A limited slip differential has mechanisms to compensate for low grip on wheels. There are several different types. I'll list the main ones here.
Viscous Coupling - A VC diff is like the torque converter in an auto transmission. It has two sets of vanes - one set each connected to the two axles. They work by using the friction of fluid. A VC is filled with oil - similar to transmission fluid. When one wheel spins, it drives the vanes attached to its axle, which churns the fluid. This heats the fluid and increases its resistance. This creates friction which then drives the other set of vanes. VC have several downsides - because the resistance of the fluid varies with its temperature, the operation of the VC can change. Like a torque converter, you can also overheat the fluid in a VC, and it will not work.
Mechanical - Mechanical LSD's use either gears or clutches inside the diff to prevent single wheelspin. A simple clutch LSD has a set of clutch plates attached to each axle, and matching clutch plates attached to the housing. A mechanism uses the turning power applied to the LSD to push the clutches locked. The advantage of a clutch LSD is that in this manner the diffs are active whenever there is acceleration or deceleration force applied to it - even in a straight line. The downside is the same as with most LSD's. An LSD needs to have at least some resistance against both wheels or it won't function. Lift one wheel in the air and the LSD does nothing. There are ways to overcome this, however.
Electronic - There are electronic differentials out there that use various means to control power output to each wheel. These are often called 'active' differentials. The active yaw control in an EVO Lancer is one example. It uses electronics to sense turns, and physically delivers more power to the outside wheel. It works well, because even if the front wheels understeer (with the AWD), the extra power on the outside wheel actually pushes the nose around the corner.
you can watch this video for more understanding(easy to understand)
2009-07-29
2009-07-28
Honda Civic Mugen Type RR
Anyone Gotten A Honda Civic Type RR? This baby is beautiful but just too expensive, if you are a collector, maybe you should get one, because I guess this 2006 Honda Civic will become a great history in years to come, one of most sold performance car in Singapore, the ROAD is just flooded with Honda Civic Type R (CTR) as if the car is selling at a 1.6 FD4.
Here are some picture which I found and share with you guys, do give me your comments about this car? Have you seen one on the road or you own one, drove one before, please share with us!!!
2008 Honda Civic Mugen Type RR Picture
Engine
2008 Honda Civic Mugen Type RR Picture - Engine Bay
Engine capacity 1,998 cc
Engine type 2.0-litre DOHC i-VTEC
Compression ratio unknown
Bore x Stroke unknown
Power 237 bhp
Torque 218 Nm
Performance
Acceleration
Top Speed
Fuel consumption
Misc technical data
Transmission 6-speed manual short shift
Drive type
Measurements
Dimensions (L x W x H) (4570 x 1790 x 1415)mm
Wheelbase 2,700mm
Min turning radius
Kerb weight 1,260kg
Fuel tank capacity 50L
Brakes
Brakes (Front) Ventilated disc
Brakes (Rear) Ventilated disc
Suspension
Suspension (Front)
Suspension (Rear)
2008 Honda Civic Mugen Type RR Picture - Official Release
Subaru opens STi museum in Tokyo to celebrate 20 years
Wow, I’ve heard of birthday parties and presents, but an entire museum?
Yup, that’s right. Subaru Tecnica International - most well known as “STi”, is celebrating their 20th birthday this year. And what better way to celebrate than creating an STi museum? Fuji Heavy Industries has created this museum, dubbed the “STi Gallery”, which is open every day from 9:30am to 7pm. (except for select holidays)
Visitors of the museum can stop by and view STi in all of it’s glory. The STi Gallery features 3 different zones, each containing different pieces of STi heritage.
- Car Exhibition Zone - This area of the museum features Subaru’s that have been used both past and present in different racing events. It also features past and present production model STi’s.
- STi Concept Zone - This area features a showcase of STi racing parts and other various concept ideas.
- STi History Zone - The 3rd and final area of the museum features a timeline of STi’s involvement in motorsports and various production cars.
The museum is currently celebrating the release of the new 2010 Subaru Legacy. To aid in this, they’ve put Colin McRae’s Legacy RS on display; a car in which he drove to win the WRC New Zealand Rally in 1993.
2009-06-15
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