Screw drive garden tractor

   / Screw drive garden tractor #22  
   / Screw drive garden tractor #23  
Hey Rednic79, will video 4 be coming anytime soon? I enjoyed the heck out of the first 3 so far!
 
   / Screw drive garden tractor #25  
Looks like Surplus Center sells the ZTR transaxles for $460-600 per pair (Surplus Center)

Aaron Z

Don't need a pair. Left and right drives are independant.

That sounds like a pair to me. A pair of shoes is one right and one left.

Here is a pair of ZTR transaxles.

Capture.JPG
 
   / Screw drive garden tractor #26  
For pontoons I wonder if you could just take some culvert (the stuff that looks like a screw) and weld some ends on it to make it float.
 
   / Screw drive garden tractor #27  
For pontoons I wonder if you could just take some culvert (the stuff that looks like a screw) and weld some ends on it to make it float.

I don't think culverts are actually "screws." I believe they are just convoluted, so they would just spin with no forward propulsion.
 
   / Screw drive garden tractor #28  
That sounds like a pair to me. A pair of shoes is one right and one left.

Here is a pair of ZTR transaxles.

<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=410360"/>

All the ones I had seen 'till now were one housing. The two separate housings would be better, as you could turn them to have the output shafts inline with the screws. Then just a few sprockets to couple the output to the screws.
 
   / Screw drive garden tractor #29  
All the ones I had seen 'till now were one housing. The two separate housings would be better, as you could turn them to have the output shafts inline with the screws. Then just a few sprockets to couple the output to the screws.
There are three levels of those transaxles (from lowest to highest quality):
1. One housing for both sides
2. Separate housings
3. Separate pumps and wheel motors

Aaron Z
 
   / Screw drive garden tractor #30  
I don't think culverts are actually "screws." I believe they are just convoluted, so they would just spin with no forward propulsion.

Not all culverts have a screw pattern, but I've seen some that do.

Example:
culvert.JPG
 

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