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Engineering Materials

BASF Reveals More BMWi3 Materials

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Ann R. Thryft
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Re: interesting!
Ann R. Thryft   5/29/2014 2:47:54 PM
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Thanks, Nadine. I think that's the point here, too. It's taken a lot of work to get to the first all carbon-composite BIW in a production vehicle.

NadineJ
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interesting!
NadineJ   5/28/2014 4:02:29 PM
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I think the uniqueness of the materials is the key point.  It could be a game changer if other manufacturers or, especially BMW, can move forward with it.

Jerry dycus
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Re: So what does it weigh!?
Jerry dycus   5/28/2014 3:02:15 PM
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If that was true Ann but it's not. 

  Fact is for a composite vehicle, it's rather a pig.   For instance several present, Echo, etc,  IMEV,  and many old steel cars the same size, it's rather small, weigh less, under 2500lbs.

My oldb steel  Rabbit diesel the same size got better mileage, 50mpg,  and only weighed 1600lbs in steel, 1,000lbs less!!  And at least 20 models then under 2,000lbs. Great simple low cost  cars, I wish we had such again.

If a CF body can't weigh less than steel yet cost 5x's more, what good is it other than hype?

And since the products you have in the article are a cause of it, it's germaine.

And no Ann unless like Tesla cramming batteries in, 81 mile range EV drives/batteries  in total weigh no more than a gas version ICE in total does.

Fact is done right in CF though better in medium tech composites, shouldn't weigh over 1500lbs with the same range, performance and cost 50% as much as the i3.

That would be an improvement.

Ann R. Thryft
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Re: So what does it weigh!?
Ann R. Thryft   5/22/2014 11:26:42 AM
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Thanks for the weight stat, Cabe. That's interesting to hear that it's light for a car in its class--I assume you meant electric cars? The difficulty of making electric cars weigh less is pretty obvious: heavy batteries. That's why in the BMW i series they're placed in the bottom Drive module, as we mention.

Ann R. Thryft
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Re: So what does it weigh!?
Ann R. Thryft   5/22/2014 11:23:49 AM
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Well ChriSharek, I couldn't disagree with you more: the point of this particular article wasn't what the car weighs, or even the all-carbon composite design of the Life module/BIW, an important first in design in an all-electric vehicle or any vehicle. We already covered those topics in other articles, linked to in this one. The point of this article was simply, hey here's more from this vendor, BASF, which we stated clearly in the lead paragraph. All articles -- especially short blogs such as this one -- can't be all things to all people. So we can just agree to disagree.



ChriSharek
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Re: So what does it weigh!?
ChriSharek   5/22/2014 7:55:44 AM
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While I appreciate the article, I couldn't disagree with you more, Ann. The entire conceptual design of this EV and what makes it different from all the others is this use of CF. The overall weight of the vehicle is the result or end product from their design. It is critical. Having said that and researched the 2600 lbs figure, I am even less impressed by the reduced weight in comparison to the 2011 model year vehicles of the Leaf or Volt. BMW is clearly in catch up mode especially with their pathetic attempt at extending the range with an afterthought of a design once they saw the success of the Volt.

Cabe Atwell
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Re: So what does it weigh!?
Cabe Atwell   5/21/2014 11:18:19 PM
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The weight of the vehicle is roughly 2,600lbs 'unloaded', which is pretty light for a vehicle in its class. I'm interested in what the 'real-world' numbers will be once it's available to the masses. We'll see if it has the same performance as my cassette tapes they manufactured back in the early 80's.

Ann R. Thryft
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Re: So what does it weigh!?
Ann R. Thryft   5/21/2014 1:28:46 PM
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As you mention, ChriSharek, that info is easily googlable. Since the materials mentioned in this article are only a few and only from one vendor, overall vehicle weight didn't seem like a particularly useful or relevant statistic.

ChriSharek
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So what does it weigh!?
ChriSharek   5/20/2014 1:53:15 PM
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All of that information about the materials and how light and strong they are without the inclusion of the overall weight of the vehicle?  Certainly a quick google could find it, but should have been included in the write-up, IMHO.

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