Search found 3671 matches

by Johny
Wed, 18 Jul 2018, 12:59
Forum: Members Machines
Topic: Brendon_m Moke
Replies: 36
Views: 333

Re: Brendon_m Moke

Is that 13kw continuous at an RPM that you will be comfortable with? IE will you be whining along at 80kmh in 2nd gear. Mini gearboxes can be loud.
by Johny
Wed, 18 Jul 2018, 07:21
Forum: Members Machines
Topic: Brendon_m Moke
Replies: 36
Views: 333

Re: Brendon_m Moke

While wheel motors would be great I can't see any engineer signing off on them without exhaustive testing - brakes etc. Getting the moke gearbox an oil reservoir of its own sounds like a good way to go - or an alternative very small car donor gearbox/diff.
by Johny
Tue, 17 Jul 2018, 12:56
Forum: Members Machines
Topic: Brendon_m Moke
Replies: 36
Views: 333

Re: Brendon_m Moke

I reckon a moke will make a fantastic EV. Plenty of room for batteries in the sides (as well as engine bay). The trick is finding a suitable gearbox/diff for it as I'm not sure you could isolate the existing mini gearbox from the ICE. Looking on with interest.
by Johny
Fri, 29 Jun 2018, 10:53
Forum: Mitsubishi
Topic: PHEV Flood Fail
Replies: 9
Views: 380

Re: PHEV Flood Fail

I know from an insurance point of view that if water enters the cabin over the sill then the car is a statutory write off. If you take into account the bow wave while driving through water then 400mm is a reasonable figure to give to those who can't figure it out themselves. Easy disclaimer. I wish ...
by Johny
Thu, 28 Jun 2018, 09:57
Forum: Mitsubishi
Topic: PHEV Flood Fail
Replies: 9
Views: 380

Re: PHEV Flood Fail

I would say take this to the dealer with an eye to having it up on a hoist for very careful visual examination for missing or displaced seals around everything electronic. Also - mainly - check seals around sensors for ABS and any electrics around actual wheels. If you're keen, check wheels yourself...
by Johny
Fri, 22 Jun 2018, 11:24
Forum: Electric motors and controllers
Topic: Oversized RC BLDC Outrunners
Replies: 13
Views: 793

Re: Oversized RC BLDC Outrunners

Why couldn't this be used in a small car... ~1100kg... 50kw is enough to get it going, maybe not fast... ... I'm looking for CHEAP alternatives for a small car conversion. 80kph, 50km range would be fine. 50kw is plenty for a commuter. My daily drive can be held down to 30kw if I'm careful - mainly...
by Johny
Sat, 09 Jun 2018, 21:28
Forum: Mitsubishi
Topic: i-miev DC/DC converter failure, not what we expected.
Replies: 18
Views: 826

Re: i-miev DC/DC converter failure, not what we expected.

Good troubleshooting. That resistor has not just I over heated - it's catastrophically expired. That's unusual for a resistor unless it's maybe an inrush current limiter and the DC-DC switch stuff further along is the culprit. The resister simply acted like a fuse.
by Johny
Fri, 08 Jun 2018, 10:35
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

Adverse Effects wrote:
Fri, 08 Jun 2018, 08:38
ChemicalHorizon wrote:
Thu, 07 Jun 2018, 21:25
Richo wrote:
Thu, 07 Jun 2018, 12:46
5x the energy density as the lithium rechargeable.
Shut up and take my money! How good will my hand stick vacuum be with these things in it!
noooooo careful you will suck the carpet off the floor
Yep - there would be a sucker involved somewhere...
by Johny
Tue, 05 Jun 2018, 08:00
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

Why not just use one of these? www.oreillyauto.com/flux-capacitor?q=121g This is such a common mistake. Flux capacitors don't store energy as electricity, they store chronotons. These are released in a sub millisecond burst when the device exceeds a certain velocity with respect to a large nearby m...
by Johny
Mon, 28 May 2018, 15:39
Forum: Renewable Energy and Storage (Non-EV)
Topic: Lead Crystal batteries for non-EV application?
Replies: 4
Views: 359

Re: Lead Crystal batteries for non-EV application?

Thanks Terry. Great first hand info.
by Johny
Wed, 23 May 2018, 10:29
Forum: Mitsubishi
Topic: Wanting to get my iMiEV serviced. Advice?
Replies: 18
Views: 951

Re: Wanting to get my iMiEV serviced. Advice?

You are entering winter weather temperatures here in Melbourne which probably accounts for the range reduction.
by Johny
Mon, 21 May 2018, 12:03
Forum: General EV Discussion
Topic: Royal Wedding EV
Replies: 4
Views: 298

Re: Royal Wedding EV

Can you imagine the conversion. No cost limit, no compromises - sigh!
by Johny
Fri, 11 May 2018, 12:32
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

Haha - previously they really were selling snake oil:

"Already on bail accused of selling snakes with “medicinal qualities” for more than $25,000 each, the pair told potential victims they were developing a device that could be used to generate “electricity from thunderbolts”.
by Johny
Thu, 03 May 2018, 09:11
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

whysomean wrote:
Thu, 03 May 2018, 07:16
At least this wouldn't happen with the supercaps!

https://www.lloydsloadinglist.com/freig ... uo8D4iFPAQ
I think I prefer your new fonzee handle/alias.
by Johny
Thu, 03 May 2018, 09:09
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

fonzee wrote:
Thu, 03 May 2018, 07:28
hey @Richo, you should seriously check your facts before making false claims about other business'.
Yeah Richo. fonzee has only posted this once so he hasn't seen how devilishly cunning you can be with facts.😜
by Johny
Sat, 28 Apr 2018, 05:15
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

TCryptos wrote:
Sat, 28 Apr 2018, 05:04
Truly amazing.
Careful there, @whysomean, your smokescreen is slipping a little :roll:
...inability to detect sarcasm.
by Johny
Sat, 21 Apr 2018, 10:09
Forum: Mitsubishi
Topic: i-MiEV not charging, high voltage warning light and battery
Replies: 62
Views: 1970

Re: i-MiEV not charging, high voltage warning light and battery

The DC/DC converter and the AC charger is one unit in the I-Miev... That explains a high cost. Considering that it is a specialist part that the manufacturer has had to keep a stock of, $4000 does not seem so disproportionate to other moderately complex car parts sourced from original manufacturers...
by Johny
Thu, 12 Apr 2018, 15:31
Forum: Renewable Energy and Storage (Non-EV)
Topic: Lead Crystal batteries for non-EV application?
Replies: 4
Views: 359

Re: Lead Crystal batteries for non-EV application?

Snake oil. They're c$%p. Check some marine forums.
Edit: Treat any videos or posts by Martin Lorton with scepticism.
by Johny
Sun, 25 Mar 2018, 16:23
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

@Supercaps reminds me of a person who poses a complicated riddle with a stupid know-it-all look on their face and the only reason they know the answer is that they were told.
If it's so amazing -and true - just spit it out.
by Johny
Sun, 25 Mar 2018, 07:28
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 57
Views: 2622

Re: Prelude conversion project - some questions

You're right. I missed the fuse in the middle of the pack.
I have mine so the main traction fuse and aux fuses come off the pack - not fuses in series. That's just a preference though. Good that the charger has O/P relays. All good.
by Johny
Sun, 25 Mar 2018, 05:59
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 57
Views: 2622

Re: Prelude conversion project - some questions

Looks OK but 2 comments.
1. It needs a fuse to the inverter.
2. If you are thinking of using a contractor on the charger DC side ensure the charger can handle being re-connected without damage. Some chargers can not connect without pre-charge.
by Johny
Fri, 23 Mar 2018, 07:27
Forum: BMW
Topic: i3 BEV Gen 1: hill climbing energy investment?
Replies: 7
Views: 619

Re: i3 BEV Gen 1: hill climbing energy investment?

So glad it went well. When you say you "couldn't maintain more than 82 km/h" was that because you were keeping to a set power consumption?
by Johny
Wed, 21 Mar 2018, 07:59
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

That doesn't explain the sudden reading of 54 Volts (or thereabouts) when the short was removed.
by Johny
Tue, 20 Mar 2018, 17:22
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

I totally missed that this was a riddle/challenge. If there is no DC/DC and it REALLY is super caps then it follows that it is switching series/parallel modes to maintain voltage. The price still doesn't pass the reasonableness test.
by Johny
Sat, 17 Mar 2018, 05:10
Forum: Batteries, charging, management and monitoring
Topic: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale
Replies: 341
Views: 17098

Re: Arvio 3.5kWh drop-in-battery-replacement supercapacitor on sale

The super cap module internal resistance of 6mOhms explains the jump to match the power supply voltage IMO. So what are the questions that this raises? No questions - just some annoying facts. A 6 mOhm internal resistance would result in a jump of 0.0462 volts @7.7 Amps. The jump is more easily exp...