Hi Robert, Sorry to hear about your controller. Are you going to try and resurrect it? I am not sure which of your projects this is, your website has several that might qualify ;-)
Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: [email protected] Private: http://www.cvandewater.info Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626 Tel: +91 (040)23117400 x203 -----Original Message----- From: EV on behalf of Robert Bruninga via EV Sent: Mon 7/6/2015 6:51 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] Polarity Reversal (duh) 12 hours and counting till the wife returns... > And we wont know till later tonight how I get the 3000 lb car up the hill to its hiding place. Well, got home, checked what I had and yes the controller is toast. So... I slowly remembered why I started this project. It is to be my retimement car for the rest of my life. And I dont want to be dependent on no stinkin' dealers or computers... Thats why I like a DC conversion. A motor with 2 terminals. A battery with 2 terminals and a controller in the middle with 4, two for the string of 12v batteries and two for the motor. Well, actually it is three. The controller has a common terminal for one of the battery and one motor lead... Hummh..... So... i have a good motor, and I have lots of good batteires (10 12volts)...... So all I gotta do is take a battery cable and jumper the other motor termial over to the battery! Called my son, put him in the driver seat to work the steering wheel and the brakes and I sat in the passenger seat with the battery cables going out the window and under the hood hooked to the Flux Capacitor and 1.2 Ghigga Watts... er... well battery. Lots of sparks and up the hill we flew! Well, that's the Hollywood version. Actually, I hooked the battery jumper cables only one battery down in the string from that common terminal so that I was only jumpering 12v to the drive motor. And we didn't fly, we more or less crawled like lava up the hill in 1st gear while the cheap K mart jumper cables did a nice slow melt. And it was not so much a hill as in fact it was only 100 feet to the second house over in the culdesac and up a small inclined driveway of the abandoned (foreclosed) house and in fact we both had to get out and push the last 10 feet while the cables did their slow burn. So its back where it has been sitting for a year until the next chance I get to work on it. Too bad... though... it was basically running the last time i tried it months ago before this little adventure... just needed several things like any 20 year old car needs to get through safety inspection... Now to clean up the kitchen, make the bed and go pick her up at the airport tomorow morning in the salvage Prius... (it ALWAYS works)... Bob, Wb4APR On Mon, Jul 6, 2015 at 12:35 PM, Robert Bruninga <[email protected]> wrote: > Sharing my mistakes so others can avoid them. > > > > Wife was outta town so I hauled over the Honda Civic DC conversion project > to the driveway. Didn't really have time to mess with it (day job bekons > 12,14, 16 hrs a day and all that). > > > > So I plugged in the charger (hasn't been plugged in in 6 months). Was > gonna keep an eye on it and forgot. Got to work, remembered, and 2 hours > lateer got home to a melted extension cord. (At least now I will be more > tolerant when the wife insists on going back home because she may have > forgotten the iron). > > > > So then I switched to a conventional charger to top off the 12v accessory > battery. It was completely dead. > > > > Came home (again around 10PM) and all looked ok. Battery was fully > charged. > > > > This morning (realizing wife is coming home tomorrow), its time to move > the bucket of bolts back to its hiding place (which is up hill). Turned it > on and the only thing that worked was the Windshield Wipers (going > backwards). and lights. Hummh. > > > > Darned if I did not charge the 12v battry BACKWARDS. Why did I do that? > Well, the battery has a big round RED dot sticker (to show the date of > purchase) and it is stuck on the battery right next to the negative > terminal. > > > > And now you know the rest of the story. well, except that the controller > and everything else electronic in the car is probably shot. And we wont > know till later tonight how I get the 3000 lb car up the hill to its hiding > place. > > > > Don't do this at home. > > > > But you ask, "But modern battery chargers will not charge a dead or > reversed battery". No, so I paralleled it with a jump-start battery to get > it started. (Lead Acid batteries have the same LEAD on both the positive > and negative terminals. The polarity is deermined by how you charge it!) > > > > The windshield wipers comment was a trick question just to see if you were > paying attention. > > Bob > > > > > > > -------------- next part -------------- An HTML attachment was scrubbed... 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