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Old 04-02-2017, 06:59 AM
matthiaswm matthiaswm is offline
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Default Planning VW T2b Van conversion in Germany, help needed

Hi,

I am planning to convert my VW '74 T2b Van to electric. The car has already been in the acid bad, is being welded right now, and will hopefully be fully and freshly painted by June. Yes, I am rebuilding the entire car from the ground up, and I am looking for an appropriate conversion.

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* Your skill level with auto mechanics and fabrication

This is my second conversion. The first VW used DC and lead acid. It worked, but the range was unacceptable. Also, the car was in too bad of a condition to pass German inspections. My level of experience and fabrication skills are good.

* The range you are hoping to get (how many miles/charge)

I am targeting 130mi/charge at 60mph, or 200km at 105km/h

* What level of performance you are hoping to get

60mph continuously, 70mph for passing.

* How much money you are willing to put into your project

I know it won't be cheap, and I have burried a sack of cash in the back yard for this purpose.

* What parts you've already considered, if any.

It will definitely be an AC system with regenerative breaking. I am hoping for three-phase charging at 32A/22kW. Finding matching components is the big deal. As an additional challenge, all parts must be available in Europe and all electronics must have CE or some similar certifications, so I can get the car through the bi-yearly inspection.

Any help in finding the right combination of parts is greatly appreciated.

https://youtu.be/6f5zcoE-wW4?t=52s"> https://youtu.be/6f5zcoE-wW4?t=52s" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355">

Matthias

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  #2  
Old 04-02-2017, 10:59 AM
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madderscience madderscience is offline
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Default Re: Planning VW T2b Van conversion in Germany, help needed

Your performance goals are no problem. For a 130 mile / 200km range however you are going to need a quite large battery pack.

Assuming reasonable efforts to optimize Rolling Resistance and aerodynamic drag on such a vehicle I would guess 225wh/km or 360wh/mile at 60mph. There have been more than a few conversions of VW buses. I would research those and contact their owners to get a better idea of 100kph efficiency.

But or this example, for 200km you are looking at roughly a 50kwh battery.

This is two original nissan leaf batteries, or 3 original volt/ampera batteries for comparison. that would weigh roughly 1200lbs or 500kg. Its doable, especially in the leaf case by paralleling cell blocks. In the van it should be possible to find space for the large battery pack.

Good Luck
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Old 04-02-2017, 12:01 PM
matthiaswm matthiaswm is offline
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Default Re: Planning VW T2b Van conversion in Germany, help needed

Thanks, madderscience. Yes, space and weight are secondary in a VW Van. At the DMV-equivalent, they can reduce the additional weight without requiring better brakes or similar.

Yes, I will check other owners and see what they did. I would like to be on a 2017 standard with my controller and battery management. My previous built used the OpenReVolt, which was great, because I was able to modify the firmware to my needs... .
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Old 04-02-2017, 04:10 PM
Duncan Duncan is offline
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Default Re: Planning VW T2b Van conversion in Germany, help needed

Hi
If I was going to do that I would be looking for a complete wrecked Leaf plus another Leaf battery
I would be looking at putting the entire Leaf power train and using the Leaf charger and as much of it as is useful
Basically re-bodying a Leaf
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Old 04-02-2017, 09:30 PM
nucleus nucleus is offline
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Default Re: Planning VW T2b Van conversion in Germany, help needed

Quote:
Originally Posted by Duncan View Post
Hi
If I was going to do that I would be looking for a complete wrecked Leaf plus another Leaf battery
I would be looking at putting the entire Leaf power train and using the Leaf charger and as much of it as is useful
Basically re-bodying a Leaf
Great suggestion. Maybe a build a double power controller and ditto the charger from two nissan leafs
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Old 04-03-2017, 05:13 AM
favguy favguy is offline
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Default Re: Planning VW T2b Van conversion in Germany, help needed

Hi, Have a look at this thread, it's an older split screen VW van conversion using an entire Leaf as a donor, so should be very relevant to your similar bay window van.

http://www.diyelectriccar.com/forums...ce-177489.html
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Old 04-04-2017, 09:03 AM
matthiaswm matthiaswm is offline
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Default Re: Planning VW T2b Van conversion in Germany, help needed

Quote:
Originally Posted by Duncan View Post
If I was going to do that I would be looking for a complete wrecked Leaf plus another Leaf battery
I would be concerned that I don't have access to every aspect of that drive. Or is there enough documentation available on the Leaf?

Wow! Looking at the pictures in the link above, I am overwhelmed! As I said, this will be my second conversion, but the cable chaos that I see here is amazing. Well, sure, it's not a chaos, but reverse engineering that can't be less work than building something from scratch?

EDIT: Hmm, wow, even in Germany I can get two Leaf for under 20k. That is very likely less money than building from scratch. I guess I have to revisit my strategy ;-)

Last edited by matthiaswm; 04-04-2017 at 09:45 AM.
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