Re: [914ev] Digest for 914ev@googlegroups.com - 1 Message in 1 Topic

[Paul Jorgensen]

1. Although

Paul Jorgensen

443 995 1071

On Dec 18, 2012, at 4:30 AM, 91...@googlegroups.com wrote:

  Today's Topic Summary

Group: http://groups.google.com/group/914ev/topics

• Updating Porsche 914, converted by previous owner [1 Update]

 Updating Porsche 914, converted by previous owner

creegster <cree...@gmail.com> Dec 17 07:16PM -0800  

Hi,
I have a Porsche 914 that had been converted already by the previous owner.
this is my first post about it!
 
It has lead batteries that are no good and need to be replaced (knew that
when I bought it).
 
I am of course considering Lithium-ion for the weight savings, but am a bit
leery of the higher cost.
 
Here are some details:
I am fairly mechanically inclined. I can handle light body work and
medium-level mechanical work. Ironically, I am less skilled at electrical
work (lower to mid-level), but want to learn and am looking forward to the
challenge. I definitely need help figuring out the "tricks" of wiring and
understanding overall electrical theory; reading up on it.
Range: hoping to get 20 miles out of a charge. My commute is 2.7 miles each
way, flat, in Los Angeles (so typically some traffic). I ride my bicycle
often, but would like an EV backup- otherwise, I have to take the ICE when
it rains.
 
Some other specs:
 
- DC
- Charger: Nivan NG3
- IGBT 900A controller with 172v
- DC/DC Converter: DCP
- 144v system currently
- The motor seem to be an ADC-FB1-4001 9''.
http://www.kta-ev.com/AMD_Motor_FB1_4001A_28_5HP_p/amd-fb1-4001a.htm
(please correct me if this is wrong)

I have a thread going on this forum, which has been helpful
http://www.diyelectriccar.com/forums/showthread.php?p=336014#post336014
 
I have 2 identical controllers, in case you are wondering why its out of
the car in the pictures.
 
I look forward to working on this, with advice and guidance from those more
skilled and knowledgeable than me.
 
Thank you in advance for your help.
 
Craig
 
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[Mark Brems]

Sad to see it sitting idle among the weeds in the pix.
It's great that it will be getting some love.

Mark

PS - There may be something here that may help along the way:
914electric.wordpress.com

[creegster]

Thanks Mark-

I can see that I am going to end up reading that blog all the way through, its got some great stuff!

My car is now snug in my garage, its not in the weeds anymore. Now begins the clean-up...

Thanks

Craig

[Richard Rodriguez]

Craig,

Make sure the car you have is structurally sound.  Look behind the passenger seat where the floor pan and the fire wall meet for rust.

Also look at the Longitudinal support on the passenger side.  You need to remove the running board on the passenger side to get a good look.

If the longitudinal is rusted through you are looking at some expensive repairs and the car might not be worth moving forward with.  Have someone jump up and down on the rear bumper while you look at the gap between the passenger door and the body of the car.  If you can see the gap flexing, you are in trouble.

Ask me how I know. 

My project consists of 2 cars converted into one

Richard

 

For more information see:

EV Album 3517.

Richard's-914 EV Blues blog

EVTV July 22,2011 video posting

EVTV August 3rd, 2012 follow-up video posting

I'm up to 22,750 EV miles in two years.  Living BMS free one day at a time.  No cell drift. 

I check my LiFePho 200Ah voltronics batteries once a month or so and also check all my connections.

BUT I have not needed to re-balance my batteries.

 

Good Luck

 

To view this discussion on the web visit https://groups.google.com/d/msg/914ev/-/O2I8brZK6PAJ.

[Peter Thompson]

Now that it is in the garage is THE time to do major cleanup - make sure the 12v system is working perfectly, remove/paint all the rust, update all the bearings (if they have never been replaced, this is a good time to do so), and then make sure all your creature comforts are taken care of - radio, heat, fan, etc.

Cheers!   Peter

To view this discussion on the web visit https://groups.google.com/d/msg/914ev/-/O2I8brZK6PAJ.

[creegster]

Thanks Guys-

I am in the process of checking structural integrity, cleaning it, and testing the 12V and battery system (the headlights pop up and turn on, I tested them!). I am also drawing a schematic of the electrical system, as I am sure I am going to need to troubleshoot it.

Question:

Do you think it will be possible to store small amount of charge in the very old lead batteries so I can confirm that the system works (I just want to see the drive wheels turn while it is on jackstands)? I dont need to even move the car, just confirm that its all hooked up.

The Pb batteries in there are at least 5 years old, so dont know if that will even work.

Thanks everyone

Craig

[Peter Thompson]

I don't see why you couldn't store enough in the batteries to at least check the drive systems out.  Don't expect too much power to come out tho.  :)

Cheers, Peter

To view this discussion on the web visit https://groups.google.com/d/msg/914ev/-/S1k7m6MTCFAJ.