Search found 2975 matches

by jonescg
Thu, 13 Jan 2011, 01:07
Forum: EV Racing
Topic: E-Formula Extreme - Sydney presentation
Replies: 64
Views: 11214

E-Formula Extreme - Sydney presentation

Any word on registrations for the Australian round yet??
by jonescg
Mon, 10 Jan 2011, 04:39
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30464

Voltron, the Electric RG!

I can measure a decent (reliable) current on the battery positive before the contactor, but after the contactor I'm getting crazy currents because that's where armature positive heads over to the motors... But hurrah!! Woohoo! I am THIS >< close to finishing the bike! http://forums.aeva.asn.au/smile...
by jonescg
Sat, 08 Jan 2011, 20:00
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30464

Voltron, the Electric RG!

Hehe, it's cause disconnecting the battery +ve is a royal PITA. No, the spark happened while doing some testing. All good - the motors spin up like they are supposed to. I had to change a few settings on the Controller. All good now http://forums.aeva.asn.au/smileys/smiley2.gif However, I'm finding ...
by jonescg
Sat, 08 Jan 2011, 17:32
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30464

Voltron, the Electric RG!

J2 lead 2 is -ve 24 V into the controller. The 24 V out is referring to the 12/24 V converter. I have thought long and hard about it, but the risk of doing something silly like attempting to ride off in precharge mode, or something like it is too high. The controller effectively opens the relay, whi...
by jonescg
Wed, 05 Jan 2011, 01:02
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30464

Voltron, the Electric RG!

Here is the new and improved ignition diagram. It leaves the precharge resistor in place, since it probably only draws a significant load as the capacitors charge up, but not a lot thereafter. It also allows for monitoring of the current in with the CA (which is turned on by a switch on the dashboar...
by jonescg
Tue, 04 Jan 2011, 19:53
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30464

Voltron, the Electric RG!

M- cables are identical. M+ cables vary by about 30 cm. Hope this doesn't make a huge difference. I guess I won't know till I can put a current clamp on each side.
by jonescg
Tue, 04 Jan 2011, 15:55
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30464

Voltron, the Electric RG!

That's a good thought Ken, I don't know what all of the options are for the Kelly controller, but if it cuts the throttle signal until the caps are properly charged it might be worth using the in-build system instead.
by jonescg
Tue, 04 Jan 2011, 05:22
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30464

Voltron, the Electric RG!

Hi all, I have come up with this schematic for turning on the CA at the same time as the BMS and currently, the 12-24 V converter. Unfortunately the 3 position ignition switch probably only completes the precharge circuit while it's in that position, but when it's moved to ON (contactor circuit) it ...
by jonescg
Mon, 03 Jan 2011, 21:12
Forum: EV Racing
Topic: E-Formula Extreme - Sydney presentation
Replies: 64
Views: 11214

E-Formula Extreme - Sydney presentation

I see there was a TTX75 rule change allowing 7.5 kWh bikes to be as porky as the open classes (250 kg). If I'd have known that I could have started with a 600 cc chassis and a massive motor! Oh well, I have a light bike, and that should put me at some advantage.
by jonescg
Fri, 31 Dec 2010, 19:54
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30464

Voltron, the Electric RG!

It could easily be on the positive too. Just how I drew it late at night with MS Paint http://forums.aeva.asn.au/smileys/smiley1.gif . Yes, only training will stop a noob from belting right through to on. I can't think how else you might stop this, but it's better than any previous circuits I've com...
by jonescg
Fri, 31 Dec 2010, 16:39
Forum: Members Machines
Topic: Voltron, the Electric RG!
Replies: 142
Views: 30464

Voltron, the Electric RG!

Thinking about the ignition wiring... The off-ACC-on switch may or may not keep the ACC circuit on. Not that it matters for pre-charging the caps, because they will hold their charge for as long as it takes to break the precharge circuit and complete the contactor circuit. But still, I'm wondering i...
by jonescg
Tue, 28 Dec 2010, 05:26
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16286

200mph what to use AC or DC??

I still think the 'Busa is ugly Image
by jonescg
Mon, 27 Dec 2010, 16:44
Forum: Scooters, mopeds and electric toys
Topic: Katherine's ebike
Replies: 4
Views: 2035

Katherine's ebike

No, it would need to be unplugged every time it's idle. I suspect that the 100 ohm resistor was too low for this application. Even on my electric motorbike it's a 2000 ohm resistor. Might need to pick up an alternative at Jaycar...
by jonescg
Mon, 27 Dec 2010, 06:02
Forum: Scooters, mopeds and electric toys
Topic: Katherine's ebike
Replies: 4
Views: 2035

Katherine's ebike

Hi all! Well the House of Kat and Chris is now home to another electric vehicle. Kat has been riding 11 km to work and 11 km home most days on her pushbike, and while it's not too bad, on a day like yesterday when it's 39'C it's not much fun. So we ordered an e-bike kit from cell_man at emissionsfre...
by jonescg
Fri, 24 Dec 2010, 17:06
Forum: Members Machines
Topic: My TZR 250 EV project
Replies: 94
Views: 25015

My TZR 250 EV project

That's a lot of ally! Top quality welding, I gotta say!
by jonescg
Fri, 24 Dec 2010, 17:02
Forum: EV Racing
Topic: E-Formula Extreme - Sydney presentation
Replies: 64
Views: 11214

E-Formula Extreme - Sydney presentation

Yeah, I'm well in the Formula75 class. Only got 6.2 kWh onboard. I can't afford much more than that Image
by jonescg
Thu, 23 Dec 2010, 22:05
Forum: EV Racing
Topic: E-Formula Extreme - Sydney presentation
Replies: 64
Views: 11214

E-Formula Extreme - Sydney presentation

I was about to post that Image

So I will be seeing you on the track then Mr Catavolt! Image
by jonescg
Wed, 22 Dec 2010, 23:49
Forum: EV Racing
Topic: 200mph what to use AC or DC??
Replies: 109
Views: 16286

200mph what to use AC or DC??

I'm with Richo. Go for those NanoTech 90 C LiPos. You should be able to fit 10 kWh on the bike somehow.
by jonescg
Wed, 22 Dec 2010, 19:11
Forum: Batteries, charging, management and monitoring
Topic: Using an EV to power things.
Replies: 9
Views: 1374

Using an EV to power things.

But once it works, you can drive up to a public outlet, charge the car, drive home and run the house. Repeat until you get arrested for stealing electricity Image
by jonescg
Tue, 21 Dec 2010, 19:41
Forum: Electric motors and controllers
Topic: DC loads...
Replies: 5
Views: 1099

DC loads...

Yeah, I normally push old stuff out when I learn new stuff :) I measured the resistance of the kettle and it was 25 ohms. At 106 V that gives a current of 4.24 amps. It might have been higher at first, but I wasn't paying too much attention. Not that it matters now, the Cycle Analyst screen won't di...
by jonescg
Mon, 20 Dec 2010, 20:26
Forum: Electric motors and controllers
Topic: DC loads...
Replies: 5
Views: 1099

DC loads...

Thanks for explaining that Johny Image

(I am a bit of an electrical simpleton for the simplest of things)
by jonescg
Mon, 20 Dec 2010, 20:01
Forum: Electric motors and controllers
Topic: DC loads...
Replies: 5
Views: 1099

DC loads...

Hi all, I was testing my cycle analyst on the weekend to ensure that it's working properly. My pack voltage was 106 V, so I put a 2400 Watt, 240 Volt AC kettle on as a load. The CA read a 5.8 A draw. Now, 5.8 A x 106 V equals about 615 W. Hmmmm. Why the difference? I would have thought that at less ...
by jonescg
Fri, 10 Dec 2010, 17:57
Forum: EV Racing
Topic: E-Formula Extreme - Sydney presentation
Replies: 64
Views: 11214

E-Formula Extreme - Sydney presentation

And I just got word from the MCRCWA that I can race with them if I like: "Hi Chris, The committee agreed to allow you to run your bike at our meetings with the modern bikes, you and your bike will need to go through scrutineering and be race prepared as per Manual of motorcycle sport. You will need ...
by jonescg
Thu, 09 Dec 2010, 17:49
Forum: Batteries, charging, management and monitoring
Topic: Questions on Elcon/TC chargers
Replies: 95
Views: 23508

Questions on Elcon/TC chargers

Let me know how you go Matt. Not that I plan on hacking mine just yet, but something to keep in mind.
by jonescg
Wed, 08 Dec 2010, 18:06
Forum: Batteries, charging, management and monitoring
Topic: Questions on Elcon/TC chargers
Replies: 95
Views: 23508

Questions on Elcon/TC chargers

Hmm, thanks for the insight Coulomb. I know there are different algorithms available, but the whole thing is a sealed unit, so I'm not sure how you would change it. There is no serial port either. How do these chargers work anyway? Surely if the maximum output is X volts, then the pack, connected in...