Thursday, 22 October 2009
Yes indeed there is! Think for a while......... .. do you hear anything?
oh well when the car goes forward, there is no sound except the engine sound.. of course when you reverse your car, there will still be engine sound.. you can't reverse you car without the engine started, can you? so when you enter reverse gear and press the accelerator, you hear some sound which will eventually get louder and louder... yeap that's the difference.. so it has something to do with the gears.. the gears that convert the engine power to forward movement are called helical gears (auf deutsch schrägverzahnte Zahnräder), while for the backward movement the gears are called .spur gears (auf deutsch geradeverzahnte Zahnräder)
i bet you are asking, WHY?
so this is the answer you looking for...
Specifically the way the teeth in the reverse gear are shaped. The forward gears in your transmission are helical shaped, meaning the individual teeth on the gear are curved rather than straight but reverse has straight cut teeth.
Why is straight noisier than helical? A helical gear's teeth are always in contact with the next gear thanks to their shape. Picture two straight gears moving very slowly. There's a split second that you'll see space between the teeth. The continuous tiny tapping of the gears remaking contact with each other creates the whine you hear. Since a helical gear has long, curved teeth, the point at which two gears meet is never out of contact, so no tiny taps, and no noise.source:http://autorepair.about.com/od/quicktips/qt/reverse_gear.htm
Tuesday, 20 October 2009
Face problems with no fear. Obstacles in life are inevitable. On our way to achieve something we often faces a lot problems, critics, accusations, even people who influence us or sabotage us.. be brave and roar!!!!
written by someone who could not practice what he preaches…
Monday, 19 October 2009
Saturday, 10 October 2009
Wednesday, 7 October 2009
My winter semester starts last week. The timetable is more hectic compared to the first semester. with so many subjects which are very new to me, to cope with.
PS: Class finished early so decided to walk around in Esslingen to snap some photos. it's fascinating to see leaves of different colours...
decided to upload my pictures in Flickr account as well..ll upload pictures from time to time. this is the link. click here.
Tuesday, 6 October 2009
here's the video. enjoy...