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Today's Topics:
1. Re: 8.083 @163 MPH, Back-to-back! (Loni)
2. Re: power meter (John G. Lussmyer)
3. Re: Boston AltWheels? (Bob Rice)
4. Chinese motors update (Dan Frederiksen)
5. Re: LED Taillights - a money saver in gas cars? -
>rangeextenderin EV's? - an analysis PC Power Supply (Evan Tuer)
----------------------------------------------------------------------
Message: 1
Date: Sun, 30 Sep 2007 10:30:43 -0700
From: "Loni" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] 8.083 @163 MPH, Back-to-back!
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
SWEEEEEEET!
----- Original Message -----
From: "Bill Dube" <[EMAIL PROTECTED]>
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Sent: Sunday, September 30, 2007 9:52 AM
Subject: [EVDL] 8.083 @163 MPH, Back-to-back!
> We are getting so close to the 7's, we can taste it. :-)
>
> We all pitched in and managed to put the KillaCycle back together and
> to build a newer, slightly larger, A123 Systems Nano-phosphate
> battery pack in time for this race. Steve got the data logger up and
> running for this race too. Whew! It was an intense few weeks.
>
> Derek worked like the devil welding cells and soldering BMS modules.
> The new pack is 110 in series by 11 in parallel to make a total of
> 1210 cells. We switched over to copper "bussbar" strips instead of
> the standard nickel tabs. They are a bit more tricky to weld to the
> cells, but they are lighter and conduct much better.
>
> The addition of 220 cells put 34 more pounds on the bike. This
> shifted our CG forward and down slightly. Because of that, we had to
> find a new combination of launch current and throttle ramp rate to
> make the bike transfer weight correctly on the launch. We kept
> hopping or spinning the tire. In the end, we had Scotty run the bike
> "seat-of-the-pants" on the manual throttle instead of using the
> button to run the launch sequence.
>
> With Scotty running the throttle, we managed to get the bike to hook
> up decently (1.21 sec 60 ft) and we ran a 8.083 @159 MPH. We were
> right at the end of our available track time, so we simply ran the
> bike past the pits and directly to the starting line without
> recharging or even cooling the controller. With a slightly warm
> controller, the sixty foot time stretched out a touch to 1.22 seconds
> and we didn't pull as hard on the front half, but the warmer
> batteries made up for it in the back half to give us 8.083 seconds @ 163
> MPH.
>
> It was pretty nifty to demonstrate, on national TV, that the A123
> Systems batteries can put out full power for multiple runs without
> recharging. We really wowed these guys with these back-to-back
> record-breaking runs.
>
> Rich Rudman (bless his little heart) lent us a monster PFC-50 charger
> for this race. We were grinning like the Cheshire cat when we were
> able to recharge the bike, on camera, in 3 minutes, 36 seconds!
> Again, we floored the TV crew when we were able to recharge in LESS
> time than we predicted using LESS electricity than we predicted. We
> LOVE this PFC-50 charger!
>
> I suspect that the larger pack and the copper interconnects are
> making our internal pack losses significantly lower. These lower
> losses result in higher efficiency and naturally fewer Watt-hrs per
> run. We managed to fill the pack back up to 375 volts (ready to run
> again) with just 550 Watt-hrs, (~6 1/2 cents) of electricity.
>
> You will see all of this on Discovery Channel "Mean Green Machines"
> in January or February.
>
> Bill Dube'
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
------------------------------
Message: 2
Date: Sun, 30 Sep 2007 10:45:14 -0700
From: "John G. Lussmyer" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] power meter
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Ted Sanders wrote:
> Try your electric company to see if they have some older meters they would be
> willing to sell.
>
Or go to Ebay and pick one up cheap.
I have 4 sitting on the shelf right now.
------------------------------
Message: 3
Date: Sun, 30 Sep 2007 13:50:09 -0400
From: "Bob Rice" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] Boston AltWheels?
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
----- Original Message -----
From: "keith vansickle" <[EMAIL PROTECTED]>
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Sent: Sunday, September 30, 2007 9:23 AM
Subject: Re: [EVDL] Boston AltWheels?
>I am going to the altcar expo in long beach ca in a
> couple of weeks and I sure hope it is better..I don't
> know if there is any connection between the two. This
> report downright depresses me...one home built
> (golfcar thing) and one electrathon...Boston must be
> the backwoods of electric vehicles
>
> kEVs
> Hi Keith an' EVerybody;
I'm afraid yur right that we sure AREN"T on the cutting edge of EV's on
the Least Coast. EVen if I had dragged the Jetta up there? I guess I woulda
been the ONLY EV Daily Driver type exampple.Feh! I consider the Jetta a
horrible example, not model, of EV. Trying to show, if I can build a
drivable EV, WHY can't people who are automotive engineers, or have a car
factory in their back yard?Conversions aren't the way to go. Oh! We ALL know
this, but not ALL of us are inclined, have the skill, PATIENCE ant time to
just haul off and build a car. We just don't have enough Jerry Dycus'es and
Lee Harts to do it as quickly as Fraud or General Murders. Just to build a
good, stout, working DOOR!? Think about this one.I feel this is one of Lee's
and maybe Jerry's biggest challange in getting a car up and running?Then,
maybe crash testing? After seeing the Chinese cars crash tested on Ya Tube?
Scary, the Chinese SUV just discindegrated on impact! Guyz laughed in the
backround! Gees! I sure hope we do better. Probably would be just as bad if
ya drive our conversions into a stone wall at 30 mph, too? Poor old Jetta
would probably collapse like a car hit by a train? You can view great Train,
truck/ Vs. Train clips on Ya Tube, too!You will like the pickup getting
"Tapped" by the freight lokie at speed. Try explaing THAT one to the
insurance co<g>!So ya drive your EV a hellova lot more carefully, don't you?
I don't care about half the batteries flying out the front, it's the ones in
the TRUNK, right behind that structural cross member, hoping it's stuck in
there well enough, to hold back 700 lbs? That's why I drop them down BELOW
the frame rails in a "well" type battery box. In a inpact situation they MAY
stay in there, I won't be wearing them?? So far so good? No loose plywood
battery boxes held down with a few quarter -twenty bolts? Right!?
Hoping YOUR Alt Wheels Thing does better? At least you have a lovely
selection of RUNNING EV's
to select from. Whatthehell ? You CA,OR WA, guyz are Light Years ahead of
us, anyhow.
Seeya
Bob
------------------------------
Message: 4
Date: Sun, 30 Sep 2007 20:05:48 +0200
From: Dan Frederiksen <[EMAIL PROTECTED]>
Subject: [EVDL] Chinese motors update
To: Electric Vehicle Discussion List <ev@lists.sjsu.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I've been talking to 'super motors' of china and I've gotten some data.
it seems they have similar motor sizes (maybe even identical)
6.7", 7.56" and 9.5"
their specs are a little different and might have less overall power
rating. the 9.5" is rated 11kW.
their current ratings are lower too with class F insulation but their
torque per amps rating seems higher.
all in all they look quite similar to 'western' series DC motors of the
ADC kind.
the somewhat interesting aspect is the price of 400, 430 and 460$
respectively for the 3.
still waiting on the shipping cost
even if they are slightly weaker, the 9.5" must be a decent deal. I'm
not personally a fan of lower power to weight ratio so it's a bit in the
wrong direction but still
it's hard to know how they compare to ADC without actually testing both
to failure point. otherwise we'll just have to chance it and compare notes
more as it happens
Dan
------------------------------
Message: 5
Date: Sun, 30 Sep 2007 19:34:52 +0100
From: "Evan Tuer" <[EMAIL PROTECTED]>
Subject: Re: [EVDL] LED Taillights - a money saver in gas cars? -
>rangeextenderin EV's? - an analysis PC Power Supply
To: "Electric Vehicle Discussion List" <ev@lists.sjsu.edu>
Message-ID:
<[EMAIL PROTECTED]>
Content-Type: text/plain; charset=UTF-8
On 9/30/07, Lee Hart <[EMAIL PROTECTED]> wrote:
> storm connors wrote:
> > I am using a laptop computer brick feeding a solar controller. It is on all
> > the time unless I open the pack splitting breaker. It is feeding a full
> > sized marine battery and I have had no problem.
>
> That's a clever trick! Many newer laptop power supplies output 15v or
> more, and a solar controller can knock this down and control it to
> become a proper battery charger.
Be careful - some of the low-cost solar regulators work by crowbarring
the PV panel (when not shorted it feeds the battery through a diode).
If you connect that kind to a power supply it won't do either part
much good!
Good idea though, better than using a dissipative regulator for the same job.
------------------------------
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End of EV Digest, Vol 2, Issue 73
*********************************
