Search found 3028 matches

by Richo
Yesterday, 12:25
Forum: For Sale/Wanted
Topic: Blade electron, free to a good home
Replies: 3
Views: 83

Re: Blade electron, free to a good home

Normally I'd probably put my hand up as this is my job...
But I already have so many other things I should be doing.

Wouldn't it be better to fix the problem and sell it as a working ev?
I'm sure I owe you a couple hours of labor anyway...
by Richo
Yesterday, 12:13
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

If the Rolla was doing 8L/100km then to break even on petrol prices the petrol would have to be $1.37/L. (For SLA) So eqv 8L/100km that is $0.50/L. (For lithium) I wouldn't buy SLA just based on the numbers above. It would be like saying NEW12V 90Ah are HALF price - who would do it. Even if you got...
by Richo
Mon, 20 Nov 2017, 12:37
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

So the (SLA) pack would be 2.4kWh useable, 30kW peak, ~15km range, 108kg, $1,200. So the (Lithium) pack would be 60V 60Ah 2.8kWh useable, 30kW peak, ~15km range, 31kg, ~$1,300. SO IF you had 100kg of lithium. You would need to put about 50kg of battery in the back of the car somewhere. 50kg of batt...
by Richo
Fri, 17 Nov 2017, 12:43
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

The handi lost 140kg of iCE junk. Lets assume that the rolla is about the same. 45kg was around the back area. SO IF you had 100kg of lithium. You would need to put about 50kg of battery in the back of the car somewhere. 50kg of battery in the engine bay. Then motor controller etc in the engine bay....
by Richo
Fri, 17 Nov 2017, 12:32
Forum: Electric motors and controllers
Topic: Oversized RC BLDC Outrunners
Replies: 5
Views: 59

Re: Oversized RC BLDC Outrunners

Swwweeet.
14kg is an impressive amount to carry around!
Just out of interest how long(minutes) will it fly unloaded and with what size battery?
by Richo
Thu, 16 Nov 2017, 15:41
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

Yes it can be calculated.
But you will need to look at it on a case by case basis for each motor selected.
by Richo
Thu, 16 Nov 2017, 15:38
Forum: Batteries, charging, management and monitoring
Topic: Pairing up a battery inverter with a grid tie inverter...
Replies: 3
Views: 42

Re: Pairing up a battery inverter with a grid tie inverter...

The DC/AC inverter probably has polarity protection on the battery side preventing the grid tie from feeding power into the 10kWh battery. My guess is the grid tie will bump up the AC voltage until it hits it's maximum AC output threshold, shuts down and reports an error. Likely will happen within a...
by Richo
Thu, 16 Nov 2017, 13:01
Forum: Electric motors and controllers
Topic: Oversized RC BLDC Outrunners
Replies: 5
Views: 59

Oversized RC BLDC Outrunners

Well I was having a look around and the biggest RC BLDC and came across these 2: 35kW 400A 120V 3kg AUD$1600 at your door incl controller 50kW 500A 120V 6kg AUD$1825 at your door incl controller Trade in you car for a plane :lol: https://www.aliexpress.com/item/Flier-brushless-7S-120A-ESC-for-RC-boa...
by Richo
Thu, 16 Nov 2017, 12:35
Forum: Electric motors and controllers
Topic: Remy HVH250 Oddity
Replies: 2
Views: 33

Re: Remy HVH250 Oddity

Mmmm must have been a mistake as the add has been removed.
The other ones on ebay are $5,000-$10,000 ea

Ha ha I should have bought it when I saw it!
by Richo
Thu, 16 Nov 2017, 12:29
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

Yes - correct. Amps -> Torque (acceleration) Voltage -> RPM (top speed) The available Voltage will decrease as the Back EMF increases with speed so this will limit the AMPS you can draw. So a higher voltage battery pack will mean you can draw the peak AMPS over more RPM giving better acceleration. I...
by Richo
Wed, 15 Nov 2017, 13:04
Forum: Electric motors and controllers
Topic: Remy HVH250 Oddity
Replies: 2
Views: 33

Remy HVH250 Oddity

ebay.co.uk 272890815026
user: tyrefire
GBP$480 for a BLDC claims 63kW+ as used in BMW X6

60kW for under $1,000

Is this real?
by Richo
Wed, 15 Nov 2017, 12:52
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

How 'bout motors?

Motenergy ME1003 23kW
Motenergy ME1114 24kW
Motenergy ME0913 30kW
Motenergy ME1115 30kW
DLC-20 30kW

There is a 72V Forklift on dumtree for $1k in Tassie. 1164538895
I dont see any specs anywhere so no idea if it'd work for your conversion.
by Richo
Tue, 14 Nov 2017, 13:13
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

Just as a side thought a 250W panel on a roof rack is about 4km of recharge range per day in Tassie.
So if you only use to go to the corner shop every other day you may not have to even plug it in...
by Richo
Tue, 14 Nov 2017, 13:09
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

Yeah my thread is WAY out of date. When I have actually done something on the Handi I'll update the thread. Soon I hope - I have a couple of weeks off over XMAS to play with it. The Headway cells are quite good. So 110 cells of headway 2.8kWh useable, ~35kW peak, ~15km range, 36kg, $3,000. So perhap...
by Richo
Tue, 14 Nov 2017, 12:54
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

Looking at the T-105 specs all I can see is a peak of 250A.
So 48V 250A is 12kW.
Which isn't good either - half anything I was suggesting above.
The reason frankenswift used them is because they came with the forklift they purchased to scab the motor out of.
by Richo
Tue, 14 Nov 2017, 12:14
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

Just crunching some numbers: A 12V 90Ah 27kg SLA battery Rated 55Ah for 1hr, 27A charge, 800A discharge 5sec. So the pack would be 2.4kWh useable, 30kW peak, ~15km range, 108kg, $1,200. If you assume a 2 year life so 730 cycles that's 10,950km or $10.95/100km. If the Rolla was doing 8L/100km then to...
by Richo
Tue, 14 Nov 2017, 10:06
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

The voltage really only matters in relation the to the motor back EMF for a given speed.
48V sounds realistic for your expectations.
by Richo
Mon, 13 Nov 2017, 13:18
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

Depending on variant of corolla a flexi-tube from the battery box to side vents of the car.(rear pillars)
Then a fan on the battery box pushing cabin air into the battery box.
by Richo
Mon, 13 Nov 2017, 13:15
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

Sounds similar in build to Simons Niki.
http://www.aeva.asn.au/forums/viewtopic.php?t=602
by Richo
Mon, 13 Nov 2017, 13:02
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 325

Re: Battery pack placement

From a safety point of view I would not recommend wet cells such as the T-105's for an eV.
Do you have any other options for batteries?
by Richo
Mon, 13 Nov 2017, 12:49
Forum: Tesla EVs
Topic: Top 5 Main Problems with Electric Cars
Replies: 3
Views: 85

Re: Top 5 Main Problems with Electric Cars

1. Well most of the production ones are BUTT ugly.
2. Most of the good looking ones are too expensive.
3. Still range hysteria with general public.
4. Actually car shows said something about snowing in hell before driving electric...
5. Order today - wait a year and half before you get it.
by Richo
Mon, 13 Nov 2017, 12:40
Forum: The Lounge
Topic: Classic EV Conversion - Daimler 250 (V8)
Replies: 3
Views: 54

Re: Classic EV Conversion - Daimler 250 (V8)

Hello to the Forum. Hi Andrew - Welcome! The car has a kerb weight of about 1300kg (with the current engine). The weight is not really any different to a new 4-door sedan. The issue may be Gross vehicle mass (GVM) - which may not even have a listing for your car. 1. I am reasonably handy but not a ...
by Richo
Wed, 08 Nov 2017, 12:36
Forum: Charging Infrastructure
Topic: 40kVA UPS
Replies: 1
Views: 49

Re: 40kVA UPS

Are you sure there aren't SLA's in there it weighs 685kg :shock:
The manual suggests 450kg. :lol:

Seems like a good price for 3-phase power.

All you need then is the 10-15kW of solar.
by Richo
Fri, 03 Nov 2017, 12:53
Forum: Technical and conversion discussion
Topic: Dreamers Questions. Hillclimb 4wd Racer
Replies: 19
Views: 285

Re: Dreamers Questions. Hillclimb 4wd Racer

Re: battery - yes I'd say a 16 kWh, 150 kg battery is about right for most hillclimb/burnout activities. No I think he means 150kg for the whole system. 80kg battery (10kWh Lipo) 40kg 2xERmax268 motors 30kg other crud - couplers, controllers, wires etc A datalogger with GPS+G sensors my help trim d...
by Richo
Fri, 03 Nov 2017, 12:46
Forum: Technical and conversion discussion
Topic: Dreamers Questions. Hillclimb 4wd Racer
Replies: 19
Views: 285

Re: Dreamers Questions. Hillclimb 4wd Racer

Could i go without a battery all together and use the engine hooked to a generator to power the electric motors? Or is that something that makes no sense. Please tell my why if so. Ok so you need a 460kW generator ie 2 electric motors 230kW ea to produce the electricity. Then you need a petrol moto...