Freerails Home 
Home Search search Menu menu Not logged in - Login | Register

Freerails IS ACCEPTING new Members ... To join Freerails ... See how to Register as a Member in the 'Joining Freerails' Forum

Running Times
 Moderated by: . Page:  First Page Previous Page  1  2  3  4  5  6  Next Page Last Page  
New Topic Reply Printer Friendly
 Rating:  Rating
AuthorPost
 Posted: Wed Nov 14th, 2018 06:40 pm
  PMQuoteReply
21st Post
Rod Hutchinson
Registered


Joined: Fri May 8th, 2009
Location: Mooroolbark, Australia
Posts: 476
Status: 
Offline
Bob,

For many, me included, changing the motor is challenging.  

Voltage converters, and 2S & 3S battery configurations are being explored as an alternative.





____________________
Rod Hutchinson
Mooroolbark, Australia
Back To Top

 Posted: Fri Nov 16th, 2018 07:08 pm
  PMQuoteReply
22nd Post
Rick Dow
Registered


Joined: Wed Nov 1st, 2017
Location: Ontario Canada
Posts: 130
Status: 
Offline
Rod,

I will say that I am very pleased with the operation of the three locomotives that I have powered by 2 cell lipo batteries and no voltage converters.  

I have them wired so that I can pop the top off the tender and pull out the battery and easily unhook it for remote charging while I'm watching tv. 
I can easily charge all three in under an hour.

I'm a relative newbie compared the other guys on here.  
They have been a marvellous help to me.

I'm modelling old time stuff and am running relatively short trains. 
But there is adequate power to pull seven cars up a 3% grade.

Rick




____________________
When you come to a fork in the road - take it.... Yogi Berra
Back To Top

 Posted: Fri Nov 16th, 2018 08:39 pm
  PMQuoteReply
23rd Post
Rod Hutchinson
Registered


Joined: Fri May 8th, 2009
Location: Mooroolbark, Australia
Posts: 476
Status: 
Offline
Hi Rick. 

I presume you are running a 2S configuration to provide 7.4 volts and charge your batteries a single cell at a time.







____________________
Rod Hutchinson
Mooroolbark, Australia
Back To Top

 Posted: Sat Nov 17th, 2018 03:37 am
  PMQuoteReply
24th Post
Rick Dow
Registered


Joined: Wed Nov 1st, 2017
Location: Ontario Canada
Posts: 130
Status: 
Offline
Hi Rod,

Yes, two cell Lipo battery and 7.4 volts. So far these DC motors perform like troopers on that much power. 

At the hobby store, I choose the shape of the 2 cell lipo batteries that I predict will fit most easily into my tenders. 
Obviously the larger the tender the easier the installation.

Regarding Charging:   Well, I bought a charger that charges both cells at the same time by "balancing" them as it goes along. 

If you google  HiTEC X1 MINI  you will find the exact charger than I am using. 
It's easy to use. 

You read the manual first and when that totally confuses you, you join the club. 
But then you will finally figure it out. 

First, you choose the number of cells (from one to six) in the battery that you're charging (in our case TWO CELL) 
and then you also choose the Amp charging rate (I always take my time and charge at 1 amp). 
It still doesn't take very long.

When fully charged it will automatically stop charging. 

You can also push another button at any time, which will indicate to you the level of charge inside the battery (this percentage will get higher as it charges) 
and finally, you can push a button and it will show you the two cells beside each other and how they're balancing themselves as they charge. 

All in all, pretty simple and pretty cool.

Rick



____________________
When you come to a fork in the road - take it.... Yogi Berra
Back To Top

 Posted: Fri Nov 23rd, 2018 03:57 pm
  PMQuoteReply
25th Post
dan3192
Registered
 

Joined: Thu Oct 14th, 2010
Location: Connecticut USA
Posts: 228
Status: 
Offline
Rick,

I assume your 2S Lipo has two power wires and three balance wires. 

Do you know if your Hitec charger can slow charge batteries using only the balance wires?

Dan 


Back To Top

 Posted: Sat Nov 24th, 2018 07:20 am
  PMQuoteReply
26th Post
davecttr
Registered
 

Joined: Sat Nov 9th, 2013
Location: United Kingdom
Posts: 491
Status: 
Offline
My 2 main chargers are a E-flite Celectra that has 4 independent charging circuits with E-flite style UM sockets for the 1S batteries I use. 

My latest charger is a Turnigy P403 as mentioned by David Theunissen here. 
It charges lipos of 2s to 4S. 

For my single cell batteries I made up a pair of harnesses with sockets for the batteries.
Plug them in and you have a '2S battery pack' that the charger balance charges.




____________________
Dave
Back To Top

 Posted: Sat Nov 24th, 2018 11:48 am
  PMQuoteReply
27th Post
Rick Dow
Registered


Joined: Wed Nov 1st, 2017
Location: Ontario Canada
Posts: 130
Status: 
Offline
Dan,

Was away for a day. 
Sorry to take this long to reply.

My 2 cell Lipo batteries have a single (three wire) connector set of wires, extending from the battery itself, into a single connector.    
I assume that the middle wire is the balancing wire.    
My charger has a connecting harness wire, that matches and attaches to the connector of this three wire set, coming off the 2 cell Lipo battery.  

Then I simply (by my own choice) set the charger to 1 Amp Charging. 
Then I hit Power.    
I assume 1 Amp Charging (the lowest setting) is "Slow Charging".

In my 2 cell situation, it is also "Balance Charging".

Rick



____________________
When you come to a fork in the road - take it.... Yogi Berra
Back To Top

 Posted: Sat Nov 24th, 2018 03:56 pm
  PMQuoteReply
28th Post
W C Greene
Moderator


Joined: Fri May 4th, 2007
Location: Royse City, Texas USA
Posts: 8108
Status: 
Offline
I have the "luxury" of operating what amounts to "On30 locos on steroids"-1:35n2. 
I have a couple of Shays, Porters, a 2-4-4-2, and a gas/mechanical 2 trucker-all powered with 2 cell, 7.4volt Li Pos. 
These batteries are around 10 years old and a couple in the Shays are now probably 15. 
I have an older Venom charger which works fine and I charge the batteries at around 1 amp. 
Over the years, I have seen comments about Li Pos exploding and burning up expensive copters, airplanes, cars, etc...
But remember that those modelers want to get back in the air or race QUICKLY and that's when they "pay the piper"...

My experience dictates that I use the largest batteries that I can fit into the locos, I get long run times and have no problems. 
But as they say here in Texas, I guess that I "hold my mouth right!"

Woodie



____________________
It doesn't matter if you win or lose, its' how you rig the game.
Back To Top

 Posted: Sat Nov 24th, 2018 06:29 pm
  PMQuoteReply
29th Post
dan3192
Registered
 

Joined: Thu Oct 14th, 2010
Location: Connecticut USA
Posts: 228
Status: 
Offline
Rick,

That's interesting. 
So you have a 2S with just 3 wires and no heavy red and black power leads. 
I was curious because I plan to use the 2S shown below, 
and I was thinking I could use the small red and black leads for power and forget the heavier wires. 
They look like they are 24 Ga.

Reason is, the battery fits nicely in the tender of my Broadway Limited 4-6-4, 
and when I measured its maximum power requirement (wheels slipping) it was 155mA at 10.5V. 
This would simplify wiring a lot.

I have a fancy Solo 80 Lipo charger, but I don't see anything in the instructions about slow charging via balance wiring. 
I know it can be done, probably is, and you seem to be doing it. 
So maybe I'll need a Hitec as well, or just try it on my Solo.

Thanks for the information.

Dan






Back To Top

 Posted: Sat Nov 24th, 2018 06:47 pm
  PMQuoteReply
30th Post
Rick Dow
Registered


Joined: Wed Nov 1st, 2017
Location: Ontario Canada
Posts: 130
Status: 
Offline
Dan, 

Wish I knew how to upload a photo on this site.

If I did, I would send you a photo of my 2 cell Lipo battery with only the small wires and no additional larger wires,
plus I'd snap a photo of it hooked it up to my Hi Tek Charger.

Don't know it there is a private message site on here (I'm no high tech genius) 
because if there is you could send me an email address to upload a series of I-Phone Photos.

All the best.

Rick




____________________
When you come to a fork in the road - take it.... Yogi Berra
Back To Top


 Current time is 11:45 am
Page:  First Page Previous Page  1  2  3  4  5  6  Next Page Last Page  

Top



UltraBB 1.172 Copyright © 2007-2016 Data 1 Systems