what does a shifting fork do?

Question

what does the shifting fork do?

Answer 1

The shifting fork is a very wide ( 2 1/2 - 3 in.) horseshoe looking object connected to a round shaft that protrudes from the transmission side cover. When you change gears the shifting fork inside your transmission moves the synchronizer rings and gears to different positions on the gear cluster rail as you shift gears.

To get a clear picture of how they work look up (top loader 4 speed transmissions). These transmissions are very clever as the shifting handle connects directly to the shifting fork. There's no crazy shifting linkage to worry about.

Answer 2

The shifting fork allows you to change or select gears. The shifting fork fit into a grove in a slider gear on the main shaft. Under the main shaft is a cluster gear, witch is driven by a gear on the imput shaft, front part of the main shaft. The cluster is a solid shaft that has several gears on it. The main shaft is in two parts, there is a drum that connects them, it also has a shifting fork. This drum only locks or unlock the main shaft. When in high gear the main shaft is locked and the slider gear is in neutral, between gears.

Answer 3

shifting forks are in the manual trans they are used to slide the collar from one gear to another

manual trans work like this the flywheel is hooked up to clutch and clutch transfer torque from flywheel to trans and into the input shaft

the input shaft has gears that are all splined to it that means that the gears are all spinning at the same speed as the input shaft and all these gears on the input shaft are meshed with the gears on the output shaft that means they are locked together so when one gear spins it spins the tohe rone through teeth on the gear there are the same number of gears on the output shaft as there r on the input shaft but on this shaft the gears r not splined so they spin at a different speed as the output shaft
then there are collars these are splined to the output shaft the shift forks move these collars to engage the gear
collars have teeth in the side of them and gears have spaces dug into them that fits the teeth in the side of the gear

so when u shift u engage these collars with the gears and now the output shaft will be spinning at the same speed of the gear it is engaged with and the output shaft's speed will depend on gear ratio
on the collars there are synchronisers that use friction to match the rpm so that the gears wont grind and get damaged

when u shift the rpms go up and down because say u have a gear ratio of 2:1 and u have 5000rpms are going 50mph then u shift into a gear ratio of 1:1 the rpms will go to 2500rpm to remain at the same speed and when u down shift into a lower gear the ratio becomes higher say 4:1 so it will go up to 10000rpms
NOTE:THESE ARE NOT REAL RATIOS
MOST RATIOS ARE DESIGNED SO THAT IT IS NOT MUCH OF A BIG GAP SO THE RPMS WONT DROP THAT MUCH FOR QUICKER SHIFT TIMES AND SO IT STAYS IN THE MOST POWERFUL SECTION OF THE TORQUE GRAPH

Answer 4

Shifting forks are in the manual trans. They "shift" the gears forward and back so you can select a range. It is a large "fork".

Answer 5

That is the mechanical linkage between the gear shifter and gears. The forks are actually shape like a wishbone . The 2 parts you normally grab to break it in half are actually the points that grab the gear. the other point of the wishbone is the point that is controlled by the gearshifter.