Search found 1149 matches

by T1 Terry
Sat, 17 May 2014, 19:34
Forum: For Sale/Wanted
Topic: EOI: Catavolt custom induction motor and core
Replies: 7
Views: 1105

EOI: Catavolt custom induction motor and core

what would be the effect of using a low/high voltage with this motor, what RPM do you expect to achieve with the 376v pack?

T1 Terry
by T1 Terry
Sat, 17 May 2014, 05:06
Forum: For Sale/Wanted
Topic: EOI: Catavolt custom induction motor and core
Replies: 7
Views: 1105

EOI: Catavolt custom induction motor and core

What pack voltage and controller would you recommend to use with this motor? Would the motor be big enough for a VW Kombi conversion?

T1 Terry
by T1 Terry
Wed, 14 May 2014, 20:07
Forum: General EV Discussion
Topic: Range extender - Direct charging from a generator?
Replies: 4
Views: 861

Range extender - Direct charging from a generator?

With the motorhome concept, recharging would be via generator and solar, time not really being an issue, so the gen set is a back up really, not the main source of power. The battery pack will be reasonably substantial, enough for say 200km min travel between recharges. I'm trying to toss up between...
by T1 Terry
Wed, 14 May 2014, 18:38
Forum: General EV Discussion
Topic: Range extender - Direct charging from a generator?
Replies: 4
Views: 861

Range extender - Direct charging from a generator?

Thankyou Johny, so a 184 cell pack would be just uner 3.2v per cell, a 180 cell pack around 3.25v per cell, 170 cell pack around 3.44v per cell, that would be around the limit without needing additrional control for cell run away. i could then pulse charge the 400v pack (120 cells) from this 170v pa...
by T1 Terry
Wed, 14 May 2014, 17:17
Forum: General EV Discussion
Topic: Range extender - Direct charging from a generator?
Replies: 4
Views: 861

Range extender - Direct charging from a generator?

I recently saw an ad for an exrental 20kva genset, it's a bit of a monster, but if the 415vac 3 phase was fed into a large bridge recifier, what would the DC voltage be? Charging an Li pack of nom. 400v would hold the voltage down to terminal voltage, would this harm the genset? I have a whole bunch...
by T1 Terry
Fri, 14 Feb 2014, 03:33
Forum: Batteries, charging, management and monitoring
Topic: LFP New Design Modules
Replies: 11
Views: 2600

LFP New Design Modules

So they are assembled at the factory and only have the end cases is that correct?
So a 200Ah 48v 1C rated module how much $$? and what would it weigh? How much more $$ for it to be 5C rated?

T1 Terry
by T1 Terry
Tue, 21 Jan 2014, 21:27
Forum: General EV Discussion
Topic: Oil Cooling?
Replies: 10
Views: 1874

Oil Cooling?

So, I'd be restricted to brushless AC motors? The BLDC is really an AC motor anyway, so what is the benefit of using a BLDC motor compared to an induction motor? do they both use the same type of controller? Now comes the hard questions :lol: would an oil filled induction motor maintain full load lo...
by T1 Terry
Tue, 21 Jan 2014, 03:32
Forum: General EV Discussion
Topic: Oil Cooling?
Replies: 10
Views: 1874

Oil Cooling?

Would the components in the controller handle being fully submerged in oil? Even the Tritium units that can handle regen? What about the Curtis DC and say a warp 9 or warp 11, would it cause any problems with the carbon brushes... or are they made of a different material?

T1 Terry
by T1 Terry
Mon, 20 Jan 2014, 17:44
Forum: General EV Discussion
Topic: Oil Cooling?
Replies: 10
Views: 1874

Oil Cooling?

An interesting topic came up on Drifting Davo's SX180 build thread http://forums.aeva.asn.au/viewtopic.php?title=dtf180-nissan-180sx&t=3900 so I thought a new topic to save that one going too far off topic. This link was put up to the Endless Sphere forum http://endless-sphere.com/forums/viewtopic.p...
by T1 Terry
Wed, 15 Jan 2014, 03:21
Forum: Members Machines
Topic: Geerant's Magnatron
Replies: 71
Views: 19629

Geerant's Magnatron

Thanks for that, what sort of motor speed and kW output could I expect at 400vdc using the the Tritium controller?

T1 Terry
by T1 Terry
Wed, 15 Jan 2014, 00:35
Forum: Members Machines
Topic: Geerant's Magnatron
Replies: 71
Views: 19629

Geerant's Magnatron

Can you guide me to more info about this motor please, it could be what I'm looking for to do the big bus hybrid drive system. The thought of 400 volts DC absolutely scares the crap out of me, but to get what I want I may have to get over my phobia and up my skill level big time.

T1 Terry
by T1 Terry
Thu, 02 Jan 2014, 01:29
Forum: Members Machines
Topic: seligtype3 1969 Volkswagen Type 3
Replies: 194
Views: 48139

seligtype3 1969 Volkswagen Type 3

If you confirm the problem is the DC to DC, what about a Schottky diode in one of the connecting cables to stop back flow?
I have been following your excellent detailed build, great things never happen over night but the finished product will reflect the care you have put into the build.

T1 Terry
by T1 Terry
Tue, 20 Aug 2013, 19:11
Forum: General EV Discussion
Topic: eRider goes up in flames!
Replies: 19
Views: 4327

eRider goes up in flames!

A friend also bought aheap of the old 40Ah Thundersky cells from them, took all the BMS units off, carefully recharged the cells, some as low as 0.4v when tested, and has used all of them for boat motor battery packs and other various portable 12v power packs. A few weeks back he finally had 1 cell ...
by T1 Terry
Fri, 12 Jul 2013, 16:38
Forum: Batteries, charging, management and monitoring
Topic: Lithium Sulfur Batteries
Replies: 57
Views: 13676

Lithium Sulfur Batteries

It would make a pretty good caravan house battery :D i can't see what advantage the lithium sulfur batteries would be except weight. The LYP cells are working out much better and more cost effective. 600Ah @ 12v in LYP 100Ah cell format weighs roughly 80kg (about 200Ah of deep cycle AGM weight) and...
by T1 Terry
Fri, 12 Jul 2013, 03:30
Forum: Batteries, charging, management and monitoring
Topic: Lithium Sulfur Batteries
Replies: 57
Views: 13676

Lithium Sulfur Batteries

At around AU$ 1,070 and you need 6 to make a 12v battery I'm thinking they have still got a long way to go. The life cycle has improved, but that still has some way to go as well
I think I got the currency conversion right

T1 Terry
by T1 Terry
Sat, 04 May 2013, 02:09
Forum: General EV Discussion
Topic: eRider goes up in flames!
Replies: 19
Views: 4327

eRider goes up in flames!

Any clues on what type of batteries were used? I'm wondering if it was a battery failure or a wiring issue.

T1 Terry
by T1 Terry
Sun, 18 Nov 2012, 02:06
Forum: Members Machines
Topic: barnard's Toyota MR2 - now Mr240
Replies: 213
Views: 32602

barnard's Toyota MR2 - now Mr240

Any updates on what was found regarding the cell problems? Unfortunately I may have discover by my own mistakes just what has happened and caused your failing cells, I have 2 cells with less than 2 mths use with the same symptoms.

T1 Terry
by T1 Terry
Sat, 17 Nov 2012, 13:06
Forum: Technical and conversion discussion
Topic: Siemens motors and rotary engined donors
Replies: 19
Views: 3497

Siemens motors and rotary engined donors

"Automatic versions all had lower output/lower rpm engines due to the lack of availability of a transmission that would be able to reliably cope with the engine's high rpm limits." Hi rev torque converters are not factory stuff, specially built with welded internal blades and finely balanced, the h...
by T1 Terry
Fri, 16 Nov 2012, 18:35
Forum: Technical and conversion discussion
Topic: Siemens motors and rotary engined donors
Replies: 19
Views: 3497

Siemens motors and rotary engined donors

What about a turbine step down transmission? They are designed for high revs. An easier to find unit would be an auto transmission. With a specially built high stall torque converter, say 5,000rpm stall to ensure you were right up in the motors torque range off the mark, a 2 speed transmission for h...
by T1 Terry
Thu, 15 Nov 2012, 02:02
Forum: Technical and conversion discussion
Topic: family city car - doable?
Replies: 13
Views: 2552

family city car - doable?

when consider the little engines they used they can't have been that bad as far as weight/rollability if that's a word. for a very low tech engine they still returned 6km/ltr or better and easily cruised at 100km/h, mine a bit faster than that and on LPG but I'm a lead foot http://forums.aeva.asn.au...
by T1 Terry
Wed, 14 Nov 2012, 23:32
Forum: Technical and conversion discussion
Topic: family city car - doable?
Replies: 13
Views: 2552

family city car - doable?

What about a VW Kombi? Classic looks, plenty of room for kids and batteries and groceries etc. No one expects you to go fast but the original 1800 engine in a '74 bay only produced 58hp and they got along alright so certainly doable. Electric aircon from the batteries using the standard automotive s...
by T1 Terry
Sun, 04 Nov 2012, 15:01
Forum: The Lounge
Topic: Solar scheme gone wrong
Replies: 32
Views: 4737

Solar scheme gone wrong

the brother in law lives on the side of a mountain in the Huon Valley and runs off hydro and solar. he has this huge ex PMG lea acid battery that he tells us still works fine, and it does along as there is good sun every day and his hydro runs every afternnon/evening from the storage dam. but turn t...
by T1 Terry
Sat, 03 Nov 2012, 23:13
Forum: The Lounge
Topic: Solar scheme gone wrong
Replies: 32
Views: 4737

Solar scheme gone wrong

by T1 Terry
Sat, 03 Nov 2012, 20:19
Forum: The Lounge
Topic: Solar scheme gone wrong
Replies: 32
Views: 4737

Solar scheme gone wrong

"with the cost of batteries and how long they last, i didn't think this would be a viable option ?? " The was a costing study recently, I'll try to find it. The cost was a bit high on cell prices and they were short sold on their life cycle capabilities so the end figures were a bit distorted, possi...
by T1 Terry
Sat, 03 Nov 2012, 18:38
Forum: The Lounge
Topic: Solar scheme gone wrong
Replies: 32
Views: 4737

Solar scheme gone wrong

Depending what state you are in it ets a lot worse than that. As far as I understand it, all the power you generate goes in the grid, then you buy it back. That was fine for the early birds that are getting the 60c kWh but anyone who bought a house with solar already on it don't get the 60c, I think...