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  #121  
Old 03-27-2012, 01:40 PM
somanywelps somanywelps is offline
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

Quote:
Originally Posted by attaman View Post
lot of work is not a problem... how do you reverse engineer the ECU source code?

I don't think you can get away with only "cam and or crank" signals, there are a bunch of sensors/wires going from the ICE into ECU. Wrong signal on any of them should trigger an error (otherwise it's useless and wouldn't be there). And all those signals depend on each other in some non trivial ways and define the working engine regime... all kind of pressures, temperatures, RPMs etc...

You either need to mimic all of them, or completely rewrite the code which will not care about them... mimicing with the black box sounds more realistic...

In our E46 dashboard only the speedometer and odometer work, everything else is in a "christmas tree" mode, all possible lights are on.

ABS - not sure, probably it's a completely standalone system, but haven't tested yet )
What? I know the tach has a mech mode so that's easy; I thought valerun said you had warning light suppression.

Try posting in that diagnostic subforum I linked.

You can also try the engine swaps because they're tooling around with the instrumentation too for their LSx engines.
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  #122  
Old 03-29-2012, 09:30 PM
somanywelps somanywelps is offline
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

What is with the swimming effect on the longer video?

Also how many 100Ah cells are in that top battery box? (22?)
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  #123  
Old 03-30-2012, 04:37 AM
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Thaniel Thaniel is offline
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

Some of the information I have is from this post that had an ICE swap (man after my own heart)
http://forums.bimmerforums.com/forum...9&postcount=29

and

http://forums.bimmerforums.com/forum...6&postcount=32

Also comunicated with another EV'er that did an e46. In the E46 EV he just removed the ECU and claimed that the HVAC and other things still worked and were controlled out of the instrument cluster (he never did get the tach to work though). But that goes against what the E46 LS1 project said which claimed many systems didn't work without the ECU. SO i've read many conflicting messages. Could be some variation from year to year?

It may be that I won't know until I do my own swap. Plan to turn my E36 EV into and E46 EV when I get back to the USA this fall (currently in Sweden). But any info I can gather beforehand is good stuff.
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  #124  
Old 05-24-2012, 01:15 AM
valerun valerun is offline
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

busy busy busy times.

Second prototype completed with accessories.

First test drives at Google's Earth Day event last month

Huge Maker Faire event this past weekend - 2,000-4,000 people stopped by.

We made Engadget: http://www.engadget.com/2012/05/22/e...r-faire-video/

Gearing up to public conversions / kit sales this quarter.

Valery
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  #125  
Old 05-24-2012, 11:33 AM
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

Quote:
Originally Posted by valerun View Post
busy busy busy times.

Second prototype completed with accessories.

First test drives at Google's Earth Day event last month

Huge Maker Faire event this past weekend - 2,000-4,000 people stopped by.

We made Engadget: http://www.engadget.com/2012/05/22/e...r-faire-video/

Gearing up to public conversions / kit sales this quarter.

Valery
Val,
Great Job!!! please check your email...
-Y.
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  #126  
Old 06-23-2012, 09:16 PM
drgrieve drgrieve is offline
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

Hi Valery - been meaning to ask this question for awhile now. In the video you causally mention regen in the upcoming controller. Is this DC (interpole?) or AC?

Any titbits welcome ....
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  #127  
Old 06-24-2012, 12:59 AM
valerun valerun is offline
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

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Originally Posted by drgrieve View Post
Hi Valery - been meaning to ask this question for awhile now. In the video you causally mention regen in the upcoming controller. Is this DC (interpole?) or AC?

Any titbits welcome ....
DC SepEx. Similar power to Series.
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  #128  
Old 06-24-2012, 09:30 PM
tomofreno tomofreno is offline
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

Quote:
Originally Posted by valerun View Post
busy busy busy times.

Second prototype completed with accessories.

First test drives at Google's Earth Day event last month

Huge Maker Faire event this past weekend - 2,000-4,000 people stopped by.

We made Engadget: http://www.engadget.com/2012/05/22/e...r-faire-video/

Gearing up to public conversions / kit sales this quarter.

Valery
Noticed some cells laying on their sides in the trunk. According to the link below they are not supposed to be mounted that way. Not so?
http://visforvoltage.org/forum/9972-...ll-orientation

Also, what "next generation" batteries were you referring to?
You interview well.
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  #129  
Old 06-25-2012, 03:08 AM
TomA TomA is offline
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

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Originally Posted by tomofreno View Post
Noticed some cells laying on their sides in the trunk. According to the link below they are not supposed to be mounted that way. Not so?
http://visforvoltage.org/forum/9972-...ll-orientation

Also, what "next generation" batteries were you referring to?
You interview well.
Jack Rickard has been running a 20 or so cells laying flat in his second build of the red Porsche speedster for well over a year with no apparent problems. Just a data point. It would sure be easier for packaging if this turned out to be a non-issue. BTW, nothing in the mfr literature warns against this orientation...
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  #130  
Old 07-10-2012, 09:04 PM
drgrieve drgrieve is offline
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Default Re: Starting new build: BMW 3-series (E46) - high-performance electric

Quote:
Originally Posted by valerun View Post
DC SepEx. Similar power to Series.
Hey that's an interesting development!

Are you building a DC SepEx controller? Able to share your target parameters - volts, amps , regen amps etc

I've seen a few SepEx motors around - Kostov sell some - which are you planning to use?

Are you going Calb "grey" or Sinopoly "black" for your future builds?

Thanks,

David.
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