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I finally got my rebuilt T-20 with 12 tooth sprockets installed in my MaxIV and wanted to publish an initial report to let everyone know the early results. I was only able to drive my machine for a few minutes but here is what I found. I have now made the following modifications. Red Spring clutch, two spacers under the engine to raise the engine approximately 1/4 inch to tighten the drive belt and reduce play. This is to stop the belt squeak and to help the machine to be able to transfer power from my 27 horse engine with out drive belt problems. The sprockets on the T-20 have been reduced from a 16 tooth sprocket to a 12 tooth sprocket giving the max an over all 20% gear reduction.
How does it work? Well it pulls and accelerates like a freight train, there is an noticeable increase in low end power and the power comes on right now!! There is no noise from the transmission or drive train. The drive belt no longer squeaks and there is an immediate transfer of power when you hit the gas . I took it into some mud and water that was soft enough to stick a plow horse and saw the machine put down power and pull the way I have always wanted it to with seemingly an endless amount of power to pull the machine through power robbing deep mud that would have given the machine problems before. My top end seems as fast or faster than I want to go in most situations so it seems that I now have the best of both worlds and the kind of power I have been looking for muddy impossible situations. The vehicle now backs and turns better than ever with no noise or drive train problems and goes into reverse in an almost excellent matter. Over all I am very happy with the results but the jury is out until it has survived the Marengo swamp run and continues with reliability. I am testing a set of super lug Carlisle 26x12x12 tires for swimming and mudding and so far they seem to do the job but more will follow on that later after I have had a chance to really put them to the test! For anyone considing lower gearing use a 13 tooth sprocket not the 12 tooth so you can avoid the chain problems I have to deal with! Hope this helps anyone considering lower gears, much more to follow latter!!
How does it work? Well it pulls and accelerates like a freight train, there is an noticeable increase in low end power and the power comes on right now!! There is no noise from the transmission or drive train. The drive belt no longer squeaks and there is an immediate transfer of power when you hit the gas . I took it into some mud and water that was soft enough to stick a plow horse and saw the machine put down power and pull the way I have always wanted it to with seemingly an endless amount of power to pull the machine through power robbing deep mud that would have given the machine problems before. My top end seems as fast or faster than I want to go in most situations so it seems that I now have the best of both worlds and the kind of power I have been looking for muddy impossible situations. The vehicle now backs and turns better than ever with no noise or drive train problems and goes into reverse in an almost excellent matter. Over all I am very happy with the results but the jury is out until it has survived the Marengo swamp run and continues with reliability. I am testing a set of super lug Carlisle 26x12x12 tires for swimming and mudding and so far they seem to do the job but more will follow on that later after I have had a chance to really put them to the test! For anyone considing lower gearing use a 13 tooth sprocket not the 12 tooth so you can avoid the chain problems I have to deal with! Hope this helps anyone considering lower gears, much more to follow latter!!
This is what makes 6x6 World such a great forum , because we can all profit from others mistakes .
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