Search found 207 matches

by soyachips
Wed, 26 Jan 2022, 08:46
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

Thanks for the explanation, the string does turn around and come back to the same side but on a second level so I do need to be careful with that 👍
by soyachips
Sun, 09 Jan 2022, 12:22
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

According to these specs they should be good up to 80VDC Ok, I'm surprised. But I'm guessing that your whole pack will be over 80 V. if so, when the modules are placed in series, a short in the controller or cables to the controller will cause the whole battery pack voltage to appear across the fus...
by soyachips
Sun, 09 Jan 2022, 11:10
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

Sweet! I rode an FZR 250 (3Ln3) for many years. Sold it several years ago now, but have many many great memories on that bike. Yours is in great condition! Mine had an open exhaust and used to scream at its max 18,500 rpm (!!). A lot of fun on a track too, they’re so light and nimble. My wife still...
by soyachips
Sun, 09 Jan 2022, 11:00
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

coulomb wrote: Tue, 04 Jan 2022, 19:45 The fuse on the old box doesn't look to be DC rated. [ Edit: well, to above about 28 VDC. ] Hopefully fixed with the new boxes.
According to these specs they should be good up to 80VDC

https://www.grainger.com/product/BUSSMA ... Fuse-1DC77
by soyachips
Sun, 09 Jan 2022, 10:58
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

Were you aiming to prevent conductivity between the sides of the new box by using polyimide on the equal angle joiner or just prevent shorts during assembly (been there)? It looks like the rivets will conduct from the outer face of the box through into the holes in the equal angle. Its mainly there...
by soyachips
Mon, 27 Dec 2021, 21:40
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

I'm using some of that green insulating fish/barley? paper between the cells, silicon sheet on the end plates and kapton tape on the insides of the box so hopefully that provides enough protection :shock:
by soyachips
Mon, 27 Dec 2021, 16:26
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

So the battery is now 23s mainly because the controller can only handle 90V. At some point I'll upgrade and go to 26s. Max speed is now 110kmh and range is 150-200km (to be verified). Next step is to replace the DC-DC converter as I've now gone up in voltage a bit above what it's rated for and a new...
by soyachips
Mon, 27 Dec 2021, 16:15
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

The battery box was mostly built with rivets and glue but I had help from a friend for the mounting brackets which are welded.
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by soyachips
Mon, 27 Dec 2021, 15:49
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

And then lockdown happened and in one of my "I'm in need of a project" late night impulse purchases, I bought a bunch of 117Ah NMC cells!!!
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by soyachips
Mon, 27 Dec 2021, 15:41
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

I also started playing around with reading the current and battery SoC out of the ANT BMS and using an Arduino to drive the original gauges but unfortunately never got it working properly. I found an eBay seller that can make custom faces with the proper backlighting for a reasonable price too. Hope...
by soyachips
Mon, 27 Dec 2021, 15:32
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

I also discovered the TeslAnything Adapter from EVolution that allows non-Tesla EVs to use their destination chargers and other Type 2 charge points. This paired with a faster charger setup meant I could explore a bit more. https://electriccarcharger.com.au/product-page/teslanything-adaptor-to-bmw-i...
by soyachips
Mon, 27 Dec 2021, 15:22
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

So everything was going great and my range had increased to 50-70km which was pretty much double what I could do before and meant I could now do a bit more exploring. Here's a couple of nice shots down at La Perouse.
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by soyachips
Mon, 27 Dec 2021, 15:18
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

Here's what the battery pack looks like installed.
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by soyachips
Mon, 27 Dec 2021, 15:10
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

OK so once again its been way too long between posts so I'll add some photos to try and fill the gap up to where the project is now! After sorting out the testing I used a fantastic 2p busbar kit made by jonescg which made assembly really easy. The panels for the box were cut on a friends CNC router...
by soyachips
Mon, 08 Jun 2020, 14:04
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

Yes I was worried about the alligator clips too so I’ve replaced them and used thicker wire. There’s still some difference but not as bad as before. I’ve now set the LVC on the device to 2.3V to compensate which is actually 2.5V at the terminals. Thanks for everyone’s help. I think I’m good to test ...
by soyachips
Mon, 08 Jun 2020, 10:08
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

Awesome thanks will give that a go 👍
by soyachips
Mon, 08 Jun 2020, 08:44
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

OK so I just used a multimeter to test the voltage on the tabs and also where the wires connect to the PCB board and there’s a 0.3-0.4V difference when discharging the cell but they’re the same at rest. Any ideas what’s going on or how to fix it? It’s only a $50 device so maybe that’s my problem 😫 I...
by soyachips
Mon, 08 Jun 2020, 07:13
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

This is the setup I’m using inspired by someone on Endless Sphere. The tabs are pretty well clamped down and I get the same voltage drop if I put the alligator clips directly onto the tabs.
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by soyachips
Sun, 07 Jun 2020, 20:41
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

OK so I've finally received a battery capacity tester I bought on AliExpress a while ago and am starting to do some testing. My plan is to test each cell so I can pair them up into equal size parallel groups before putting them in series. The cells are A123 20Ah so their nominal voltage is 3.3V and ...
by soyachips
Mon, 04 May 2020, 21:19
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

What did you end up doing with the coolant inside the frame? Just leave it empty? Interesting place to store coolant I reckon... I just left it empty, yeah I was pretty surprised to find that! I thought about cutting off the tubes that come off the frame where the hose attached but since I'm avoidi...
by soyachips
Mon, 04 May 2020, 21:16
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

jonescg wrote: Mon, 04 May 2020, 09:00 I should be able to ship the buslinks and PCB over to you by the end of this week.
Excellent, can't wait!
by soyachips
Mon, 04 May 2020, 21:15
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

antiscab wrote: Mon, 04 May 2020, 02:07 If you're interested in more A123 cells, I have around 80 or so in my shed
Thanks Matt, good to know in case I need to replace some cells or increase capacity :D
by soyachips
Sun, 03 May 2020, 23:20
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

Also I've managed to get some A123 20Ah cells to upgrade my battery pack. These looks like pretty amazing cells compared to the Headways so I'm really looking forward to getting these in the bike and seeing how they go. I built some cardboard boxes to try out different configurations and although I ...
by soyachips
Sun, 03 May 2020, 23:01
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

I recently added a brake lever to the bike to control the amount of regenerative braking to use. Previously I was just using the percentage setting in the Kelly controller to control the amount but it was either just right at lower speeds and not enough at higher speeds or vice versa. This way I can...
by soyachips
Sun, 29 Mar 2020, 10:50
Forum: Members Machines
Topic: Soyachips’ Electric FZR250
Replies: 123
Views: 28041

Re: Soyachips’ Electric FZR250

Ok great thanks, will look into NCM as a possible chemistry