Final drive??

[arejek]

Hi all sifu there..

I'm new here n new in mod world. Wanna know wat was final drive for and wat is difference between each final drive?? Is it makes gear become shorter by using smaller number, e.g. 4.490??

 

[Edward Chew]

"Makes gear shorter"??? haha.
4.490 is the result of the number of teeth on the Differential Ring Gear divided the number of teeth on the Differential Drive Pinion.
Which means when the Differential Drive Pinion turns 4.490 revolution, your Differential Ring Gear turns 1 revolution.
The higher the Number, the more torque it had converted to your wheels but turns slower.
What do you want to do with it? Just wanna know? good luck.
That's all i can answer. Correct me if im wrong. hehe

 

[simonchangwaimun]

speaking of that...
final drive = highest gear
but lets say those 5th gear ratio is 0.85...
then final drive 4.9...
how ar?5th gear is final gear woh...y 0.85 and 4.9 wan?

 

[m@ttz]

hm.. me also got confuse on this..

 

[ky_fei]

1 to 5th gear is on small gear, final is on big gear, small gear push big gear to move 1. =S

 

[Edward Chew]

speaking of that...
final drive = highest gear
but lets say those 5th gear ratio is 0.85...
then final drive 4.9...
how ar?5th gear is final gear woh...y 0.85 and 4.9 wan?

Not like that la... haha... 5th gear is 5th gear ma... final drive is final drive...
OR, 5th gear is the final "gear" of your gearbox la...
0.85 is the gear ratio of your 5th gear, means when your engine turns 0.85 revolution, your output from the gearbox is 1 revolution, which means the output is faster but less torque. This one is called Overdrive.
Let's say 1st gear, your gear ratio is 4.00. Means??? When engine turns 4 revolution, the output from the gearbox is only 1 revolution. Means slower and you gain more torque. This one called Underdrive..
Too long ah? confused??? haha....

 

[arejek]

Wah...very confused la now... How to know engine revolution??

 

[na_power]

so the higher is for torque and the lower is for speed?
final drive is final gear or what?

 

[Edward Chew]

Arejek, your car got dashboard right??? There got a engine rpm meter ma. RPM = Revolution per minute

Na_power. Simply saying is like that la. What is final gear meant for you? The last gear of the whole drive train? If so, it is either the Ring Gear of the differential or the pinion gear inside the differential. Hehe. So, it depends on how you think of it. hehe
And the final drive is referring the drive pinion and the ring gear la.

 

[na_power]

the last gear, gear 5 or 6=final gear=final drive= the smaller gear ratio is for top speed?

sorry kinda so blur hehehehe

 

[simonchangwaimun]

yala..but since u said 5th gear or 6th gear is final gear,then y all car spec hv 5th or 6th as 0.85 but also written FINAL GEAR 4.9 [or smtg like that la]

 

[ky_fei]

hahaha every1 is confused XD , juz say like that ,


A = 1 to 5th Gear
B = Final Drive

A spin B move, if Final Drive higher, eg. 4.6, 4.8 ur torque will be higher, u ll feel more pickup, but u sacrifice ur top end, means maybe u can drive maximum 150km/h with ur rpm pointing at 7krpm instead previously u can drive 150km/h on 4/5k rpm.

If final drive lower, eg 3.9, 4.0 ur pick up will be normal, but u can drive on top speed, like 150km/h on maybe 3,4k rpm.

I also blur blur , am i correct?

 

[na_power]

so final drive is different with the gear? gear 1 to 5 or 6 just using one final drive, so in the car trans there's only one final drive? and if sumone upgrade to higher final drive such as 4.9 to 5.01 its for pickup?

 

[simonchangwaimun]

so wat does 5th/6th got to do with final drive?
the ratio is so different,one below 1,one above 4[usually]
are these two ratio two different set of gearings?

 

[na_power]

damn. i feel headache already... sifoo help us to solve this... hehehe tq