Hi All, I'm going with Phil here as the best engineered, lowest cost
conversion now is swapping the whole Tesla rear end subframe and buying a
control card from openinverter which has control cards other drives too.And
so, so many totaled the price should be fairly low. DC controllers of any
power just cost too much new comes free with the subframe.And the 3 rear will
match the power, sportiness of the BMW better than any other I know of. I lot
of examples on youtube to follow.For people who want to build their own body,
using a 3 chassis is hard to beat. Look up those who are taking everything off
a 3 they can and still runs. Leroy is one. 'Leroy Tesla racing' should pop it
up.Jerry Dycus
On 4/26/2024 4:14 AM, (-Phil-) via EV wrote:
> In this age I declare DC dead. It would be hard to go wrong if you can
> cram a Tesla Model 3 rear drive unit in there, they are some of the most
> reliable and efficient units made. Unless you do something special (such
> as SepEx) you don't get regen with DC. This takes a large efficiency hit,
> especially in local city driving.
>
> We do OEM-level conversions of the Ram Promaster to all-electric using the
> Tesla Model 3 Drive unit. They have been proven to be almost bomb-proof
> even lugging very heavy vans around.
>
> But that said, a Conversion is non-trivial. We did 2 years of engineering
> to bring our vans to market. It's a long project even for someone with
> deep mechanical and electrical experience. It can be very rewarding, but
> it's not something I'd suggest unless you have a lot of time (such as being
> retired) and the skills. (Either that or be willing to pay $50k+
> minimum) Some high-quality one-off conversions done by skilled
> professionals routinely end up in the $200k range.
>
> One common "old school" method was to bolt a DC motor to an old ICE
> transmission with an adapter plate. These drivelines are highly lossy,
> just the right-angle conversion at the hypoid pinion drive in the rear-end
> can suck down over a kilowatt of loss! There's a reason why you see the
> lifted truck guys put big aluminum-finned covers on them. Then there's
> the transmission... Plus you get no regen. Yeah it's mechanically
> easier, but you end up with a short range low-performance conversion.
>
>
> On Thu, Apr 25, 2024 at 3:52 AM bill devos via EV <[email protected]> wrote:
>
>> Thank you, Lee. I will definitely look up these publications. I believe I
>> did look at one of these last year and have to admit I was a bit blown over
>> by the depth of the discussion for instance, how does one decide whether to
>> go AC or DC?
>> Bill devos. Rochester, New York.
>>
>> Sent from my iPhone
>>
>>
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