Search found 494 matches

by Peter C in Canberra
Thu, 11 Jun 2009, 18:47
Forum: Electric motors and controllers
Topic: current limiting on Curtis and TS cells
Replies: 74
Views: 8998

current limiting on Curtis and TS cells

Interesting. That is just where my thinking had been going. I was wondering whether there were cells of modest amp-hour rate and modest cost but distinctly lower internal resistance than my TS90s. For brief bursts of power these could supply a disproportionate amount of power, halfway to having some...
by Peter C in Canberra
Thu, 11 Jun 2009, 16:04
Forum: Electric motors and controllers
Topic: current limiting on Curtis and TS cells
Replies: 74
Views: 8998

current limiting on Curtis and TS cells

Back onto topic... The last few days have had maxima below 10oC and last night was -4 or -5 depending on which radio you listen to. Cars in the open were frost covered. Mine was under a tiled roof with no sides but had no frost. Still it is about as cold as the cells with ever have to cope with. Yes...
by Peter C in Canberra
Thu, 11 Jun 2009, 14:23
Forum: Technical and conversion discussion
Topic: How to feed an original tachometer?
Replies: 35
Views: 6974

How to feed an original tachometer?

Dear All, I am happy to report that the circuit posted above by Evric has been tested in my Charade and works. NB. I have the tacho feed in part only, not the rev limiter part. My original tacho now shows revs which is much nicer looking than a needle that sulks pointing sullenly at the zero. Thank ...
by Peter C in Canberra
Sun, 31 May 2009, 15:51
Forum: Electric motors and controllers
Topic: current limiting on Curtis and TS cells
Replies: 74
Views: 8998

current limiting on Curtis and TS cells

OK, it looks like I am just learning something useful about how these cells vary in performance with temperature. Remind me to report back in a few months time. I have no other option than for the car to be out overnight under a tiled roof carport with no side walls at some distance from any other b...
by Peter C in Canberra
Sat, 30 May 2009, 23:02
Forum: Electric motors and controllers
Topic: current limiting on Curtis and TS cells
Replies: 74
Views: 8998

current limiting on Curtis and TS cells

I run 16 TS040's and I have noticed the when it is 35deg or above, I can yank 170+ amps from them and no little red light on the BMS (same as yours), below 25deg, and I can turn the little red light on at about 100amps. TS cells (in my experience) seems to suffer from the cold. Gow. I think this co...
by Peter C in Canberra
Sat, 30 May 2009, 01:13
Forum: Electric motors and controllers
Topic: current limiting on Curtis and TS cells
Replies: 74
Views: 8998

current limiting on Curtis and TS cells

Thanks for that info. It would make sense that more chemistry will happen when it is hotter. I'll have to look forward to hooning in summer! In the dead of winter perhaps I'll have to make a point of setting the timer on the power point to finish the charging just before I want to use the car in the...
by Peter C in Canberra
Fri, 29 May 2009, 21:57
Forum: Batteries, charging, management and monitoring
Topic: My silly battery charging idea
Replies: 10
Views: 1877

My silly battery charging idea

I think if I were to be serious about this, and I don't think I will be, I would be looking at the flexible sort of solar cells or the sort that get embedded in resin over the top of the solar challenge-type recumbant bicycles. I would think those would add the least to weight and wind resistance an...
by Peter C in Canberra
Fri, 29 May 2009, 20:17
Forum: Batteries, charging, management and monitoring
Topic: My silly battery charging idea
Replies: 10
Views: 1877

My silly battery charging idea

Can we all join in this game? I'm just speculating idly here. I know it makes more sense to put solar panels on the roof at home than on the car, and I do have them on the roof at home. However, if I were to have some in/on the car and wanted to charge the main traction battery.... I could put some ...
by Peter C in Canberra
Fri, 29 May 2009, 17:33
Forum: Electric motors and controllers
Topic: current limiting on Curtis and TS cells
Replies: 74
Views: 8998

current limiting on Curtis and TS cells

Now I have my car registered, I have driven it for a few more days, and the weather is getting chillier it seems the BMS alarm goes off pretty precisely at 3C (270Amps). I have the cells and BMS bits all at the rear of the car. I have the controller and everything else at the front. I would think th...
by Peter C in Canberra
Fri, 29 May 2009, 02:03
Forum: Members Machines
Topic: Peter Campbell's Charade
Replies: 22
Views: 8052

Peter Campbell's Charade

As requested some comments on the registration process: I am in the ACT where is only one other home modified EV registered that I am aware of (Sacha's Hilux). At least one other EV-Charade was on the road for a while in the early 90s however. There are 4 engineers in ACT accredited to provide repor...
by Peter C in Canberra
Wed, 27 May 2009, 23:32
Forum: Members Machines
Topic: Peter Campbell's Charade
Replies: 22
Views: 8052

Peter Campbell's Charade

Registered today. Yeah!
by Peter C in Canberra
Tue, 26 May 2009, 22:12
Forum: Technical and conversion discussion
Topic: DC to DC converters
Replies: 85
Views: 14291

DC to DC converters

If your alternator warning lamp is available - how about something like this? I had started to think (not very seriously yet) about how I might use the 'charge' lamp for this purpose. I like your circuit and will put it on my list of refinements. I like the idea of having a minimum of extra meters ...
by Peter C in Canberra
Tue, 26 May 2009, 17:21
Forum: Technical and conversion discussion
Topic: DC to DC converters
Replies: 85
Views: 14291

DC to DC converters

I just learned a useful lesson. My car suddenly stopped working on the way home from getting its clean bill of health at the engineer's. It could have been embarrassing if it had happened earlier. The problem was the fuse to the DC/DC converter had blown some time earlier and the car continued runni...
by Peter C in Canberra
Mon, 25 May 2009, 20:28
Forum: General EV Discussion
Topic: Insurance
Replies: 37
Views: 4133

Insurance

This morning I took out 'comprehensive' insurance on my Daihatsu charade conversion with NRMA. They were cheaper than others I spoke to with discounts for length of membership, no claims, good record and other policies etc.. Like all the others NRMA have trouble with a comprehensive insurance that w...
by Peter C in Canberra
Mon, 25 May 2009, 04:08
Forum: Members Machines
Topic: Peter Campbell's Charade
Replies: 22
Views: 8052

Peter Campbell's Charade

I've got the tick of approval from the engineer. With the 45 TS 90s behind the back seat, mostly in the spare wheel well, I had added weight to the rear and it was obvious that the rear was heavier and the front lighter than original. The engineer's report says the car now has a 50/50 weight distrib...
by Peter C in Canberra
Mon, 25 May 2009, 01:48
Forum: Members Machines
Topic: Don's Mazda 121 Conversion
Replies: 9
Views: 3916

Don's Mazda 121 Conversion

Just a comment on the stands. I used the same four blue stands for my charade conversion and worked under the car. I was conscious of the slight possibility of pulling the car off the stands if I was really wrenching hard on a tight bolt in the deconstruction phase. I made a habit of keeping a coupl...
by Peter C in Canberra
Thu, 21 May 2009, 04:37
Forum: EV Motoring
Topic: Tesla in Australia
Replies: 58
Views: 9306

Tesla in Australia

Cool, thats only 7 hours from home, might have to make a weekend trip. Any other details of the NEVF Peter? Well my car should be there! Check elsewhere in this forum for 'AGM', 'Open Day' or 'EV run to Canberra'. Links on the AEVA site on the 'What's on' page will get you the latest. Also on at th...
by Peter C in Canberra
Tue, 19 May 2009, 20:12
Forum: EV Motoring
Topic: Tesla in Australia
Replies: 58
Views: 9306

Tesla in Australia

moemoke wrote: I would love to see a real Tesla, does anyone know when Simon display's his?
.


On Sunday the 4th of October at the National Electric Vehicle Festival in Canberra. A road closure has been organised so he can show off.
by Peter C in Canberra
Tue, 19 May 2009, 15:42
Forum: Electric motors and controllers
Topic: current limiting on Curtis and TS cells
Replies: 74
Views: 8998

current limiting on Curtis and TS cells

Thanks for the suggestion. I'll look into the Cycle Analyst and note it for the future. For now, I can't really justify changing from the TBS meter system I have installed. I think I will just have to stick to instructions that the alarm might indicate harm and go easy on the battery. I agree that t...
by Peter C in Canberra
Mon, 18 May 2009, 04:27
Forum: Electric motors and controllers
Topic: current limiting on Curtis and TS cells
Replies: 74
Views: 8998

current limiting on Curtis and TS cells

It was fairly chilly though not below zero for the few days I got to drive on the roads last week. So, the cells would not have been particularly warm, except to the extent I might have warmed them being lead footed. Once the car is back from the engineer I will be able to test further but my initia...
by Peter C in Canberra
Mon, 18 May 2009, 01:05
Forum: Electric motors and controllers
Topic: current limiting on Curtis and TS cells
Replies: 74
Views: 8998

current limiting on Curtis and TS cells

Hi, While my car is off being inspected and hopefully approved by the engineer I am thinking about my first impressions of driving the car for the last few days with a permit to drive it unregistered. I have a Charade with ADC 8", Curtis 500Amp controller and 45xTS LiFePO4 90 Amp hour cells with the...
by Peter C in Canberra
Fri, 15 May 2009, 17:40
Forum: Members Machines
Topic: Peter Campbell's Charade
Replies: 22
Views: 8052

Peter Campbell's Charade

It's with the engineer now. It's like I have left my baby at the hospital! Will it be pronounced healthy (roadworthy) or will there be a bombshell? He is also going to fit some new rear springs and shock absorbers since the car is clearly down a bit at the back (3-4cm from when I started) with proba...
by Peter C in Canberra
Sat, 18 Apr 2009, 05:12
Forum: Technical and conversion discussion
Topic: How to feed an original tachometer?
Replies: 35
Views: 6974

How to feed an original tachometer?

I guess I don't yet know in practice. On one hand I have been told I could expect to start and drive around in 3rd all the time. On the other hand I have heard the comment that one might occasionaly want to start off in 2nd with a load up a hill, or even all the time. It's not so much that you could...
by Peter C in Canberra
Sat, 18 Apr 2009, 04:35
Forum: Technical and conversion discussion
Topic: How to feed an original tachometer?
Replies: 35
Views: 6974

How to feed an original tachometer?

It occurs to me that a useful addition to the over-reving circuit could be a buzzer. One way to over rev would be the one suggested, namely accelerator pedal while in neutral or driving in too low gear, and the circuit would work for that. Another way would be to use low gear to get up a steep hill ...