eBell question

izzwardo
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Joined: Sun Oct 05, 2014 9:02 am

eBell question

Postby izzwardo » Tue Mar 13, 2018 1:33 am

I am trying to hook up my ebell on my truck and I got the DCDC 12v input to 48v output converter and I can only get a small partial ding out of it but if I connect it next to my battery it works fine with the converter. When I try to wire it so that the bell is in the back of my truck about 8 feet away then it only makes a small sound and that’s it. What am I doing wrong? I believe I am using 14 gauge wire should I be using larger? Seems like everyone else that I’ve seen seem to not have any problems with their setup.

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the former deafrn
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Location: Iowa. Currently the lumpy part.

Re: eBell question

Postby the former deafrn » Wed Mar 14, 2018 10:44 pm

Not sure what is going on with your power issues/converter location, but all the "factory" leads running to E-bells which I have actually examined up close have been of 18 AWG tinned, stranded copper hook-up wire. I'm not up on my "wire cryptology," but the attached photo shows a typical example of what is printed on the insulation of a good number of leads crimped into the pins on the bayonet-style connectors.

tfd

e-bell wire.JPG
the former deafrn
"It was considered junk at the time."

"Every now and then, in those days, the boys would tell me I ought to get one Jim Blaine to tell me the stirring story of his grandfather's old air horn-"

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railgeek
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Re: eBell question

Postby railgeek » Wed Mar 14, 2018 11:58 pm

Your 12V DC converter might not be giving the e-bell enough amps.
-Reed S
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izzwardo
Posts: 199
Joined: Sun Oct 05, 2014 9:02 am

Re: eBell question

Postby izzwardo » Thu Mar 15, 2018 11:26 pm

Thanks for the response. I ended up running larger wire and doing a better job wiring it and it works great now!

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the former deafrn
Posts: 27
Joined: Sun Sep 18, 2016 3:52 pm
Location: Iowa. Currently the lumpy part.

Re: eBell question

Postby the former deafrn » Sat Mar 17, 2018 9:01 am

All's well that ends well.

FWIW regarding the length of the wiring: if you ever get to see a new replacement e-bell "harness" from EMD for an e-bell that has the circular bayonet connector , you'll find a surprising amount of cable inside that sealed bag. It would be a flippin' long run a that would require more.

Should anyone want to recreate prototypical wiring for e-bells, EMD and General Electric seem to have done things a bit differently. Both use stranded copper 16 or 18 AWG leads, but EMD applications generally have them jacketed ("two-conductor cable"), while GETS generally runs them inside a flexible polymer conduit. Another difference is that on the e-bells which use a circular bayonet-type electrical connector, EMD tended to use an ITT/Cannon straight plug with a strain clamp for the cable, while GETS used - or at least did - an AB Connectors 90-degree plug with threads for a conduit fitting. Either connector will work, but they differ in details. Anyway, these have been my observations on as-built locomotives... retrofits can be all over the place.

It is a lot cheaper and easier to just hard-wire an e-bell - which can be done on e-bells with the circular connectors as well as the ones that were made for a hard-wired connection - than it is to make up a connector/leads assembly from scratch, but if a person has access to the right crimping tool and a friendly source for the connectors themselves, it isn't anything monumental. Whenever possible, save time and money and try and get the factory circular bayonet-type connector and leads assembly even if it has been cut off short... a person can always add more wire.

(ETA: Graham-White sells an e-bell "harness" with the cable and circular connector ready to go.)

tfd
the former deafrn
"It was considered junk at the time."

"Every now and then, in those days, the boys would tell me I ought to get one Jim Blaine to tell me the stirring story of his grandfather's old air horn-"


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