Are you sure 24V is safe ? Yes, at low current, and it could be current
limited. But in that case there's probably not enough current to be a
significant part of running the motor.
On the other hand, if you aren't climbing hills, how much energy to you
need ? Seems a modest battery would give hours of operation.
Peri
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------ Original Message ------
From: "Robert Bruninga via EV" <[email protected]>
To: "Electric Vehicle Discussion List" <[email protected]>
Cc: "Robert Bruninga" <[email protected]>
Sent: 22-Oct-20 2:32:46 PM
Subject: Re: [EVDL] miniature train EV project
Power the rails with a safe 24VAC and use that to keep a constant charge on
the batteries. That should reduce the battery seize requirement by an
order of magnitude.
The charge current is not nearly enough to power the train in real time,
but the train probably spends half its time sitting and loading, and so 8
hours gives plenty of time for operation.]
My rails in my yard are 10" gauge. I initially put bicycle pedals as hand
cranks on the engine. Then when it attracted kids for miles around, I
realized I should never electrify it because the kids would just never go
home. By having to hand crank themselves around the yard, they tire
quickly and go home.
Bob
On Thu, Oct 22, 2020 at 3:01 PM Glenn Brooks via EV <[email protected]>
wrote:
Hello everyone,
Looking for advice and maybe several options for electrifying my 1/4 scale
antique park gauge miniature locomotive.
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These are 12? gauge locos, approx 8? long, 26? wide and weigh around 1000#
fully equipped with power train, trucks (frames that hold axles and
wheels).
Traditionally these locos were powered with 4 cylinder gas motors and
small reduction gears connected with shafts to each truck, and could pull
4-5 passenger cars with a total weight of around 6,000-8,000 pounds, at a
max speed of 10 MPH.
I would like to replace the gas engine with one or two, used, 5 Kw
smallish 24volt, series wound forklift motors. One per truck.
However, so far, haven?t been able to determine what the amp hour draw
might be for these size motors, or what kind of battery pack would allow
6-8 hours operation.
Anybody have any experience with these size motors?
Or alternatively, any suggestions as to what might be a reasonable, DYI
conversion?
Thanks much, for any information, or ideas, you might be able to offer.
Regards,
Glenn B.
Sent from my iPad
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