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- Today, 17:20
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
Just patching up the cover and will be ready for an install very soon.
- Wed, 03 Mar 2021, 14:36
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
It's still going to be a rush to get things ready for Saturday... The battery cover certainly won't be waterproof in time, but I might be able to get the internals finished.
- Mon, 01 Mar 2021, 20:57
- Forum: Hyundai and Kia
- Topic: Brake Lock: it should not happen!
- Replies: 5
- Views: 125
Re: Brake Lock: it should not happen!
I did hit the picks on a gravel road in the Ioniq and found it was really bad at pulling up. Felt like it locked up and pushed a pile of gravel in front of the tyres... But it should be better on bitumen surely?
- Mon, 01 Mar 2021, 20:53
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
I will need some of that stuff yes. It's used on bathroom tiles right? I will need to hack and modify bits of the cover to make everything fit regardless, so once that's done I'll get busy with the sealant.
- Mon, 01 Mar 2021, 19:39
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
The front busbars are going to be fairly easy to put together, but it does mean that the battery clamps will need to be as tight as practical, and as close to the modules as I can get them. There's barely a 1.6 mm gap there, so I'll have to ensure a sheet of FR4 sits in front of the busbars to preve...
- Sun, 28 Feb 2021, 20:50
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
- Sun, 28 Feb 2021, 16:59
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
All I need now is the sheet metal clamps.
It's T I G H T... I think I'll be doing some fibreglassing on the enclosure to make it fit.- Sat, 27 Feb 2021, 20:53
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
Last weekend I welded every last cell and glued the top and bottom covers on. Today was supposed to be the day I filled them with potting compound - EPL-9 which is a polyurethane elastomer with a hardness ideal for keeping batteries snug. My plan was to drill out the missing cell and use this as a f...
- Sat, 27 Feb 2021, 17:11
- Forum: Fonzarelli
- Topic: Fonzarelli sale on at the moment
- Replies: 2
- Views: 1699
Re: Fonzarelli sale on at the moment
They did have the guys in North Perth set up, but sure if they followed through with it though.
I rode the NKD - did not like. The steering geometry is all horribly wrong. Talk it up as 'nimble' all you like, but it steered like a trolley. Power was fine for the job at least.
I rode the NKD - did not like. The steering geometry is all horribly wrong. Talk it up as 'nimble' all you like, but it steered like a trolley. Power was fine for the job at least.
- Sat, 27 Feb 2021, 13:31
- Forum: Batteries, charging, management and monitoring
- Topic: E-Moto battery connectors melting....
- Replies: 5
- Views: 108
Re: E-Moto battery connectors melting....
Hmm, no images showing up. Chinese made stuff is often undersized on the connectors. It would need to be a minimum of 16 mm2, preferable 20 mm2 for the power of the bike.
- Sat, 27 Feb 2021, 09:59
- Forum: Technical and conversion discussion
- Topic: Planned Suzuki Jimny conversion
- Replies: 44
- Views: 1042
Re: Planned Suzuki Jimny conversion
I only put the Prelude build in the technical section because it wasn't my machine... But it sort of belongs there anyway.
- Wed, 24 Feb 2021, 19:46
- Forum: Technical and conversion discussion
- Topic: Planned Suzuki Jimny conversion
- Replies: 44
- Views: 1042
Re: Planned Suzuki Jimny conversion
I don't know much about it myself to be honest, other than to say that three 7 kW on-board chargers and a Type-2 inlet would make more sense. If you have room for them of course.
- Mon, 22 Feb 2021, 15:56
- Forum: Batteries, charging, management and monitoring
- Topic: 12-cell CAN-based BMS modules
- Replies: 13
- Views: 2936
Re: 12-cell CAN-based BMS modules
SEI is both necessary to protect the anode, and unfortunate as it depletes the lithium inventory. Crud has to come from somewhere, and the mobile Li+ ions are a good source. So gains in the SEI means losses in mobile ion stock. Net result is lower useable capacity and higher internal resistance. If ...
- Sun, 21 Feb 2021, 14:42
- Forum: Batteries, charging, management and monitoring
- Topic: Normal/Acceptable Battery Sag?
- Replies: 4
- Views: 544
Re: Normal/Acceptable Battery Sag?
Work out what the DCIR of the cells are first.
0.5 V / 200 A = 2.5 mOhms. Not bad.
So if you had a nominal 96 of them in series for a typical 355 V system, your total DCIR might be 0.24 ohms.
200 amps at a nominal 355 V is 71 kW, but I^2 x R losses mean you're generating 10 kW of heat!
0.5 V / 200 A = 2.5 mOhms. Not bad.
So if you had a nominal 96 of them in series for a typical 355 V system, your total DCIR might be 0.24 ohms.
200 amps at a nominal 355 V is 71 kW, but I^2 x R losses mean you're generating 10 kW of heat!
- Sat, 20 Feb 2021, 22:31
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
Finally, about 5 weeks after starting, I have spot-welded the last tab to the busbars. Last thing to do now is solder the 6 or 7 recalcitrant tabs which can't be welded. You can see them where I've ground back the passivated nickel surface. Then do the cell top welding (about 2 hours there) before p...
- Mon, 15 Feb 2021, 09:08
- Forum: Renewable Energy and Storage (Non-EV)
- Topic: Leaf battery pack for home storage?
- Replies: 18
- Views: 366
Re: Leaf battery pack for home storage?
These are the ones I was thinking of. Plus the one @4Springs put together here on the forum.
ZEVA - https://www.zeva.com.au/
EV-Power - https://www.ev-power.com.au/webstore/
ZEVA - https://www.zeva.com.au/
EV-Power - https://www.ev-power.com.au/webstore/
- Fri, 12 Feb 2021, 15:59
- Forum: Renewable Energy and Storage (Non-EV)
- Topic: Leaf battery pack for home storage?
- Replies: 18
- Views: 366
Re: Leaf battery pack for home storage?
There are cheaper BMS's around, they just have less fruit. If fruit is your thing Batrium has it by the ... bowl full.
- Fri, 12 Feb 2021, 10:51
- Forum: Hyundai and Kia
- Topic: Kona Fire - new packs required
- Replies: 24
- Views: 637
Re: Kona Fire - new packs required
Oooh cheap Korean home storage batteries coming to a garage near you!
- Fri, 12 Feb 2021, 09:53
- Forum: Renewable Energy and Storage (Non-EV)
- Topic: Leaf battery pack for home storage?
- Replies: 18
- Views: 366
Re: Leaf battery pack for home storage?
You mean use the Leaf battery as is? If you can use the CAN protocol to operate the BMS, then I can't see why not. You'd need a high voltage DC hybrid inverter though. It's much easier to pull the battery apart, sort the laggards from the good cells, re-configure as a 14s pack and buy a 48 volt hybr...
- Wed, 10 Feb 2021, 13:50
- Forum: For Sale/Wanted
- Topic: Electric Maserati
- Replies: 9
- Views: 397
- Sun, 07 Feb 2021, 20:44
- Forum: For Sale/Wanted
- Topic: Electric Maserati
- Replies: 9
- Views: 397
Re: Electric Maserati
Depending on your battery voltage you might not have the top speed you want, but I'm sure you're past all that now eh Dave? 

- Sun, 07 Feb 2021, 14:08
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
Ah yes true there is that approach for sure. I see a guy on Endless Sphere has bought a pulse arc welder for welding 0.4 mm thick copper to cells directly. Does a good job, and 0.4 mm thick copper is about equal in conductivity to 1 mm aluminium, with none of the intermediate resistance of a nickel ...
- Sun, 07 Feb 2021, 13:56
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
Thanks, I just finished module #2. We had the remains of a tropical low come south to visit Perth, so while the cooler weather is very welcome, the humidity isn't quite so popular. I'm watching the busbars of the remaining two modules start to get progressively more and more passivated. Some of them...
- Fri, 05 Feb 2021, 22:06
- Forum: Technical and conversion discussion
- Topic: Prelude conversion project - some questions
- Replies: 699
- Views: 78373
Re: Prelude conversion project - some questions
thermal epoxy going on.jpg A shot of the thermal epoxy before the FR4 goes on. I have had to contend with some passivated sections of busbar which will not take a spot weld. I can't even solder it. But as they might only impact half a dozen cells per busplate, I can't really justify making a new on...
- Fri, 05 Feb 2021, 20:43
- Forum: General EV Discussion
- Topic: Future fuels discussion paper
- Replies: 5
- Views: 266
Re: Future fuels discussion paper
It's bollocks. Two years overdue and full of nothing. Literally seeks to just do nothing and let the market sort it out. Actively promotes 20 year old technology (hybrids) as new technology and lies about their supposed advantages. Taylors comments today were littered with contradictions. "We see no...