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Re: Soyachips’ Electric FZR250
Posted: Thu, 30 May 2019, 21:56
by soyachips
Re: Soyachips’ Electric FZR250
Posted: Thu, 30 May 2019, 22:18
by soyachips
I struggled trying to get the controller to do the angle identification setup and control the motor but got there in the end. I did swap the positions of the hall sensor A and C wires in the connector so they matched the controller connector side. That didn't seem to fix it straight away but after running the setup step and few more times it eventually worked. Whenever the angle identification setup finishes it puts out a buzzer alarm code 3,2 which is for internal reset which isn't very intuitive. It might have been working a bit earlier as I didn't test the throttle every time it finished, thinking it hadn't worked because of the alarm!
Re: Soyachips’ Electric FZR250
Posted: Thu, 30 May 2019, 22:33
by soyachips
One problem I've run into is the gap between the brake rotor and the motor is pretty small so the original brake caliper doesn't fit!

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I contacted QS Motor and they recommended a few from their catalog that would work. Ended up getting this one in grey. I'll need to get a new mounting bracket made based on the original design and this new caliper.

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Re: Soyachips’ Electric FZR250
Posted: Fri, 31 May 2019, 07:32
by francisco.shi
What is the energy density of the finished battery pack? (Wh/kg)
Re: Soyachips’ Electric FZR250
Posted: Fri, 31 May 2019, 09:38
by soyachips
francisco.shi wrote: ↑Fri, 31 May 2019, 07:32
What is the energy density of the finished battery pack? (Wh/kg)
According to the specs, the Headway 15ah are 105 Wh/kg
Re: Soyachips’ Electric FZR250
Posted: Fri, 31 May 2019, 10:50
by francisco.shi
Is that after it is assembled with the bus bars and holder?
Re: Soyachips’ Electric FZR250
Posted: Fri, 31 May 2019, 17:51
by soyachips
francisco.shi wrote: ↑Fri, 31 May 2019, 10:50
Is that after it is assembled with the bus bars and holder?
No that’s just based on the specs of the cells. This is just a temporary pack that I’m using for testing. Still haven’t decided exactly what the final pack will be.
Re: Soyachips’ Electric FZR250
Posted: Mon, 10 Jun 2019, 20:40
by soyachips
Had some awesome help from Danny Ripperton (AEVA member) machining the swingarm blocks that hold the hub motor axle.

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The blocks are solid aluminium and weigh 344g each

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Re: Soyachips’ Electric FZR250
Posted: Mon, 10 Jun 2019, 20:48
by soyachips
Re: Soyachips’ Electric FZR250
Posted: Tue, 20 Aug 2019, 18:47
by AudibleDestrcution
soyachips wrote: ↑Tue, 23 Apr 2019, 21:47
I'm a bit late to the party for this, but I'm a stickler for data so I couldn't help but mention it.
The continuous discharge for yinlong cells is rated at 10c, and the burst is 25c from memory.
I saw yinlong has 150 as continuous, which is nearly a third of whats it capable of.
I considered that it might be referencing a minimum voltage you have specified for your needs, but the others seem to be rather high for that.
Im an avid user of yinlong so i thought id just point it out.
Re: Soyachips’ Electric FZR250
Posted: Wed, 21 Aug 2019, 12:37
by Richo
The link I provided indicated 6C/15C by the seller.
So the data soyachips used was based on that.
I understand that this is your experience but is there any actual tests or datasheets that claim 10C/25C?
In anycase I doubt that it was deciding factor for the battery used in this conversion.
Re: Soyachips’ Electric FZR250
Posted: Fri, 04 Oct 2019, 20:23
by soyachips
Re: Soyachips’ Electric FZR250
Posted: Fri, 04 Oct 2019, 20:30
by brendon_m
Looking very swish
Re: Soyachips’ Electric FZR250
Posted: Fri, 04 Oct 2019, 20:55
by soyachips
Re: Soyachips’ Electric FZR250
Posted: Fri, 04 Oct 2019, 20:56
by jonescg
I love the battery pack enclosure edges - very nice. I presume they're pretty strong?
Nice work on the brake caliper too - the rear brake and wheel alignment can take ages to get right.
Re: Soyachips’ Electric FZR250
Posted: Fri, 04 Oct 2019, 21:00
by soyachips
Re: Soyachips’ Electric FZR250
Posted: Fri, 04 Oct 2019, 21:04
by soyachips
jonescg wrote: ↑Fri, 04 Oct 2019, 20:56
I love the battery pack enclosure edges - very nice. I presume they're pretty strong?
Nice work on the brake caliper too - the rear brake and wheel alignment can take ages to get right.
I found some references on how to make the corners strong and was going to follow that but because I'm using polycarbonate on the inside I can't quite do that but I'm going to silicon the panels in, use threadlock on all the screws and put those corner bracket things everywhere I can so I'm thinking it will be strong enough.

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Re: Soyachips’ Electric FZR250
Posted: Fri, 04 Oct 2019, 21:09
by soyachips
Or do you mean the square corner things? They seem pretty strong too and I've got long screws going into the ends of the extrusions. Funny because I've since read that any more than 6 threads doesn't add any more strength so I did a whole lot more tapping than I needed to!
Re: Soyachips’ Electric FZR250
Posted: Fri, 04 Oct 2019, 21:15
by soyachips
Richo wrote: ↑Wed, 21 Aug 2019, 12:37
The link I provided indicated 6C/15C by the seller.
So the data soyachips used was based on that.
I understand that this is your experience but is there any actual tests or datasheets that claim 10C/25C?
In anycase I doubt that it was deciding factor for the battery used in this conversion.
Thanks for the feedback on the Yinlong cells. They look really interesting and will keep them in mind in case I need to upgrade my pack down the track.
Re: Soyachips’ Electric FZR250
Posted: Sat, 05 Oct 2019, 17:55
by francisco.shi
I much does the battery pack weigh?
Re: Soyachips’ Electric FZR250
Posted: Sun, 06 Oct 2019, 14:11
by soyachips
francisco.shi wrote: ↑Sat, 05 Oct 2019, 17:55
I much does the battery pack weigh?
The pack weighs 28.5kg
Re: Soyachips’ Electric FZR250
Posted: Sun, 13 Oct 2019, 21:45
by soyachips
OK so I think I know the answer but just want to check so I don’t buy the wrong thing ... if I use 4 x LiFePO4 cells to power my 12V system and I want to use a DC-DC converter to keep them charged, I need a converter that outputs something higher than 12V right? I’ve seen ones that output 13.8V which looks like a good balance of high enough to charge the batteries but not over charge them. Most converters output 12V which seems too low or would that work fine?
Re: Soyachips’ Electric FZR250
Posted: Sun, 13 Oct 2019, 22:46
by brendon_m
Most dcdc converters I've seen that say they output 12v actually output around 14v. I think they just use 12v because that's the voltage that people know.
Check the datasheet/in depth specs to be sure
Re: Soyachips’ Electric FZR250
Posted: Mon, 14 Oct 2019, 12:33
by Richo
4 x headway is 12.8V nominal and 14.6V charged.
So anything from 13V-14V is ok.
Most of that would be for the headlight+brake light.
So 100-150W for a DC-DC?
Re: Soyachips’ Electric FZR250
Posted: Mon, 14 Oct 2019, 20:12
by soyachips
brendon_m wrote: ↑Sun, 13 Oct 2019, 22:46
Most dcdc converters I've seen that say they output 12v actually output around 14v. I think they just use 12v because that's the voltage that people know.
Check the datasheet/in depth specs to be sure
Great thanks, will do
