Search found 342 matches

by galderdi
Aug 19 2019 2:03am
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Here are some videos from my latest event yesterday:



by galderdi
Jun 27 2019 6:58pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Cheers for the reply and sorry for the terse post, was rather drunk at the time and thinking out loud. Also read through kiwiev's Sonic thread earlier (hot damn, I'd sleep with that car!), dual motors on that one and had a mish mash of thoughts on the possibilities. Not sure how the "standard car" ...
by galderdi
Jun 27 2019 12:54am
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Did you look into torque limiting/traction control? Makes the case for 4 independent motors and controllers, a leapfrog ahead of infernal combustion 4x4. The WRC cars are an example, the damn things can almost do ballet thanks to their traction control systems but they're limited to operating brake...
by galderdi
Jun 26 2019 5:42pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Great project and thread, subbed. Good luck with it, very interested in how it's working out in the hillclimbs. Thanks for the support and interest. Hillclimbs are super competitive and I'm not competitive at that level yet. I am a little under powered, my handling still isn't quite right and my br...
by galderdi
Jun 10 2019 12:16am
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Here are some of my videos from the Noosa Hill Climb over the weekend.



by galderdi
May 28 2019 1:46am
Forum: E-Bike General Discussion
Topic: Pictures of 70 mph E Kart
Replies: 16
Views: 1516

Re: Pictures of 70 mph E Kart

I can't wait for an update :-)
It looks like the little brother of my project
by galderdi
May 21 2019 12:47am
Forum: Large EV General Discussion
Topic: Newbie needs help for a go-kart project
Replies: 2
Views: 2255

Re: Newbie needs help for a go-kart project

Great to have you on board. Sounds like you will learn a lot (as did I). I am not totally familiar with Karts, mine is half way between a kart and a car. So I can't help with much other than to start a comparison of all the karts you can find and list all the components and their performance charact...
by galderdi
May 21 2019 12:35am
Forum: Large EV General Discussion
Topic: My application: Lancia-Ferrari D50 electric replica
Replies: 34
Views: 11399

Re: My application: Lancia-Ferrari D50 electric replica

Its funny reading this thread for the first time without noting the date stamps. I see pictures of a new born and suddenly she is 4 years old lol. Anyway I love your project. There are similarities with my own yet still significant differences. I personally wouldn't go with the on hub motors due to ...
by galderdi
May 21 2019 12:14am
Forum: Large EV General Discussion
Topic: 300hp single seat off road buggy project
Replies: 49
Views: 9654

Re: 300hp single seat off road buggy project

That's great to hear. It's one thing to set goals but it can be heart breaking and demotivating if they become impractical to reach. So keep it flexible/realistic/achievable. One of the reasons you will find it difficult to find a definitive quote on what any motor will handle is because there are t...
by galderdi
May 16 2019 5:34pm
Forum: Large EV General Discussion
Topic: 300hp single seat off road buggy project
Replies: 49
Views: 9654

Re: 300hp single seat off road buggy project

I was just reviewing some of the earlier posts/discussion. I think in summary your estimate of 450KG and 300HP is a somewhat challenging combination and I suspect you came up with the 450KG without understanding the battery constraints? My car is 450KG and includes a 7Kwh portion of a Volt battery w...
by galderdi
May 14 2019 9:50pm
Forum: Large EV General Discussion
Topic: 300hp single seat off road buggy project
Replies: 49
Views: 9654

Re: 300hp single seat off road buggy project

Nice, Just an idea, but maybe keep that diff and run a 4x4 low/high range transfer case. That way you get to choose the ratio depending on the purpose at the time? Otherwise you could de-couple the driveshaft from the motor and recouple them through a belt or chain drive setup. Then you can adjust f...
by galderdi
May 13 2019 9:44pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Here are a few videos from Saturday


by galderdi
May 12 2019 7:47pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

I had a great day at the Mt Cotton Hill climb on Saturday. My results were not all that impressive but quite respectable for a first attempt. I did end up in the Macadamia nuts (quite an effective safety barrier) on my second run. This event has made me realise the "understeer" issue I had been tryi...
by galderdi
Apr 23 2019 1:54am
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Here are some photos from last week
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by galderdi
Apr 22 2019 8:23pm
Forum: Large EV General Discussion
Topic: 300hp single seat off road buggy project
Replies: 49
Views: 9654

Re: 300hp single seat off road buggy project

Nice plan. Power glide style gearboxes seem to do a good job for those chasing straight line speed. If money were no object a bespoke dual clutch setup would be awesome too. But I suspect that is out of range for almost anyone. I think for quoting power anything around 75% is fair. And it also makes...
by galderdi
Apr 22 2019 8:09pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Thanks mate. I am always happy to help. I have learned a lot around suspension and handling as a result of this project. I think I am past any significant suspension modifications. I am now down to tweaks and fine tuning. I don't have a "locked diff" but it is supposed to be a viscous LSD. I don't t...
by galderdi
Apr 16 2019 5:49pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Well the results are in. I managed 7th from 44 entries. Not quite as good as I was expecting. Still respectable. I also managed 2nd in class, again behind the same competitor. I would have been 6th if I hadn't loaned my car to the 3rd place getter when his car died. The car is heading in the right d...
by galderdi
Apr 16 2019 5:27pm
Forum: Large EV General Discussion
Topic: 300hp single seat off road buggy project
Replies: 49
Views: 9654

Re: 300hp single seat off road buggy project

The controller should be ok. They will have limits set to avoid any damage. Motors on the other hand don't have the smarts in them to limit the power. Add 5 more amps = ok, add 5 more amps = ok, add 5 more amps = ok, add 5 more amps = ok, add 5 more amps = BANG!!! More like fizzzz actually as the co...
by galderdi
Apr 15 2019 8:59pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

I had a great day at the 2019 Interclub motorkhana. The car was fairly good. I am starting to get the hang of driving the car in this latest format. The new hydraulic handbrake in particular takes some practice. I also think it works best once warm. I did have some issues knocking my switches in the...
by galderdi
Apr 15 2019 8:49pm
Forum: Large EV General Discussion
Topic: 300hp single seat off road buggy project
Replies: 49
Views: 9654

Re: 300hp single seat off road buggy project

It all depends on your appetite for risk and the length of run time. You can run those massive current figures for a short time so long as the heat does not have time to build. Volts are a different story. When you start increasing volts every little detail becomes important and as a result every in...
by galderdi
Mar 05 2019 2:24am
Forum: Large EV General Discussion
Topic: 300hp single seat off road buggy project
Replies: 49
Views: 9654

Re: 300hp single seat off road buggy project

Thanks mate. Note sure of actual torque figures. Theoretically it is around 160ft/lbs but that is on paper based on 600amps. I am pushing 1000amps through mine (for short periods). The 0-100 is about 4.5 seconds. The battery pack is about 60kg, 1m long 0.4 m wide and 0.5 high. Cost is difficult but ...
by galderdi
Feb 28 2019 7:42pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

I always figure you've got to be going pretty hard to get a good car racing photo. With motorcycles you can look well 'ard while barely getting a knee down :) Seems to be running very reliably for you now? Yes thanks. It is quite good. At first I thought the new hydraulic handbrake was a bust. But ...
by galderdi
Feb 27 2019 8:18pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Here are a couple of photos from my last event on the weekend
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by galderdi
Feb 19 2019 10:21pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 42569

Re: Aussie EV Autocross Special

Here is the latest look at the car
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by galderdi
Feb 06 2019 8:19pm
Forum: Large EV General Discussion
Topic: Crazy Trike concept, need some help/advice
Replies: 3
Views: 1620

Re: Crazy Trike concept, need some help/advice

Can you throw some rough sketches up so we can get an idea of this thing?