LT230 ratio, Serial 21D?

Does anyone have an idea of the ratio on a LT230 with serial starting 21D?

It's not on Ashcroft's list, and can't find it anywhere.

Thanks!

are you sure its not 12d, but you can tell by removing sump or pto cover, the intermediate cluste has 3 gears inner most smaller one is low ,middle is driven from input and rear most high ,if high gear teeth are the same height as middle gear its 1.222,if teeth are half wat up middle gear its 1.410 or if high gear teeth are same hieght as the base of middle gear its 1.667

Thanks, useful info! That one has high gear teeth reaching middle of the intermediate, which would indicate 1.41 (what I thought to start with...).

I made calculations on another case that I have open, serial 28D meaning 1.22. Gear on gearbox output shaft is 26 teeth, both intermediate and high gears on center shaft are the same 44 teeth, and high gear on case output is 34 teeth.

Since intermediate and high are the same, we can discard them in the calculation. If I do 34/26, I get 1.307, meaning that you need 1.307 revolutions of the gearbox to get 1 rev out of the case... How did LR calculate their ratios?

Mystery solved... I had the wrong gear. The right one is 28 teeth, not 26, then the math works out.