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Old 05-25-2017, 01:45 PM   #191 (permalink)
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Turtle

I wound up ordering another "better" BMS, after looking up the specs for the one I had. While it is supposed to be for LiFePO4 cells and all, I did not like the voltage cutoff being 0.1v (per cell) higher than the better one.

So, seeing as it has the LEDs indicators on it, I feel more confident in placing the cells in place of the gas tank, and have ordered more/longer leads to allow the BMS to reside in the spare tire well, where I will probably also mount at least one of the chargers.

I was sold on the idea, until I looked at my photos of where I was planning on placing them under the hood. I'm on the fence again.

If I put them in place of the gas tank, I can't visually check the cells. This concerns me.

If I put them right up front, they're going to get smoked if I have even a small fender-bender. This concerns me. Probably more.

There's minimal difference to how the cells get laid out, so I can still continue with the wiring, even if I haven't completely made up my mind.

Progress? What's that?

I put the first pack back in and re-connected the wiring, so she works again:



I have plenty of little(reasonable, individually) tasks to do, besides the big task regarding the other battery pack. Vacuum pump and reservoir to go in. Rear wheel bearing to replace (since I "borrowed" the good hub/drum to get my other firefly back on the road). Chargers to go in, eventually. Synchromesh for the transmission. Not a lot, really.

I'll start plugging away on these.

To help motivate me, I got a good deal on Monday. I had offered the guy 1/3rd less(my normal money-saving tactic) than his asking price a month back, and left it at that. Assumed that was the end of it when I didn't hear back from him for a while. Got an email Sunday night, and I just happened to be traveling up-island Monday, so I picked them up on the way:



They're 14's, vs the stock steel 13s.

I like 5-spoke "star" wheels. They come across as "sporty" to me. Any more or less...doesn't.

They also happened to come with just the size tires I was hoping for (185/65), with about 50% left to the wear-bars, so I'm not out another couple hundred bucks finding tires and getting them mounted.

155s vs 185s:


Yes, the tread actually is 30mm wider. I expect they'll make the Firefly stick to the road a lot better around the corners.

They're 5lbs heavier each. And like the additional width causing additional rolling resistance, well...I'm willing to put up with the slight range loss for a nice set of wheels that makes the car more appealing to look at and drive.

And bonus! They're dual bolt pattern, 4x114.3 & 4x100, so they'll fit most small cars. And I like small cars, so they can follow me if I get tired of the Firefly. (They'll fit my Miata, and even have the OE sized tires on them)

Hopefully they will succeed in encouraging me to get on with things.

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Old 05-26-2017, 10:38 AM   #192 (permalink)
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Topoff - '92 Geo Metro LSi
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90 day: 27.09 mpg (US)

'86 Fiero GT - '86 Pontiac Fiero GT

Purple Penny Pincher - '95 Pontiac Firefly Base
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Wheel bearing is in. Now the wheel actually turns!
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Old 05-29-2017, 02:29 PM   #193 (permalink)
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the question regarding collision damage: when as the last time you totalled a vehicle?

So yes the batteries in the front and rear edges are potentially catastrophic, and the STO. of accidents isn't <1. good fusing, and electrically insulating the cells from shorting metals should suffice.

you do drive around in a fueled vehicle that has enough potential energy to destroy a small city if the fuel is correctly mixed with oxygen.
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Old 05-29-2017, 02:44 PM   #194 (permalink)
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Quote:
Originally Posted by Piotrsko View Post
... you do drive around in a fueled vehicle that has enough potential energy to destroy a small city if the fuel is correctly mixed with oxygen.
Oh, the potential for disaster if the conditions are right for it...

Your car can give millions of people a sore butt if the metal is transformed into thumbtacks and placed on seats with the pin sticking upwards :P

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Last edited by RedDevil; 05-30-2017 at 02:53 AM..
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conversion, electric, ev conversion, firefly, geo metro

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