I think you need to "isolate," not insulate. Strategically placed bulkheads, along with suitable fans, should keep the battery compartment temperature from becoming excessive.
Something I use in my F7 (not battery-powered) to get rid of engine room heat is a 92mm box fan that has an integral temperature-sensing feature. There is a thermistor that is exposed to the air stream and an internal controller that changes the fan's speed according to temperature. At room temperature, the fan runs slowly and uses very little power. You can get the fan from Digikey Electronics. I also attached the data sheet (PDF) and a pic of one of the fan assemblies from my F7. The right-hand view shows the thermistor.
Here's the data sheet for the fan:
All that said, temperature rise is more a concern with lithium batteries than with lead-acid. I have to wonder if compartmentalizing your batteries and force-air cooling them will accomplish anything of value.
Show us your ET (electric train)
Moderator: Harold_V
Re: Show us your ET (electric train)
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Music isn’t at all difficult. All you gotta do is play the right notes at the right time!
Music isn’t at all difficult. All you gotta do is play the right notes at the right time!
- Atkinson_Railroad
- Posts: 226
- Joined: Mon Jun 08, 2015 6:27 pm
- Location: Michigan
- Contact:
Re: Show us your ET (electric train)
Yes, “isolate” would have been a better word Bill.
And yes, a little blower motor to circulate air would draw very little current on a bank of lead acid batteries.
That’s a useful option to consider if there is even a reason to.
In an effort to stay on message with -Show us your ET (electric train)- I’ll share a partial diagram of our Lima Switcher as my
contribution to this thread. I have always wanted a more detailed diagram of the engine showing all of the actual connections
and have yet to complete the cab portion of the electrical schematic. It’s a challenge to stay up-to-date with everything related
to a railroad at times. This particular drawing in the hands of any savvy electrical person provides a trail to follow instead of
having to dig and trace a problem when electrical issues occur.
Someone has noted, “Where’s the electronics?” Well, there is no electronics. It’s pretty much a very simple Zero or One and that’s it.
It’s purposely drawn on paper because I don’t want anyone to have to rely on electricity to read it.
Keep up the passionate work folks. It is fun to look in once in the while to see what’s going on.
John
And yes, a little blower motor to circulate air would draw very little current on a bank of lead acid batteries.
That’s a useful option to consider if there is even a reason to.
In an effort to stay on message with -Show us your ET (electric train)- I’ll share a partial diagram of our Lima Switcher as my
contribution to this thread. I have always wanted a more detailed diagram of the engine showing all of the actual connections
and have yet to complete the cab portion of the electrical schematic. It’s a challenge to stay up-to-date with everything related
to a railroad at times. This particular drawing in the hands of any savvy electrical person provides a trail to follow instead of
having to dig and trace a problem when electrical issues occur.
Someone has noted, “Where’s the electronics?” Well, there is no electronics. It’s pretty much a very simple Zero or One and that’s it.
It’s purposely drawn on paper because I don’t want anyone to have to rely on electricity to read it.
Keep up the passionate work folks. It is fun to look in once in the while to see what’s going on.
John
Re: Show us your ET (electric train)
Just saw this thread.
Here are my matched 7.25" gauge steeplecab locomotives, driven by four 12v automotive batteries powering salvaged 12/24v tape drive motors.
https://youtu.be/kbLaHU6M_xY
Maybe someone will like them. I do....
Here are my matched 7.25" gauge steeplecab locomotives, driven by four 12v automotive batteries powering salvaged 12/24v tape drive motors.
https://youtu.be/kbLaHU6M_xY
Maybe someone will like them. I do....
- Erskine Tramway
- Posts: 390
- Joined: Wed Sep 10, 2014 4:13 pm
- Location: South Dakota
- Contact:
Re: Show us your ET (electric train)
I just noticed this thread too. Here's 'Sparky', my 7-1/2" gauge tram loco. He's built on a Ride Trains 'Mini Motor Car'' chassis, with a wooden body. One 24 volt motor and two Interstate batteries with chain drive to both axles. Speed control is by a Syren50 controller, with manual control. I charge the batteries with a dual output battery conditioner.
Sparky has a bicycle clasp brake on one wheel, with a Range Rover emergency brake ratchet handle.
Mike
Sparky has a bicycle clasp brake on one wheel, with a Range Rover emergency brake ratchet handle.
Mike
Former Locomotive Engineer and Designer, Sandley Light Railway Equipment Works, Inc. and Riverside & Great Northern Railway 1962-77
BN RR Locomotive Engineer 1977-2014, Retired
BN RR Locomotive Engineer 1977-2014, Retired
Re: Show us your ET (electric train)
"Sparky" is a real dandy. Is that track a home track or a club track?
- Erskine Tramway
- Posts: 390
- Joined: Wed Sep 10, 2014 4:13 pm
- Location: South Dakota
- Contact:
Re: Show us your ET (electric train)
That's my home railroad, the Erskine Tramway. It's 845 feet long, out across the pasture.
Your steeple cabs are very nice too.
Mike
Former Locomotive Engineer and Designer, Sandley Light Railway Equipment Works, Inc. and Riverside & Great Northern Railway 1962-77
BN RR Locomotive Engineer 1977-2014, Retired
BN RR Locomotive Engineer 1977-2014, Retired
- Atkinson_Railroad
- Posts: 226
- Joined: Mon Jun 08, 2015 6:27 pm
- Location: Michigan
- Contact:
Re: Show us your ET (electric train)
Electric trains come to life with lights. Love the lights!
Before LED's, an earlier improvement I most appreciated were the MR-size halogen lamps that became available. (late '80s?)
These lamps provided genuine results from older flashlight reflector arrangements that never really did a very good job
lighting up the right-of-way in front of the engine.
Service record written on underside of the locomotive hood shows the first MR lamp retro-fit was installed on May 9, 1992.
The lamp required replacement on 4-26-2013.
In recalling the lamp failure, I seem to remember the bulb did not fail electrically,
the lamp's structure or housing if you will began "parting" or falling apart.
The number boards and ground lights shown in the cold frosty morning photo are illuminated with traditional 28-volt incandescent miniature lamps
powered by the engine's 18 volt system. Electrical leads for the ground lights are directly soldered to the bulbs.
Over time, socket/bulb arrangements exposed to the environment become poor connection points.
By soldering leads directly to the lamps, it eliminates the issue.
An electric train doesn't have to move to be enjoyed.
Turn the lights on ; )
John
Before LED's, an earlier improvement I most appreciated were the MR-size halogen lamps that became available. (late '80s?)
These lamps provided genuine results from older flashlight reflector arrangements that never really did a very good job
lighting up the right-of-way in front of the engine.
Service record written on underside of the locomotive hood shows the first MR lamp retro-fit was installed on May 9, 1992.
The lamp required replacement on 4-26-2013.
In recalling the lamp failure, I seem to remember the bulb did not fail electrically,
the lamp's structure or housing if you will began "parting" or falling apart.
The number boards and ground lights shown in the cold frosty morning photo are illuminated with traditional 28-volt incandescent miniature lamps
powered by the engine's 18 volt system. Electrical leads for the ground lights are directly soldered to the bulbs.
Over time, socket/bulb arrangements exposed to the environment become poor connection points.
By soldering leads directly to the lamps, it eliminates the issue.
An electric train doesn't have to move to be enjoyed.
Turn the lights on ; )
John