- MemberNovember 21, 2022 at 9:31 am
We know that the shift from foam-honeycomb fiberglass to CFSMC and fiberglass SMC will increase Aptera’s range by lowering its weight and we know that heavy EVs are extremely inefficient. Here’s another (coming) weight-saver:
- MemberNovember 21, 2022 at 9:39 am
I wonder if the unnamed co-developer is Magnaplan?
- MemberNovember 21, 2022 at 9:47 am
Cost is also very important. A $500,000 supercar is not going to be used for commuters. At highway speed (55mph or above) the impact of weight is very small compared to aerodynamics
If you want to see plausible number make a copy of this sheet. Many specs are estimates but the physics of weight impact on range is likely very close as 0.0085 is normal low rolling tires.
- MemberNovember 21, 2022 at 5:47 pm
@Curtis Cibinel But aerodynamics don’t really come into play until a certain velocity is attained: Chris once stated “about 45mph” – so weight savings ARE impactful and, perhaps, more impactful when the vehicle is moving more slowly and cannot benefit from any aero-advantage.
- MemberNovember 21, 2022 at 11:44 am
Do we “know” that it will be significantly lighter? The new CFSMC is better suited to larger scale mass production, sure. I’m guessing it will be lighter too, but I don’t presume to know. Did I miss that utterance from an autoreactive source?
- MemberNovember 21, 2022 at 5:45 pm
@Joel Smith We “know” that, for a given volume of material, CFSMC weighs less than the foam-filled composite. We also “know” that it’s stronger and more rigid.
- MemberNovember 21, 2022 at 3:20 pm
Saw in the tech news that LG is making thin, lightweight automotive speakers. Might be a nice upgrade for the Aptera; assuming decent audio quality. Personally, mount a center channel to the headrest so I can hear people talk (half deaf).
- MemberNovember 21, 2022 at 7:14 pm
There isn’t a lot of weight to be saved with the speakers. Nobody put’s Klipschorns into a car. I just hope the speakers that they do use will be decent.