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Old 05-28-2015, 08:55 PM   #4 (permalink)
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Join Date: Dec 2007
Location: North Bay, Ontario, Canada
Posts: 129

SilverCivic - '08 Honda Civic
90 day: 28.69 mpg (US)
Thanks: 39
Thanked 11 Times in 8 Posts
Originally Posted by thingstodo View Post
It happens!

This calculator is dated, but the info still appears to apply. No new batteries are listed and the range is pessimistic with lithiums ... but besides that ..

EV Calculator

If you stay with a standard transmission, you can still cycle through the gears and keep up with traffic, even if your vehicle is a bit under powered.

I don't think you need to sacrifice power, unless you find a good deal on the motor or controller.
With an unlimited budge (dreaming) I'd go dual motor direct drive, but... Yeah nothing wrong with keeping the gearbox. Subaru's tend to have many interchangeable parts so even if the donor car is an automatic I could probably find a manual box to fit. Assuming this applies to the SVX.


If you are willing to wait for me to finish testing Paul's AC controller, that may be a lower-cost option for you.
I'm fine with that! It'll be months before I can actually start pulling a car apart anyway. I'm pretty good with a soldering iron, even if I'm deficient in the design side of things. I can certainly follow instructions haha.


I'm not associated with EVTV, but I like their prices on this stuff:
- 100 A-h CALB SE - $95 each seems like a good deal to me, but they are no-warranty and a few years old stock EVTV Motor Verks Store: CALB SE100AHA 100Ah LiFePo4 Cell, Lithium Battery Cells, SE100AHA
- Siemens motor $3500 EVTV Motor Verks Store: 1 Siemens 1PV5135-4WS14 AC Induction Motor, Motors and Controllers, 1PV5135
- Siemens motor adapter $1000 EVTV Motor Verks Store: Siemens B-Face Adapter, Drive Train Components, bfaceadapter

It's the least expensive AC option I've found so far ...
Those are good battery prices (Oh and that was supposed to be a 40Ah cell price up there, not 400.


You likely know this already, but you did not mention:
- DC/DC converter or 12V pack of LiFePO4 to run accessories
- heater to keep the windshield clear when it's raining. Water heat to use the existing controls in the car or PTC heater cores installed in the ducts to run direct off the pack
- charger is normally expensive
- do you need a power steering pump or a vacuum pump for the brakes?
- fuses and fuse holders are expensive
- you did not mention instrumentation for the pack, voltage and current, maybe amp-hours, perhaps temperature?
I actually had forgotten about those things, other than the dc-dc converter. That's kind of embarrassing. As for indication: I was going to hijack the tacho to indicate current draw, and use one of these to drive the old petrol gauge. Failing that: Full instrument replacement with Tesla style LCD screens... I think I'm daydreaming again.

Originally Posted by Frank Lee View Post
All your posts from here are still here.
Woot! I won't look, I was probably saying stupid things. haha
Making do with a Honda Civic. Tesla Model 3 reserved. Still kinda want an SVX for fun, though.

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