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by antiscab
Tue, 04 Nov 2008, 07:04
Forum: Batteries, charging, management and monitoring
Topic: Ponilion's LiFePo4,5-33C LiPolymer battery
Replies: 118
Views: 28548

Ponilion's LiFePo4,5-33C LiPolymer battery

looks like you found the posts aswell andrew....i couldve sworn i hadnt hit the delete all posts buttons yet
by antiscab
Tue, 04 Nov 2008, 07:02
Forum: Batteries, charging, management and monitoring
Topic: Ponilion's LiFePo4,5-33C LiPolymer battery
Replies: 118
Views: 28548

Ponilion's LiFePo4,5-33C LiPolymer battery

Hi Jack, You have found the create your own thread function, this is good. Please stick to this thread for discussion of your cells. I will be deleting your other posts shortly, please do not actively try and make sales on all threads, as this clogs the discussion. If someone posts a question specif...
by antiscab
Tue, 04 Nov 2008, 06:53
Forum: Electric motors and controllers
Topic: AC motors, multipoles, torque
Replies: 549
Views: 73453

AC motors, multipoles, torque

hi Lowndsy,

yes wye means the same as star, and it is indeed the stator poles that are being switched (there aren't any other poles that are accessable from the outside electrically in a 3PIM).

Matt
by antiscab
Tue, 04 Nov 2008, 04:33
Forum: Technical and conversion discussion
Topic: Progress on the MX5 conversion
Replies: 50
Views: 9915

Progress on the MX5 conversion

lol....so something with faster current limit?
and maybe a big fat "this motor is too big u dolt" light?

loving the exporting controllers idea though, keep it up Ian

Matt
by antiscab
Mon, 03 Nov 2008, 17:48
Forum: Members Machines
Topic: Lightweight Chopper Al 6061
Replies: 1
Views: 1300

Lightweight Chopper Al 6061

Hi Karl, Welcome to the association. 2000E+shipping is $AUD3800+shipping which is alot of money for what your are proposing. for that amount you can buy a factory built electric scooter that already passes local regulations, has 3500w and does 60kmh, then modify it with lithium for 5000w and 70kmh. ...
by antiscab
Fri, 24 Oct 2008, 17:49
Forum: Electric motors and controllers
Topic: AC motors, multipoles, torque
Replies: 549
Views: 73453

AC motors, multipoles, torque

30A continuous wont bother a 20AH agm any. i used to run he 20AH silicon batts on my scooter at 40-50A continuous shortly before i changed over to lithium. You could always do a longer test if interested? (i only ran those batteries for 50 cycles or so, they were still fine, i just wanted to get my ...
by antiscab
Fri, 17 Oct 2008, 04:26
Forum: General EV Discussion
Topic: AEVA bulk purchase of EVs
Replies: 2
Views: 730

AEVA bulk purchase of EVs

Hi Karl, We have done group buys in the past, particularly for components that would have a significant variance in price from what an individual could buy from a retailer, and what a group could buy from a factory. eg, thundersky batteries. The group buys are usually handled by individual members o...
by antiscab
Fri, 17 Oct 2008, 04:09
Forum: Members Machines
Topic: evkartalex - My ev-Go-Kart project
Replies: 8
Views: 3120

evkartalex - My ev-Go-Kart project

ah of course, motors for the hydraulics ususally r PM (due to their easy to implement speed control).

Matt
by antiscab
Thu, 16 Oct 2008, 17:52
Forum: AEVA WA Branch
Topic: Hey all
Replies: 4
Views: 1351

Hey all

Hi alex, the controller can limit battery side amps independently to motor side amps at low speed. however, once Pmaxin = Pout, then the motor side amps falls off until it is equal to battery amps. forklift batteries arent known for their power density. you might have to trial and error a bit to wor...
by antiscab
Thu, 16 Oct 2008, 17:37
Forum: Members Machines
Topic: evkartalex - My ev-Go-Kart project
Replies: 8
Views: 3120

evkartalex - My ev-Go-Kart project

regarding regen, a boost converter will be needed to do regen, as the terminal voltage of the motor will always be lower than that of the battery pack (unless you somehow spin the motor faster than no load speed at full pac voltage) regen from a perm magnet motor can be achieved a full peak torque, ...
by antiscab
Wed, 15 Oct 2008, 17:34
Forum: Technical and conversion discussion
Topic: Hipo AWD project
Replies: 89
Views: 9026

Hipo AWD project

ah woody, you are neglecting voltage sag. when a 40AH cell is toasty (ie 50 deg c+) it *might* be able to do 200A, but at a voltage of 2.5v. that would give 550v for 220 cells or 110kw. MikeG, The price per peak kw is the same for thunderskys, lifebatt and just about any other LiFePO4 battery i have...
by antiscab
Wed, 15 Oct 2008, 04:10
Forum: Technical and conversion discussion
Topic: Hipo AWD project
Replies: 89
Views: 9026

Hipo AWD project

actually for 200kw you would need "only" 350A, which would be fine if we were talking about 90AH:p
by antiscab
Tue, 14 Oct 2008, 06:41
Forum: General EV Discussion
Topic: alternator assist
Replies: 12
Views: 1523

alternator assist

Pros = regen cons = extra weight and complexity i think that sums it up. to have a meaningful amount of regen you will need a fairly large alternator (unless you plan on gearing up a truck alternator to some insane rpm, at 3000rpm and a saturated field you *might* get 120v). to give you an idea of w...
by antiscab
Tue, 14 Oct 2008, 06:15
Forum: AEVA WA Branch
Topic: AEVA Perth Open Day - 12th October
Replies: 8
Views: 3394

AEVA Perth Open Day - 12th October

oh no blblaster....u got the pic of me eyeing off the vectrix lol
that thing really moves compared to my scooter....even after i increased the power 120%.

Matt
by antiscab
Tue, 14 Oct 2008, 06:05
Forum: General EV Discussion
Topic: Would this work on a E-mower
Replies: 5
Views: 786

Would this work on a E-mower

the surge requirement of some motors are *very* significant. my 450w (1.3kw surge) pure sine wave inverter was marginal when using an electric drill, and would sometimes cut out if i started it up too fast. you may have to go though some trial and error to work out how much surge capacity you need. ...
by antiscab
Sat, 11 Oct 2008, 17:14
Forum: EV Motoring
Topic: New AEVA Shirts
Replies: 7
Views: 1296

New AEVA Shirts

the manufacturer electric car or the shirt?
by antiscab
Thu, 09 Oct 2008, 08:35
Forum: Batteries, charging, management and monitoring
Topic: Ultra Batteries
Replies: 15
Views: 2439

Ultra Batteries

Theyre just caps and SLA's.

power density marginally better than high rate batteries such as the optima yellow tops (until the cap depletes).
bad energy density (worse than 'normal' lead due to the cap weight)
charge acceptance is just as good as an optima.

y would you bother.

Matt
by antiscab
Thu, 09 Oct 2008, 08:25
Forum: General EV Discussion
Topic: eV repairers
Replies: 1
Views: 462

eV repairers

its situations like that, places like the ev shop....and masons workshop if you know of it:p.....are *very* handy.

Matt
by antiscab
Wed, 08 Oct 2008, 07:23
Forum: General EV Discussion
Topic: Blade Runner from BEV
Replies: 10
Views: 1149

Blade Runner from BEV

slowly :( at present its still a rolling body. i need to organise a motor (i figure if i pester rob enough..i might buy one of his:p) at this stage it might move under its own power before christmas. btw, where are you located? if u r in perth i highly recommend coming to the open day (which just ha...
by antiscab
Wed, 08 Oct 2008, 05:22
Forum: General EV Discussion
Topic: Blade Runner from BEV
Replies: 10
Views: 1149

Blade Runner from BEV

hi soyachips,

the evshop here in perth is doing something similar with mitsubishi mirages from memory. they also do whole conversions.

Matt
by antiscab
Tue, 07 Oct 2008, 19:17
Forum: General EV Discussion
Topic: Heater-- Demister
Replies: 91
Views: 17646

Heater-- Demister

since they are just a transistor (i thought they would have used IGBTs) why would it matter if they are meant to switch AC or not?

Matt
by antiscab
Tue, 07 Oct 2008, 04:20
Forum: Members Machines
Topic: Red Suzi
Replies: 217
Views: 56072

Red Suzi

rubber mounts? oh no....u havent crossed over to the double isulation side have you? Image

Matt
by antiscab
Tue, 07 Oct 2008, 04:18
Forum: General EV Discussion
Topic: Heater-- Demister
Replies: 91
Views: 17646

Heater-- Demister

theres heaps and heaps of solid state switches on ebay

Matt
by antiscab
Mon, 06 Oct 2008, 01:54
Forum: General EV Discussion
Topic: 84v or 96v AC conversion using Curtis 1238
Replies: 25
Views: 7340

84v or 96v AC conversion using Curtis 1238

battery voltage will sag to 2vpc or less.
floodeds sag alot more than AGMs.
so 16 6v batteries would only give 96v under load.

i wonder if the new curtis 550A 96v ac controller is still analogue like the old 1231C?
i wonder if it works for perm-magnet synchronous motors aswell

Matt
by antiscab
Mon, 06 Oct 2008, 01:32
Forum: General EV Discussion
Topic: Electric Commodore
Replies: 20
Views: 1984

Electric Commodore

i think this is what you might be after:
emis

be warned though, where as as a pure ev you might be able to put 600kg of batteries in, as a hybrid, you can only fit 1-200kg.

Matt