Search found 18 matches

by Xmoht
Yesterday, 08:18
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

dose a car get all out of balance when the tank is almost empty (~-40Kg)? dose the car get all out of balance when you have 3 adults in the back and a full tank of gas (~400Kg)? The car doesn't move when you have 3 adults in the back and a full tank of gas, it's a Corolla! (But good point, thanks)
by Xmoht
Mon, 20 Nov 2017, 17:03
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

you dont want to go leadslead you will burn way more power dragging there HUGE mass around and you will only have about 1/3 the power to mass not to mention lead dont deal well with the torcher of heavy discharges With the low weight of lithium or NCM though, do you think being so light in the rear...
by Xmoht
Mon, 20 Nov 2017, 14:20
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

So for a Small SLA half the pack needs to be where the petrol tank used to be. The rest of the SLA in the engine bay. For Lithium the entire pack would be where the petrol tank used to be. You may have to put a 12 or 15 inch sub in the boot to offset the reduced weight of lithium to keep 50/50 8-) ...
by Xmoht
Sun, 19 Nov 2017, 15:26
Forum: Technical and conversion discussion
Topic: Removing ICE
Replies: 3
Views: 42

Re: Removing ICE

Excellent flow chart, I should make it into a graphic and print it as a poster!

Edit: found the ADR for needing a windscreen washer bottle.
by Xmoht
Sun, 19 Nov 2017, 13:47
Forum: Technical and conversion discussion
Topic: Removing ICE
Replies: 3
Views: 42

Removing ICE

Hi all, thought I should start a new thread for this one. I get that when removing the ICE from the car for conversion every car will be different based on how the conversion is going to proceed. I'm planning on leaving the gearbox and the brakes. So I'll leave the brake booster, master cylinder bra...
by Xmoht
Fri, 17 Nov 2017, 13:56
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

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. This should be roughly back to where the original distribution was. You would only go over weight if you decide to stick with SLA. Did some of the old rolla's have the fuel tank in the boo...
by Xmoht
Thu, 16 Nov 2017, 19:00
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

Hi again; Still banging on about weight distribution Hi poprock, thanks for that. I've got all the light vehicle modifications guides printed out and neatly presented in little green folders for me to study! Definitely concur about weight distribution. Once I've removed the ICE I'll be weighing eac...
by Xmoht
Thu, 16 Nov 2017, 13:36
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

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. ...
by Xmoht
Thu, 16 Nov 2017, 11:55
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

Lower battery voltage probably won't affect performance, as long as you are still able to draw enough amps from the battery (600A minimum I would suggest) And aside from the battery and motor, it's my choice of motor controller that will allow me to draw enough amps to give it that requisite perfor...
by Xmoht
Thu, 16 Nov 2017, 07:22
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

Thanks for your reply Paul.

I haven't been able to find many people running the lower voltage systems so it's hard to know what the actual outcome will be.

Did you find your acceleration improved just between swapping the lead acid for lithium when it was the same voltage?
by Xmoht
Wed, 15 Nov 2017, 17:55
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

Still don't entirely understand motors at this stage. I got lost at magnetic flux (in the first chapter :lol: ) I figured I'd call up the forklift sales place that I believe deal in used forklift stuff too and go from there, but looking at other peoples build threads there's so much variety and choo...
by Xmoht
Tue, 14 Nov 2017, 12:52
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

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 t...
by Xmoht
Mon, 13 Nov 2017, 15:31
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

Based on my current driving habits, 15-20km range would be adequate as a range, 40-50kph would be adequate as a speed.
by Xmoht
Mon, 13 Nov 2017, 14:53
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

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? I'm entirely open to everything at this stage but cheaper and simpler is better given my low ambitions. A 48V battery pack using lead acid batteries is my goal ten...
by Xmoht
Mon, 13 Nov 2017, 13:51
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

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. Thanks for your replies, I will have a read through the other build thread. Your suggestion on using the rear pillar vent i...
by Xmoht
Sun, 12 Nov 2017, 09:40
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

Thanks for all your great replies! Weight distribution in the car is pretty equal and balanced which is one reason they're popular for drifting. The version with a slightly heavier performance motor is weighted as follows: FL, 275kg FR, 260kg RL, 210kg RR, 210KG Interior cabin space isn't a concern ...
by Xmoht
Sat, 11 Nov 2017, 06:58
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Re: Battery pack placement

Thanks for your reply. I'm planning in using lead acid batteries. I'm in Tasmania so it's rarely very hot and I'm looking at decent ventilation and insulation of the box. Are you suggesting I don't worry about having a spare tyre, cut out the spare tyre well in the boot and weld in a low hanging bat...
by Xmoht
Fri, 10 Nov 2017, 12:35
Forum: Technical and conversion discussion
Topic: Battery pack placement
Replies: 43
Views: 332

Battery pack placement

Hi all, Looking at the basic design elements for my EV conversion. It's a 1984 Corolla sedan. Based on my estimated battery pack size, there will be room in the boot or the rear passenger area as it'll only have the two front seats. Neither placement will be any closer to being directly over the rea...