Search found 1123 matches

by T1 Terry
Tue, 30 Jun 2020, 13:54
Forum: Renewable Energy and Storage (Non-EV)
Topic: Solar panels in series / parallel
Replies: 13
Views: 170

Re: Solar panels in series / parallel

The last 48v system we installed had 2 different capacity solar arrays but also ran 2 PIP inverters in parallel. We conected one array to one inverter and the other array to the second inverter. Each show a different harvest but they both go towards supplying the load and recharging the lithium batt...
by T1 Terry
Mon, 29 Jun 2020, 13:18
Forum: Renewable Energy and Storage (Non-EV)
Topic: Solar panels in series / parallel
Replies: 13
Views: 170

Re: Solar panels in series / parallel

As to the inputs of those MPPTs, generally there's no problem with putting two separate arrays of equal voltage in parallel, but any more than three strings in parallel will need fuses on each string. I think that's right @weber ? No. Any more than 2 strings in parallel requires a fuse in each stri...
by T1 Terry
Fri, 26 Jun 2020, 16:06
Forum: Renewable Energy and Storage (Non-EV)
Topic: Solar panels in series / parallel
Replies: 13
Views: 170

Re: Solar panels in series / parallel

If you have multiple strings of series connected panels in parallel, you will need blocking diodes at the point the series strings join together in parallel to stop the panel series strings in full sun back feeding into the shaded strings. I know some here argue that blocking diodes are not required...
by T1 Terry
Tue, 23 Jun 2020, 14:38
Forum: Technical and conversion discussion
Topic: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4
Replies: 66
Views: 1122

Re: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4

Yet another after thought, Maybe a 3 speed Borg Warner or Holden Trimatic auto trans from a V8? that way with my current Diff ratio's, i would have 1st gear for crawling off road and hill climbs, 2nd gear for running around town and 3rd for the Freeway. no matter which Auto trans i go with it will ...
by T1 Terry
Mon, 22 Jun 2020, 15:59
Forum: Technical and conversion discussion
Topic: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4
Replies: 66
Views: 1122

Re: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4

If you Google 2 speed EV transmission, there is a heap of sites to look through there and https://www.diyelectriccar.com/ have quite a few threads on EV transmissions

T1 Terry
by T1 Terry
Mon, 22 Jun 2020, 15:41
Forum: Batteries, charging, management and monitoring
Topic: Calb lifepo4 battery for half price ?
Replies: 5
Views: 259

Re: Calb lifepo4 battery for half price ?

Keep in mind that is USD not AUD and does not include GST and other possible landing costs, Australia is not mentioned as one of the countries where the import duties are included in the price. T1 Terry that is in AUD and free shipping to Oz LFP4.jpg In the next part down in "About customs duties a...
by T1 Terry
Fri, 19 Jun 2020, 15:48
Forum: Batteries, charging, management and monitoring
Topic: Calb lifepo4 battery for half price ?
Replies: 5
Views: 259

Re: Calb lifepo4 battery for half price ?

Keep in mind that is USD not AUD and does not include GST and other possible landing costs, Australia is not mentioned as one of the countries where the import duties are included in the price. The cell age in the box does not effect the useable capacity as a house power set up because the discharge...
by T1 Terry
Fri, 19 Jun 2020, 15:30
Forum: Technical and conversion discussion
Topic: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4
Replies: 66
Views: 1122

Re: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4

What are the diff ratios now? The most energy efficient gear in a manual box is 4th gear because that is direct drive, no losses through the cluster gear and the strongest selection in the gearbox. If you can find diff ratios for front and rear diffs that would see around 7,000 rpm at 110km/h in 4th...
by T1 Terry
Thu, 18 Jun 2020, 13:19
Forum: Technical and conversion discussion
Topic: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4
Replies: 66
Views: 1122

Re: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4

The losses through the cell inter-connectors is so small I doubt you could actually measure it accurately .... well as long as the terminals and links are polished up to remove any oxidisation and coated with a suitable anti oxidant paste such as Alminox.

T1 Terry
by T1 Terry
Wed, 17 Jun 2020, 14:31
Forum: Technical and conversion discussion
Topic: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4
Replies: 66
Views: 1122

Re: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4

About the only way you could utilise the inverter and electric motor heat for cabin heating is to modify the air conditioning to reverse cycle, but you would need to have air con in the first place. The reverse cycle air con can be anywhere up to COP 4, 4 times the heat energy for the electrical ene...
by T1 Terry
Wed, 17 Jun 2020, 13:16
Forum: Technical and conversion discussion
Topic: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4
Replies: 66
Views: 1122

Re: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4

Electric motors are nearly the opposite of ICE motor from what I can follow. A high revving ICE dies an early death and uses a lot of energy, low rpm in an electric motor that was designed for high rpm suffers the same fate. You can make an ICE motor lug at low rpm and save fuel, an electric motor w...
by T1 Terry
Tue, 16 Jun 2020, 11:40
Forum: Technical and conversion discussion
Topic: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4
Replies: 66
Views: 1122

Re: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4

If you plan to use a manual gearbox and a motor that spins to 10,000 rpm, will you be driving every where in 1st gear or second gear? A planetary set from an automatic gearbox would give you a reasonable reduction with less gear friction losses and maybe fed into a second planetary to give low range...
by T1 Terry
Mon, 15 Jun 2020, 13:00
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS Generator Input Issue
Replies: 9
Views: 187

Re: PIP-4048MS Generator Input Issue

Be mega careful, I've seen the smoke come out of appliances and PIP inverters when run on those Gentech units. If you put a CRO over the output wires you will be able to see just how many frequencies are there as well as the 50hz one. Might be safer to get a battery charger that can handle poor qual...
by T1 Terry
Thu, 11 Jun 2020, 14:00
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 604
Views: 56034

Re: Prelude conversion project - some questions

Would using one of those "E" spec coolants get around the problem?https://multimedia.3m.com/mws/media/199 ... -fluid.pdf No water to condense and cause problems and the coolant turns into vapour if it gets above its boiling point condensing again once it cools.

T1 Terry
by T1 Terry
Thu, 11 Jun 2020, 13:35
Forum: Technical and conversion discussion
Topic: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4
Replies: 66
Views: 1122

Re: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4

From bad experiences, I'd recommend leaving a 12v battery in the circuit after the DC to DC converter. The DC to DC has a limited output and generally, exceeding this output or even running close to the maximum output for extended periods results in the DC to DC converter failing. The battery in par...
by T1 Terry
Thu, 11 Jun 2020, 12:58
Forum: Technical and conversion discussion
Topic: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4
Replies: 66
Views: 1122

Re: Pro's & Con's of Converting My EFi 2000 Toyota Hilux 4x4 into an EV 4x4

Just to clear up something, AGM, flooded cell, Gel cell, calcium/calcium and lead crystal, are all lead acid batteries and all fall apart internally is subject to excess vibrate. All my lead acid batteries are being gradually replaced by aged LFP cells built into a 4 cell battery. Heaps more CCA and...
by T1 Terry
Thu, 11 Jun 2020, 12:47
Forum: Electric motors and controllers
Topic: Hyper 9 and suitable gearbox
Replies: 30
Views: 669

Re: Hyper 9 and suitable gearbox

No idea of the length, but the 2 sp powerglide is a very popular box for all sorts of alternative installs and there are a few companies that re-manufacture to suit EV use. There is thread here from 10 yrs ago https://forums.aeva.asn.au/forums/viewtopic.php?t=1028, I haven't read through it but at l...
by T1 Terry
Wed, 10 Jun 2020, 09:47
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS Generator Input Issue
Replies: 9
Views: 187

Re: PIP-4048MS Generator Input Issue

Have the same issue with a paralleled pair of PIP 48/50 inverter/chargers in an off grid house install. The generator is a Kobota 7kW? from memory and the frequency reading on the PIP gradually climbs along with the voltage until it is rejected, a few mins later it goes through the same routine. If ...
by T1 Terry
Tue, 09 Jun 2020, 14:02
Forum: Electric motors and controllers
Topic: Hyper 9 and suitable gearbox
Replies: 30
Views: 669

Re: Hyper 9 and suitable gearbox

The after market plug in transmission controls allow for reprogramming line pressures, shift speeds determined by input shaft and/or output shaft, or manual select if that suits better. Being a late model transmission you would also have a lock up converter that could be boosted up to higher torque ...
by T1 Terry
Wed, 03 Jun 2020, 13:06
Forum: Electric motors and controllers
Topic: Hyper 9 and suitable gearbox
Replies: 30
Views: 669

Re: Hyper 9 and suitable gearbox

Have you thought about keeping the auto and modifying the torque converter to direct drive? there is also an upgrade to add a small electric pump to keep the pressure up while you are stopped at the lights or stop/go traffic because the motor would not be spinning so the front pump would not be driv...
by T1 Terry
Sat, 30 May 2020, 11:58
Forum: General EV Discussion
Topic: EV subsidies - When will Australia learn?
Replies: 8
Views: 237

Re: EV subsidies - When will Australia learn?

I'd rather see the $$ invested in establishing a lithium processing plant and cell manufacture here in Australia first. Then a flow on subsidy for Australian EV manufacturers that use the Australian produced cells. They say they want to get people back to work and create jobs, wouldn't this move Aus...
by T1 Terry
Thu, 28 May 2020, 15:54
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 95
Views: 8651

Re: jonescg's home battery storage system

Thanks for the offer Paul, but the BMS control boxes we make are designed around the functions of the Junsi cell log and its alarm feature. Looks like I'll be redesigning the whole set up to use a different cell monitor and I'll upgrade it to communicate via Bluetooth to a smart phone. The copy one ...
by T1 Terry
Thu, 28 May 2020, 09:41
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 95
Views: 8651

Re: jonescg's home battery storage system

download/file.php?id=2427
Where did you find the two Junsi loggers? I've been searching for a supplier for over 12mths with zero luck. The factory stopped making them over 2yrs ago and all my usual supply contacts have run out of stock.

T1 Terry
by T1 Terry
Wed, 27 May 2020, 13:30
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 604
Views: 56034

Re: Prelude conversion project - some questions

I would suspect the "bypass" failing as the most likely cause. A short or cell failure would have pulled the cell voltage down much lower than 3v and any attempt to recharge would not help. It looks as though it is a small discharge rate and that is more likely to be "bypass resistor" slowly drainin...
by T1 Terry
Wed, 27 May 2020, 11:14
Forum: Renewable Energy and Storage (Non-EV)
Topic: 12v lithium batteries can't be paralleled?
Replies: 20
Views: 594

Re: 12v lithium batteries can't be paralleled?

Hi, The voltage drop under load says either the cells or the BMS or both are not up to a high current draw. If it really did share the load across both batteries it would only be 85 amps per battery, 85 amps from a 120Ah battery is roughly a 0.7CA draw per battery, the cells should be able to maint...