Calculating gear ratio
07-15-2014, 07:51 PM
#1
Calculating gear ratio
Not boating related, but plenty of gearheads on here so I figured why not.
I am working on a project that has a planetary reverse system. The sprocket on the output shaft is 9 teeth, going to the gear on the reverse shaft which is 25 teeth. The other sprocket on the reverse shaft is 18 teeth and turns the axle which has a 40 tooth sprocket.
So, it is going 9/25 to a 18/40.
My head is coming up with 6.12 or 6.15 to 1, depending on how I do the math. But that just doesn't seem right
I am working on a project that has a planetary reverse system. The sprocket on the output shaft is 9 teeth, going to the gear on the reverse shaft which is 25 teeth. The other sprocket on the reverse shaft is 18 teeth and turns the axle which has a 40 tooth sprocket.
So, it is going 9/25 to a 18/40.
My head is coming up with 6.12 or 6.15 to 1, depending on how I do the math. But that just doesn't seem right
Last edited by onesickpantera; 07-15-2014 at 07:53 PM.
07-15-2014, 08:44 PM
#2
Just look at summit racing gear 4.10 is 41 ring gear to 10 pinion gear or 41 Divide 10 = 4.10
I don't know if you figure planetary gear the same. I worked on front wheel drive garbage truck which had the regular ring and pinion diff and had planetary gear on the out part of the drive axle. Question does you project have a diff drive type system also?
I don't know if you figure planetary gear the same. I worked on front wheel drive garbage truck which had the regular ring and pinion diff and had planetary gear on the out part of the drive axle. Question does you project have a diff drive type system also?
No differential. Just 4 sprockets and two chains between the two shafts.
