Search found 220 matches

by brendon_m
Today, 10:53
Forum: Tesla EVs
Topic: Model 3 lowest cost in Aus?
Replies: 4
Views: 43

Re: Model 3 lowest cost in Aus?

Well the configurator in WA comes in at $72109. Delivered and ready to drive
Screenshot_2019-06-18-10-54-33-325_com.android.chrome.png
Screenshot_2019-06-18-10-54-33-325_com.android.chrome.png (192.68 KiB) Viewed 39 times
by brendon_m
Yesterday, 19:40
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 32
Views: 167

Re: Battery interconnect sizing

A lot of the cells are in parallel so each cell only sees a small portion of the current. Each of your cells will see 1/2 the total current but from 1 pair of cells to next will be the whole kabootle Got it, thanks for clarifying! Just to clarify further it's not exactly half because you have diffe...
by brendon_m
Yesterday, 18:17
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 32
Views: 167

Re: Battery interconnect sizing

A lot of the cells are in parallel so each cell only sees a small portion of the current.
Each of your cells will see 1/2 the total current but from 1 pair of cells to next will be the whole kabootle
by brendon_m
Sun, 16 Jun 2019, 06:44
Forum: Mitsubishi
Topic: Servicing Imiev (90K service) K Mart??
Replies: 4
Views: 81

Re: Servicing Imiev (90K service) K Mart??

My work used to do bonuses, it was something like 3% of the profit you created and we would get it every 2nd payday. It was nice but wasn't going to buy a Ferrari. Maybe it was just me but I never even thought about the bonus when talking to customers. As far as I know no-one else ever thought about...
by brendon_m
Sat, 15 Jun 2019, 13:45
Forum: Batteries, charging, management and monitoring
Topic: Damn Chargers!
Replies: 20
Views: 461

Re: Damn Chargers!

Paul9 wrote:
Sat, 15 Jun 2019, 12:32
18A is the DC output at 140.4v DC. The AC input current on 240VAC is 20A.
Probably mistaking 240v for 110v.
by brendon_m
Sat, 15 Jun 2019, 07:23
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 32
Views: 167

Re: Battery interconnect sizing

soyachips wrote:
Sat, 15 Jun 2019, 06:14
Aluminum has 61 percent of the conductivity of copper
2/3 vs 61%.
Im happy with my memory from tafe.
soyachips wrote:
Sat, 15 Jun 2019, 06:14

So going with aluminium is actually lighter :?
But it will be harder to bend because it'll be thicker
by brendon_m
Sat, 15 Jun 2019, 05:36
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 32
Views: 167

Re: Battery interconnect sizing

Is the plan to have a square on the bottom that's 2 holes x2 holes and strips that bend up and down across the top that are 4x1?
Or maybe 4x1 strips along the bottom with 2x1s on top joining 2 10ah cells and separate one for 15ah cells?
by brendon_m
Fri, 14 Jun 2019, 22:26
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 32
Views: 167

Re: Battery interconnect sizing

After, soft seal would get in the way or making good contact.
For full disclosure, I have just finished making up my bus bars and due to the way my pack will be and I'm going to double stack the bars I had to flatten 52x 300mm bars and drill 312 holes. I don't wish that on anyone.
by brendon_m
Fri, 14 Jun 2019, 22:12
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 32
Views: 167

Re: Battery interconnect sizing

Not my calculations but My calcs yield, ito of number of an equivalent number of #12 solid wire: 1/2 copper, thin wall (red): 10 wires. 1/2 copper, thk (blue): 15 wires 3/4 copper, thin: 22 wires 3/32 x 3/4 busbar: 15 wires Figger 30+ amps per wire (uninsulated, and proly a conservative number), and...
by brendon_m
Fri, 14 Jun 2019, 22:08
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 32
Views: 167

Re: Battery interconnect sizing

Copper doesn't need to be tinned, that just helps with stopping corrosion.
Im just going to use copper pipe from bunnings, squashed flat and drilled. I'll be using dielectric grease and soft seal to stop corrosion
by brendon_m
Fri, 14 Jun 2019, 22:00
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 32
Views: 167

Re: Battery interconnect sizing

Oh and depending on the width of the bars but around 2mm minimum thickness for copper and aluminium is 2/3 as good a conductor. If in doubt go thicker when it comes to wiring (and bus bars in this case). Also the bus bars will be sinking heat from the cells so more meat can help there too
by brendon_m
Fri, 14 Jun 2019, 21:45
Forum: Batteries, charging, management and monitoring
Topic: Battery interconnect sizing
Replies: 32
Views: 167

Re: Battery interconnect sizing

Yes the interconnects will be carrying full battery current.
Thin sheets stacked up are better for a few reasons but the main one for diyers is probably flexibility.
Any reason for aluminium and not copper? Copper is a much better conductor
by brendon_m
Fri, 14 Jun 2019, 16:30
Forum: Technical and conversion discussion
Topic: Direct Drive options
Replies: 22
Views: 223

Re: Direct Drive options

I worked out to do 100km/h on a set of 13 inch wheels the axles will be spinning around 1000rpm. Those motor/trans appear to max out at 400ish rpm. The power levels of top level motor would be enough to be a daily driver but you won't win any drag races against a tesla. I wonder if you can get just ...
by brendon_m
Fri, 14 Jun 2019, 08:56
Forum: Renault
Topic: Charging e-mail From Renault Australia
Replies: 18
Views: 306

Re: Charging e-mail From Renault Australia

Just spitballing ideas but maybe you get a higher state of charge (and thus shorter battery life) with the slow chargers because you "creep" up to the fully charged point vs smashing in charge and having the charger cut out sooner because the surface charge of the cells is higher but the actual stat...
by brendon_m
Thu, 13 Jun 2019, 17:36
Forum: Technical and conversion discussion
Topic: Total NOOB to convert Classic Mini
Replies: 45
Views: 4261

Re: Total NOOB to convert Classic Mini

Hmm, true. I guess taking to a lithium battery pack with a plasma cutter will have to fulfill my destructive tendencies
by brendon_m
Thu, 13 Jun 2019, 12:25
Forum: Technical and conversion discussion
Topic: Total NOOB to convert Classic Mini
Replies: 45
Views: 4261

Re: Total NOOB to convert Classic Mini

They use 15inch+ petrol power grinders to cut cars in half for half cuts, what a sight to see when the guy doing an EV goes through the battery in the floor :lol:
by brendon_m
Thu, 13 Jun 2019, 10:43
Forum: Technical and conversion discussion
Topic: Total NOOB to convert Classic Mini
Replies: 45
Views: 4261

Re: Total NOOB to convert Classic Mini

Tremelune wrote:
Thu, 13 Jun 2019, 02:21
OEM cars are the bang-for-buck champs for road-going EV conversion components these days
Problem there being that EVs are rare as hens teeth in Australia. So getting one from a wrecker is a hard find.
by brendon_m
Tue, 11 Jun 2019, 20:30
Forum: Technical and conversion discussion
Topic: Direct Drive options
Replies: 22
Views: 223

Re: Direct Drive options

I saw the ones in the first link and they look really good, but I was too scared to ask the price.
The second link is just a golf cart rear end, not really suitable for on road stuff.
by brendon_m
Mon, 10 Jun 2019, 10:54
Forum: Hyundai
Topic: Hyundai Sales Tactics
Replies: 28
Views: 242

Re: Hyundai Sales Tactics

I had a bit more of a look at the service schedules Leaf - no services required Imiev - doesn't exist Zoe - doesn't exist Kona - exists, but not with an electric motor Ionic - no services required Model x - no services required Model 3 - doesn't exist Model s 2.2hrs per service every 20k/12 months (...
by brendon_m
Mon, 10 Jun 2019, 06:32
Forum: Hyundai
Topic: Hyundai Sales Tactics
Replies: 28
Views: 242

Re: Hyundai Sales Tactics

The issue with Autolink is it is messy and poorly thought out, you lose the OBD port to the Autolink. So you can't use things such as torque. Be easier to just build it into the car and then activate it on purchase. Then you're not hogging the OBD port. I don't know about the Australian release but...
by brendon_m
Sun, 09 Jun 2019, 17:44
Forum: Hyundai
Topic: Hyundai Sales Tactics
Replies: 28
Views: 242

Re: Hyundai Sales Tactics

Not sure what your poit is about everyday mechanics, pretty sure no manufacturer can insist that servicing be done by themselves. They can't, but they definitely do. I've had them say it straight to my face when I bought my car, dealers have also told people I know that fitting accessories has to b...
by brendon_m
Sun, 09 Jun 2019, 08:34
Forum: Hyundai
Topic: Hyundai Sales Tactics
Replies: 28
Views: 242

Re: Hyundai Sales Tactics

it runs on Hydrogen. However was lost for words when we asked where we can fill it....which is only at a very select, very few number of hydrogen stations in Australia. You don't want to go to one of 3 stations in the country that aren't even open yet?, not good enough for you?. Some people just ha...
by brendon_m
Fri, 07 Jun 2019, 20:51
Forum: General EV Discussion
Topic: Members thoughts on the different EV brands
Replies: 4
Views: 107

Re: Members thoughts on the different EV brands

I wouldn't say no if you gave me a one but teslas arent that good. The design is fantastic but the build quality is the same as any other American built car (poor). They have a long way to go in refining the build process but because of the lack of real competition it currently doesn't matter. The z...
by brendon_m
Fri, 07 Jun 2019, 19:17
Forum: Technical and conversion discussion
Topic: Direct Drive options
Replies: 22
Views: 223

Re: Direct Drive options

I tossed up the idea of a golf cart drive line for my moke but they were all a bit small and all were live axle (no good for front wheel drive.) I wanted to go direct drive but couldn't find anything suitable so I just made the gearbox work. I did come across some dedicated ev gearboxs for front whe...