Search found 490 matches

by francisco.shi
Sat, 27 Feb 2021, 13:43
Forum: Members Machines
Topic: Geerant's Magnatron
Replies: 78
Views: 19933

Re: Geerant's Magnatron

The inverter will have a maximum voltage given by the parts used. After that it is just setting the right parameters.
The torque should not drop so quickly. Are you sure it is not the inverter not wanting to go above that speed?
by francisco.shi
Fri, 26 Feb 2021, 10:41
Forum: Technical and conversion discussion
Topic: Planned Suzuki Jimny conversion
Replies: 44
Views: 1014

Re: Planned Suzuki Jimny conversion

I think I saw the 250v lower limit on the name plate of a tritium vfill while I was charging.
I am posting my conversion on the forum. You can check under member's machines and look for Francisco's electric Pajero.
by francisco.shi
Thu, 25 Feb 2021, 07:00
Forum: Technical and conversion discussion
Topic: Planned Suzuki Jimny conversion
Replies: 44
Views: 1014

Re: Planned Suzuki Jimny conversion

I am planning to put DC fast charging on my conversion. I will keep you up to date on how it goes. One thing you have to consider for fast charging is most fast chargers do not go below 250v. Your battery pack will need to be above 250v when it is flat. If you use NCMs you will need a 300v nominal a...
by francisco.shi
Tue, 23 Feb 2021, 11:38
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 199
Views: 26801

Re: Francisco's Electric Pajero

I was doing a test of the LG cells today and was very surprised at the results. I have a friend that wants to use them on a drag car. He wanted to know if they could take a 15C discharge for 10sec. He agreed to pay for the cells (in case they burst into flames during the test) so we run the test. We...
by francisco.shi
Tue, 23 Feb 2021, 11:30
Forum: Members Machines
Topic: Geerant's Magnatron
Replies: 78
Views: 19933

Re: Geerant's Magnatron

I just saw the torque curve on your AC motor and noticed that it drops very fast just before 2krpm. I am assuming the inverter is not using field weakening?
by francisco.shi
Tue, 16 Feb 2021, 06:18
Forum: Renewable Energy and Storage (Non-EV)
Topic: Leaf battery pack for home storage?
Replies: 18
Views: 360

Re: Leaf battery pack for home storage?

Something you need to consider is that if you use bricks from different packs you will need a much more powerful bypass to keep the cells balanced and you may need a balancer that shifts the energy instead of just dissipating it.
by francisco.shi
Mon, 15 Feb 2021, 16:11
Forum: MG EVs
Topic: MG ZS EV
Replies: 93
Views: 4649

Re: MG ZS EV

I got solar panels and storage hot water and added a solar collector. Because the heater will try to keep the water hot I put a switch and a timer so I could run off the solar as a booster. I set the timer to run from 1:30 pm to about 3pm. (At that time I still have solar and usually no one is using...
by francisco.shi
Fri, 12 Feb 2021, 15:07
Forum: Renewable Energy and Storage (Non-EV)
Topic: Leaf battery pack for home storage?
Replies: 18
Views: 360

Re: Leaf battery pack for home storage?

That is the price for the batrium BMS.
https://www.batrium.com/collections/dec ... xp-leafmon
It seems to be popular.
I can ask him to let me know when he has more packs. He doesn't always have them available.
He is in QLD and not sure what freight will be like.
by francisco.shi
Fri, 12 Feb 2021, 14:57
Forum: Renewable Energy and Storage (Non-EV)
Topic: Leaf battery pack for home storage?
Replies: 18
Views: 360

Re: Leaf battery pack for home storage?

I know a guy that sells the leaf bricks for about $50 each you will need 49. The Batrium BMS is about $1300 and the box and busbars about another $1000. So you are looking at about $5k + labour.
by francisco.shi
Fri, 12 Feb 2021, 11:45
Forum: Renewable Energy and Storage (Non-EV)
Topic: Leaf battery pack for home storage?
Replies: 18
Views: 360

Re: Leaf battery pack for home storage?

What is your idea of a reasonable price?
by francisco.shi
Sun, 07 Feb 2021, 14:05
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 698
Views: 78313

Re: Prelude conversion project - some questions

I think you are thinking of soldering the wrong way. The way to do it fast is to use some solder paste, locate the strips in the right place (some capton tape will probably do the trick) and heat up the whole bus bar. The solder melts and all tabs are done at once. Then you take the whole busbar wit...
by francisco.shi
Sun, 07 Feb 2021, 07:21
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 698
Views: 78313

Re: Prelude conversion project - some questions

The battery pack is looking really good.
by francisco.shi
Sun, 07 Feb 2021, 07:19
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 698
Views: 78313

Re: Prelude conversion project - some questions

I was thinking more from the perspective of joining to the busbar. I have been able to buy 1.2mm copper sheet (I had to use it for a project) and I have some 0.25mm and we used to have 0.5mm from when we used to make PCBs. The laser cutting is an issue. I am just thinking it is much easier to plate ...
by francisco.shi
Sat, 06 Feb 2021, 10:01
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 698
Views: 78313

Re: Prelude conversion project - some questions

You may be better off using a thinner copper sheet instead.
by francisco.shi
Wed, 03 Feb 2021, 15:17
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 698
Views: 78313

Re: Prelude conversion project - some questions

Nickel plating on copper is dead easy. Anyone can do it.
Plating Al is not something I want to try.
by francisco.shi
Wed, 03 Feb 2021, 12:12
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 698
Views: 78313

Re: Prelude conversion project - some questions

I think the problem with Al is that it is very difficult to get a metallic bond to other metals. Copper on the other hand likes to alloy.
by francisco.shi
Wed, 03 Feb 2021, 10:45
Forum: Mitsubishi
Topic: Aftermarket iMiEV battery upgrade project
Replies: 504
Views: 55304

Re: Aftermarket iMiEV battery upgrade project

I found the minicab uses a lot more power. After it gets to 40kph it seems to pull much less and it barely makes 100kph with the foot to the floor and the power meter to the max. The Imiev on the other hand gets to 100kph quite easily and it only needs about half of the meter some times close to the...
by francisco.shi
Wed, 03 Feb 2021, 08:32
Forum: Mitsubishi
Topic: Aftermarket iMiEV battery upgrade project
Replies: 504
Views: 55304

Re: Aftermarket iMiEV battery upgrade project

So it means that with 47Ah we should get about 75km right?
I am not going to test down to turtle mode. I am going to stop when the dial starts flashing (I don't want to have to tow)
by francisco.shi
Tue, 02 Feb 2021, 19:40
Forum: Mitsubishi
Topic: Aftermarket iMiEV battery upgrade project
Replies: 504
Views: 55304

Re: Aftermarket iMiEV battery upgrade project

I did a test today on an Imiev minivan with 94Ah batteries (cells have been replaced with higher capacity ones) and managed to use the full battery capacity. I started with 87% charge (2 bars less than full) and drove it until the charge dial started flashing (2 bars from empty) and I got a bit over...
by francisco.shi
Sun, 31 Jan 2021, 12:51
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 698
Views: 78313

Re: Prelude conversion project - some questions

And I thought that assembling my packs with all those cooling plates and pipes was too fiddly.
by francisco.shi
Sun, 31 Jan 2021, 11:09
Forum: Members Machines
Topic: Luke's 2001 NB MX-5
Replies: 46
Views: 2069

Re: Luke's 2001 NB MX-5

If you send me a 3D model I can get you a quote.
by francisco.shi
Sun, 31 Jan 2021, 06:45
Forum: Members Machines
Topic: Luke's 2001 NB MX-5
Replies: 46
Views: 2069

Re: Luke's 2001 NB MX-5

Screenshot_20210131-083735_Chrome.jpg This black plastic part took 1hr to program and about 5min to machine. It has 4 35mm deep M6 threded holes a slot to hold the cooling manifold and a curved shape on the bottom to fit in the case. I had to make 10. Material was $20 total processing time was abou...
by francisco.shi
Sun, 31 Jan 2021, 06:31
Forum: Members Machines
Topic: Luke's 2001 NB MX-5
Replies: 46
Views: 2069

Re: Luke's 2001 NB MX-5

$400 will get you 30kg of machined plastic of your choice. No need to spend time printing and the parts look better, are structurally better and can be made out of materials that do not melt or deform under pressure (like phenolic type materials) 3D printing is great for some circumstances but CNC m...
by francisco.shi
Sat, 30 Jan 2021, 20:06
Forum: Members Machines
Topic: Luke's 2001 NB MX-5
Replies: 46
Views: 2069

Re: Luke's 2001 NB MX-5

If you are going to make more than 2 or 3 it will probably be better to get them CNC machined. You will get a much better finish, the material strength will be better and you can use any material you like and it may turn out to be cheaper too.
by francisco.shi
Thu, 28 Jan 2021, 21:31
Forum: Mitsubishi
Topic: Aftermarket iMiEV battery upgrade project
Replies: 504
Views: 55304

Re: Aftermarket iMiEV battery upgrade project

My approach is that if I emulate the BMU I know exactly what is going on so I can make it behave the way I want without having to try to guess what some one else though was a good idea. What we want the BMU to do is very well defined so I think it will take less time to implement a digital solution ...