[Bowser330]

Do you know how much weight was removed all together, or will you wait to weigh it when the build it complete?

[valerun]

Originally Posted by Bowser330

Do you know how much weight was removed all together, or will you wait to weigh it when the build it complete?

didn't weigh it but according to the published specs on parts, about 600lbs. Also, 16 gallons of gas will not be there, or another 100lbs. Finally, will be removing spare wheel and a 12V battery, or another 100lbs. So total -800lbs, give or take.

The original empty weight was ~3300lbs. So we are looking at ~2600lbs starting weight for conversion.

EV stuff:
1. Motor+controller+mounts: 300lbs
2. 100 100AH cells with boxes and mounts: 750lbs
3. Accessory drives etc: 50lbs.

So I am expecting to gain ~300lbs or ~10% of the original weight.

V

[Bowser330]

Originally Posted by valerun

didn't weigh it but according to the published specs on parts, about 600lbs. Also, 16 gallons of gas will not be there, or another 100lbs. Finally, will be removing spare wheel and a 12V battery, or another 100lbs. So total -800lbs, give or take.

The original empty weight was ~3300lbs. So we are looking at ~2600lbs starting weight for conversion.

EV stuff:
1. Motor+controller+mounts: 300lbs
2. 100 100AH cells with boxes and mounts: 750lbs
3. Accessory drives etc: 50lbs.

So I am expecting to gain ~300lbs or ~10% of the original weight.

V

NICE, 3600lbs is what the new 3-series weighs anyway, so that seems very reasonable

[valerun]

Originally Posted by Bowser330

NICE, 3600lbs is what the new 3-series weighs anyway, so that seems very reasonable

yeah. my '09 335xi is 3850...

[Huub3]

Hi Valerun,

this is good info. I am intrigued by your remark "according to the published specs on parts".

I have never been able to find reliable weight info for parts/components. Can you give a hint on where this data is available?

Thanks a lot!


Huub

Originally Posted by valerun

didn't weigh it but according to the published specs on parts, about 600lbs. Also, 16 gallons of gas will not be there, or another 100lbs. Finally, will be removing spare wheel and a 12V battery, or another 100lbs. So total -800lbs, give or take.

The original empty weight was ~3300lbs. So we are looking at ~2600lbs starting weight for conversion.

EV stuff:
1. Motor+controller+mounts: 300lbs
2. 100 100AH cells with boxes and mounts: 750lbs
3. Accessory drives etc: 50lbs.

So I am expecting to gain ~300lbs or ~10% of the original weight.

V

[jackbauer]

Now i know why you need that 1000amp controller 100 cells is about 320v nominal. Have you plans for a boost type charger?

[valerun]

Originally Posted by jackbauer

Now i know why you need that 1000amp controller 100 cells is about 320v nominal. Have you plans for a boost type charger?

Hi Damien - nice to see you here ;-) check out http://www.diyelectriccar.com/forums...779#post249779 for the charger update - got a 10kW PFC stage working. Produces 390V output so good for any battery voltage. In fact, If one uses 1200V IGBT part, one can boost to pretty much any voltage likely ever encountered in an EV.

The buck charger we all built then connects to this PFC stage (with all the AC input stuff (bridges / caps, etc) removed.

Total parts cost is ~$130. The toughest part was to find a PFC IC that would work at IGBT-compatible frequency (using 22kHz now - seems to work with a 200A half-bridge module I got from ebay - $20 in quantities of 10+).

V

[valerun]

Originally Posted by jackbauer

Now i know why you need that 1000amp controller 100 cells is about 320v nominal. Have you plans for a boost type charger?

Actually, I am hoping for 1500A controller ;-)) or, with dual motor setup, working up to 600V (2 11" Kostovs 250V motors in series)... Got to get that car moving!

[Bowser330]

Originally Posted by valerun

Actually, I am hoping for 1500A controller ;-)) or, with dual motor setup, working up to 600V (2 11" Kostovs 250V motors in series)... Got to get that car moving!

youre making your own controller right?

[valerun]

Originally Posted by Bowser330

youre making your own controller right?

that's right. http://www.diyelectriccar.com/forums...ock-60262.html. Using $40 1200V 600A IGBTs from ebay (4 of them already got me to 1200A from 265VDC battery (at ~30kW as I am using a stationary inductor as a load - quite close to the actual motor load, only no EMF...).