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 Posted: Sun Apr 23rd, 2017 03:56 am
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Michael M
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Finally finished with the R/C installation on my 35n2 critter.  The circuit board was too big to squeeze in so I had to make a few modifications (note to self: next time must use smaller donor R/C car).  Had to cut a slot on the back end to accommodate part of the circuit board, and make an access hatch to the on-off switch and recharging plug.

In the first photo you can see the 'hump' that was added to cover a slot that was cut to fit the circuit board inside.  You can also see the access hatch.



The second photo shows the access hatch open.








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Michael
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Nye, Inyo & Esmeralda Railroad
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 Posted: Sun Apr 23rd, 2017 05:10 pm
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Helmut
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@Si
re the Triang advertisement photo you posted -wasn't the caption something like:
( boy in the red jumper)" Dad, see that bogie derailed just on the points - how do we get there?" ( Second boy) " Now that they're at it, I'll back that train further and watch their faces when it goes down!"

Last edited on Sun Apr 23rd, 2017 05:10 pm by Helmut



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 Posted: Mon Apr 24th, 2017 02:34 am
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Si.
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Hi Helmut :wave:


Te He Hee :P


The distribution of rolling-stock on that layout...

...makes John Allens 'Timesaver' look like a walk in the park !! :shocked:


It reminds me of those 100-square plastic tile puzzles...

...where 1-square is missing & you have to move the numbered tiles into the correct order !! :Crazy:


- - - - - - -


I have to say, I was of course joking a bit in response to Stephens Post.

My Dad made me a Tri-ang layout, when I was a kid.

He wasn't & never has been a railway modeller ever & had ZERO experience.


The layout was built in 2 large bay-windows, with a connecting 'L' section.

It had 2 long continuous run loops & perhaps around 16 switches.

The wiring was 'basic' to say the least.

I don't think the 2nd bay window even had a power-feed !


The hot sun came streaming in through the glass, baking that layout for years.

It was never cleaned properly, & was well before 'Relcos' ...

... but worked FLAWLESSLY for it's entire 6-year lifespan !!


Makes me wonder if all the talk around here of DISASTER without BPRC...

...is a tad over the top ! L:


Just ran one of the ol' Tri-ang cars, with the 'meths-sponge' on the bottom, once a week maybe.





That simple.

Never picked up a single wire or soldering-iron, the entire time I had it.


:moose:


Si.


Anyway ... I'm RCing a train now ... So don't worry ... I'm going with the 'in-crowd' ! ;)




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 Posted: Sun Jun 4th, 2017 06:26 pm
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Michael M
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Do Li-Po batteries lose a charge over time?  Haven't run my RC critter for a month or two and it seems that the battery was drained.  I'm charging it now and it seems okay.  Would it harm Li-Po batteries if you just left them connected to the charger until your ready to run the loco?



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Michael
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 Posted: Sun Jun 4th, 2017 06:48 pm
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davecttr
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I read that they will lose about 1% of the charge per month. Did you leave anything switched on?

I nearly got caught out on that one as my Pololu voltage regulators use a few milliamps even when idle. Remember to put the on/off switch between the regulator and the battery!



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 Posted: Sun Jun 4th, 2017 07:05 pm
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Bill Fornshell
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Hi,

The RC guy where I buy my batteries told me to dis-connect (unplug) the battery when I am not using it.

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 Posted: Sun Jun 4th, 2017 07:30 pm
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Michael M
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I've got an on/off switch installed so that I don't have to 'unplug' anything.  Maybe I just need to operate my little railroad more often?



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Michael
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 Posted: Mon Jun 5th, 2017 03:07 am
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Michael M
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The batteries just don't seem to be charging.  I've got two 3.7 volt Li-Po batteries wired in series.  I'm using a 3.7 volt charger.  Do I need to step it up to a 7.4 volt Li-Po charger?

Last edited on Mon Jun 5th, 2017 03:10 am by Michael M



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Michael
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 Posted: Mon Jun 5th, 2017 07:26 am
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davecttr
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Is the charger one that can charge 2 batteries in series?. If it can it should have 3 wires connecting to the battery pack, it then alternately charges each battery to the maximum of 4.2V.
My 7.4V lipo packs are made up of separate cells which unplug from the pack. This means I can use the same single cells for 3.7V, 7.4V or 11.1V. They all charge individually in my 4 cell charger or my two USB chargers.
Thinks, if your charger is designed to charge single cells it will only charge to 4.2V, or 2.1V per cell if you are charging 2 cells ???



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 Posted: Mon Jun 5th, 2017 02:26 pm
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Michael M
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davecttr,

No, my charger can only charge single cell 3.7 volt.  If I understand you correctly you have two 3.7v cells wired in series. BUT, each cell is changed individually?  So, if I'm trying to change two 3.7v Li-Po batteries in series they are only getting a couple of volts which is probably not enough to get my little critter to move.

Gonna have to take it apart and see what I can do. 

I have a couple of voltage boosters (somewhere) and I was thinking of removing one cell and installing the booster to get a higher voltage.



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Michael
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