Search found 954 matches

by T1 Terry
Sat, 28 Sep 2019, 12:17
Forum: Nissan Leaf
Topic: Leaf in the tropical north
Replies: 12
Views: 446

Re: Leaf in the tropical north

Something I've always wondered, if heat rises and cold falls, wouldn't blowing cold air above the battery pack and exhausting it below the battery pack a better method for cooling? I see all these cooling plates the cells sit on, but wouldn't that be the coolest part of the cell? Tesla run pipes up ...
by T1 Terry
Sat, 28 Sep 2019, 09:51
Forum: Electric motors and controllers
Topic: Nidec In wheel Motor
Replies: 3
Views: 242

Re: Nidec In wheel Motor

20" wheels, sound suited to truck 22"wheels eh. Isn't that truck company Tesla now owns building just that? A hub motor capable of only 50kW would revolutionise the trucking industry. A prime mover has 4 rear wheels, that's 200kW on the ground, add a dolly to tow a trailer, that has 6 wheels on the ...
by T1 Terry
Wed, 25 Sep 2019, 15:38
Forum: Renewable Energy and Storage (Non-EV)
Topic: Sumry Inverter-Charger in Caravan
Replies: 7
Views: 188

Re: Sumry Inverter-Charger in Caravan

An RVD, not an RCD because an RCD will only work if there is an earth/neutral bond before the RCD. If you are never going to plug into shore power that will have its own RCD and earth/neutral bond, then get your sparkie to make the earth/neutral bond after the inverter but before the RCD. The proble...
by T1 Terry
Wed, 25 Sep 2019, 10:41
Forum: Renewable Energy and Storage (Non-EV)
Topic: Is anyone using an arc welder with an offgrid system
Replies: 104
Views: 3620

Re: Is anyone using an arc welder with an offgrid system

Skip the copper stake bit, that is to make a connection back to the transformer or the power generator. You have the power generator on board in the form of an inverter. If the generator is a plug in device and has a fault to the metal frame and that is sitting on the ground, the stake will make a c...
by T1 Terry
Sat, 21 Sep 2019, 09:38
Forum: Batteries, charging, management and monitoring
Topic: Cooling chargers?
Replies: 10
Views: 232

Re: Cooling chargers?

Just a thought, they made small diameter paper filters for minis and other Leyland product as well as aftermarket filters, mainly aimed for use with SU and CD Stromberg type carburettors. One of those on Richard's drum fan suggestion would fit easy enough, but if you have a 12vdc supply available yo...
by T1 Terry
Fri, 20 Sep 2019, 10:07
Forum: Batteries, charging, management and monitoring
Topic: Cooling chargers?
Replies: 10
Views: 232

Re: Cooling chargers?

Thanks T1 Terry. Good ideas! I hadn't thought of air filters either so this morning I will be off to my local car spare parts place to see what they have. Thanks again Paul Something simple like the round air filter from the old 6cyl Holden is a big enough area to fit fans inside and cheap as chips...
by T1 Terry
Thu, 19 Sep 2019, 15:46
Forum: Batteries, charging, management and monitoring
Topic: Cooling chargers?
Replies: 10
Views: 232

Re: Cooling chargers?

My TC charger has a huge heatsink on top with 2 x 12v fans wired in series. I ended up finding a wall wart that put out 12vdc so I could add it to the 240vac power supply side from the outside plug in point in the side of the car. Now the fan starts up when I plug it in rather than when it feels lik...
by T1 Terry
Thu, 19 Sep 2019, 12:57
Forum: General EV Discussion
Topic: AC 3 phase motor fee spinning
Replies: 10
Views: 299

Re: AC 3 phase motor fee spinning

Ahhh.... just read your last post Richard, 245vdc battery might be a bit over the top then :lol: I could drive it in mostly 2nd and 3rd gear and just use 4th for highway cruising with a possible 160km/h and still have good torque to get it/hold it there .... be cool for drag racing eh

T1 Terry
by T1 Terry
Thu, 19 Sep 2019, 12:52
Forum: General EV Discussion
Topic: AC 3 phase motor fee spinning
Replies: 10
Views: 299

Re: AC 3 phase motor fee spinning

Whoops - I see the mistake - sorry divided by 0.82 not multiply :oops: Total ratio should be more like 4.80:1 4200 RPM would be 874.5RPM at the wheel. Which comes out to 106kph. So even having the nominal at 80kph/3169RPM that's 100Vac/142Vdc What controller was this going on? Big Mouses? I have a ...
by T1 Terry
Wed, 18 Sep 2019, 10:38
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28790

Re: Prelude conversion project - some questions

What if you flipped the cooler circuits over so they all met up in the centre. Then you could feed the cold in at the 3rd pack from the end and let it split both ways on each side. That way 2 packs on each loop from cold and all feeding into the hot return.

T1 Terry
by T1 Terry
Tue, 17 Sep 2019, 16:18
Forum: General EV Discussion
Topic: AC 3 phase motor fee spinning
Replies: 10
Views: 299

Re: AC 3 phase motor fee spinning

My '74 Kombi has a 2.0ltr gearbox, one of the 5 rib super strong case models, these have the highest diff ratio of all the air cooled engine models. These are the actual road speed to rpm for each different model gearbox as they left the factory. '67 and before had reduction hubs between the gearbox...
by T1 Terry
Mon, 16 Sep 2019, 15:59
Forum: General EV Discussion
Topic: AC 3 phase motor fee spinning
Replies: 10
Views: 299

Re: AC 3 phase motor fee spinning

The motor I'm looking at using is a rewound to 48v 3 phase WEG132 motor. First asked about it here http://forums.aeva.asn.au/viewtopic.php?f=34&t=4267 then again here http://forums.aeva.asn.au/viewtopic.php?f=34&t=4135&p=50960&hilit=VW+Kombi#p50960 This is an induction motor so all should be fine, t...
by T1 Terry
Mon, 16 Sep 2019, 13:43
Forum: General EV Discussion
Topic: AC 3 phase motor fee spinning
Replies: 10
Views: 299

AC 3 phase motor fee spinning

I want to start converting my VW Kombi to electric, but a few issues have held me back. The primary one is I want to tow it behind our motorhome with an "A" frame rather than on a trailer. One of the problems is the Kombi gearbox can not be towed for long periods in neutral. Much like most manual ge...
by T1 Terry
Fri, 13 Sep 2019, 12:07
Forum: Members Machines
Topic: Brendon_m Moke
Replies: 154
Views: 10516

Re: Brendon_m Moke

What colour for the roll bar and the front? Certainly looking good but much harder to hide it or get a guaranteed no block in parking spot. They know you won't risk scratching a pretty paint job, but the recycled urban camo look certainly give you lots of parking room and makes the other driver thin...
by T1 Terry
Sat, 07 Sep 2019, 11:39
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 125
Views: 6904

Re: PIP-5048MK inverter

i can surely see that i was a little too greedy thinking i could go for a 4s2p setup for this inverter, and that might explain why i was kind of stable in my 3s2p setup with no dips, and now when i put on 2 more panels i got the dips. Actually it is running perfectly fine on a complete sunny day, b...
by T1 Terry
Sat, 07 Sep 2019, 11:22
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 125
Views: 6904

Re: PIP-5048MK inverter

Yes. Tindo 275 W panels are 60 cell, so 3S is fine for a 145 V max solar charge controller. But many panels are 72 cell these days, and 3S causes too-high panel voltages. I know you understand that very well, Terry, but it seems that some others need it spelled out. Agreed, in this case the reply w...
by T1 Terry
Fri, 06 Sep 2019, 09:12
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 125
Views: 6904

Re: PIP-5048MK inverter

ok, that was my own fault, i had put on more pv panels and now i exceeded the specs on the mk (150VoC) and above 115 MPPT, then i saw a lot of dips, now i am back to 3x40VoC and apprx 92-ish MPPT, now everything is back to normal, Now i have two panels nor beeing used, any one can recommend how i g...
by T1 Terry
Thu, 05 Sep 2019, 12:26
Forum: Scooters, mopeds and electric toys
Topic: Upgrading 24V mobility scooter from PB to LiFePO4 batts
Replies: 16
Views: 462

Re: Upgrading 24V mobility scooter from PB to LiFePO4 batts

I did one quite a few yrs back, it was one of those fold up units you could take on a plane. All was good until the controller dropped its bundle. The repairer claimed it was because the lithium battery could limit its current ...... a way of getting around that the controller couldn't handle the co...
by T1 Terry
Mon, 02 Sep 2019, 14:10
Forum: Charging Infrastructure
Topic: Solar day parking with AC charging
Replies: 13
Views: 379

Re: Solar day parking with AC charging

A combined sales thing aimed at those who want to save the planet? Pay for a parking spot that has a solar feed charging facility in a section that is for plug in EV's only. You know that if you drive to that level and that section there will be a parking spot available because those in the ICE vehi...
by T1 Terry
Mon, 02 Sep 2019, 09:41
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28790

Re: Prelude conversion project - some questions

The red/green flash means the battery is not connected. My Prius plug-in does it frequently so I've learned to actually check that every time I plug in the 240vac from the motorhome. Because the motorhome PIP inverter has an eco mode that shuts off the 240vac side until it sees a load, simply pluggi...
by T1 Terry
Mon, 02 Sep 2019, 09:20
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 34
Views: 2560

Re: Tesla PW2

So a house battery the same voltage as the EV battery? Voltage regulation and cell high/low voltage protection would still be required for both batteries along with a method of switching off the charging to each battery bank as well as the discharging to each battery bank. So 2 BMS units dedicated t...
by T1 Terry
Sun, 01 Sep 2019, 10:53
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 34
Views: 2560

Re: Tesla PW2

I have been thinking about how to do this. As you said most solar panel strings would be able to feed the car battery directly. And most solar inverters I assume would have a 400 or so volt bus. So it may be as simple as just connecting the car battery to the internal bus and reprogramming the inve...
by T1 Terry
Sun, 01 Sep 2019, 10:44
Forum: Renewable Energy and Storage (Non-EV)
Topic: 3 phase supply but no 415v connections
Replies: 20
Views: 481

Re: 3 phase supply but no 415v connections

Hmmm..... that 3 phase hybrid inverter won't do the job if it can only provide 3.3kW because there is a single phase monster ducted air con unit that can suck a peak 26.4 amps... That's OK, just don't put it on the essential loads output. Because it's a hybrid, the grid will supply some of it and s...
by T1 Terry
Sat, 31 Aug 2019, 14:58
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 34
Views: 2560

Re: Tesla PW2

Plan C would be to have two electric cars with 40kwh+ battery each and when supply is too low run off the car battery. When car is getting low you can go to a fast charger and recharge. If you use say 12kwh/day your car batteries would keep you going for about a week. Then you need the inverter tha...
by T1 Terry
Sat, 31 Aug 2019, 11:54
Forum: Renewable Energy and Storage (Non-EV)
Topic: 3 phase supply but no 415v connections
Replies: 20
Views: 481

Re: 3 phase supply but no 415v connections

Hmmm..... that 3 phase hybrid inverter won't do the job if it can only provide 3.3kW because there is a single phase monster ducted air con unit that can suck a peak 26.4 amps according to the specs label. 3.3kW is barely enough to feed a 15 amp supply single phase. The next option seems to be this ...