Switches, and defecating in the woods.  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> Switches, and defecating in the woods.
Page: <<   < prev  1 [2]

Login
Message << Older Topic   Newer Topic >>
Switches, and defecating in the woods. - 1/23/2003 10:48:08 PM   
rustyrivet


 

Posts: 599
Joined: 3/13/2002
From: Houston, TX, USA
Status: offline 		Dennis,

LOL. That Kathleen Meyer Author sold 300,000 copies of a book titled "How to sh*t in the Woods"!!??

Stepen,

As Ms.Kathleen Mayor would probably say "When you gotta go, you gotta go!"
More true with us compulsive guys, "When you gotta know, you gotta know" .
Sure nothing wrong with that. As it's minds like yours in the research labs that design and improve stuff for consumers like me who don't know didly squat. We just want to know it works when we put it in our $2,000 rc plane. -Randall

< Message edited by mglavin -- Jan 26 2003 6:07AM >

(in reply to rustyrivet)
       Post #: 26

Ok to"Y" harness together two battery packs? - 1/23/2003 11:11:15 PM   
strato911



Posts: 1479
Joined: 9/17/2002
From: Winnipeg, MB, CANADA
Status: offline 		Ms.Kathleen Meyer's book has resulted in several other authors writing similar books, but I don't think she herself has written a sequel.

Amazon.com lists:
"Up Sh*t Creek: A Collection of Horrifyingly True Wilderness Toilet Misadventures" by Joe Lindsay
"How to Die in the Outdoors: 100 Interesting Ways" by Buck Tilton
"How to Have Sex in the Woods" by Luann Colombo
"Sex in the Outdoors: A Humorous Approach to Recreation" by Robert Rose
"Who Cut the Cheese: A Cultural History of the Fart" by Jim Dawson
"The Gas We Pass: The Story of Farts" by Shinta Cho
"The Zen of Farting" by Reepah Gud Wan
"The Other 'F' Word" by Barry Seltzer
"Beer-Can Chicken: And 74 Other Offbeat Recipes for the Grill" by Steven Raichlen

I'm sure there's many more if you take the time to look for them...


_____________________________

I try to learn from other people's mistakes...
I won't live long enough to make them all myself.

(in reply to rustyrivet)
       Post #: 27

Ok to"Y" harness together two battery packs? - 1/26/2003 7:36:31 AM   
rustyrivet


 

Posts: 599
Joined: 3/13/2002
From: Houston, TX, USA
Status: offline 		Guys,

I just finished hooking up a redundant sysem on my table top for testing. I used a JR switch with charge jack, and a Futaba switch with charge jack. I found no problems with a common ground when connecting my accucycler to either one of the charge jacks, and checking the other switch at the battery leads for current:
When I charged the Futaba side of the system, and tested the battery leads on the JR, their was no voltage or continuity. (Actually, just in case that sounds confusing, it was the battery leads without a battery on it) The same was true when I ran the charger current throught the JR side of the system. The futaba battery leads were dead as a "door nail". (Where did they come up with that phrase anyway?)

So in this case I will have no problems when charging one or both batteries at the same time. Ok now it's time for one of you guys to tell me I checked this improperly, and a problem can still be present. HaHa (Nope. Not this time.)Thanks Again, Randall

(in reply to rustyrivet)
       Post #: 28

Ok to"Y" harness together two battery packs? - 1/26/2003 8:17:32 AM   
rctrax



Posts: 597
Joined: 5/11/2002
From: Mosinee, WI, USA
Status: offline 		I cannot imagine that it would matter if the neg wire is still left connected as long as the pos wire is open from the switch to the rx and therefore also to the other batt, as all switches I know of do. The wire[pos] from the bat to rx is interupted on all swicthes during charge mode. Therefore I see no reason to unplug anything as long as both swicthes are in the off position[At least the one being charged].

(in reply to rustyrivet)
       Post #: 29

Ok to"Y" harness together two battery packs? - 1/26/2003 9:19:15 AM   
strato911



Posts: 1479
Joined: 9/17/2002
From: Winnipeg, MB, CANADA
Status: offline 		rctrax - That is the EXACT problem this thread is based upon. Intelligent chargers seem to use the negative wire to determine the charging status of the battery. If the negative wires are connected together between two batteries while charging both batteries at once , it causes problems. The sollution is to use at least one switch which interrupts BOTH wires (like the JR heavy duty). For more info, check out this thread http://www.rcuniverse.com/forum/tm.asp?m=495569

Randall - That's not quite the kind of testing I meant, but that arrangement should work.

1. Plug both switches into the receiver (no batteries attached)
2. Turn both switches on.
3. With a continuity tester (or ohm-meter), you should see continuity where the batteries would connect beween the two positive wires, and also between the two negatives wires.
4. Turn both switches off.
5. There should no longer be continuity by the battery connections between the two positive wires, nor between the negative wires.

If you see continuity between the two negative wires at step #5, :thumbdown you need to replace one of the switches with one which interrupts both wires..


_____________________________

I try to learn from other people's mistakes...
I won't live long enough to make them all myself.

(in reply to rustyrivet)
       Post #: 30

Ok to"Y" harness together two battery packs? - 1/26/2003 9:40:44 AM   
sfaust



Posts: 1793
Joined: 9/6/2002
From: Boston, MA, USA
Status: offline 		[QUOTE]Originally posted by RandallM.
I used a JR switch with charge jack, and a Futaba switch with charge jack. [/QUOTE]

I know you won't have any problems, since I can guarantee that the JR Charge Switch does indeed have an interrupted ground lead, as that was one of the switches that I tore apart. Not sure about the Futaba HD switch, but I would assume it is also interrupted.

_____________________________

Stephen
http://www.StephenFaust.com/giantscalerc - my hangar, http://www.StephenFaust.com - commercial photography

(in reply to rustyrivet)
       Post #: 31

Ok to"Y" harness together two battery packs? - 1/26/2003 11:00:00 AM   
strato911



Posts: 1479
Joined: 9/17/2002
From: Winnipeg, MB, CANADA
Status: offline 		The specs sound perfect for solving this problem. http://www.rcuniverse.com/forum/tm.asp?m=507612

It's such a new item, it isn't listed on their on-line price-list yet....


_____________________________

I try to learn from other people's mistakes...
I won't live long enough to make them all myself.

(in reply to rustyrivet)
       Post #: 32

Ok to"Y" harness together two battery packs? - 8/14/2003 8:49:48 PM   
twostroker



Posts: 651
Joined: 7/13/2002
From: Ionia, MI, USA
Status: offline 		I was doing research on dual batteries and ran across this thread, very good. Here is my contribution, the first picture is a Standard JR switch, it too has all leads switched. Hope you can see it in the picture, I did not want to destroy the switch ripping it apart.

Attachments
Click to see fullsize image.
Click for fullsize

(in reply to rustyrivet)
       Post #: 33

Ok to"Y" harness together two battery packs? - 8/14/2003 8:56:57 PM   
twostroker



Posts: 651
Joined: 7/13/2002
From: Ionia, MI, USA
Status: offline 		This is a picture of a Hitec Standard switch, it is not switched. You can see the negative lead is soldered to the circuit board.

Attachments
Click to see fullsize image.
Click for fullsize

(in reply to rustyrivet)
       Post #: 34

Ok to"Y" harness together two battery packs? - 8/16/2003 8:09:53 AM   
HardDeck


 

Posts: 136
Joined: 8/7/2003
From: webster, NY,
Status: offline 		Hello all

I have read the entire thread - very informative. I still have one question about dual battery / switches for redundancy vs switch that fails on - such as mpi miracle switch. I want to use 6 volts and NiMh, and I have gotten the impression that a voltage regulator is needed to handle 6+ volts coming off fresh charge. The Mpi miracle switch has the regulator built in. Is this approach with mpi switch as secure as two switch/ battery approach? And if two batteries are used, do I need two voltage regulators? Opinions please?

RJ

(in reply to rustyrivet)
       Post #: 35

Ok to"Y" harness together two battery packs? - 8/19/2003 11:17:30 PM   
Rymorp


 

Posts: 9
Joined: 8/7/2003
From: VA
Status: offline 		I was reading the thread also found this site helpful, hpe it is of some interest [url]www.batterybasicsmadeeasy.com[/url]

(in reply to rustyrivet)
       Post #: 36

Ok to"Y" harness together two battery packs? - 8/20/2003 5:01:17 AM   
strato911



Posts: 1479
Joined: 9/17/2002
From: Winnipeg, MB, CANADA
Status: offline 		Unfortunately, I have only used a 6V system once (without a regulator), so I can't speak from experience. However, my electronics background says you could either use a regulator for each battery pack PRIOR to each switch (2 regulators), or a single regulator AFTER the switches.

The big difference would be that with 2 regulators, you have more connections which could fail, but with one single regulator you have lost the redundancy somewhat.

Perhaps someone with PRACTICAL EXPERIENCE at this can either verify my opinion, or correct any error in my theory.



I have just been reminded that the regulator continues to draw a small amount of current from the battery if placed between the battery and switch, so that configuration is not recommended.

< Message edited by strato911 -- Aug 20 2003 10:06PM >


_____________________________

I try to learn from other people's mistakes...
I won't live long enough to make them all myself.

(in reply to rustyrivet)
       Post #: 37

Ok to"Y" harness together two battery packs? - 8/20/2003 8:54:51 PM   
wiggles



Posts: 277
Joined: 5/19/2002
From: hervey bay, AUSTRALIA
Status: offline 		Interesting thread. Didn't know about the problems charging on a dual system. I will be using two 6 volt batteries with seperate switches, need the speed and power. Futaba can take 6 volts with no problems, but will there be one with the two packs?

(in reply to rustyrivet)
       Post #: 38

Ok to"Y" harness together two battery packs? - 8/20/2003 9:14:01 PM   
strato911



Posts: 1479
Joined: 9/17/2002
From: Winnipeg, MB, CANADA
Status: offline 		If it works fine on one 6.0V pack, it will be equally fine on two. Since they are connected in parallel, it doesn't affect the voltage, only the capacity.

Just make sure at least one of the switches interrupts both positive and negative wires to prevent potential charging problems, as mentioned earlier.