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Specifically, what is standard transmission sychronizer?

May 24th, 2009
  Note: If you click the picture it will enlarge. Fell free to copy it.. Using this exploded picture of a main shaft assembly from a 4 speed standard transmission, lets focus on the third and fourth speed synchronizer, the brass blocking ring and third gear. One item called the fork is missing.
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How does a standard transmission select the proper gear?

May 24th, 2009
Selecting a Gear All that remains is to provide a way to shift gears internally. The gear shifter lever works a mechanism which moves a pair of selector forks, one fork locked into the slot cut into the slider, allowing the fork to push forward or backwards to select one of two possible gears. These mechanisms are [...]
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Sychromesh and constant mesh standard transmissions..

May 22nd, 2009
Synchromesh: Continuation from our Helical Gear post yesterday. Conyiniuing my converstion with Brian of GotTransmissions.com, I explained that Constant-mesh gearboxes are quieter and slicker, but you still have to match the spinning speeds before you could engage the chosen gear. The final improvement, and the one which removes the need for double-clutching, is synchromesh. Synchromesh is a [...]
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Standard transmission: Helical cut gears

May 21st, 2009
Straight gears-Helical gears: I was explaining to Brian, the owner of GotTransmissions.com what a straight-cut gear looks like: it’s the classic cog, as seen above It’s a simple gear, but the mating surface is cut perfectly straight which causes noise problems (as it wears the gears fit less precisely with each new tooth coming into [...]
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Constant Mesh and Sychronized Gears equal modern standard transmissions..

May 21st, 2009
In the days before GotTransmissons.com was even a thought, changing or shifting from gear to gear was a delicate and potentially damaging operation requiring considerable skill. Straight-cut gears had to be matched in speed, synchronized,  before being brought into mesh together. The result was an unfriendly grinding noise – clashing of the gears, as it [...]
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