Gear ratio calculation question

[steve m]

I have my gear box in bits again, due an oil leak, and just wanted to check, which ratios I have,
First gear, has 28/13 teeth, that gives me a ratio 2.15 from an online calculator
The problem is, theres no such ratio for my gearbox ?

Is it just a case of counting the teeth on both cogs for that gear, or am I missing something ?

steve

[graham b]

what box is it ?

[graham b]

ford type 2 ....
1st: 2.71 2nd: 1.90 3rd: 1.30 4th: 1.00 5th: 0.81

[steve m]

Ford type 2

Ive done a recount, and its actually 29/14 and ratio 2.07

But still there are no ratio's for my box

steve

[steve m]

Ford type 2 is a 4 speed, not 5,

[graham b]

as far as i know
the only 4 speeds are...
2000e
2.97
1.97
1.40
1.00
--------------------
rocket
2.54
1.66
1.25
1.00

[Tony C]

Steve,

This article has a table of ratios at the end; http://www.dominicbolton.freeuk.com/art ... rboxes.pdf

Not sure if it helps?

[Mel T]

Don't know if this helps:
http://www.super7thheaven.co.uk/wp-content/uploads/2014/09/gearing.xls
If you have MS Excel you can load the page direct, if not here's a copy of gearbox info.

gearbox.jpg (146.75 KiB) Viewed 1271 times

Cheers,
Mel

[steve m]

Thanks for the replies
Even from the links, there does not seem to be anything which matches my gears
so the plan is, to put it back together, and sort the ratio's out then

steve

[scotty]

Just out of interest steve what diff ratio do you have?(guessing you have a live axle?) I have 3.54 which seems to blunt things a bit but helps on the motorway with the 4speed.