How many

[TEAM580 3]

How many different gear drive transaxles are there?

What one is the prefered one for pulling?

How much backside offset can be used to keep the wheels close to the frame?

Thanks.
Tom 

[gwest_ca-(File Mod) 10,539]

http://www.wheelhorseforum.com/search/?q=forward+speeds&type=downloads_file&sortby=relevancy&page=1

The strongest are the models using 8 one-piece pinion gears and 1-1/8" axles.

Garry

[953 nut 52,163]

Attached is a list of all years of , the right column has the transmissions listed. Hope a person who pulls can give a little more info.

 wheelhorseallyears (1).pdf

wheelhorseallyears (1).pdf

[TEAM580 3]

Does anyone make different gears (aftermarket) for these?

Thanks. Tom

[AMC RULES 36,961]

http://www.wheelhorseforum.com/forum/48-pullers/

[stevasaurus 22,273]

For what you are looking to do, there is basically 4 different kinds of Wheel Horse manual transmissions.
1)  3 speed...4 pinion differential...brake drum is on the 11/44 gear shaft.
      the 3 speed also comes with a bevel gear differential...you do not want one of these
2)  4 speed...same as the 3 speed except the brake drum is on the cluster gear shaft.
3)  6 speed...10 pinion limited slip differentials...brake drum is on the 11/44 gear shaft...you do not want one of these
4)  8 speed...4 pinion differential with 1" axles...brake drum is on the cluster gear shaft...you probably do not want one of these
     8 speed....8 pinion differential with 1 1/8" axles...this is probably the one you want and is considered the strongest by guys that pull. 
This should simplify what you want to look for. 

[953 nut 52,163]

http://www.wheelhorseforum.com/forum/48-pullers/

           Craig, I had never realized this category was so easy to find, makes for good reading.