Re: [EVDL] Clutch Actuator

[Bruce Lawton via EV]

One consideration with a clutch is that you can easily overspeed the electric 
motor when downshifting if you miss a gear or aren’t paying attention. Relying 
on the synchros protects you somewhat in that case.

Bruce

> On Feb 26, 2018, at 3:03 PM, ev-requ...@lists.evdl.org wrote:
> On February 25, 2018 10:33:48 AM EST, John Lussmyer via EV  > wrote:
>> On Sat Feb 24 18:46:38 PST 2018 ev@lists.evdl.org  
>> said:
>>> FYI - Down-shifting can be done a lot faster than up-shifting with
>> just
>>> synchros, if you "goose" the throttle to bring the motor up to speed
>>> with the transmission.
>> 
>> Easy with a gas engine.
>> Much harder with an Electric Motor and a Z2K controller.  It's REALLY
>> REALLY easy to wind the motor up to max RPM's almost instantly.
> 
> I only have a 400amp Curtis, so maybe that makes it easier on me. 
> IIRC, the zilla has over speed protection as an option though?
> 
> Jay

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[EVDL] (no subject)

[Bruce Lawton via EV]

OK, Cor's right. So let's let this thread end now. It has very little to do 
with EVs, other than being a potential contributor to the overall power supply.

Thanks!

Bruce
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Re: [EVDL] EV-Spotting in London

[Bruce Lawton via EV]

Yes, London England. Well, I thought the price alone would steer drivers toward 
EVs, even if eco concerns did not.

Today I saw more rooftop solar around Bristol than I've seen in all of VA, NJ, 
AZ and Bahamas combined. Maybe electricity is very pricey.

Bruce


Bruce
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[EVDL] EV-Spotting in London

[Bruce Lawton via EV]

I'm in London this week and surprised at the lack of EVs. I see more on my 
northern Virginia commute than I've seen all week here. Gas is £1.22/liter 
($6.14/gal), which of course is much more than home.

Why so few EVs here?

Bruce
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Re: [EVDL] Battery size for a 40 ton 18 wheel truck with a 200+ mile range

[Bruce Lawton via EV]

You might want to compare notes with Steve Clunn. He just converted a semi last 
year and probably has real world numbers you could consider.

Bruce


Message: 2
> Date: Tue, 3 Nov 2015 15:14:07 -0800
> From: Larry Gales via EV 
> To: Electric Vehicle Discussion List ,SEVA
>
> Subject: [EVDL] Battery size for a 40 ton 18 wheel truck with a 200+
>milerange
> Message-ID:
>
> Content-Type: text/plain; charset="utf-8"
> 
> I'm trying to determine the battery size for an 18 wheel (40 ton) truck
> with a 200+ mile range.  There is a 20 ton bus (see:
> http://www.byd.com/na/auto/40feet.html  )  with a range of >155 miles and a
> battery size of 324 kWh.  So, for 210 miles that would be about 463 kWh.
> 
> According to a graph (figure 7) in:
> 
> http://www.goodyeartrucktires.com/pdf/resources/service-manual/Retread_S9_V.pdf
> the MPG declines from 5 to about 4.2 when the weight goes from 20 tons to
> 40 tons, so I would estimate that the truck would need about a 550 kWh
> battery.
> 
> Does that sound reasonable, or am I missing something?
> 
> Thanks,
> 
> 
> -- 
> Larry Gales
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