Torsion on Axle
Reduce and prevent torsion on axle
Thursday 11 March 2010, by
Torsion torque can break axles, especially if it’s high. In Truck Trial, torque on axles are very high, that is why it’s important to reduce and prevent the torsion on axle.
To know what is the torsion, please read this on Wikipedia
The important fact to know is that torsion angle is all the higher as the axle is long. Therefore, first rule is to have small axles as possible.
But if we don’t have the choice to put small axles ? You can build a special construction with axle joiners to reduce the length of axles.
With 2 studs length axles, the torsion angle is small. As the axle joiners are quite strong, they absorb a part of torsion angle. It seems that new axle joiners will be stronger than the older. So you should use them.
Also, you can reduce the torque on the axle to reduce the torsion angle. Per example, put a reduction reduce the torque on input and increase the torque output. That is why the portal axle is placed near the wheels.