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by Richo
Today, 12:54
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 45
Views: 618

Re: Battery interconnect sizing

Hmmm nickel plating aluminium.
Don't think I've seen that.

I'd still just nickel plate copper by choice for a busbar.

Aren't the headway ends nickel plated steel?
by Richo
Today, 12:44
Forum: Electric motors and controllers
Topic: Motor and controller info pls
Replies: 6
Views: 103

Re: Motor and controller info pls

Yeah that's what I thought at first but the ADC motor's I've seen have the vent+brushes at the rear of the motor. And the rear of the motor isn't a solid plate against the body. Its also short for an 8" motor. I was trying to find if there was info on the vitara conversion. Could always test the mot...
by Richo
Today, 12:37
Forum: Batteries, charging, management and monitoring
Topic: Disposing of old lithium batteries
Replies: 8
Views: 98

Re: Disposing of old lithium batteries

some ships carrying lithium batteries caught fire. ... The end result will most likely be that it is not viable to recycle the batteries in Australia until the volume increases beyond a certain level. We could just "short circuit" all of that and set fire to them now. :lol: Envirostream looks inter...
by Richo
Fri, 12 Jul 2019, 12:53
Forum: Electric motors and controllers
Topic: Motor and controller info pls
Replies: 6
Views: 103

Re: Motor and controller info pls

Hmmmmm
Are your sure this isn't one of those Goombi kits?!?
https://forums.aeva.asn.au/viewtopic.php?p=26891#p26891
by Richo
Thu, 11 Jul 2019, 12:39
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: Rolf's 1959 Puch SR150 scooter

I suggest getting some cardboard or foam and mocking up the motor in place.
Then you can see how much room is left for batteries.
I'd suspect this will determine what batteries you can use and how many.
by Richo
Wed, 10 Jul 2019, 13:01
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: Rolf's 1959 Puch SR150 scooter

Oh and your cycle life will go from 2,000 to 20,000.
Win - win.
by Richo
Wed, 10 Jul 2019, 12:59
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: 1959 Puch SR150 scooter

But if I can cruise at 65km/h, then That will do So given you're on a scooter not a Zero. You're only doing 65kph not 100kph. So the 1875Wh perhaps becomes 1500Wh BUT then add another 25% for margin this is back to 1875Wh. At 48V this is a 40Ah battery. Well here are the 40Ah LTO's. https://forums....
by Richo
Wed, 10 Jul 2019, 12:46
Forum: Technical and conversion discussion
Topic: EV Conversion battery requirements
Replies: 4
Views: 94

Re: EV Conversion battery requirements

From this I can only infer that one possible method of ensuring the HAZV isolation is to break up the battery pack into smaller packs, each isolated from each other, when the car is turned off. Is this an absolute requirement? No. Many of the production cars don't. Some of the hybrids only have one...
by Richo
Tue, 09 Jul 2019, 12:59
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: 1959 Puch SR150 scooter

My understanding is that speed is relative to voltage. Is this correct? Mostly. The motor you picked out has an RPM constant of 93.45 RPM/V. So the more voltage the more RPM. BUT the formula for power requirements versus speed for your scooter is exponential. So there will be a point that they inte...
by Richo
Tue, 09 Jul 2019, 12:43
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: 1959 Puch SR150 scooter

I'll check on how much space I have and see if I can fit 4 packs in I'm not too sure what you mean by packs. Normally batteries are put in parallel then connected in series. You shouldn't have a 48V pack that is connected in parallel with another 48V pack. If they are 15Ah each 4 packs is 60Ah whic...
by Richo
Tue, 09 Jul 2019, 12:38
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: 1959 Puch SR150 scooter

Rolf wrote:
Mon, 08 Jul 2019, 13:41
The tyres are 12 inch.

Once it runs, I'll play with the gearing
So I was more after the circumference of the tyre.
I can work out what the ratio should roughly be.
Normally the tyres have the width and aspect ratio printed on them.
by Richo
Tue, 09 Jul 2019, 12:32
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: 1959 Puch SR150 scooter

Rolf wrote:
Mon, 08 Jul 2019, 13:41
So max continuous current is 72A? (Based on 48V and 3500W)
I think 3.5kW was the output/mechanical power.
Input would probably be closer to 90A.
by Richo
Mon, 08 Jul 2019, 12:52
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: 1959 Puch SR150 scooter

Motor: Motoenergy ME0909 Ideally, I would like to be able to do 100Km/h, but hope I can set this up with gearing via chain cogs. The ME0909 is rated for 4.8HP/3.5kW continuous. Which perhaps around 65kph continuous. So you might be able to get to 100kph but you'd be hitting the peak of the motor. T...
by Richo
Mon, 08 Jul 2019, 12:38
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: 1959 Puch SR150 scooter

Round trip is 15Km. Can I get away with 2 packs of 15 @ 16Ah? but I based this estimation on Richo's comment in Soyachip's FZR250 thread. Oh Jeez people listen to me :oops: So I based it on the specs on the Zero which is similar to Soyachips bike. I'd kinda hope that it would fair slightly better f...
by Richo
Mon, 08 Jul 2019, 12:23
Forum: Members Machines
Topic: Rolf's 1959 Puch SR150 scooter
Replies: 12
Views: 87

Re: 1959 Puch SR150 scooter

Rolf wrote:
Mon, 08 Jul 2019, 11:17
I would like to be able to do 100Km/h, but hope I can set this up with gearing via chain cogs.
What size are the tyres?
by Richo
Wed, 26 Jun 2019, 13:27
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 45
Views: 618

Re: Battery interconnect sizing

:lol:

Yep it does
I made a small ali plate with the dremel and that was bad enough.

I agree phatter is better.
But I still think that there should be enough info here to actually work it out and not just rule of thumb it.
by Richo
Wed, 26 Jun 2019, 13:07
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 45
Views: 618

Re: Battery interconnect sizing

... I need to use double the cross section I’m using for copper But so far your reference is your 50mm2 copper cable. The current capability of a cable is relative to its insulation, temperature rise and how its mounted. This is NOT the same as the busbar. It doesn't have any insulation. So the onl...
by Richo
Wed, 26 Jun 2019, 12:35
Forum: For Sale/Wanted
Topic: Looking for unicorn droppings, budget 6k.
Replies: 14
Views: 373

Re: Looking for unicorn droppings budget 6k

Dan007a wrote:
Mon, 24 Jun 2019, 11:59
Tesla cells out of reach as of today( wife said no)
But they're just on the wall - well within reach.
FREE ENERGY :lol:

Sorry you just have to keep actively looking.
Something will turn up eventually.
by Richo
Wed, 26 Jun 2019, 12:33
Forum: For Sale/Wanted
Topic: Looking for unicorn droppings, budget 6k.
Replies: 14
Views: 373

Re: Looking for unicorn droppings budget 6k

Dan007a wrote:
Mon, 24 Jun 2019, 11:59
my ev...is looking for a 2nd hand 144v lithium batteries
Nope seems clear - lithium batteries, 2nd hand, 144V for his ev.
by Richo
Thu, 20 Jun 2019, 12:36
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 45
Views: 618

Re: Battery interconnect sizing

For small jobs you just end up with the Minimum Order Value.
Usually $65-100 depending on where you go.
by Richo
Wed, 19 Jun 2019, 12:56
Forum: Parts & Suppliers
Topic: Leaf cells
Replies: 40
Views: 7890

Re: Leaf cells

This is what I see on fleabay from the US so duties and taxes etc are added on top of this.

303178019365 $10356.75 360V 24kWh 48-cell
254243793381 $8897.65 360V 24kWh 48-cell
113168977255 $4430.43 7.6V 64Ah 8-cell
113326274993 $4036.60 7.6V 64A 8-cell
113168976693 $4094.96 7.6V 64A 8-cell
by Richo
Wed, 19 Jun 2019, 12:27
Forum: Parts & Suppliers
Topic: Leaf cells
Replies: 40
Views: 7890

Re: Leaf cells

What we really need is a Nissan dealer to get them in to sell it but turn the blind eye about which car its going in.
New cells.
Good price.
No import issues.
by Richo
Tue, 18 Jun 2019, 13:45
Forum: Parts & Suppliers
Topic: Leaf cells
Replies: 40
Views: 7890

Re: Leaf cells

How many are you interested in?
by Richo
Tue, 18 Jun 2019, 13:02
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 45
Views: 618

Re: Battery interconnect sizing

The height difference is 15mm but there is up to 2mm variation You also have to take off the thickness of the busbar. If you use 3mm then the difference would be 12mm. If you put a Washer at each end then your closer to 10mm. https://au.element14.com/ettinger/05-04-103/spacer-m4x10-ni/dp/1466853? A...
by Richo
Tue, 18 Jun 2019, 12:38
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 45
Views: 618

Re: Battery interconnect sizing

I keep thinking about those battery packs made up of lots of 18650 laptop cells and wondering how they get away with using small/thin tabs between the cells? What am I missing? Ahh they don't have much choice. And heat is related to cross sectional area AND length. If the lengths are short the loss...