[remy_martian]

You'll get more funds into the children's hands by handing over the project money.

Your goals are impossible. 10h rally with an electric? No way.

 

[remy_martian]

I'm at a complete loss as to why he's building a car when electric cars exist. He hasn't picked a car out yet, he never stated any rules for this "rally", so pick out an electric, mod it, put a roll cage in it and done.

 

[remy_martian]

I'd go with a fast swap pack from a support vehicle that has a big diesel generator on it.

cough cough

Biodiesel fueled of course

 

[remy_martian]

You need the power unit (motor and reduction gear) from a modern EV
Battery pack the same -
Expect to run in the 360 - 400 volt range
Lower voltage units draw more current with higher losses

Despite Brian's comment today Tesla's have a higher efficiency than any of their competitors in terms of energy usage per mile

So says Elon

Why would that be? Must be the hub caps 😂

No longer all Teslas at the top:

 

[remy_martian]

The Leaf has 30% worse efficiency in that chart, so why does it matter when efficiency was allegedly at the top of your list of requirements?

Make a list of priorities, stop moving the cheese with confirmation bias.

 

[remy_martian]

No free lunch. Your efficiency will turn to crap if you crank the revs up, unless you load up on more battery, which also makes your efficiency turn to crap.

I'd also hypothesize the Cd on a Leaf is better than on your proposed Honda Civic. Also am at a loss why you wouldn't just mod a Leaf for your playtime rally.

 

[remy_martian]

Several of us here do. I'm the autistic one 🤓

You can most certainly get attention with a Leaf. Aero mods, widebody, wide tires, a few extra cells on top of the battery stack to get the RPM (custom cut gearing in the gearbox accordingly) and efficiency up, etc.

Aero'd ricers are a dime a dozen and get no attention. A widebodied overvolted Leaf with a downforce wing cantilevered off its ass? Nissan should be throwing money at you to do it.

ALL of the popular hotrodded cars now were originally bought by accountants and secretaries.

 

[remy_martian]

I just did a search, not expecting to find anything. Sure enough, there's a concept rendering out there.

So...here's your badass rally car blueprint:

 

[remy_martian]

Stripping a Leaf, including its wiring harnesses is a LOT easier than cramming crap into an equally crappy car not designed to be electric. Rewiring it is easier because you only need to restore the CAN bus, the same wiring needed in the Civic. The HV cables, steering, etc all work & stay.

You're building a moving billboard, not prototyping a production vehicle for Honda. As I said, ricers have been done to death and won't get noticed (what makes it "electric" from outward appearance? stickers? 😂😂😂 )...nobody has done a Leaf - and that creates buzz, aka $$$

 

[remy_martian]

What do you mean by "single external module"? What is that?

 

[remy_martian]

I am NOT building a Leaf.
I did not ask for a business plan.
This is very frustrating.

If the leaf unit is not able to be operated from a single external module we might have to look beyond that. The build plan is still open for change in any direction.

You didn't get a business plan. You got a marketing strategy.

You CAN operate the Leaf from a single external "module" - lots of people here are using the Resolve controller to exactly do that.

You would be smart to have temperature, voltage, and other telemetry to be able to do PM during charging, unless you're show vs go.

The beauty of what we recommended is little to no mechanical design, other than perhaps adding a few modules to the top of the pack to overvolt the motor.

The car would be stripped of everything but its essentials, but the battery pack and drivetrain are as God, and Nissan, intended them to be...that is THE most RELIABLE build convergence in what's been on the table so far and reliability wins endurance races/rallies. Budget and time is better spent elsewhere than cribbing some angle iron mounts up whose welds will break and spill battery guts all over the road course.

What I would do from there is add a few modules to the top of the cell stack to overvolt the HV section by 10-20%. Run 20% overcurrent and you're close to 300HP.
.
Your build plan allegedly is open for change in any direction, except, of course, for that being recommended here by everybody 🤓

That widebody design, by the way, is gluing foam blocks to the car and shaping them with a knife and a surform and carbody sanding tools. The concept pic I found is a great guide and fortunately doesn't have compound curves, though I'm sure you can easily find an artist or bodywork person to do any sculpting quite easily using this method. From there, a layer or two of carbon fiber or fiberglass, some filler, paint, and you're good. Lots of people would line up to do that build as volunteers, vs working on their mom's Honda Civic that doesn't feed from a nitrous bottle.

I will continue to make corrections, like to your module misperception...none of the original Leaf control or operator interfaces would likely remain working and would likely have been stripped and a Resolve controller would run the drivetrain show, like it would have in the Civic.

Unlike the Civic, the work is substantially reduced, and reliability is orders of magnitude higher if you leave the drive unit and battery pack in the car. Chargers, charger port, public charging ability all stay with the car and should continue working.

 

[remy_martian]

Lots of info. Tons of it. You're ignoring it

16 Tesla modules in a Civic?

😂😂😂

 

[remy_martian]

If you're building a race car you want to overvolt the motor and toss that graph in the garbage.

All the motors are the same -- the inverters change.

edit: take a look at @Dala's thread on hopping up the Leaf with an inverter swap. He has it on his Youtube channel as well.

 

[remy_martian]

Tuned to the decimal point for 0-100kph time marketing brags and the economettric drive cycle...

 

[remy_martian]

Putting a bunch of small circles is less dense than putting a bunch of small rectangles in a big rectangle.

Laptop batteries made sense because they were CHEAPER at the time.

Bigger circles in that big rectangle are even less dense by 0.86r^2...where Tesla is heading.

There's a point where you decide how much energy you need to store and then you figure out how to make that much energy FIT into the target vehicle. Before you select the battery. Or....you can pick 16 Tesla modules, fit 10 in your Civic, and be the only car in the rally towing a trailer 😂

Starting with "Tesla module" or "Tesla motor" will spend a lot of money in a hurry, create a lot of work and will paint you into a corner regarding making it work in your target vehicle.

See? I didn't say "Leaf" once 😂

The Norwegian must be mellowing me with real problems, like having asbestos to deal with in a build 😬 vs dealing with a more-stubborn-than-me guy continuing to fail at using an overclocked LEAF.

 

[remy_martian]

Again you're not making any sense. You want speed, you want efficiency, it's not a race but enthusiasts, yet you're using Mario Andretti's crew for a battery change pit stop.

Step back, frame exactly what the rules and conditions are for this competition, what road speed limits are since it is not a closed course (giving you 150MPH capability is pointless), what terrain is involved, what types of curves, etc. A rulebook of what you can and can't do. Road conditions, climate, etc.

Frankly, you've come across scatterbrained in the requirements, putting everyone here at odds with you for embracing idiocy, bias, and lore, over coming up with the optimal solution set (which is a widebodied Leaf, of course 😂)