EV sonic 7 kit car

[kiwiev]

Another run today sunny here cant wait for spring to get this beast on the road

Had a mechanic mate over changing break pads on my truck took him for a spin its quite nice to watch your passengers head hit the back of the seat out of the corner of your eye when you plant it. :lol:

Cheers Kiwi

 

[kiwiev]

[youtube]1xi731MOaGU[/youtube]

 

[sn0wchyld]

bloody awsome mate, subed. more vids too - contrary to the problems it caused I thought the motor lockup vid sounded great heheh!

 

[kiwiev]

Thanks snow

Trying to get hold of the engineers atm the plan is to have the car and bikes at EV fest in Canberra I think the 3rd of October.

Cheers Kiwi

 

[Bazaki]

Just found this thread.

I am also building a mev sonic 7 to electric

Soliton 1 with kostov 11 inch alpha at 350v 1000a 350kw. With honda integra type r gearbox 80%LSD 16 kwh chevy volt battery.

I did not read everything but how much kw input do you have and do you know the weight. ?

Here it still had the 120hp ford motor inside

 

[kiwiev]

Hi cool to see another Sonic EV

I have access to 170Kw

And weight came in at 680kg a bit heavier than the ICE

I have a 23.5Kw battery I went A.C. for a couple of reasons

1. Light motor 65Kg
2. Regen ability

Cheers Kiwi

 

[kiwiev]

Mounted some small mudflaps today just to stop the small grit off road coming into car.
Started to cut cardboard templates for floor and side carpet.

Then hopefully one trip to the engineer and off to the Canberra EV show on the 8th of October.

Cheers Kiwi

 

[Cowardlyduck]

Great stuff mate.
Those mud-flaps will surely be appreciated for passengers on that dirt road of yours.
Nah, it wasn't that bad. :lol:

Not sure I ever commented on this thread after my spin in the car the other week...but, THIS THING RIPS!!!
And that was off-road, not even at full power!

Kiwiev was even brave enough to let me have a short drive on my own and I can say for certain that I've never felt as much acceleration off-road in my life!

Can't wait to see what it's capable of on the track!

Cheers

 

[kiwiev]

Got bonnet latches back on after paint job, and cut out another few templates for floor carpet,

Also programmed controller with a power and economy mode switch.

Photo of steering wheel cover that turned up today and about an hour cutting to fit dash

Cheers Kiwi

 

[Hyena]

Sweet build kiwi. I dont stray into the large EV section of the forum much and only just saw this.
The desire to build an electric car was how I first got into ebikes, I figured I'd start small scale and work my way up (especially given the cost of batteries) then found ebikes were just too much fun and never got much past that!

How are you getting on with the engineer ? It strikes me that that is one of the bigger stumbling blocks with actually getting the car on the road.

I've been looking around for a CRX donor too but the bloody things hold their value very well due to the fully sick brigade dropping turbo engine conversions in them. The sonic DOES look cool though and I think it's *probably* worth the hassles you're having with retrofitting other car components rather than converting an existing car. The weight is certainly impressive.

Dare I ask how much you've spent thus far ? If you have a rough break down of the component prices I'd be keen to see it.

Did you buy is expressly to make electric ? I know the mobs that make these kit cars are usually open to modding the frames to suit your planned engine set up and being electric I imagine there's certain ICE elements they could leave out.

 

[kiwiev]

Sweet build kiwi. I dont stray into the large EV section of the forum much and only just saw this.
The desire to build an electric car was how I first got into ebikes, I figured I'd start small scale and work my way up (especially given the cost of batteries) then found ebikes were just too much fun and never got much past that!

How are you getting on with the engineer ? It strikes me that that is one of the bigger stumbling blocks with actually getting the car on the road.

I've been looking around for a CRX donor too but the bloody things hold their value very well due to the fully sick brigade dropping turbo engine conversions in them. The sonic DOES look cool though and I think it's *probably* worth the hassles you're having with retrofitting other car components rather than converting an existing car. The weight is certainly impressive.

Dare I ask how much you've spent thus far ? If you have a rough break down of the component prices I'd be keen to see it.

Did you buy is expressly to make electric ? I know the mobs that make these kit cars are usually open to modding the frames to suit your planned engine set up and being electric I imagine there's certain ICE elements they could leave out.

Thanks Jay

The engineer is "real world" not many of us around any more so not too much of stick in the mud guy I will take the car back to him at the end of the month (I think he just wants another spin)

I was going to use an existing ICE car but thought this was more KISS the Kit was around $13,000 to 15,000 depending on brakes etc she owes me near $50,000 but I bought the gear when our dollar was alot better.

So the kit was $15,000
motor controllers $10,500
batteries and BMS $8,500
And the rest in seats powder coat materials diffs and wheel tires etc.

Yes I bought it especially to go electric

This car will be for sale once I get her REGO etc. May be good commuter for you Jay it would be bloody fun in Sydney.

cheers Kiwi

 

[dnmun]

if your engineer needs other outside expert level opinions about safety and other expert parameters then there are a lot of us who could provide expert documentation for you. external statements of qualification as it were that he could use to back his decision.

really sweet ride. it almost seems more like a one of a kind collectors car. gotta be one of the nicest builds on the sphere.

on the run in the dirt video there is a big reservoir on the horizon it seems lie midway in the video. is that the big lake for that project to redirect the river through the mountain? i had googled it once before and i really was impressed.

 

[kiwiev]

if your engineer needs other outside expert level opinions about safety and other expert parameters then there are a lot of us who could provide expert documentation for you. external statements of qualification as it were that he could use to back his decision.

really sweet ride. it almost seems more like a one of a kind collectors car. gotta be one of the nicest builds on the sphere.

on the run in the dirt video there is a big reservoir on the horizon it seems lie midway in the video. is that the big lake for that project to redirect the river through the mountain? i had googled it once before and i really was impressed.

Thanks I really appreciate your kind comments , and if I need more help engineering wise I will hit you up

I agree it is one of a kind I think the only one in the world. I built this to prove electric cars can be fun and fast

Yes you are correct about the lake it is lake Jindabyne part of the snowy mountains scheme for hydro power I think there are over 200km of mountain tunnels connecting up all the reservoirs.

Cheers Kiwi

 

[Hyena]

I was going to use an existing ICE car but thought this was more KISS

LOL, I'm not sure building a car up from scratch is KISS!!

the Kit was around $13,000 to 15,000 depending on brakes etc she owes me near $50,000 but I bought the gear when our dollar was alot better.
So the kit was $15,000
motor controllers $10,500
batteries and BMS $8,500
And the rest in seats powder coat materials diffs and wheel tires etc.

Ouch. Yeah it all adds up quickly. And our dollar is depressingly low at the moment. Sadly I dont think we'll see it back up at 1:1 with the USD for a VERY long time, if at all.
Have you measured the peak kw coming out of the batteries under full acceleration ? And what you use cruising and say 60 and 80km/hr ?

This car will be for sale once I get her REGO etc. May be good commuter for you Jay it would be bloody fun in Sydney.

haha don't tempt me! Sadly my wife would castrate me if I came home with that, unless I left a 0 off when I told her the price
Small amounts I can nibble away at over time :wink:
I'd love something like that but it's not terribly practical as a commuter. As an electric sports car, sure, and it's relatively cheap for the performance you get.
Given how light it is, and the sort of performance you're getting with it built the way it is, it makes me wonder how it'd perform with 2 dirty big hub motors in the back. Fed say 40kw bursts each, I reckon it'd skip along pretty well and have weight savings too once you lose the diff and drive shafts. If I ever get around to doing anything I'd probably only run a 100-150ah pack, made from large format lipo cells so that would save weight too.

 

[kiwiev]

Hey Hyena

So under 100% acceleration I can pull 550amps per controller 1100amps total at around 155volts hot off the charge. Cruising at 80 to 100 on the flat pulling 25 to 40amps.


The hubmotor idea sounds cool with large format lipo Google the electric imp they are racing with them.

My battery pack is spot on at 160ah I drove it around for a day at home took 4 hours and 200 km best thing is not much voltage sag with a big pack but weight is a killer at 256kg. But I could change to a race pack 40ah and loose 200kg of car

Cheers Kiwi

 

[dnmun]

it looked like the only piece of smooth surface was down your driveway. reminded me of the county roads in the rockie mountains. but it is rare to see an empty country road anywhere in this country.

 

[kiwiev]

it looked like the only piece of smooth surface was down your driveway. reminded me of the county roads in the rockie mountains. but it is rare to see an empty country road anywhere in this country.

Yes I guess we take that for granted down under
Its about 2 mile of dirt out to the black top I have 10 neighbors on the road, but technically its a private road so I can use it for testing and our driveway is a mile long.

Cheers Kiwi

 

[Hyena]

Cruising at 80 to 100 on the flat pulling 25 to 40amps.

Is that per controller or total ? If total that's very impressive! My ebike pulls around 40A cruising at that speed!

My battery pack is spot on at 160ah I drove it around for a day at home took 4 hours and 200 km

Nice, so with a 100ah pack a 100km range would be totally doable with a conservative charge and discharge profile.

weight is a killer at 256kg. But I could change to a race pack 40ah and loose 200kg of car

That's a significant power:weight boost with such a light car! I imagine traction would then become your limiting factor.
By rough calculations I put a 100ah 36S lipo pack at around the 90kg mark, say 100kg allowing for a box and wiring 8)

 

[Lurkin]

I've been looking around for a CRX donor too but the bloody things hold their value very well due to the fully sick brigade dropping turbo engine conversions in them. The sonic DOES look cool though and I think it's *probably* worth the hassles you're having with retrofitting other car components rather than converting an existing car. The weight is certainly impressive.

I've been thinking something similar with a series four rx7... but that's a lot of 18650 spot welding!

No doubt you have had better choice of weight distribution by not being limited to the existing design of a retrofit. Will you be building more?

 

[kiwiev]

I've been looking around for a CRX donor too but the bloody things hold their value very well due to the fully sick brigade dropping turbo engine conversions in them. The sonic DOES look cool though and I think it's *probably* worth the hassles you're having with retrofitting other car components rather than converting an existing car. The weight is certainly impressive.

I've been thinking something similar with a series four rx7... but that's a lot of 18650 spot welding!

No doubt you have had better choice of weight distribution by not being limited to the existing design of a retrofit. Will you be building more?

The big thing is containment ADR recommend your batteries can hold 10G of force that's hard in and existing car only spots are fuel tank and engine mounts with out major engineering

My next car will be a Subaru something AWD FAST I think the plan is to Siamese couple 2 HPEV 35x2 that will be 330HP and 400ft/lb at the motor shaft, battery wise I have access to some Tesla packs about USD$900 complete with heating cooling BMS and fuse 3Kw so to be fair probably need 10 my wife will kill me when she finds out

Cheers Kiwi

 

[kiwiev]

Cruising at 80 to 100 on the flat pulling 25 to 40amps.

Is that per controller or total ? If total that's very impressive! My ebike pulls around 40A cruising at that speed!

Thats total of both controllers its really effective.

My battery pack is spot on at 160ah I drove it around for a day at home took 4 hours and 200 km

Nice, so with a 100ah pack a 100km range would be totally doable with a conservative charge and discharge profile.[/quote]

Sounds about right and dont forget Regen I have feed back over 600Amps at times

weight is a killer at 256kg. But I could change to a race pack 40ah and loose 200kg of car

That's a significant power:weight boost with such a light car! I imagine traction would then become your limiting factor.
By rough calculations I put a 100ah 36S lipo pack at around the 90kg mark, say 100kg allowing for a box and wiring 8)[/quote]

The cool think with the curtis controllers I have programed the acceleration rate to suit the tire coefficient so you dont sit there spining tires straight up that how I get fast 0 to 100 .
Cheers Kiwi

 

[ridethelightning]

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[kiwiev]

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Thanks mate more updates coming and will be on show

Cheers Kiwi

 

[Lurkin]

The big thing is containment ADR recommend your batteries can hold 10G of force that's hard in and existing car only spots are fuel tank and engine mounts with out major engineering

My next car will be a Subaru something AWD FAST I think the plan is to Siamese couple 2 HPEV 35x2 that will be 330HP and 400ft/lb at the motor shaft, battery wise I have access to some Tesla packs about USD$900 complete with heating cooling BMS and fuse 3Kw so to be fair probably need 10 my wife will kill me when she finds out

Cheers Kiwi

How do they test for the 10G? Is it literal testing or simulated somehow?

The Tesla packs must be modules of an overall Tesla pack. Nice! The other lads on here have been struggling to get hold of them...

 

[kiwiev]

How do they test for the 10G? Is it literal testing or simulated somehow?

just system engineering show that your containment can hold 10 times the battery weight in a crash

The Tesla packs must be modules of an overall Tesla pack. Nice! The other lads on here have been struggling to get hold of them....

see
www.evwest.com


Cheers Kiwi