1981 GTV/16 Briggs Opposed Twin Varidrive Garden Tractor
* edited - I have learned it is actually a 1981. Posting title still says 1980.
I need help finding the correct size for the drive belts (2 belts, the long engine to varidrive belt as well as the shorter varidrive to transaxle belt.) Recommendations for a source for the belts is also appreciated. I did spend some time trying to find this information but not with good results. I also have not been able to find a manual for this model or for anything very close. I am pretty sure it is a 1980. I'll include model/serial info in a pic.
The Varidrive system is rather unique, having a big lever on the right to control the actuation of a variable ratio pulley system. This is instead of having a hi/lo trans, so this 833 transaxle just has the 3 speeds and reverse and no hi/lo lever on the side. I have never driven one yet, but theoretically you get a smooth/variable transition from the hi/lo ranges.
The pulley arrangement is very unique. The Briggs Opposed Twin (love em a lot) is mounted with the cylinders to the sides and crank aligned inline with tractor travel, main pulley on the back. There is a set of double pulleys at an angle underneath to change the direction of the main drive belt by 90 degrees and this arrives at the Varidrive pulley. Then there is a much shorter belt from the Varidrive pulley back to the transaxle.
Would love to get accurate belt size info and/or manuals or any suggestions, comments or questions on this tractor. I have not done much restoration yet on this tractor. It is one my my projects in waiting as I have quite a few other current ones.
These are awesome heavy duty garden tractors and I love the 1980s, Trans Am looking front. I'm curious how the Varidrive will work once I get it restored nicely.
I yearn to own an FF24 some day so this is the closest tractor to that in my collection currently.
Edited by MaxTractor, May 02, 2018 - 12:05 PM.