Thursday, August 30, 2012

Would Tesla Motors ever start a proper electric car race team? Eventually!

Since Tesla Motors has such a reputation for high powered electric cars, it must seem that the company is an obvious choice to launch an electric car racing event of some kind.  Today, Jalopnik posted an interview with Elon Musk in which he was asked almost precisely that question:
How long before we start to see electric cars in major motorsports events? What is the main technological hurdle that would need to get worked out?
His answer didn't cover what was asked, but still managed to get the point across.  No racing for Tesla right now, but in the long run "yes".
We could do it right now and that would be super fun, but it is more important to make compelling electric cars that people can buy. One day, we will do racing...
I wrote up a fairly long analysis of the Elon Musk interview on TorqueNews, but let's take a closer look at this specific question.



First, there have been some Tesla Motors vehicles participating in the REFUEL race over the last couple years.  This year there was 12 or more Tesla Model S's and Roadsters in the event, and the top four finishers were driving Model S's.  The lap times were on the order of 1:51-1:55, but this years racers did not beat the track record set at the 2011 REFUEL race by Joe Nuxoll driving a Tesla Roadster.

While the Tesla Roadster is a very fast car, it's been observed that car can't maintain a high speed for very long.  One reason why the REFUEL races go for 3 laps at a time is because the Roadster's overheat because the motor does not have cooling.  While the Model S motor does have cooling, Tesla's goal with these cars is not to build the ultimate racing machine, but to build cars we would drive around town to go grocery shopping or typical sort of trips.

As for electric racing .. obviously there are motorsports events already happening with electric vehicles.  But they do not yet qualify as "major motorsports events".

The current events are limited by battery pack capacity.  The TTXGP and e-Power events go for about 22 miles while the AMA 600cc SuperBike go for 55 miles or more.  Any electric car race would face a similar limitation - for example Lord Drayson's car has enough capacity for about 15 minutes of racing.

On the other hand in gas vehicle racing they do stop in the pits to refuel mid-way through the race.  Hence, maybe we're thinking about the range limit incorrectly.  If the electric race vehicles were designed to, for example, support fast swap battery packs they could race for a lot longer.  In fact Zero Motorcycles held such a race in April 2009, the 24 Hours of Electricross, which was a full 24 hour endurance race with electric motorcycles.  In that race each team was allowed three battery packs, one on the bike and two on a charger.

Fast swap battery packs have been used in racing for perhaps 20 years.    For example the original Formula E race car, built by Ely Schless, carried a battery pack of 12 Trojan 24C3 lead-acid batteries, divided into two units of 250 lbs apiece and could be swapped in 10 seconds track-side.

Fast swap would be the electric equivalent of refueling a gas tank.

Source: Jalopnik

KillaJoule/KillaCycle team does not quite set 200 miles/hr electric streamline motorcycle land speed record

A couple days ago Eva Hakansson, builder of the KillaJoule and the better half of the KillaCycle team, reported having made an over-200 miles/hr run at Bonneville but achieving an average speed well under 200.  As of Tuesday they were intent on making more runs on Wednesday and today, and setting a record over 200 miles/hr.  Unfortunately they were well on their way to doing so, only to find halfway through a run that the battery pack had a loose connection when the bike suddenly shut down.

Specifically: --- 214.050 MPH in the flying mile and 216.504 MPH in flying km, but no new record ---
 
Eva writes that the bike was accelerating great until it suddenly stopped at around 215 miles/hr.  The KillaJoule is using the KillaCycle's original 11P110S, total of 1210 A123Systems "M1" cells battery pack.  That pack is five years old, has set many world records, etc, and five years of being hauled all over the world has taken its toll.  

She also wrote: This year's best offical record will be 191.488 MPH in the flying mile and 191.886 MPH (308.744 km/h) in the flying kilometer (pending approval by AMA).
 
Again, the KillaJoule is in a different class from the Lightning or Chip Yates bikes.  This record for the KillaJoule is very impressive, but the Lightning and Yates records from last year still stand.

Wednesday, August 29, 2012

Electric skateboard beats Corvette in drag race

What could be more ridiculous than a "drag race" between a skateboard and a Corvette?  Well, when that skateboard is a supersized electric skateboard, and the drag race is limited to 75 feet in length, then the skateboard rider has a chance.  And, maybe, in such a case, it's not quite ridiculous.

Gnarboards -  has designed a line of electric skateboards.  The top end board has 3.4 kilowatts of power, 16.5 kiloWatts peak, and a 0-28 miles/hr time of 1.9 seconds.  It has four motors, one for each of the four wheels, a 300 amp controller, and a 37 volt 20 amp-hour LiPO battery pack.  That means the battery pack can pull 15C if I'm doing the math right.

Obviously these are not your grandfathers skateboards.


New electric motorcycle land speed record - 78.4 miles/hr - under 150kg class

A couple weeks ago I noted that Kevin Clemens was intending to set the land speed record in the under-150-kilogram class.  Fast forward to this week, the BUB Motorcycle Speed Trials are underway, and he has set a record breaking the record he set last year.

According to a news report, on Sunday his controller went POP and probably let out the magic smoke. Fortunately he had a spare controller, but it only supported a lower voltage and he had to rewire the battery pack for the lower voltage.  This will of course limit the speed he can hit.

Yesterday he achieved a 78.4 miles/hr speed that is yet to be certified by the FIM.

Source: http://www.twincities.com/localnews/ci_21426358/lake-elmo-motorcyclist-sets-electric-bike-speed-record

KillaCycle's KillaJoule has 213 miles/hr run at BUB Motorcycle Speed Trials - aiming for 200+ mile/hr record today

This week is the BUB Motorcycle Speed Trials, the AMA/FIM certified land speed racing event on the Bonneville Salt Flats.  This year the KillaJoule team has returned to the salt and is having great success, already setting a record and achieving a 213.190 miles/hr run.  The KillaJoule is a full streamliner electric motorcycle with a "sidecar" of sorts.  It was built by Eva Hakansson and Bill Dube of the KillaCycle racing team.  The week is not done yet, and they're looking to make a full pair of runs today at over 200 miles/hr.

This speed is in the neighborhood of the Lightning Motorcycle and Chip Yates records from 2011.  Lightning achieved a 215 miles/hr record, and Chip Yates set four records the fastest of which was just shy of 200 miles/hr.  The thing is that the KillaJoule and the Lightning/Yates bikes are in different race classes.  Where Lightning & Yates raced with regular motorcycles, the KillaJoule is a full streamliner.

This picture should help to understand the distinction.

On the Bonneville Salt flats with Bill Dube and Eva Haakansson and their electric streamliner. Eva's first run was a new record so we are in impound until the second run is made.

http://www.facebook.com/photo.php?fbid=4062131484840&set=a.3790023442309.148319.1628798252&type=1&theater

Sunday they reported a brief rain storm that created a lake on the salt

After a brief rain storm this place turns into a lake. Team Killajoule has gone a little higher with the gearing for tomorrow. The course should be smoother and faster tomorrow, after this afternoons showers.

http://www.facebook.com/photo.php?fbid=4063445197682&set=a.3790023442309.148319.1628798252&type=1&theater
Also on Sunday they had a shake-down run during which they hit 159 miles/hr on the first pass, which then broke their record from last year necessitating a second run.  On the return pass they hit a 175 miles/hr average and exit speed over 180 miles/hr.  For Monday they planned to fiddle with the gearing and shoot for speeds over 200 miles/hr.

--- AMA record for KillaJoule at 167.851 mph ---

Time slips from the runs on Sunday

http://www.facebook.com/photo.php?fbid=427862950583632&set=a.134928633210400.12094.134690893234174&type=1&theater 

For Monday the report was that the track was wet and slippery in the morning. Eva couldn't get the KillaJoule beyond 169 miles/hr. This beat their record from yesterday, earning them a shot at a second run, by which time the track dried up. The average over the return run was 213.190 miles/hr with exit speed close to 220 miles/hr.

--- 213.190 MPH run! ---
Track was smooth but really slippery this morning and I couldn't get KillaJoule up to more than 169 mph. This was still a new record, so we got a return run. At that point, the track had dried up and traction was great. Since I did my qualifying run on the short track (starting at mile 3 with a 2 mile run-up), I had to make the return on the short track.

I run full throttle from start, and the bike just kept accelerating. The average over the flying mile was 213.190 mph. It was accelerating through the entire timed mile and the exit speed was probably close to 220 (my meter showed 201 mph entering and 211 exiting, but that is obviously not correct, it typically is correct so it must have been front wheel slip or the heat making the electronic speedo get out of calibration). 

We are making a new attempt tomorrow, this time starting from zero to get a 4.5 mile run-up. If the planets line up and luck is with us, we have a good chance for a record of over 200 mph.

// Eva & Bill with our great team Mike, Kent, Alicia, Tim, Debbie and Lena

Photo: Tim Eckert



 

Thursday, August 23, 2012

KleenSpeed taking to the track at Sonoma Raceway this weekend

KleenSpeed has built an electric race car which they use to test their drive train technology.  It also acts as a public face of the company where they can get some attention.  They just sent out an email saying they would be appearing this weekend at Sonoma Raceway during the IndyCar weekend.  They will be displaying all weekend in a booth behind the main grandstand, and then on Sunday at 10:30 AM they'll take an exhibition lap.  

Monday, August 13, 2012

Three electric cars finish in top 15 of 2012 Pikes Peak Hill Climb

The 2012 Pikes Peak Hill Climb was delayed following the (global warming) epic wildfire near Colorado Springs just before the original race date.  The rescheduled date was last weekend, and eight electric cars remained in the lineup for the race.  These teams included Toyota Motorsports Group, Mitsubishi, Elias Anderson (NovaKar), Michael Bream (EV West), Ikuo Hanawa (Ibaraki Japan Summit), and Nobuhiro Tajima (Monster Tajima).

For my full report see: http://www.torquenews.com/1075/electric-cars-finish-top-tier-rescheduled-pikes-peak-hill-climb

The Yokohama Tires entry, seen at the REFUEL 2012 race


The TMG EV P002 from a May test run