Where to find front to rear drive ratios?

[Wild and Free]

I have read and searched for days on this forum and I find people talking about the drive ratios for specific tractors to find proper tire size.

I saw some talk about finding it in the archives here but I have yet to be able to find any charts listing all the tractors and the front to rear drive ratios.

I have found several threads talking about the B8200 being about the same as my
B2150 at 1.6911.

I found a post by Ecook about swapping to industrial tires on his B8200 from turf and he had the same sized turf tires as I do and he mounted them on the same rims and it worked great for him, that aside I thought there would be a chart here somewhere listing all the tractor models and the ratios but it is eluding me.

Anyone know where to find this info?

 

[B7100]

I had these threads saved that relate to tire sizes and ratios,there may be something of help in there?
dave
http://www.orangetractortalks.com/forums/showthread.php?t=4929
http://www.orangetractortalks.com/forums/showthread.php?t=853&highlight=b6000+tire
http://www.orangetractortalks.com/forums/showthread.php?t=4743
http://www.orangetractortalks.com/forums/showthread.php?t=3072

 

[gpreuss]

If you have a parts manual, they list the tooth count of every gear in the tractor. If you are mathematically inclined you can figure out the ratio, although it can be a bear. When you finally end up around 1.5 to one, you are probably right. You can always ask your dealer - they seem to have a wealth of obscure information not readily available to us mortals.
Once you have the gear ratio, you want the tire ratio to be a few percent smaller - you want the front tires to be pulling the rear ones just a little bit.