What does synchromesh look like?

[stevedee3]

Hi all,

I've been searching the 'net for good descriptions (preferably with pictures) showing how manual transmission synchromesh works, but without much success...

Can anyone point me in the direction of a good description?

Thanks.

[SSS_Hoon]

here

http://www.singster.co.uk/mascot%20mar-apr%202003%20(4).html

and here

http://www.howstuffworks.com/transmission.htm

and here

http://en.wikipedia.org/wiki/Manual_transmission

and here

http://www.answers.com/topic/manual-transmission

just a few, now i didnt read them so not sure if they are any help or not.


SSS_Hoon

[stevedee3]

here
http://www.singster.co.uk/mascot%20mar-apr%202003%20(4).html (http://www.singster.co.uk/mascot%20mar-apr%202003%20%284%29.html)

This one looks good but I can't make out the diagram...



http://www.howstuffworks.com/transmission.htm

This one's excellent for explaining how the rest of the transmission works, but doesn't really cover synchromesh.


http://en.wikipedia.org/wiki/Manual_transmission

and here

http://www.answers.com/topic/manual-transmission

Again, this explanation gives a good overview but is a bit light on when it comes to synchromesh.


just a few, now i didnt read them so not sure if they are any help or not.
SSS_HoonThanks SSS_Hoon

[platypus]

as far as i knew synchro mesh was more to do with helical cut gears, instead of the straight cut gears of yesteryear....

of course this would help
http://images.google.com.au/images?hl=en&q=synchromesh&btnG=Google+Search&ie=UTF-8&oe=UTF-8&sa=N&tab=wi
and a small history lesson here
http://www.singster.co.uk/mascot%20mar-apr%202003%20(4).html

[SSS_Hoon]

yeah syncrho's are for helical cut gears not straight cut gears although you cans till get them with some straight cut boxes.


they basically align the gears up before they actually meet so they are meshed together instead of crunching.


SSS_Hoon

[jsantos]

Think of it as a smaller set of teeth that protrude further and help align the gear with the engine speed before the gear is fully engaged to help remove the need for things like double clutching on down shifts.

[low astra]

basicaly, is a brass cone that engages between the gears to speed up\down the next gear to be selected so the gears can mesh together,

as the gears are internaly and extearnly cut, they will always line up, its basicaly to match the speed of the input shaft to the output shaft so they meet without a clunk when the new gear is selected


http://i12.tinypic.com/35b6ut5.jpg

its isnt acuatlly another gear as such more of a constand drive face as u can see by the 2nd and 3rd gear synchromesh labeled in the picture