Wed Aug 13, 2014 1:23 am

Here is a picture of a 1:10 scale Trolley/drop cord one and some prototypes in action.

Image

Image

Image
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Si
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Postby Si » Wed Aug 13, 2014 2:22 pm

Thanks all, looks like my idea won't be too far fetched then!

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adamc
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Postby adamc » Wed Aug 13, 2014 8:58 pm

Here are a couple for you as well

https://www.youtube.com/watch?v=WEpeQiKOjfs

0:50 and 6:30


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