Search found 494 matches

by Peter C in Canberra
Fri, 25 Feb 2011, 18:35
Forum: Technical and conversion discussion
Topic: Poor Man's Regen. air con.
Replies: 20
Views: 2835

Poor Man's Regen. air con.

From what I know about airconditioners, the braking from them would be fairly consistent? Or does it cycle on and off while in operation? It provides noticable but not strong drag. It's most useful when I find myself slightly over the speed limit on a long hill in summer. I can just touch the brake...
by Peter C in Canberra
Tue, 22 Feb 2011, 21:55
Forum: Electric motors and controllers
Topic: ADC/Curtis-reduced torque at start up?
Replies: 21
Views: 4937

ADC/Curtis-reduced torque at start up?

But hopefully others will suggest something much cheaper and simpler that you can try first. Clean Motor Brushes Ah! Now that's a plausible and appealing option I had not thought of. I guess I had just assumed they were sort of self-cleaning as they rub on the spinning bit (technical term, sorry), ...
by Peter C in Canberra
Tue, 22 Feb 2011, 03:40
Forum: Electric motors and controllers
Topic: ADC/Curtis-reduced torque at start up?
Replies: 21
Views: 4937

ADC/Curtis-reduced torque at start up?

Hi, My car has been going just fine for nearly two years with ADC 8" motor and Curtis 144V/500A controller. The ramping rate and current limits are and have always been fully clockwise-maximum. Lately I have been feeling that the car just doesn't quite have the torque it used to have at low speed/lo...
by Peter C in Canberra
Sat, 08 Jan 2011, 18:22
Forum: Technical and conversion discussion
Topic: Poor Man's Regen. air con.
Replies: 20
Views: 2835

Poor Man's Regen. air con.

To harvest a useful fraction of the waste heat from the controller, I think you would have to insulate it so it can only lose heat via the water cooling system. Otherwise I don't think you would get anything like the 500W mentioned above into the cabin. By comparison none of that is required for the...
by Peter C in Canberra
Fri, 07 Jan 2011, 11:40
Forum: Technical and conversion discussion
Topic: Poor Man's Regen. air con.
Replies: 20
Views: 2835

Poor Man's Regen. air con.

Yes, icing up had been a worry I had about whether to try the reverse cycle idea. On the other hand it appeals to add to the barely adequate resistive heater I have. I am a bit worried about going too far out on a limb with that. How many others have done it? I think there is an issue with changing ...
by Peter C in Canberra
Thu, 06 Jan 2011, 04:03
Forum: Technical and conversion discussion
Topic: Poor Man's Regen. air con.
Replies: 20
Views: 2835

Poor Man's Regen. air con.

Good project Peter ! Did you say it was reverse cycle aircond ? with the evworks r/c valve modification ? I'm thinking of the winter heating option with r/c as it is 3 x as energy efficient as the direct electric heating. That would make the 'regen' an all round package. Thanks, no it isn't reverse...
by Peter C in Canberra
Wed, 05 Jan 2011, 01:35
Forum: Technical and conversion discussion
Topic: Poor Man's Regen. air con.
Replies: 20
Views: 2835

Poor Man's Regen. air con.

This is to report an idea I tried which has worked out well. My car has an ordinary ADC series DC motor, curtis controller etc. Regen is not easy to arrange as discussed elsewhere. The air conditioning that was originally in the car has been reinstated running on a pulley on the shaft on the back en...
by Peter C in Canberra
Mon, 03 Jan 2011, 04:45
Forum: Technical and conversion discussion
Topic: Idle power
Replies: 19
Views: 2228

Idle power

Mine draws ~100mA from 144V whether in Off, Acc or On if the accelerator, radio, lights, brake vacuum pump etc are all off. That residue is the Dc/dc converter idling current that is always on and a few 12V loads that are always present: clock, keyless entry, some tiny lights in the power window swi...
by Peter C in Canberra
Mon, 03 Jan 2011, 04:24
Forum: Technical and conversion discussion
Topic: Electric heater
Replies: 16
Views: 4447

Electric heater

I found that my 900W electric resistance heater is barely up to the task of a Canberra winter night. On the other hand I got a kit from Ebay for a pair of car seat heaters for about $150. They consume only 45W/seat with safe 12V and are far more effective as heaters for much less battery drain. Of c...
by Peter C in Canberra
Thu, 07 Oct 2010, 15:35
Forum: Technical and conversion discussion
Topic: Help diagnose Curtis/ADC fault please
Replies: 19
Views: 2421

Help diagnose Curtis/ADC fault please

The motor was the problem. No idea why. The car is now going again with a new 8" motor without changing anything else. When the old motor came out it still didn't go with 12V but no obvious damage.
by Peter C in Canberra
Mon, 30 Aug 2010, 04:24
Forum: Technical and conversion discussion
Topic: Help diagnose Curtis/ADC fault please
Replies: 19
Views: 2421

Help diagnose Curtis/ADC fault please

do you have any photos of the setup? I'm assuming that the motor has the usual 4 terminal posts, and two of them will be connected together, leaving the other two to go to the battery / controller. If it's not turning at all but it drawing current at 12v a brush problem or internal wiring issue see...
by Peter C in Canberra
Mon, 30 Aug 2010, 03:11
Forum: Technical and conversion discussion
Topic: Help diagnose Curtis/ADC fault please
Replies: 19
Views: 2421

Help diagnose Curtis/ADC fault please

With the wheels off the ground, controller disconnected, 12V applied there is certainly current because we got a significant spark on connecting the battery. There was no movement from the motor at all-quickly disconnected. This was repeated in neutral and in gear but the motor did not move. I could...
by Peter C in Canberra
Tue, 24 Aug 2010, 04:08
Forum: The Lounge
Topic: emissions trading / carbon trading
Replies: 94
Views: 11829

emissions trading / carbon trading

But, seriously, what do you think of my same-sex marriage solution? I put this concept to 11 politicians, and recieved 11 different answers! I wouldn't call it a 100% solution for those same sex couples who want to use the word 'marriage' but it would go a long way I expect for the word 'spouse' to...
by Peter C in Canberra
Tue, 24 Aug 2010, 03:06
Forum: Technical and conversion discussion
Topic: Help diagnose Curtis/ADC fault please
Replies: 19
Views: 2421

Help diagnose Curtis/ADC fault please

Warning !!: If you do put 12v across the motor, make sure the controller is disconnected from the motor. If you don't the freewheel diodes will conduct and burn out *really* quickly and you definately will need a new controller. Matt Ah. that could have been a trap for young players! I could have t...
by Peter C in Canberra
Mon, 23 Aug 2010, 23:58
Forum: The Lounge
Topic: emissions trading / carbon trading
Replies: 94
Views: 11829

emissions trading / carbon trading

............It's a small point but I often receive letters, signed but omitting the gender prefix. Very, PC , but in the case of some names, very difficult to reply, as the first name (or initial) doesn't clearly denote gender. Fine for emails, where you can just put the first name, (or none), but ...
by Peter C in Canberra
Mon, 23 Aug 2010, 23:04
Forum: The Lounge
Topic: emissions trading / carbon trading
Replies: 94
Views: 11829

emissions trading / carbon trading

SSM=same sex marriage. Apparently some people feel their heterosexual relationships are undermined by other people's homosexual relationships. Personally I can't see how my heterosexual marriage is threatened or devalued by someone else's homosexual marriage. Perhaps, we are straying a little off to...
by Peter C in Canberra
Mon, 23 Aug 2010, 15:21
Forum: Technical and conversion discussion
Topic: Help diagnose Curtis/ADC fault please
Replies: 19
Views: 2421

Help diagnose Curtis/ADC fault please

Peter, Without the pre-charge resistor in circuit the controller could be damaged because of the inrush current? Just a thought... Eric Perhaps, though it would have to have occurred over some time. The car is second-hand. Having been on the road for 4 years with lead acid it got a LiFePO4 battery ...
by Peter C in Canberra
Mon, 23 Aug 2010, 15:12
Forum: Technical and conversion discussion
Topic: Help diagnose Curtis/ADC fault please
Replies: 19
Views: 2421

Help diagnose Curtis/ADC fault please

My thoughts are a problem with the main contactor or cabling from contactor to Curtis. The small amount of power getting through may be by the pre-charge circuit. Is there another car that you could swap the Curtis and pot-box (separately) from? It would be possible to swap from my car but I trying...
by Peter C in Canberra
Sun, 22 Aug 2010, 20:07
Forum: Technical and conversion discussion
Topic: Help diagnose Curtis/ADC fault please
Replies: 19
Views: 2421

Help diagnose Curtis/ADC fault please

Thanks for those ideas. I think the gearbox must be OK. In a forward gear it seems to try to lurch forwards for that fraction of a second and it tries to go back when I select reverse. However, I have no idea if it was rolled in gear or not. I guess if I can roll it in gear it that will show that ne...
by Peter C in Canberra
Sun, 22 Aug 2010, 18:29
Forum: Technical and conversion discussion
Topic: Help diagnose Curtis/ADC fault please
Replies: 19
Views: 2421

Help diagnose Curtis/ADC fault please

Hi, I am hoping someone can help me diagnose what I think is a motor or controller problem. A member in Canberra has bought a used converted electric car. It has a 120V standard curtis controller and the usual ADC motor. It has been intermittently abruptly conking out on her. Her car has been picked...
by Peter C in Canberra
Sun, 22 Aug 2010, 04:55
Forum: The Lounge
Topic: emissions trading / carbon trading
Replies: 94
Views: 11829

emissions trading / carbon trading

You don't have to be medical doctor to act on reputable medical advice. Similarly, you don't need to be a scientist to accept and act on reputable scientific advice. Actually, over the years, most of 'reputable medical advice' has in hindsight proved to be disastrous! As for 'science' for some time...
by Peter C in Canberra
Sat, 21 Aug 2010, 16:10
Forum: The Lounge
Topic: emissions trading / carbon trading
Replies: 94
Views: 11829

emissions trading / carbon trading

The Greens have a few medical doctors, so I suggest they have some clues on health care, but probably no economists. Just trying to keep the discussion balanced. You don't have to be medical doctor to act on reputable medical advice. Similarly, you don't need to be a scientist to accept and act on ...
by Peter C in Canberra
Fri, 20 Aug 2010, 17:25
Forum: The Lounge
Topic: emissions trading / carbon trading
Replies: 94
Views: 11829

emissions trading / carbon trading

So which politicians actually report being influenced by advice from scientists? A study by the University of Queensland http://www.uq.edu.au/news/?article=21715 "Labor politicians are more influenced by scientists than Liberal/National politicians - 85 per cent of Labor politicians are highly influ...
by Peter C in Canberra
Mon, 16 Aug 2010, 23:22
Forum: The Lounge
Topic: emissions trading / carbon trading
Replies: 94
Views: 11829

emissions trading / carbon trading

So we all agree there is a problem and action of some sort is required. We may debate which action might be the very most effective but we could need to throw everything at this. Whatever might work, we will need to persuade others. All agreed so far? So, which is more persuasive? "I have taken a un...
by Peter C in Canberra
Mon, 16 Aug 2010, 20:18
Forum: General EV Discussion
Topic: EV Conversion Sticker
Replies: 11
Views: 2179

EV Conversion Sticker

Just read that Ontario require any EV conversions to have one of these stickers on the front & back windscreens to alert emergency services that the vehicle is an electric conversion. http://forums.aeva.asn.au/uploads/1105/evc-2in.jpg Although we don't have very many EVs yet, the numbers are slowly...