Re: Batteries - EV Conversion

On 3/1/2025 3:51 PM, Bob La Londe wrote:

On 3/1/2025 3:37 PM, Jim Wilkins wrote:

Those horsepower numbers seem exceedingly large. Is it really required?
I'm thinking in terms of 100hp peak, 20hp continuous at most. It
might require a multi-speed transmission, but that's key to efficiency
anyway. Am I overlooking something? A 12 kg LiFePO4 battery can deliver
about a kilowatt for a minute or so. Do you really want 250 of them?
>
bob prohaska
>
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My 91 Ford Ranger has a 105HP 4 cylinder engine that can barely get it to 70MPH on flat ground. It was fine around town and for commuting in bumper to bumper traffic at 50MPH. I bought it for its 7' bed and put up with the Pinto engine.
>
https://en.wikipedia.org/wiki/Ford_Pinto_engine#Lima_OHC_(LL)
>
"A version with two spark plugs per cylinder, distributor-less ignition, and reduced main bearing sizes was introduced in the 1989 Ford Ranger and 1991 Ford Mustang. This engine produced 105 hp (78 kW) and 183 N⋅m (135 lb⋅ft)."
>

 Jim basically made the same point as my long winded reply.
 Horsepower is horsepower.  I want to make a surface street work vehicle out of it.  Around here that means I'll have to do 55 once in a while to get everywhere around town.  I also want to be able to haul a little bit with it.
 If I was using it as a tractor substitute around the property it might be different, but I have a tractor already.
 Having owned a few trucks, all used for work, some rarely going highway speed, I can't believe I'd want less than 200HP on tap, but if the price was right I might live with 160ish.
 

Now if you want to get silly look at this beast. https://www.fuel2electric.com/store/motors-and-controllers/revolt-systems-450kw-cr-43-B-crate-motor 450kW is about 533 horsepower.
Then look at the price.

 

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Bob La Londe
CNC Molds N Stuff
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