It's officially underway... 1986 Mazda RX7 EV project! - Page 5 - Fuelly Forums

Click here to see important news regarding the aCar App

Go Back   Fuelly Forums > Alternative Fuels > Electric and Solar powered
Today's Posts Search Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 11-30-2007, 07:39 PM   #41
Registered Member
 
Join Date: Aug 2007
Posts: 34
Country: United States
Send a message via ICQ to GasSavers_BigMouse Send a message via AIM to GasSavers_BigMouse Send a message via MSN to GasSavers_BigMouse Send a message via Yahoo to GasSavers_BigMouse
I'll eventually install a ceramic heater for heating. I wasn't going to mess with any generators on this car. Haven't had much chance to work on the project in a while, lots of life changes, but the higher gas prices go the more motivated I get ;-)
__________________

GasSavers_BigMouse is offline   Reply With Quote
Old 12-05-2007, 09:54 PM   #42
Registered Member
 
Join Date: Aug 2007
Posts: 34
Country: United States
Send a message via ICQ to GasSavers_BigMouse Send a message via AIM to GasSavers_BigMouse Send a message via MSN to GasSavers_BigMouse Send a message via Yahoo to GasSavers_BigMouse
Quick update...

The project is not dead! I've collected over 130 NiCd cells ranging from 36-42Ah each (1.2v). I hadn't had a chance to work on the project in the last couple months, mostly because of a change in jobs. Left the aviation field for something more profitable, but before leaving, I took full advantage of my flight benefits. Traveled during all my free time, using up all my remaining vacation time as well. Finally starting to get a bit settled in my new job now, so I felt some motivation to get back to work. This evening, I spent most of my time cleaning out some clutter in my garage so I actually COULD work on something. Once that was to a point where to garage was usable again, I grabbed my variac, two block diodes, a 3-prong plug, and some appliance wire. With these items, I started putting together what will be my battery charger. I bought a variac that claims to have a voltage output of 0-140vac with a 120v input, but I can't get any more than 120 out of it. Perhaps I'm doing something wrong, not tapping it right or something. I need to get over 120 if i'm going to charge a 120v battery pack.

anyway, after losses through the rectifier, I'm getting 106-107vdc. Definately need to bump that up unless I want to drop my pack votlage to 90 or so. Which I don't want to do.

Next on the list, make bus-bars for the cells from copper pipe, run the cables, order replacement parts for my motor control (fried what I've got, trying again), make cable ends... the list goes on.
__________________

GasSavers_BigMouse is offline   Reply With Quote
Old 12-11-2007, 03:43 PM   #43
Registered Member
 
Zerodrift's Avatar
 
Join Date: Nov 2007
Posts: 2
Country: United States
Send a message via MSN to Zerodrift
On a side note, Corksport now makes a nice lip for the S4 (86-88) Rx-7's. I have one and its definatly a nice product. I havent tested it, but I do notice better stability at freeway speeds.
Zerodrift is offline   Reply With Quote
Old 01-20-2008, 05:17 PM   #44
Registered Member
 
Join Date: Aug 2007
Posts: 34
Country: United States
Send a message via ICQ to GasSavers_BigMouse Send a message via AIM to GasSavers_BigMouse Send a message via MSN to GasSavers_BigMouse Send a message via Yahoo to GasSavers_BigMouse
worked on the batteries a bit today...

Got my variac wiring figured out and hooked up 78v worth of batteries with aluminum bus bars (probably a bad idea, but copper is so $$$).

Anyway, charging the pack now at 4-5a, water level is coming up on the batts, so that's good. Still trying to decide what to do for a controller, will probably keep messing with making my own until it proves too difficult, then just buy a curtis or something. Next thing to try is the open source one I found on the EV list a while back.

Anyway, just a quick update to keep the thread alive.
GasSavers_BigMouse is offline   Reply With Quote
Old 02-27-2008, 09:06 AM   #45
Supporting Member
 
Join Date: Nov 2007
Posts: 39
Country: United States
THANK YOU for this thread.

I have decided to go the EV route myself and have A LOT of research and reading to do.
jBubb is offline   Reply With Quote
Old 02-27-2008, 06:27 PM   #46
Registered Member
 
Join Date: Aug 2007
Posts: 34
Country: United States
Send a message via ICQ to GasSavers_BigMouse Send a message via AIM to GasSavers_BigMouse Send a message via MSN to GasSavers_BigMouse Send a message via Yahoo to GasSavers_BigMouse
Finally gave up on the home-built motor control. I've got through too many IGBT's and electronic bits, and they're not cheap.
GasSavers_BigMouse is offline   Reply With Quote
Old 04-02-2008, 11:35 AM   #47
Registered Member
 
tom_eberhard's Avatar
 
Join Date: Jul 2006
Posts: 18
Country: United States
Quote:
Originally Posted by BigMouse View Post
Finally gave up on the home-built motor control. I've got through too many IGBT's and electronic bits, and they're not cheap.
Any updates on the project? Hang in there!
Tom.
tom_eberhard is offline   Reply With Quote
Old 04-29-2008, 12:46 PM   #48
Registered Member
 
rgathright's Avatar
 
Join Date: Apr 2008
Posts: 189
Country: United States
Hey Tom, I am new to the boards but not new to EV's.

I really want to see those controller breadboard pics but the link is down. If I can see your design, I may be able to help you refine your problems.

Don't give up!
__________________

rgathright is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
All about acetone in fuel acirrone General Fuel Topics 17 10-11-2008 02:51 AM

» Fuelly Android Apps
Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 06:36 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.