Search found 552 matches

by Peter C in Canberra
Sat, 09 Nov 2013, 03:24
Forum: Holden/Chev Volt
Topic: holden EVSE = $350 on website
Replies: 19
Views: 6656

holden EVSE = $350 on website

I'm not sure from the mentions of this EVSE whether it pulls 10A or 6A from the wall when used with an iMiEV, or if there is some way to select how much power it takes. Is the 10A what it takes if an iMiEV says it wants that much but a volt only asks for 6A?
by Peter C in Canberra
Sat, 09 Nov 2013, 02:31
Forum: General EV Discussion
Topic: Help with drop in Torque
Replies: 13
Views: 1906

Help with drop in Torque

My Kelly that was a huge step up in performance from the Curtis cost $1400 from EV Works. $1000 cheaper and way, way better. You won't believe the performance you have. I thought the battery or motor (same as yours) were the performance limit but it was the Curtis controller. The thing to be aware o...
by Peter C in Canberra
Fri, 08 Nov 2013, 20:59
Forum: General EV Discussion
Topic: Help with drop in Torque
Replies: 13
Views: 1906

Help with drop in Torque

I had exactly this issue with the same motor and controller. At speed the controller seemed to work fine but it took a bit less current and produced less torque when starting out. It seemed to be gradually getting worse. I used a clamp meter on the motor lead and saw that flat out I could not get mo...
by Peter C in Canberra
Wed, 06 Nov 2013, 00:03
Forum: Technical and conversion discussion
Topic: 144V DC DC converters
Replies: 12
Views: 2461

144V DC DC converters

I got the 90Amp, US mains version Iota 5 years and 40,000km ago and it is still going just fine on nominal 144VDC. I put it in a corner of the engine bay that would be well protected.
90Amp is more than you need unless you are running a 12V heater, which I am.
by Peter C in Canberra
Tue, 05 Nov 2013, 19:53
Forum: Mitsubishi
Topic: Good 2nd hand deal
Replies: 16
Views: 2550

Good 2nd hand deal

acmotor wrote: Hey Peter, can you define those 'recycled electrons' in your signature ?   Image

I expect many of the same ones used last time I drove the car have been pushed back to the other side of the battery during charging to be used all over again!
by Peter C in Canberra
Tue, 05 Nov 2013, 16:59
Forum: Mitsubishi
Topic: Good 2nd hand deal
Replies: 16
Views: 2550

Good 2nd hand deal

The 34 on carsales was down to 32 when I looked a couple of weeks ago and now down to 28 since I signed the contract to buy one yesterday. Mine (demo, white, MY12, with sat nav, built 6/2011, 3850km) was listed at $29990 but the presence of another nearby listed at $24990 got that price matched. Som...
by Peter C in Canberra
Wed, 07 Aug 2013, 15:34
Forum: Technical and conversion discussion
Topic: Vacuum tanks
Replies: 4
Views: 1299

Vacuum tanks

I spent a while thinking about vacuum bottles of various sorts but then decided not to bother after some further reading. The brake booster as it is has a litre or two of capacity already. My brakes and MES-DEA vacuum pump have been working just fine for over 4 years and 40,000km.
by Peter C in Canberra
Wed, 07 Aug 2013, 14:53
Forum: Holden/Chev Volt
Topic: Only 2 Holden volts on carsales.com.au
Replies: 3
Views: 1201

Only 2 Holden volts on carsales.com.au

I wasn't looking, only noticed as I walked by, but a Holden dealer in Canberra had at least 4 Volts in the yard.
by Peter C in Canberra
Wed, 05 Dec 2012, 16:26
Forum: Technical and conversion discussion
Topic: family city car - doable?
Replies: 13
Views: 2552

family city car - doable?

My 5dr charade meets those criteria which were much like yours. I have seat belts for three in the back and accommodate up to three teenagers in the rear on occasions. My range is about 70km with 45x90AH battery. Performance is very good. I have the original air con running off the motor accessory s...
by Peter C in Canberra
Wed, 05 Dec 2012, 16:18
Forum: Technical and conversion discussion
Topic: Clutch slip issue
Replies: 4
Views: 1252

Clutch slip issue

For my conversion I left the clutch out and generally use only 3rd gear. Occasionally changing to 4th for sustained high speed (90+kph. If the motor is just left with no load with a foot off the accelerator it should be OK to have a clutch. The commercial cars with regen like to have regen controlle...
by Peter C in Canberra
Thu, 29 Dec 2011, 14:51
Forum: Electric motors and controllers
Topic: speed control versus torque control
Replies: 19
Views: 5686

speed control versus torque control

I have a plain old series DC motor with a Kelly controller. It can do speed (voltage) control, torque (current) control or something it calls 'balanced' mode. Kelly were not very helpful when I asked what that actually means. Without bothering to try the other modes I went for balanced. It feels lik...
by Peter C in Canberra
Sun, 17 Jul 2011, 20:14
Forum: Batteries, charging, management and monitoring
Topic: "Winter effect" or dying cell?
Replies: 17
Views: 2791

"Winter effect" or dying cell?

So the specific power (seen as acceleration) reduces with temperature and the specific energy (seen as range) remains the same ? or does the specific energy reduce as well ? Thinking internal resistance increases with dropping temperature but so does available current so these two balance ? edit: I...
by Peter C in Canberra
Tue, 12 Jul 2011, 05:08
Forum: Batteries, charging, management and monitoring
Topic: "Winter effect" or dying cell?
Replies: 17
Views: 2791

"Winter effect" or dying cell?

My TS90 cells in my car in Canberra certainly sag more in Winter. These cells are in their 3rd winter. The EVpower BMS alarm typically sounds at around 220A (a bit over 2C) when temperatures have been below zero overnight and under 10 by day.The car spends the night in an open sided carport. I get 3...
by Peter C in Canberra
Sun, 26 Jun 2011, 05:14
Forum: Technical and conversion discussion
Topic: Electric heater
Replies: 16
Views: 4920

Electric heater

...I am interested in your seat heaters. I just looked on ebay and there are heaps to choose from, however none of them seem to have a power rating. Can you let me know which ones you ended up getting.... Often they give the current rather than power but that is not a difficult sum to work out. Min...
by Peter C in Canberra
Fri, 24 Jun 2011, 14:50
Forum: For Sale/Wanted
Topic: Curtis 1231C Controller for sale
Replies: 3
Views: 628

Curtis 1231C Controller for sale

The controller is sold.
Thanks,
Peter C.
by Peter C in Canberra
Sun, 12 Jun 2011, 20:39
Forum: Electric motors and controllers
Topic: Faulty Curtis
Replies: 4
Views: 1472

Faulty Curtis

I had a similar dilemma recently. My Curtis is still working, just not as well as original. If you wanted to make an offer you could buy some time by using it while working out what to do. Check my for sale post. It links to a US site that refurbishes these controllers for half the price of a new on...
by Peter C in Canberra
Sun, 12 Jun 2011, 05:00
Forum: For Sale/Wanted
Topic: Curtis 1231C Controller for sale
Replies: 3
Views: 628

Curtis 1231C Controller for sale

Hi, My Curtis controller is for sale. Best offer. Note it is not 100% perfect. I have described its problem in another thread on this forum (http://forums.aeva.asn.au/viewtopic.php?t=2499). It is rated for 144V and 500A but I was only measuring a bit over 400A and the symptom was a noticeable loss o...
by Peter C in Canberra
Sun, 29 May 2011, 18:10
Forum: Electric motors and controllers
Topic: ADC/Curtis-reduced torque at start up?
Replies: 21
Views: 5438

ADC/Curtis-reduced torque at start up?

I assume there are some things that are relatively simple to fix that can go wrong because I found several places on line in the US who will sell you a refurbished Curtis then you send them your dead/damaged one. I think I will try to sell mine now (acknowledging the history above) since someone cou...
by Peter C in Canberra
Sun, 29 May 2011, 04:44
Forum: Electric motors and controllers
Topic: ADC/Curtis-reduced torque at start up?
Replies: 21
Views: 5438

ADC/Curtis-reduced torque at start up?

A further update: I bit the bullet and bought a Kelly KDH14100D from EV Works. I programmed it to limit the motor current to 800A and the battery side to 270A (3C for my 90AH Thunderskys). I have an 8" ADC motor which is supposed to only be rated for 120V so I limited the motor voltage to 120V also....
by Peter C in Canberra
Tue, 17 May 2011, 01:15
Forum: Electric motors and controllers
Topic: Faulty ZAPI
Replies: 8
Views: 2175

Faulty ZAPI

I have just ordered a Kelly. An attractive feature is that you can program in both motor and battery side current limits. It allows the possibility to use a controller that might be a bit over-spec'd for the motor or battery and then limit it and thereby run it conservatively.
by Peter C in Canberra
Tue, 17 May 2011, 01:08
Forum: Electric motors and controllers
Topic: ADC/Curtis-reduced torque at start up?
Replies: 21
Views: 5438

ADC/Curtis-reduced torque at start up?

An update: I borrowed a clamp meter which let me record the maximum DC through one of the motor leads. So, I kept resetting and then driving a short distance, then stopping to check the maximum seen. The experiment results were not quite as conclusive as I would have liked but I have ordered a Kelly...
by Peter C in Canberra
Fri, 29 Apr 2011, 04:14
Forum: Technical and conversion discussion
Topic: synthetic transmission oil-educate me!
Replies: 22
Views: 6051

synthetic transmission oil-educate me!

Alex_Brooy wrote: may be offtopic, but
Peter, how much km did you covered on your TS-LFP batteries?

20,000km in two years so far. No sign yet that they are behaving any differently from new. I hope for many more years.
by Peter C in Canberra
Fri, 29 Apr 2011, 04:04
Forum: Electric motors and controllers
Topic: ADC/Curtis-reduced torque at start up?
Replies: 21
Views: 5438

ADC/Curtis-reduced torque at start up?

Thanks for the comments. The surging issue I had in 2009 did turn out to be fixed by a new potentiometer in the pot box. The replacement has been good for 18 months or so. The low torque at low speed is a different issue. I am considering a new controller, either the ZEVA 600A controller or an open ...
by Peter C in Canberra
Mon, 25 Apr 2011, 00:26
Forum: Electric motors and controllers
Topic: ADC/Curtis-reduced torque at start up?
Replies: 21
Views: 5438

ADC/Curtis-reduced torque at start up?

It's plausible. The caps in the Curtis aren't rated for anywhere near 500A ripple, so they heat up and wear out. You would think there might be a cottage industry somewhere refurbishing Curtis controllers with new caps if it was so predictable that they would wear out, even upgrading with higher sp...
by Peter C in Canberra
Sun, 24 Apr 2011, 21:07
Forum: Electric motors and controllers
Topic: ADC/Curtis-reduced torque at start up?
Replies: 21
Views: 5438

ADC/Curtis-reduced torque at start up?

Interesting. I guess a test of your hypotheis might be to install a suitable capacitor close to the controller. If you are correct and the in-built capacitor(s) are not functioning but open circuit I should restore their function. Is your suggestion based on anyone confirming this as a common failur...