Aussie Autocross EV

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galderdi
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Joined: 08/11/2016
Points: 25

Hi, I have been stalking the forum for some time and I can now give you a summary of my background and plunge into the EV world.

I am located in Brisbane, Queensland, Australia. I have been playing around in grass roots motorsport for about 12 years. Generally I compete in Autocross, Khanacross, Motorkhana, Hill Climbs and sprints. With the exception of the sprints all these sports are a time trial involving a standing start. I saw a Fiat Turbo Diesel doing quite well so I figured if torque is an advantage then electric motors are the way to go.

I toyed with the idea for a while before makign the decision to proceed in March 2015. I decided on front wheel drive as front wheel drive statistically has an advantage over rear wheel drive in my sports and all wheel drive is against our rules. I found an Advanced DC FB1-4001, built a chasis from the ground up and used a lot of running gear from a old Nissan Pulsar. By November 2015 I had a working prototype using lead acid batteries and a Curtis controller.

2016 was a bit of a development year while I sorted out all the teething issues. The first event was Feb 2016 (11 months after commencing the build). Over the following months I soon found the batteries and the controller were not up to the task. But even then I was placing in the top 25% of the all ICE field. I also experienced brake failures, suspension failures etc etc as expected with a first attempt at a home made chassis. Mid 2016 I converted to a Lithium Ion pack from a Chevy Volt and a 1000amp Zeva controller and it has transformed the car.

So far I have only entered in Motorkhana and Khanacross but I will soon enter some hill climbs too as soon as I have everything dialed in. My best result to date was a 3rd place outright in the 2nd round of the Queensland Motorkhana Championship. The car is better suited to khanacross as it is just as wide as a road car while most motorkhana cars are single seaters allowing them to dart between the obstacles at greater speed. Khanacross is more flowing and is suited to a car like mine with a firmer footprint and low centre of gravity. The car weighs in at 530KG without the driver.

I have at the design phase of my next project. I have planned to build a whole new car in parrallel. But recently I decided to build a new chasis but then transfer most of the components from the first car to the second. This approach will save a heap of time and make it more achievable financially. I realised I am losing some of my torque advantage being front wheel drive, so the new car will be rear wheel drive. I will take everything I have learned from the first car and apply it to the new one. I am confident I can reduce the weight by 100KG (hopefully more). That would bring the weight down to around 430KG. The weight isn't the main improvement though, the width will also reduce to make it more competitive in motorkhana. At this stage I am hoping to build the chasis by the end of 2017 so I can have the new car racing in 2018. But that is tight so I won't bet my house on it.

I will add some photos and videos shortly.

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galderdi
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Joined: 08/11/2016
Points: 25
Re: Aussie Autocross EV

Oh and by the way. I created a brand name so people can find my EV easily. Just google "Full Charge Motorsport"

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galderdi
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Joined: 08/11/2016
Points: 25
Re: Aussie Autocross EV

Here are some videos from the Gladestone round of the Queensland Motorkhana championship where I placed 3rd outright




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galderdi
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Joined: 08/11/2016
Points: 25
Re: Aussie Autocross EV

Here is an external view from last Sunday. This was a khanacross. I included the previous competitor (Dan in his WRX) so you can see the comparison in speed. This particular run I actually had a very competitive time but threw it all away when my wet shoe slipped off the brake at the finish line. Because we are required to stop at the finish line I earned a 22 second penality which cost me 10 places in the standings.

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galderdi
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Joined: 08/11/2016
Points: 25
Re: Aussie Autocross EV

Here are a few of the onboard videos from last Sunday's khanacross:



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galderdi
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Joined: 08/11/2016
Points: 25
Re: Aussie Autocross EV

My next event is a motorkhana and is coming up soon. It will be held at Willowbank on June 18. IF anyone is local feel free to come and take a look. Spectators are free. I'll post another update after the event.

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galderdi
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Joined: 08/11/2016
Points: 25
Re: Aussie Autocross EV

Had mixed results in that last Motorkhana. I got quite a few 2nd and 3rd places in many runs. But brain fade cost me dearly in a couple of runs and it really brought my average down. I ended up 11th outright. Still happy enough though. I just need tobe more consistant.

My next event is a khanacross at Lakeside this Sunday. It should really suit the car. I'll post an update after the event.

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EV racing is awesome

galderdi
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Joined: 08/11/2016
Points: 25
Re: Aussie Autocross EV

I had a ball at the Lotus Khanacross at lakeside. The track is quite tricky with a couple of blind corners. It really would help to have track time on this one. My first few runs were average at best but I did improve on my last few runs. I really struggled due to rear end grip. You know it’s bad when you are over steering in a front wheel drive car. I managed to come 34th from 66 competitors. That’s not bad considering the quality of the field. I beat 6 out of 13 Lotuses and 9 out of 16 Porsches. If I wasn’t retiring the car I could put better tyres on the rear and improve the rear geometry and I would be confident of picking up quite a few places. Overall I am quite happy.

I had a problem with my camera and only got 1 video with telemetry. It’s not the fastest run and watch for the plover at about 1:22

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