Charger + Dual Cell

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mpbiv
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Charger + Dual Cell

Post by mpbiv »

Well I broke down finally and decided it was dual cell time. I decided to go with the Layman's dual cell mod because I am all about stealth 8-)

The cells came from www.allelectronics.com as a 6 cell pack. I just took it apart and followed the instructions found on another forum, which basically just involved placing it where the old battery resided. Here is the finished product, a dual cell 27mhz MS Pro.
Image

Then of course I wanted my own standalong charger
Image
Its pretty simple and all the wiring is point to point inside. Its powered by 2 AA batteries which I went with based on Namuna's charging posts, and the LED is wired in parallel to help absorb a portion of the large current the akaline batteries are supplying. While the charger is on, the LED is lit.
Image

The LED also functions as a car battery discharger when the switch is in the off position. This is something I had not intended when I put it together, but its good because now batteries can be discharged prroperly after play.

I am thinking about making one revision to the charger, wired in connections for a volt meter to detect peak charges. I will try and get a schematic up in a few days in case anyone wants a simple charger/discharger. In the meantime I have to start checking the current and voltage at the connections so I can figure out how long I should be charging the car. From the short charge it has had so far, I am very excited about this whole dual cell thing :-D :cool:
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Post by CaboWabo »

very nice pimp.
I garuntee you've just opened up a new world of driving now with that dual cell. I like the option of going back to single as well - don't get me wrong... but my dual cells are my blast through brick walls, tuff as nails, kick your grand daddy in his nuts, stunt cars :rockon:
Dear Life Cereal, Where do you get off? Part of a balanced breakfast and delicious? Who do you think you are? By now you may have guessed I'm speaking ironically and have nothing but good things to say about what you do. Life cereal do not change a thing.
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Post by kwikbb »

Sweet dude! Nice and clean... the way i like it.

Can't wait to see that schematic of yours, tell me how did you accidentally create a discharge mode?

Thanks,
-B
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mpbiv
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Post by mpbiv »

Well what happened was I wired up the LED parallel to the charging stand. When the switch is closed (on position), the two akalines supply 3v across the charging stand which charges the battery and lights the 3v LED. When the switch is in the open position, the LED is still wired parallel to the charging stand so when you place a car on it, it lights the LED using the remaining power stored in the cars battery.

Image

Just a simple charger.
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Post by kwikbb »

outstanding! Thanks :-D
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Post by sessiz »

That's the same way my charger acts. When the switch is on off the charger drains the bats. At first I was like WTF :mad: Then I was like :-D but now I feel more like :???: becuase I wanna do the VM thing. 8-)
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Post by MaxximumRC »

i am interested in that dual cell upgrade do you have a link to how to do it, I know how to do the normal one.
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Post by MaxximumRC »

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Post by mpbiv »

http://www.allelectronics.com/cgi-bin/c ... type=store this is the pack that I used. I believe the ones that you are looking at are a little too large.
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Post by mpbiv »

Well I don't think the two teeny little 40mah cells like the current the AA's were trying to shove down their throat. I couldn't seem to get more than a minute or two of runtime before the cells dumped, but they should have run longer considering they have almost as much capacity as the stock cells.

After digging around I found an old DC adapter rated at 3v and 200mah, this should be gentler on the cells. I tried it and the cells still act the same way, it may be that they have been ruined. The good thing is I have 4 more cells here to play with. With this new setup the cells should take about 15mins to charge after doing the math (including a 20% defficieny factor).

Image

And since I am posting pictures I might as well post another of two bodies I am working on.

Image

The red one is airbrushed (finally figured out the right mixture of thinner and paint), the black is stock ms. Both have airbrushed graphics which would have came out better had I not been in a rush. I am still perfecting my technique and learning with every new body. When they are done I might use one as my second entry into the pimped out ride contest, any opinions?
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Post by MaxximumRC »

those look really good, I can not get my airbrush working rite.
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Post by CaboWabo »

mpdiv the jobs on those bodies are the shiat!
awesome, love the black one
Dear Life Cereal, Where do you get off? Part of a balanced breakfast and delicious? Who do you think you are? By now you may have guessed I'm speaking ironically and have nothing but good things to say about what you do. Life cereal do not change a thing.
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cowfish_29
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Post by cowfish_29 »

I'm thinking about getting a couple of those button cells....for that 1 minute is it fast (like a dual cell should be?)

also, very nice bodies! i love rx7s :eek:
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Stoli
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Post by Stoli »

Since a few of you have airbrushes and seem to know a bit about them:

Are those home air brush kits by taimaya and testors worth the 25$?

I know there air can propelled but is there anything around or under $45 USD that works any better? :?:
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Post by MaxximumRC »

I got mine off of ebay for 12 dollars, it is a peice but it work most of the time.
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