09-21-2020, 01:40 PM
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#21 (permalink)
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Master EcoModder
Join Date: Aug 2012
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Quote:
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Originally Posted by Piotrsko
Screws facing vertical holding a load isn't a good idea, don't have them on aircraft without some sort of safety device
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Don't know if I'm making this up after the fact, but horizontal electric screws into holes in vertical pegs or pins.
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09-22-2020, 04:31 PM
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#22 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
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So, this bucket of crap has run 24 hours of LeMons repeatedly. It is a Dodge Omni GT rebuilt by Jet Electra as an EV back in the day of gas lines at the pump:
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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09-23-2020, 08:06 PM
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#23 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
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Quote:
Originally Posted by jakobnev
... Didn't the rules say unlimited budget for electrics?
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Yes. None of the usual limits.
Quote:
Originally Posted by jakobnev
... Build a quick swap ramp like this where you leave the hot empty one and pick up a nice cool full one:
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That is a smart solution, hey. Here is what jalopnik said about a plausible EV LeMons prize build: https://jalopnik.com/lemons-is-doing...-le-1843973755
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Get a base car that is cheap, something relatively lightweight and sporty with plenty of aftermarket support and knowhow, like perhaps a Toyota Celica or an early 1990s Honda Civic. Grab the CVT and integral electric motor from a XW20 Toyota Prius from the junkyard for a bill or two. That motor is good for 67 horsepower and 295 lb-ft of torque, which is plenty for a winning Lemons car. Build at least three swappable racks of LiPo batteries generally used for RC planes and the like. Build a swapping mechanism that allows these racks to slide into the car like cartridges and facilitate a sub-30 second refill.
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You ramp might be the way to something like a 30 second swap.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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09-24-2020, 11:53 AM
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#24 (permalink)
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Somewhat crazed
Join Date: Sep 2013
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Not sure about "TOY" lipo packs since I have failed them in spectacular ways. Should be able to hot swap under 14 seconds if held internal.
Why not a tesla drivetrain?
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09-24-2020, 12:47 PM
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#25 (permalink)
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Human Environmentalist
Join Date: Aug 2010
Location: Oregon
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Quote:
Originally Posted by Piotrsko
Not sure about "TOY" lipo packs since I have failed them in spectacular ways. Should be able to hot swap under 14 seconds if held internal.
Why not a tesla drivetrain?
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That's the thing, the EV had to cheat. You get $500 to spend total on the vehicle. If all $500 went into batteries, you might get a 4 kWh pack.
The only explanation I can see is that the rules allow an unlimited amount of money to be spent on safety including the fuel cell. Perhaps they regard the battery as a fuel storage cell, and therefore exempt from the $500 limit. |
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10-02-2020, 01:18 AM
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#26 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
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Quote:
Originally Posted by redpoint5
... Perhaps they regard the battery as a fuel storage cell, and therefore exempt from the $500 limit.
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Yes.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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