Showing posts with label Electric Motor. Show all posts
Showing posts with label Electric Motor. Show all posts

Tuesday, February 23, 2010

Tantalizing Tango

I couldn't believe this vehicle was legit when I saw it at the 2010 North American International Auto Show in Detroit Michigan. The more I researched this vehicle - the more it grew on me. At first glance, the Tango looked too tall and seemed like it might tip over on a windy day.

Rollover Potential:
Not to worry, remember this is an electric vehicle (EV), with the 988 lbs of Hawker batteries under the floor. This allows for a low-center of gravity, with go-cart like-handling and NHTSA 5-star equivalent static rollover threshold rating.

Safety:
OK, but what about the thin shell? It looks like it's made of cardboard! Slow down, and you'll find out the Tango team's outlandish claims appear to be legit. Underneath the 100% carbon fiber/epoxy panels is a chrom-moly steel race car roll cage. According to Tango engineers this roll cage meets or exceed both SCCA and NHRA regulations. There are four times more side door protection bars than found in the largest SUVs.

Performance:
This part blows me away. Tango can rocket down a 1/4 mile track in 12 seconds at over 120 mph and blast you from 0-60 mph in a mere 4 seconds. That's mind-bending speed. How does it accomplish this extraordinary feat? Torque. Lots of it. The two electric motors in the Tango EV have more torque than a Dodge Viper V10 engine. Racing slicks and proper gearing help too.

Charging:
The Tango can charge to 80% of its capacity in just 10 minutes from a 200 amp charging station. Impressive. A full charge takes about 3 hours from a standard dryer style outlet.

Interior:
Looks tiny. Not so say's Tango (well, maybe for Shaq). Comfort comes in many sizes - someone claimed it comfortable that cleared 6-foot 10-inches and weighed 325 lbs.

Storage:
A whopping 10 cubic feet of space. Just a little shy of a 2006 Wrangler (11.6 cubic feet).

Batteries:
High-quality lead acid batteries (19 of them) made by Hawker. Cost to replace - guestimate is around 6K.

The Spec's are impressive:
Width: 39" (5" narrower than a Honda Gold Wing)
Ground Clearance: 4" (won't be seeing this clear snow on any dirt roads near my house in the winter)
Batteries: 19 Hawker Genesis G70EP lead acid batteries (list for about $435 each - not sure about long-term life-expectancy of lead acid batteries - one site says "GENESIS product will deliver up to 400 cycles")
Motors: 2 Advanced 9" motors, one driving each wheel with over 1,000 ft-lb of combined torque at low rpms (wow!)
Tires: Toyo Proxes T1R: 195/45R14 front; 215/45R15 rear
Range: 40-60 miles max with lead-acid batteries
Cost per mile: About 1/10 the cost of gasoline car for the average commuter (about a penny a mile)
Top speed: 135 mph
Emissions: It would be zero if it weren't for the tire smoke

Kind of reminds me of a pink panther cartoon I was watching recently. Waiting to see Chief Inspector Clouseau coming out of the vehicle in his original way. Much like Clouseau character, I want to see the Tango prosper - even as it defies the odds on its way to success.

Friday, January 22, 2010

Electric / Hybrid Eye Candy

Love the deep burnt orange color on Canadian-made eVaro electric / hybrid made by Future Vehicle Technologies (formerly Fuel Vapor Technologies). This fully-functioning plug-in electric series hybrid produces no emissions for 90% of its time on the road. It has an unlimited range with FVT custom on-board high-voltage generator.

The University of Fraser Valley confirmed an amazing 275 mpg for city driving and an average 165 mpg for highway driving. But this is no slow-poke, eVaro has a top speed of 135 mph, and can go from 0 to 60 mph in a sizzling five seconds. Check out the eVaro testing tires on YouTube.

Thursday, February 26, 2009

The future of pneumatic hybrid technology

With four boys (and friends like Eric Diem at work), I know all about air powered rifles, Vulcan Nerf® guns and pneumatically-powered toys like Air Hogs®. To paraphrase a WardsAuto.com article, the Swiss are coming to Detroit in April at the SAE World Congress to "Pump us up" on air power.

Lino Guzzella, a professor of thermotronics in ETH Zurich's department of mechanical and process engineering, states that his tiny 1.0L inline 2-cylinder engine can match the output of a 3.0L V6 engine. Wow! This might be the justification I need to finally buy that air compressor for the garage.

Search Google for "potato gun" and you'll find hundreds of designs for innovative compressed-air powered spud launchers. One of the key ingredients of any successful pneumatic system is the valve. The same applies here as the valve and control system will be the most expensive part of the pneumatic hybrid engine. Many a spud launcher uses a valve from a sprinkler system. Not the Swiss team, they're using an electronically-controlled hydraulic valve from Robert Bosch GmbH / Bosch Rexroth. Haven't seen one of those yet on a spud gun.

Electric motors and batteries will always be better than compressed air in regard to energy storage, but there may be hope for a pneumatic hybrid engine in China or India. Overall cost will be a big factor. I think I'll just put up with my foot pump for a little while longer.