Search found 564 matches

by 4Springs
Sun, 18 Mar 2012, 22:50
Forum: Batteries, charging, management and monitoring
Topic: AGM Battery Charger Operation
Replies: 6
Views: 1546

AGM Battery Charger Operation

Thanks coulomb, it's good to see that I'm thinking along the right track. Re the similarity between Elcon and Chennic chargers, I have a manual for an Elcon, although I haven't seen an actual charger. Although it is the same colour, and similarly put together, the shape is a bit different. Also, as ...
by 4Springs
Sun, 18 Mar 2012, 14:14
Forum: Batteries, charging, management and monitoring
Topic: AGM Battery Charger Operation
Replies: 6
Views: 1546

AGM Battery Charger Operation

I think that my battery charger is running the voltage a bit high on my battery pack. I think I know what might be causing it. I think I have figured out a way to fix it. I may be wrong on any or all of the above three points, so I’d like to run it all past the knowledgeable folk here in the forum. ...
by 4Springs
Sun, 18 Mar 2012, 01:15
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

The replacement controller arrived on Thursday. A slight change, I ordered a "waterproof" one this time. The new controller looks exactly the same as the old one, so much so that I got out my photos to make sure they hadn't just sent me mine back! Different serial number though, and no sign of the t...
by 4Springs
Mon, 12 Mar 2012, 01:51
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Kelly have kept me well informed, and have now sent me a replacement controller. Should be here this week. They decided that mine was "completely burnt", and so built me a new one. I'll be interested to see if this one has the chasis connected to the B+ terminal. I do wonder if that was a symptom of...
by 4Springs
Tue, 14 Feb 2012, 01:42
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Even if the current limit was the problem you would have breifly shot off.
Indeed, although "shot off" is sort of what it did.

Kelly replied today to my email with the resistances, saying that I should send it back. They will repair or replace it.

So far so good!
by 4Springs
Sat, 11 Feb 2012, 22:57
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

I received a quick reply from Kelly, asking me to measure some resistances on the controller. I'll have to take it out first, so I'll do this tomorrow. I really don't know what happened. I must have had it hooked up right to go as long as it did (only 3 connections, not rocket science). It's like it...
by 4Springs
Fri, 10 Feb 2012, 01:07
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

It's Alive! <BANG> It's Dead! Took the Brumby out of the shed today for the first time in just over a year! I puttered around the house, got out and had a look (and a sniff) around all the connections and components. All looked good, so I drove up to the end of the driveway. There was then a loud ba...
by 4Springs
Sun, 08 Jan 2012, 02:52
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Second reply from Kelly wasn't much help: I mean you can put the insulation plate for the controller case. The M- has 150V voltage initially.When you speed up the motor,the voltage on M- will be reduced. We use the opposite logic control for our controller. From this reply and the previous one, I th...
by 4Springs
Fri, 06 Jan 2012, 03:28
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Not quite sure what that last comment was about antiscab, but I quickly looked through the photos to see if I had any IEC mains cables in view! Couldn't see any, phew! I had a reply from Kelly today. Fany asked for some clarifications, and then had this to say: It is OK.You can use the controller to...
by 4Springs
Wed, 04 Jan 2012, 23:27
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Ok, I've now disconnected everything from the controller. There is less than 1 ohm from the case to the M- terminal. There is 130k between the case and the B- terminal. The resistance from the case to the B+ terminal is now higher than my meter measures. The voltages that I was measuring earlier wer...
by 4Springs
Wed, 04 Jan 2012, 23:24
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Hmm, that is interesting, I've managed to post the same reply twice. Doesn't look like I can delete it, but I can edit it to say something else.... Image
by 4Springs
Wed, 04 Jan 2012, 02:33
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Ok, to answer my own question, there should be no vibration at all when the motor and clutch are spinning. A clutch can be balanced by any automotive engineering place with the appropriate clutch balancing machine. I spoke to a local business, and the man said that yes, turning down the flywheel wil...
by 4Springs
Tue, 29 Nov 2011, 23:49
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Ok, I've finished building a shed, and I'm back on the Brumby. http://forums.aeva.asn.au/uploads/1844/DSCN4174_Small.JPG This photo shows the battery boxes under the bonnet. You can also see a fuse and one of the isolation switches. The Kelly controller is there, I screwed it onto the wooden battery...
by 4Springs
Mon, 17 Oct 2011, 03:10
Forum: The Lounge
Topic: Is there a beginners section ?
Replies: 7
Views: 1415

Is there a beginners section ?

I borrowed this book from the library: "Build your own Electric Vehicle" By Seth Leitman & Bob Brant Helpful with DC motor theory, how to work out power requirements etc. Focus is on Lead Acid batteries. You'll also want to read the National Codes of Practice (NCOP) Vehicle Standards Bulletin 14. Th...
by 4Springs
Sun, 02 Oct 2011, 16:04
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Thanks for reminding me that I hadn't updated for a while: After a false start involving breaking a bolt, DKEL and I installed the motor into the Brumby: http://forums.aeva.asn.au/uploads/1844/DSCN4113_Small.JPG http://forums.aeva.asn.au/uploads/1844/DSCN4115_Small.JPG The engine mounts attached to ...
by 4Springs
Sat, 10 Sep 2011, 03:24
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

I finally got my motor and bell housing back, complete with adapter plate and coupling. Looks good to my untrained eye, cost $800. http://forums.aeva.asn.au/uploads/1844/DSCN4092_Small.JPG http://forums.aeva.asn.au/uploads/1844/DSCN4093_Small.JPG The engineer who added four new holes to the motor en...
by 4Springs
Fri, 22 Jul 2011, 03:19
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Bottom Battery Boxes http://forums.aeva.asn.au/uploads/1844/DSCN4053_Small.JPG http://forums.aeva.asn.au/uploads/1844/DSCN4067_Small_Small.JPG These photos are an attempt to show the bottom battery boxes. You are underneath the tray of the ute, looking forwards. The black beam running left to right ...
by 4Springs
Thu, 21 Jul 2011, 00:31
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Sorry if this has been discussed before - are you sure you can run those batteries on their ends like that? I'd check with the manufacturer. Normally the vent is on the top so that mostly gas gets vented, this way if there is a venting, you will probably lose electrolyte :-( AGM batteries can go an...
by 4Springs
Wed, 20 Jul 2011, 02:31
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

http://forums.aeva.asn.au/uploads/1844/DSCN4072_Small.JPG This photo shows the main battery box with all the covers sitting in place. There is a thermometer sitting on top, to try to get an idea of how warm it will be in there. The top is a single piece of Formply, kept in place with steel brackets...
by 4Springs
Wed, 20 Jul 2011, 02:13
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

http://forums.aeva.asn.au/uploads/1844/DSCN4046_Small.JPG The next photo shows the aluminium sheet that sits on the boards. This is to help distribute the heat better. Without it, heat would rise from the central heater into the box, and so the centre would be far warmer than everywhere else. The i...
by 4Springs
Wed, 20 Jul 2011, 02:03
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

I have some photos of the rear battery boxes. Main one has seven batteries at the front of the tray. Then there are two underneath the tray, each containing one battery. http://forums.aeva.asn.au/uploads/1844/DSCN4041_Small.JPG First photo is rather busy. This is the front of the tray of the ute, vi...
by 4Springs
Mon, 13 Jun 2011, 00:57
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

I've been quiet for a while, working in the garage. Work at this time of year is a dark, cold prospect, especially in the evenings after I've finished my paid job for the day. Battery boxes are coming along nicely, if slowly. I'm close to the final assembly of the rear battery boxes, so I'll take so...
by 4Springs
Mon, 23 May 2011, 01:10
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Let's have a go at some "analogue stuff": http://forums.aeva.asn.au/uploads/1844/Temperature_Inst_Small.jpeg The temp gauge goes up when the resistance goes down. I'm assuming that the temperatures of both motor and controller are bad at about the same level. If so, I can use the same value thermist...
by 4Springs
Sun, 22 May 2011, 04:29
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

That's a cool site! I come from a computing background, so I tend to think of relays as logical gates. I'll write something like "lightson AND NOT keyon = buzzer" - then I'll turn that into relay logic. I'm imagining that I'll use a normal automotive relay for the latch. They are quite cheap, come w...
by 4Springs
Fri, 20 May 2011, 03:02
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 223
Views: 40388

4Springs' Brumby

Circuit Diagram Mark II http://forums.aeva.asn.au/uploads/1844/Brumby_CCT_Diagram_2_M.jpg I now have a contactor in the rear battery box. This means that I only have 144VDC when either the key is turned to ACC (or ON, or START), or when the vehicle is plugged into 240VAC. The precharge now occurs wh...