Search found 2391 matches

by antiscab
Sat, 21 Jun 2008, 09:44
Forum: Electric motors and controllers
Topic: Wheel Motors
Replies: 24
Views: 6311

Wheel Motors

going hybrid is a challenge indeed, with limited returns. you will need to start out with a vehicle that is either already a hybrid, or has a significant payload capacity, as the only drivetrain heavier than a pure electric is a hybrid one. what type of car are you considering? re the jet engine sta...
by antiscab
Sat, 21 Jun 2008, 09:40
Forum: General EV Discussion
Topic: Thundersky batteries
Replies: 3
Views: 736

Thundersky batteries

Hi Dougy, ive been using thunderskys in my scooter for about 6 months now, theyve been good so far. If your looking for someone whose used them for alot longer, look for jukka jarvinen on the yahoo groups thundersky forum. hes been using them basically since the beginning. the original lfp series ba...
by antiscab
Fri, 20 Jun 2008, 20:22
Forum: Batteries, charging, management and monitoring
Topic: SWEI 0008 Upgrade
Replies: 38
Views: 4559

SWEI 0008 Upgrade

yes, its odd that we havent seen any balancing function of any sort on any of the factory EV's i have seen. none of the ev's discussed on the visforvoltage forums have any. The same is true of AH counters, none of the scooters use an AH counter as a fuel guage, they all use voltmeters. but we're a m...
by antiscab
Tue, 17 Jun 2008, 08:45
Forum: General EV Discussion
Topic: What about an EV hybrid?
Replies: 24
Views: 2468

What about an EV hybrid?

feel free to correct me, but every time i hear of an "air car" scam comes to mind. 4 or 5 years ago, homepower did a piece on storing energy in the form of compressed air. they calculated that a 1.5m tall 50cm wide cylinder raised to 3000PSI stored 0.5kwh. The energy density of compressed air is eve...
by antiscab
Mon, 16 Jun 2008, 06:37
Forum: Technical and conversion discussion
Topic: Electric Mororcycle has officially begun!!!
Replies: 24
Views: 3723

Electric Mororcycle has officially begun!!!

seems i was mistaken, they only do 12v, 24v and 48v. heres a link for a 24v charger: http://cgi.ebay.com.au/Lead-Acid-Battery-Charger-25Amp-24Vdc-230Vac-New_W0QQitemZ110260846296QQihZ001QQcategoryZ9895QQtcZphotoQQcmdZViewItem they have a shop and sell chargers of various sizes. i use their 10A 48V c...
by antiscab
Mon, 16 Jun 2008, 05:59
Forum: Technical and conversion discussion
Topic: Electric Mororcycle has officially begun!!!
Replies: 24
Views: 3723

Electric Mororcycle has officially begun!!!

you could use 2x36v20A chargers from kipoint on ebay.
just connect a string on 12 to each charger.
itll cost you about $500 delivered. just a thought
by antiscab
Mon, 16 Jun 2008, 05:47
Forum: Technical and conversion discussion
Topic: Electric Mororcycle has officially begun!!!
Replies: 24
Views: 3723

Electric Mororcycle has officially begun!!!

haha if she calls u up on it, remind her how much she paid for fuel last year:P
by antiscab
Mon, 16 Jun 2008, 05:45
Forum: Batteries, charging, management and monitoring
Topic: ebike beginner seeking battery suggestion
Replies: 5
Views: 1155

ebike beginner seeking battery suggestion

well if you already own them, its worth a shot. Its not like its going to cost you money. Even the cheap 18650s are capable of 2C.
by antiscab
Sun, 15 Jun 2008, 22:29
Forum: General EV Discussion
Topic: EV on eBay
Replies: 4
Views: 710

EV on eBay

not as easy as it is to convert an ice one to electric.
some of the EV Ravs on ebay are converts rather than OEM.

The adapter plate of the US version is the same as over here.
by antiscab
Sat, 14 Jun 2008, 20:29
Forum: Technical and conversion discussion
Topic: Electric Yamaha FZR-E Conversion
Replies: 4
Views: 963

Electric Yamaha FZR-E Conversion

yes, hydrogen has many properties that arent friendly towards engines. Its less stable (much much lower octane, around 40) so its far more prone to predetonation...its on par with putting diesel in your fuel tank. Of course this problem can be overcome with correct tuning/modifications. Hydrogen als...
by antiscab
Sat, 14 Jun 2008, 20:23
Forum: Technical and conversion discussion
Topic: Electric Mororcycle has officially begun!!!
Replies: 24
Views: 3723

Electric Mororcycle has officially begun!!!

oh, dw, i saw the other thread. nice setup
by antiscab
Sat, 14 Jun 2008, 20:17
Forum: EV Racing
Topic: EQuads
Replies: 5
Views: 1721

EQuads

i dont know of any motor between the etek 15hp peak units and the 6.7" series wound 72hp peak. If you go for a smaller motor your efficiency will suffer, as will your continuous output. The continuous output of the 6.7" is 16hp, if you go to a smaller motor you may run into heat problems. Heres a li...
by antiscab
Sat, 14 Jun 2008, 20:12
Forum: Batteries, charging, management and monitoring
Topic: ebike beginner seeking battery suggestion
Replies: 5
Views: 1155

ebike beginner seeking battery suggestion

The lithium cobalts do handle deep discharges alot better yes, come to think of it. the service life of a lead pack is approx 3-500 cycles @80% dod, and lithium cobalt is suposed to 500 cycles to 80%. LiFePO4 is 2000 cycles to 80%. I think you will find Ni-MH is more expensive than lithum nowadays. ...
by antiscab
Sat, 14 Jun 2008, 20:06
Forum: Technical and conversion discussion
Topic: Electric Mororcycle has officially begun!!!
Replies: 24
Views: 3723

Electric Mororcycle has officially begun!!!

i do, although its more of a moped than a bike, heres the evablum page:
http://www.evalbum.com/1499
its top speed is somewhere between 60-70 depending on conditions
its an emax sport that i upgraded to lithiums and cranked up the voltage and power.

what motorbike do you have?
by antiscab
Sat, 14 Jun 2008, 20:00
Forum: EV Racing
Topic: EQuads
Replies: 5
Views: 1721

EQuads

Ah the universal requirement "But it has to go like hell! That part is not negotiable!" lol That motor is a series wound DC motor. As far as bang for your buck, you cant go wrong. that setup will give you approx 72hp peak A slight change to my advice, id suggest the kelly 144v kelly controller from ...
by antiscab
Sat, 14 Jun 2008, 10:26
Forum: Batteries, charging, management and monitoring
Topic: ebike beginner seeking battery suggestion
Replies: 5
Views: 1155

ebike beginner seeking battery suggestion

Hi derek, If your getting lithium, dont worry about power limiting, they way you describe it, your setup couldnt even approach their limits. regarding LiPo packs, their service life isnt much better than lead, but they arent that much more expensive for such a small pack. a LiPo pack for you applica...
by antiscab
Sat, 14 Jun 2008, 10:10
Forum: Technical and conversion discussion
Topic: Electric Mororcycle has officially begun!!!
Replies: 24
Views: 3723

Electric Mororcycle has officially begun!!!

as far as doing it healthy, i would say so, rod dilkes pulls 450A out of his 90AH (also 5C) pretty regularly in his conversion. his pack is now a year old and going strong. Most i have pulled out of my pack is 250A (just over 6C) and it sagged to 2vpc. The thundersky batteries seem to be pretty cons...
by antiscab
Fri, 13 Jun 2008, 19:21
Forum: Technical and conversion discussion
Topic: Electric Mororcycle has officially begun!!!
Replies: 24
Views: 3723

Electric Mororcycle has officially begun!!!

re thunderskys,
I use thundersky lfp40 on my bike (48v pack), and they meet specification.
their voltage under load is closer to 3vpc though, so if your looking for 72 under load instead of 72v nominal, you need 24cells.

Matt
by antiscab
Thu, 12 Jun 2008, 06:17
Forum: Batteries, charging, management and monitoring
Topic: SWEI 0008 Upgrade
Replies: 38
Views: 4559

SWEI 0008 Upgrade

Hi Andrew, how far do you normally ride each day? Could you use extra range? are you riding the scooter until low voltage cut off? are you leaving the batteries in a partial state of charge for more than 3hrs? its strange that the batteries are failing after just 750km. If your doing any of the abov...
by antiscab
Sun, 08 Jun 2008, 08:05
Forum: Batteries, charging, management and monitoring
Topic: Testing battery capacity
Replies: 5
Views: 1126

Testing battery capacity

Gday Simon,

I have a wattsup AH counter i can lend to you.
Ill try and remember to bring it at the next WA-EVA meeting.

Matt
by antiscab
Fri, 06 Jun 2008, 03:52
Forum: General EV Discussion
Topic: 6 seater needed...
Replies: 8
Views: 1193

6 seater needed...

dont worry, i started out wanting AC only nothing else. Come to think of it, i think thats how everyone starts. Its kinda similar to the direct drive or transmission argument that seems to be going on on the EVDL Big-L, you will want to find a vehicle with the greatest difference between GVM and bod...
by antiscab
Tue, 03 Jun 2008, 04:40
Forum: General EV Discussion
Topic: Another newbie joining the EV enthusiasts ranks
Replies: 15
Views: 2110

Another newbie joining the EV enthusiasts ranks

yes i had (have) a similar experience with my budget, i too started with $25k, but now ive had to push that out to $33k. at least if you start out with lead, you will know what the car will handle like with lots of weight, and how usable it will be with just 2 seats. lol you could probably then upgr...
by antiscab
Tue, 03 Jun 2008, 01:46
Forum: General EV Discussion
Topic: Another newbie joining the EV enthusiasts ranks
Replies: 15
Views: 2110

Another newbie joining the EV enthusiasts ranks

yes, staying below $25k will be a challenge, and impossible if this includes the cost of the donor vehicle. to get 100km range you will need around 20kwh of battery capacity for a car of that size. have a look at http://www.waeva.asn.au/batrun_tutorial.htm in particular, look for a link "spreadsheet...
by antiscab
Tue, 03 Jun 2008, 00:09
Forum: General EV Discussion
Topic: Another newbie joining the EV enthusiasts ranks
Replies: 15
Views: 2110

Another newbie joining the EV enthusiasts ranks

ah, yes for that, a higher ratio would be better.
looks like a good conversion.
your 0-100 in 16sec target is very achievable.
btw, what kind of budget are you looking at?
what kind of batteries were you thinking of using?
your conversion is starting to sound better and better.

Matt
by antiscab
Mon, 02 Jun 2008, 20:14
Forum: General EV Discussion
Topic: Another newbie joining the EV enthusiasts ranks
Replies: 15
Views: 2110

Another newbie joining the EV enthusiasts ranks

Hi Priit, The warp9 motors aren't meant to be run at 9000rpm. from what i read 6000rpm is about their safe continuous limit. However, with that kind of setup, you wont be able to get to 130kmh anyway. The max voltage you can put across the armature windings without causing significant arcing is 170v...