AEVA Forums

Sorry I couldn't make it 13/2/09, I ended up helping with the bushfire relief instead.
Let me know when the next will be please.

Edit; Oh I see the patern now, second friday of each month, so March 13 then?

I'll have to do a bit of research on diff ratios in Mazda 1500s now, and hopfully find gear ratios too. "Hub motors would be ok if you could put up with the unsprung weight." I'm a little confused on this matter, in my mind the weight is removed from the suspended vehicle and put directly on the roa...

Ok, so the benefits of a diff exceed the weight and loss of power.
Especially if it means you don't need a bigger motor or battery pack right? Does the same go for the geerbox?

Hey does anyone know if anyone has tried putting an electric motor (or 2) between the axles of a car with an independant rear end, eliminating the diff and it's mechanical resistance. How might weaccount for the wheels turning at different speeds in corners if there were only on motor?

Why oh why am I writing this reply?? Fatigue I think. Considdering the high joule energy output, and it's need for no oils, it's pavlova that wins hands down. There goes any cred I may have had! Thanks for that link Richo, just the sort of info I needed. The 203-06-4001 looks loke the sort of thing ...

Thanks, will do soon.

Hi Lauchlan, I'm in the process of considdering an ev conversion for an old Mazda as part of a resto/update could I meet up with you sometime?

Looking at a few light-mid sized conversions a popular combination that shows decent results as far as performance and range as well as reasonable price goes as follows. Advanced DC Fb4001a series wound with Curtis 1231c Controller on 144v Lithium battery pack running through origional manual geerbo...

Thanks for the plain english versions guys, much apreciated! I will still have to read them a few times before it all sinks in still. I'm still a long way from deciding what is the most appropriate set up for me. I think I'll cheat a bit and check out evalbum and the members garage and see what work...

O.K. If I were to get an old industrial motor rewound or configured for 150v (or 110) 3 Phase, where would i need to look for a controller? do they exist or will it just be cheaper to set up for 600V?

I had to read that a couple of times Richo, but i think i get it now. DC 144 volts would require 45 bigger lithium batteries or 12 car batteries. AC600v would take 188 (mini)lithium batteries or 50 (motorbike) batteries.
lead for lead or lithium for lithium you would get the same amount of amp hours.

600v does't sound right to me. As I understand that would be 50x12v or 200x3v LFP's either of which would be both inpractical and unaffordable.
Somone set me straight here please.

Ok so what will i need to look for to identfy the motor that will do the Job I want. Assuming I am looking at 20kw 3 phase motor, what are the other clues that I will find in adverts etc. that will let me know that I am onto the right thing?

Then there is this, Is that a controller on top or just a big J box
Item number: 260355415660

O.K. then, time for me to really show my ignorance. All this talk of kilowatts, amps, inches, hertz, horsepower etc. is doing my head in. I'm afraid that I am one of those people that learn by seeing and doing rather than crunching a whole lot of number crunching and calculating. To add to the confu...

So let me see if i get this right, DC is cheap to build, but gives the performance of a golf cart. If I want any sort of street cred. i will need to go for a mid-large sized AC set up (gearbox optional)

My interest in regen comes from the 69 model Mazda 1500 i want to convert only having "stomp harder" brakes (drums/no vac.assist)and me not wanting to have the whole front end re engineered, so a braking resistor may be looking cheap. Hey I won't need a vacuum pump either. Looks like I might be look...

Not having done a lot of research an prices yet, might it be worth doorknocking a few elec. motor rewind joints to look for "lost treasure" in the form of an industrial motor to do the job, or do we inherit a whole lot of problems when we move away from the purpose built jobbies.

"Inverter losses are around 98%".Im sure you mean approx 2% right?
The other thing I have no knowledge of , but would like to know more about is regenerative braking. It is stated above that you need to run AC, what else do you need? Is it worth the extra expense??

Another newbie here, trying to get my head around the whole ac/dc thing myself. How do you get ac current from a battery pack? If an inverter is used, what loss of power is involved in the process? Is a bigger motor better if it fits (or will it just draw more power than it needs eaven whist coastin...

Newbie here, when and where is the feb meeting????