Search found 18 matches

by Martin
Sun, 13 Sep 2009, 05:13
Forum: Electric motors and controllers
Topic: Ananda Motors
Replies: 8
Views: 1967

Ananda Motors

Agree on the hub motors and caps... one day.

http://www.youtube.com/watch?v=gnUGvfCkvbk

Well, caps one day, hub motors now.
by Martin
Sun, 13 Sep 2009, 04:56
Forum: Electric motors and controllers
Topic: AC motors magnetic saturation etc
Replies: 5
Views: 1595

AC motors magnetic saturation etc

Seeing how the topic was saturation, hopefully this is relevant... Some say an AC motor won't react badly to using a higher voltage than it is rated at, While others say the extra voltage will be wasted as the rotor can only handle so much induced magnetism. At least with brushed DC it was only spar...
by Martin
Sun, 13 Sep 2009, 04:28
Forum: Technical and conversion discussion
Topic: Effect of keeping clutch on Electric motor
Replies: 4
Views: 1026

Effect of keeping clutch on Electric motor

Thanks acmotor, the difference between 500 and 20kg is considerable, so I'll check what the thrust bearing is capable of and hopefully keep the clutch assembly. Of course you're right about not needing the inertia of the flywheel, but I may leave it alone to save time for now. I haven't viewed the s...
by Martin
Sat, 12 Sep 2009, 04:43
Forum: Technical and conversion discussion
Topic: Effect of keeping clutch on Electric motor
Replies: 4
Views: 1026

Effect of keeping clutch on Electric motor

While checking the adapter plate requirements for a conversion which was intending to keep the clutch, it became obvious that the pressure delivered 'lengthways' from the thrust bearing (~500kg), is eventually forced up against the flywheel. Thankfully in an ICE the flywheel is bolted to the cranksh...
by Martin
Sat, 12 Sep 2009, 04:17
Forum: For Sale/Wanted
Topic: Optima Yellow Top D31A
Replies: 7
Views: 742

Optima Yellow Top D31A

Hello again,

On the off chance those 3 are still clogging up valuable room in your garage, I think I have a possible freight method...

(If you have any optimas left that is)

Let me know anyway,

Thanks.
by Martin
Thu, 13 Aug 2009, 02:39
Forum: General EV Discussion
Topic: The ultimate "EV"
Replies: 8
Views: 1171

The ultimate "EV"

OK, drool!
That's a cool effort, now who knows what motor they're using?

2kg @ 10kW is not too shabby, could it be a little brusa or similar?


by Martin
Sun, 02 Aug 2009, 02:58
Forum: For Sale/Wanted
Topic: Optima Yellow Top D31A
Replies: 7
Views: 742

Optima Yellow Top D31A

Hello David,

Were any of your buyers from interstate?

I've had good and bad experiences with couriers, batteries and borders.

If you have a method that worked to get batteries to Melbourne, I'd be interested.

Martin.
by Martin
Sat, 01 Aug 2009, 19:27
Forum: Members Machines
Topic: Toyota Tercel EV conversion
Replies: 3
Views: 1368

Toyota Tercel EV conversion

Hello Ribbit, I picked up a Tercel for a conversion, until I realised it's limited GVM etc... The batteries were going to fit in the back of the wagon area, but that wasn't as good as centering all that weight between the front and rear axles. I wasn't worried about the looks of the Tercel at first,...
by Martin
Sat, 01 Aug 2009, 16:12
Forum: For Sale/Wanted
Topic: Optima Yellow Top D31A
Replies: 7
Views: 742

Optima Yellow Top D31A

Hello David,

Now it's August, have you any D31s left?

I'm in Melbourne, so there's the problematic problem to negotiate...

Martin.
by Martin
Sun, 26 Apr 2009, 03:26
Forum: Technical and conversion discussion
Topic: Soapbox on regenerative braking
Replies: 278
Views: 30436

Soapbox on regenerative braking

I have to agree with acmotor, drive a prius and enjoy the braking without brakes... Preferably regen comes on with first 1/2 of the brake pedal, not when the accelerator is backed off. The ac controller apparently is suitable for regen, I'm hoping in a brushless dc set up - the motor produces a high...
by Martin
Sun, 26 Apr 2009, 03:17
Forum: Batteries, charging, management and monitoring
Topic: Ponilion's LiFePo4,5-33C LiPolymer battery
Replies: 118
Views: 18375

Ponilion's LiFePo4,5-33C LiPolymer battery

Are the BYD batteries in the ballpark pricewise?

As usual, getting details is a grey area.

http://www.auto88.cz/forum/showthread.php?t=13
by Martin
Sat, 25 Apr 2009, 18:39
Forum: Batteries, charging, management and monitoring
Topic: Ponilion's LiFePo4,5-33C LiPolymer battery
Replies: 118
Views: 18375

Ponilion's LiFePo4,5-33C LiPolymer battery

There seems to be something resembling the TS lithiums in a blue colour at http://batteryshow.en.ecplaza.net/1.asp

I had the same problem landing at the ponilion site, but this one had their products anyway.

Still waiting to hear on specs, (& prices).
by Martin
Tue, 21 Apr 2009, 20:34
Forum: Electric motors and controllers
Topic: Prius motor voltage
Replies: 5
Views: 1333

Prius motor voltage

So it is worthwhile going to all this trouble to supply a motor with a higher voltage than the battery pack can provide on its own.

Any chance of a reference to the buck/boost process for a better understanding? (if it's not available commercially anywhere)
by Martin
Tue, 21 Apr 2009, 05:06
Forum: Electric motors and controllers
Topic: Prius motor voltage
Replies: 5
Views: 1333

Prius motor voltage

Ok, is there more to it than using electronics to add to the +200 supply already available by using a reversed -200v from the same battery pack? (I realise that still only comes to 400ish volts...)

(And is this method used in other available controllers?)
by Martin
Tue, 21 Apr 2009, 03:06
Forum: Electric motors and controllers
Topic: Prius motor voltage
Replies: 5
Views: 1333

Prius motor voltage

Looking at the last three prius battery/motor voltage sets, the battery has crept down from 288v (ish) to 240v (ish) to just over 200volts. Meanwhile, the motor in the third (200ish volt) version is rated to 500 volts. Considering for a given power rating, voltage is the way to go over amps, how hav...
by Martin
Mon, 17 Nov 2008, 04:17
Forum: Technical and conversion discussion
Topic: Automatic EV
Replies: 5
Views: 993

Automatic EV

Just a simple suzuki auto

(Mighty boy seemed most suited for conversion - just happened to get an auto)
by Martin
Sun, 16 Nov 2008, 04:19
Forum: Technical and conversion discussion
Topic: 199W conversion for no rego
Replies: 26
Views: 5276

199W conversion for no rego

The 200 watt limit is a tease, but hardly worth getting excited about.

The authorities would probably prefer to have everything registered, but those oldies in their electric wheelchairs are still allowed to vote!
by Martin
Sun, 16 Nov 2008, 03:57
Forum: Technical and conversion discussion
Topic: Automatic EV
Replies: 5
Views: 993

Automatic EV

The auto I'm running behaves itself without a motor constantly running for the auto fluid.

The only thing is a slight delay when swapping from Drive to Reverse    (& visa versa), but even that is only a 'hesitation'.