Freerails Home 
Home Search search Menu menu Not logged in - Login | Register
Freerails > Model Railroad Forums > R.C. Control - The Future Now If You Desire > Dr. StrangeLiPo ... or How I Learned To Stop Worrying & Love The Battery !

Because of non-railroad abuse of the site, new members MUST use their first names (at least) to join NO EXCEPTIONS!

Dr. StrangeLiPo ... or How I Learned To Stop Worrying & Love The Battery !
 Moderated by: W C Greene Page:    1  2  3  4  5  6  ...  Next Page Last Page  
New Topic Reply Printer Friendly
 Rating:  Rating
AuthorPost
 Posted: Fri Apr 21st, 2017 12:57 pm
  PMQuoteReply
1st Post
Si.
Super Moderator


Joined: Thu Feb 23rd, 2012
Location: London
Posts: 3785
Status: 
Online
There's this Texan guy Woodie  :cb:  who you might know.

He's been trying to warp my copper-wired D.C. brain for some years now !



His mantra has been spinning around in my head, like rotors on a quadcopter !! :Crazy:

R.C. ... R.C. ... R.C. ... R.C. ...



The $1000 dollar loco I wanted was out of the question, after the rent cheque went out ! :f:

So I had to settle for a $20 buck Model-Power Plymouth instead !!



I stuck my neck out the other day, and said I thought it could be R.C.ed for £15 quid.

Is it possible to put together a HIGH QUALITY system, for the same price as 3-pints of beer ? L:



Could be . . .



Here's the story . . .



:brill:



Si.




____________________

' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
Back To Top

 Posted: Fri Apr 21st, 2017 02:37 pm
  PMQuoteReply
2nd Post
Si.
Super Moderator


Joined: Thu Feb 23rd, 2012
Location: London
Posts: 3785
Status: 
Online



____________________

' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
Back To Top

 Posted: Fri Apr 21st, 2017 03:58 pm
  PMQuoteReply
3rd Post
W C Greene
Super Moderator


Joined: Fri May 4th, 2007
Location: Royse City, Texas USA
Posts: 7560
Status: 
Offline
I keep telling you, I DIDN'T spend mega bucks for either locos or r/c equipment. The stuff I bought has been working now for ALMOST 20 years! Yes, the boards are that old and the Li Po batteries are just about that old. The problems with these batteries going nuclear is because car racers and copter/aircraft modelers may have several models but normally have ONE SET OF BATTERIES and when they start running out of punch, they want to recharge IN A HURRY and that's when the batteries smoke! My old batteries get what amounts to a trickle charge. I have more than one lokie so if the road loco needs water & coal, I have another one all topped up to use. Besides, when I need a charge, I am usually tired of switching for several hours and need a charge myself.

Woodie



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

 Posted: Fri Apr 21st, 2017 05:08 pm
  PMQuoteReply
4th Post
Bob R
Registered


Joined: Thu Nov 20th, 2014
Location: Papillion, Nebraska USA
Posts: 301
Status: 
Offline
Ditto what Woodrow says.  Low cost engines and RC gear always puts a smile on my face.The battery issue is always debated.  
On the DeadRail site there is a current argument going on about use of RC batteries versus "high quality" lipos.   Woodie is correct about our use with low current rate charging etc. 
I also race RC cars and fly RC planes.  Car racers, in order to get the max performance, charge at very high amp rates (frequently in excess of 20 amps). The newer race chargers have the ability to over charge - ie charge to more than 4.2 volts per cell.  They do not care about battery safety or battery life.  Only going fast.
I have never had a battery failure with a small RC train lipo and I buy the cheaper RC cells. Use a decent charger and reasonable precautions and you will wonder what the debates are all about.
Bob



____________________
Bob
Back To Top

 Posted: Fri Apr 21st, 2017 07:29 pm
  PMQuoteReply
5th Post
Si.
Super Moderator


Joined: Thu Feb 23rd, 2012
Location: London
Posts: 3785
Status: 
Online
Hi Guys :wave:


I was going to start off with something completely different ...

... but just so the Thread isn't totally derailed into yet another tedious debate about batteries ...

... here's the principle battery philosophy which I adopted for my project.



BUY THE CHEAPEST DAMN BATTERY YOU CAN ! ... PERIOD !!



So I did !


I got on eBay.

Typed in the simple search term 'LiPo Battery'

Followed by 'Worldwide Listings'

Followed by 'Cheapest First'

& about 2 minutes later, had bought the battery for the project !





The battery I bought, as far as I can tell, is the cheapest LiPo battery available on Planet Earth !

It is a 380mAh bog-standard 3.7 Volt LiPo battery.

The physical size is quoted as 40x20x7mm.

It cost me £1.36p inc. P&P !


End of story on batteries !!


At the moment, that's the subject of batteries DONE & DUSTED for my project.


:P


Si.


Am I worried about it blowing-up, melting-down, catching-fire or giving me nervous-twitches ?

NO I AM NOT !

It's just an ordinary everyday battery, just like TRILLIONS of others !!

:cool:

I did make a mental note of Herbs  :old dude: very sound advice on batteries though ...

... which was ... " Don't stab it with an Exacto-knife, as the goo pours out all over the workbench ! "

Thanks Herb !

I'm gonna be REAL CAREFUL to avoid that !! ;)




____________________

' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
Back To Top

 Posted: Mon Apr 24th, 2017 03:40 am
  PMQuoteReply
6th Post
Si.
Super Moderator


Joined: Thu Feb 23rd, 2012
Location: London
Posts: 3785
Status: 
Online
" I DIDN'T spend mega bucks for either locos or r/c equipment "

" The stuff I bought has been working now for ALMOST 20 years! "

" Yes, the boards are that old and the Li Po batteries are just about that old "


Howdy Woodie :cb:


I have to say, I wouldn't even be trying this project, without your inspiration. :bow:


I'm not 'pennyless', so I could EASILY go out & buy all the usual hi-cost R.C. gear, no problem.

However, as a kid with ZERO $$$, I always took on the challenge, to do what others paid 10x the price for, as a necessity !


Having just celebrated my 50th birthday last week ...

... I now actually ENJOY that challenge, and am always rewarded, when I can 'give the bird' to the jet-set !

I've consistently done this whilst designing & building electronics in vacuum-tubes, scientific-projects & more recently pro-audio.


" WORKS FOR ME ! "  -  Hannibal Smith, The A-Team.


- - - - - - -


" Low cost engines and RC gear always puts a smile on my face."


Hi Bob :wave:


It's nice to have a big smile about these things ! :bg:


Although the Model-Power Plymouth is indeed 'low cost' ...

... the R.C. system I'm putting together is intended to be HIGH QUALITY at 'low cost'.

I believe it would be just as at home in a $1000 dollar loco, as in the Model-Power Plymouth.

I'm just 'breaking the mould' & putting it all together for about £15 quid.


That includes ...

The receiver & electronic speed control.

The power regulator.

The battery.

The battery charger.

&

The transmitter.


So far, I'm on budget as well ... £15 quid ! ... for the ENTIRE high-quality system !! :thumb:

That's inc. delivery P&P by the way. :shocked:


- - - - - - -


:moose:


Si.




____________________

' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
Back To Top

 Posted: Mon Apr 24th, 2017 04:01 pm
  PMQuoteReply
7th Post
Helmut
Registered
 

Joined: Sun Feb 17th, 2013
Location: Friedberg, Germany
Posts: 925
Status: 
Offline
@woodie
The ancient 27MHz are definitely not superior.
First, there ( in Europe ) you have only 25 channels - that is you can run only 25 independent locos at once. For the loner no problem - but in a group? You have to negotiate which channel is run by whom, and the problems arise when your system cannot change channels.
Second, there is a well-known phenomenon called the 'rusty-bolt-effect', that is, any metal part in the line of transmission or in the vicinity, that is not grounded, can act as a secondary source and wipe the signal out. Old devil interference!
You'll be a bit better off in 40,68 MHz where you have some 40+ channels ( albeit not all legal in certain countries )
Third, there is always the dimensional problem. Only if you have the space, a standard RC receiver plus the motor controller will fit in.

@all
2.4 GHz systems can have problems when there are devices around using  Bluetooth.
Cell phones connect to WLAN if you want to go into the internet - which could be a problem when you're in the vicinity of a hotspot.
Normal cellphone frequencies are far off and do no harm.
But all this will only give you trouble when you are not using the full 80 possible channels ( which are available everywhere, AFAIK no limitations )  and some sort of spread-spectrum transmission method. You have to distribute your signal over the whole range in order to get through under all circumstances. You have to determine which channel is open and continously scan for open ones in case your transmission gets blocked.
Such a method is only feasible when using high frequencies and cannot be applied to classical RC frequencies. Sadly enough, there are many primitive single-channel systems sold misleading their customers by boasting '2.4GHz technology' - especially in the China-made RC-toy field.



____________________
Regards, H.
Back To Top

 Posted: Mon Apr 24th, 2017 08:13 pm
  PMQuoteReply
8th Post
Si.
Super Moderator


Joined: Thu Feb 23rd, 2012
Location: London
Posts: 3785
Status: 
Online
In Great Britain, back in the late '70s & early '80s ...
... the 27MHz band generally, was totally RAMMED FULL of garbage, junk & ...



... INTERFERENCE !



The vast majority of which, was NOT caused by people using R.C. equipment ...
... but mostly by illegally operated 27MHz AM C.B. radios !!


Following the release of Sam Peckinpahs worst, but nevertheless CULT movie 'Convoy' ...
... C.B. radios imported from the States, were in great demand !

Many of these were supposedly brought back from the U.S. by 'enthusiasts' ...
... who probably just got back from a 'Freddie Laker' fly-drive holiday 'across the pond'.


The first thing most of these enthusiasts did when they got their new A.M. 'Midland' or 'Motorola' out of their suitcase ...
... was to whack up a whopping great big 18-foot antenna.
And if they possibly could, hook up a 100 Watt, or sometimes even BIGGER, linear-amplifier, or 'BURNER' as they used to call 'em ...
... and it was ...



... " Breaker, Breaker, this is The Duck ! ... do you copy Outer Mongolia ? !! "



Anyway ...
... 30 odd years later ... I had a nose around on the 27MHz band a short while back.

Using a pretty nice ICOM rapid-radio-scanner.
I checked out the entire 27MHz frequency.
Including AM, FM and Sidebands, over the course of a whole day.


Guess what I found on 27MHz these days ?





ABSOLUTELY





NOTHING !





:moose:





Si.





???









____________________

' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
Back To Top

 Posted: Mon Apr 24th, 2017 08:38 pm
  PMQuoteReply
9th Post
W C Greene
Super Moderator


Joined: Fri May 4th, 2007
Location: Royse City, Texas USA
Posts: 7560
Status: 
Offline
Good points Helmut...but I have only 5 lokies now and run "lone wolf" so I only need one loco in operation at one time. I will, however, note that the only interference I had over the years was caused (evidently) by a bad flourescent light at a convention center where the modular club set-up. An N scale club blamed me for interference also but the real culprit was a Lionel layout next to us operated with a digital doo-dah and sound effects, etc. which caused their motorized mice to misbehave.
Well, that's my story and I'm living with it!
BTW-did you see the "wink, wink" in my post?

We'll have fun, fun, fun, till her daddy takes the T Bird away!
Woodie



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

 Posted: Tue Apr 25th, 2017 07:49 am
  PMQuoteReply
10th Post
fallen
Registered
 

Joined: Wed Apr 3rd, 2013
Location: United Kingdom
Posts: 148
Status: 
Offline
I demonstrate my radio control locos at shows and typically have two transmitters on at once. I have not had any problems with interference between the two systems, the way they operate is designed to be interference free so that is what I would expect.

Last December at the Manchester exhibition I was next to the "End of the line" layout which uses radio controlled vehicles. These use the same system as I use for the locos. Again, there were no problems.

I have also had no problems with WiFi systems when the locos are bound to the transmitters beforehand. The only problems I have had (and this is over four years of using radio control pretty well exclusively) is when binding a loco to a transmitter, I have found it does not work too well if close to a WiFi device - in this case, my computer which sits alongside my workbench. Simply moving further away solves the problem and once bound there is no problem at all.

Frank

Back To Top


 Current time is 01:30 pm
Page:    1  2  3  4  5  6  ...  Next Page Last Page  

Freerails > Model Railroad Forums > R.C. Control - The Future Now If You Desire > Dr. StrangeLiPo ... or How I Learned To Stop Worrying & Love The Battery !
Top



UltraBB 1.172 Copyright © 2007-2016 Data 1 Systems